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• why OAuth request_token using openid4java is missing in the google's response?

  - by user454322

  I have succeed using openID and OAuth separately, but I can't make them work together. Am I doing something incorrect: String userSuppliedString = "https://www.google.com/accounts/o8/id"; ConsumerManager manager = new ConsumerManager(); String returnToUrl = "http://example.com:8080/isr-calendar-test-1.0-SNAPSHOT/GAuthorize"; List<DiscoveryInformation> discoveries = manager.discover(userSuppliedString); DiscoveryInformation discovered = manager.associate(discoveries); AuthRequest authReq = manager.authenticate(discovered, returnToUrl); session.put("openID-discoveries", discovered); FetchRequest fetch = FetchRequest.createFetchRequest(); fetch.addAttribute("email","http://schema.openid.net/contact/email",true); fetch.addAttribute("oauth", "http://specs.openid.net/extensions/oauth/1.0",true); fetch.addAttribute("consumer","example.com" ,true); fetch.addAttribute("scope","http://www.google.com/calendar/feeds/" ,true); authReq.addExtension(fetch); destinationUrl = authReq.getDestinationUrl(true); then destinationUrl is https://www.google.com/accounts/o8/ud?openid.ns=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0&openid.claimed_id=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0%2Fidentifier_select&openid.identity=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0%2Fidentifier_select&openid.return_to=http%3A%2F%2Fexample.com%3A8080%2FgoogleTest%2Fauthorize&openid.realm=http%3A%2F%2Fexample.com%3A8080%2FgoogleTest%2Fauthorize&openid.assoc_handle=AMlYA9WVkS_oVNWtczp3zr3sS8lxR4DlnDS0fe-zMIhmepQsByLqvGnc8qeJwypiRQAuQvdw&openid.mode=checkid_setup&openid.ns.ext1=http%3A%2F%2Fopenid.net%2Fsrv%2Fax%2F1.0&openid.ext1.mode=fetch_request&openid.ext1.type.email=http%3A%2F%2Fschema.openid.net%2Fcontact%2Femail&openid.ext1.type.oauth=http%3A%2F%2Fspecs.openid.net%2Fextensions%2Foauth%2F1.0&openid.ext1.type.consumer=example.com&openid.ext1.type.scope=http%3A%2F%2Fwww.google.com%2Fcalendar%2Ffeeds%2F&openid.ext1.required=email%2Coauth%2Cconsumer%2Cscope" but in the response from google request_token is missing http://example.com:8080/googleTest/authorize?openid.ns=http%3A%2F%2Fspecs.openid.net%2Fauth%2F2.0&openid.mode=id_res&openid.op_endpoint=https%3A%2F%2Fwww.google.com%2Faccounts%2Fo8%2Fud&openid.response_nonce=2011-11-29T17%3A38%3A39ZEU2iBVXr_zQG5Q&openid.return_to=http%3A%2F%2Fexample.com%3A8080%2FgoogleTest%2Fauthorize&openid.assoc_handle=AMlYA9WVkS_oVNWtczp3zr3sS8lxR4DlnDS0fe-zMIhmepQsByLqvGnc8qeJwypiRQAuQvdw&openid.signed=op_endpoint%2Cclaimed_id%2Cidentity%2Creturn_to%2Cresponse_nonce%2Cassoc_handle%2Cns.ext1%2Cext1.mode%2Cext1.type.email%2Cext1.value.email&openid.sig=5jUnS1jT16hIDCAjv%2BwAL1jopo6YHgfZ3nUUgFpeXlw%3D&openid.identity=https%3A%2F%2Fwww.google.com%2Faccounts%2Fo8%2Fid%3Fid%3DAItOawk8YPjBcnQrqXW8tzK3aFVop63E7q-JrCE&openid.claimed_id=https%3A%2F%2Fwww.google.com%2Faccounts%2Fo8%2Fid%3Fid%3DAItOawk8YPjBcnQrqXW8tzK3aFVop63E7q-JrCE&openid.ns.ext1=http%3A%2F%2Fopenid.net%2Fsrv%2Fax%2F1.0&openid.ext1.mode=fetch_response&openid.ext1.type.email=http%3A%2F%2Fschema.openid.net%2Fcontact%2Femail&openid.ext1.value.email=boxiencosi%40gmail.com why?

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• surfaceview + glsurfaceview + framelayout

  - by pohtzeyun

  Hi, I'm new at this (java and opengl) so please bear with me if the answer to the question is simple. :) I'm trying to get a camera preview screen with the ability to display 3d objects simultaneously. Having gone through the samples at the api demos, I thought combining the code for the the examples at the api demo would suffice. But somehow its not working. The forces me to shut down upon startup and the error is mentioned as null pointer exception. Could someone share with me where did I go wrong and how to proceed from there. How I did the combination for the code is as shown below: myoverview.xml <?xml version="1.0" encoding="utf-8"?> <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="fill_parent"> <android.opengl.GLSurfaceView android:id="@+id/cubes" android:orientation="horizontal" android:layout_width="fill_parent" android:layout_height="fill_parent"/> <SurfaceView android:id="@+id/camera" android:layout_width="fill_parent" android:layout_height="fill_parent"/> </FrameLayout> myoverview.java import android.app.Activity; import android.os.Bundle; import android.view.SurfaceView; import android.view.Window; public class MyOverView extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Hide the window title. requestWindowFeature(Window.FEATURE_NO_TITLE); // camera view as the background SurfaceView cameraView = (SurfaceView) findViewById(R.id.camera); cameraView = new CameraView(this); // visual of both cubes GLSurfaceView cubesView = (GLSurfaceView) findViewById(R.id.cubes); cubesView = new GLSurfaceView(this); cubesView.setRenderer(new CubeRenderer(false)); // set view setContentView(R.layout.myoverview); } } GLSurfaceView.java import android.content.Context; class GLSurfaceView extends android.opengl.GLSurfaceView { public GLSurfaceView(Context context) { super(context); } } NOTE : I didnt list the rest of the files as they are just copies of the api demos. The cameraView refers to the camerapreview.java example and the CubeRenderer refers to the CubeRenderer.java and Cube.java example. Any help would be appreciated as I've been stuck at this for a couple of days :p Thanks Sorry, didnt realise that the coding was out of place due to formatting mistakes. :p

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• Is there an algorithm for converting quaternion rotations to Euler angle rotations?

  - by Will Baker

  Is there an existing algorithm for converting a quaternion representation of a rotation to an Euler angle representation? The rotation order for the Euler representation is known and can be any of the six permutations (i.e. xyz, xzy, yxz, yzx, zxy, zyx). I've seen algorithms for a fixed rotation order (usually the NASA heading, bank, roll convention) but not for arbitrary rotation order. Furthermore, because there are multiple Euler angle representations of a single orientation, this result is going to be ambiguous. This is acceptable (because the orientation is still valid, it just may not be the one the user is expecting to see), however it would be even better if there was an algorithm which took rotation limits (i.e. the number of degrees of freedom and the limits on each degree of freedom) into account and yielded the 'most sensible' Euler representation given those constraints. I have a feeling this problem (or something similar) may exist in the IK or rigid body dynamics domains. Solved: I just realised that it might not be clear that I solved this problem by following Ken Shoemake's algorithms from Graphics Gems. I did answer my own question at the time, but it occurs to me it may not be clear that I did so. See the answer, below, for more detail. Just to clarify - I know how to convert from a quaternion to the so-called 'Tait-Bryan' representation - what I was calling the 'NASA' convention. This is a rotation order (assuming the convention that the 'Z' axis is up) of zxy. I need an algorithm for all rotation orders. Possibly the solution, then, is to take the zxy order conversion and derive from it five other conversions for the other rotation orders. I guess I was hoping there was a more 'overarching' solution. In any case, I am surprised that I haven't been able to find existing solutions out there. In addition, and this perhaps should be a separate question altogether, any conversion (assuming a known rotation order, of course) is going to select one Euler representation, but there are in fact many. For example, given a rotation order of yxz, the two representations (0,0,180) and (180,180,0) are equivalent (and would yield the same quaternion). Is there a way to constrain the solution using limits on the degrees of freedom? Like you do in IK and rigid body dynamics? i.e. in the example above if there were only one degree of freedom about the Z axis then the second representation can be disregarded. I have tracked down one paper which could be an algorithm in this pdf but I must confess I find the logic and math a little hard to follow. Surely there are other solutions out there? Is arbitrary rotation order really so rare? Surely every major 3D package that allows skeletal animation together with quaternion interpolation (i.e. Maya, Max, Blender, etc) must have solved exactly this problem?

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• Creating a tiled map with blender

  - by JamesB

  I'm looking at creating map tiles based on a 3D model made in blender, The map is 16 x 16 in blender. I've got 4 different zoom levels and each tile is 100 x 100 pixels. The entire map at the most zoomed out level is 4 x 4 tiles constructing an image of 400 x 400. The most zoomed in level is 256 x 256 obviously constructing an image of 25600 x 25600 What I need is a script for blender that can create the tiles from the model. I've never written in python before so I've been trying to adapt a couple of the scripts which are already there. So far I've come up with a script, but it doesn't work very well. I'm having real difficulties getting the tiles to line up seamlessly. I'm not too concerned about changing the height of the camera as I can always create the same zoomed out tiles at 6400 x 6400 images and split the resulting images into the correct tiles. Here is what I've got so far... #!BPY """ Name: 'Export Map Tiles' Blender: '242' Group: 'Export' Tip: 'Export to Map' """ import Blender from Blender import Scene,sys from Blender.Scene import Render def init(): thumbsize = 200 CameraHeight = 4.4 YStart = -8 YMove = 4 XStart = -8 XMove = 4 ZoomLevel = 1 Path = "/Images/Map/" Blender.drawmap = [thumbsize,CameraHeight,YStart,YMove,XStart,XMove,ZoomLevel,Path] def show_prefs(): buttonthumbsize = Blender.Draw.Create(Blender.drawmap[0]); buttonCameraHeight = Blender.Draw.Create(Blender.drawmap[1]) buttonYStart = Blender.Draw.Create(Blender.drawmap[2]) buttonYMove = Blender.Draw.Create(Blender.drawmap[3]) buttonXStart = Blender.Draw.Create(Blender.drawmap[4]) buttonXMove = Blender.Draw.Create(Blender.drawmap[5]) buttonZoomLevel = Blender.Draw.Create(Blender.drawmap[6]) buttonPath = Blender.Draw.Create(Blender.drawmap[7]) block = [] block.append(("Image Size", buttonthumbsize, 0, 500)) block.append(("Camera Height", buttonCameraHeight, -0, 10)) block.append(("Y Start", buttonYStart, -10, 10)) block.append(("Y Move", buttonYMove, 0, 5)) block.append(("X Start", buttonXStart,-10, 10)) block.append(("X Move", buttonXMove, 0, 5)) block.append(("Zoom Level", buttonZoomLevel, 1, 10)) block.append(("Export Path", buttonPath,0,200,"The Path to save the tiles")) retval = Blender.Draw.PupBlock("Draw Map: Preferences" , block) if retval: Blender.drawmap[0] = buttonthumbsize.val Blender.drawmap[1] = buttonCameraHeight.val Blender.drawmap[2] = buttonYStart.val Blender.drawmap[3] = buttonYMove.val Blender.drawmap[4] = buttonXStart.val Blender.drawmap[5] = buttonXMove.val Blender.drawmap[6] = buttonZoomLevel.val Blender.drawmap[7] = buttonPath.val Export() def Export(): scn = Scene.GetCurrent() context = scn.getRenderingContext() def cutStr(str): #cut off path leaving name c = str.find("\\") while c != -1: c = c + 1 str = str[c:] c = str.find("\\") str = str[:-6] return str #variables from gui: thumbsize,CameraHeight,YStart,YMove,XStart,XMove,ZoomLevel,Path = Blender.drawmap XMove = XMove / ZoomLevel YMove = YMove / ZoomLevel Camera = Scene.GetCurrent().getCurrentCamera() Camera.LocZ = CameraHeight / ZoomLevel YStart = YStart + (YMove / 2) XStart = XStart + (XMove / 2) #Point it straight down Camera.RotX = 0 Camera.RotY = 0 Camera.RotZ = 0 TileCount = 4**ZoomLevel #Because the first thing we do is move the camera, start it off the map Camera.LocY = YStart - YMove for i in range(0,TileCount): Camera.LocY = Camera.LocY + YMove Camera.LocX = XStart - XMove for j in range(0,TileCount): Camera.LocX = Camera.LocX + XMove Render.EnableDispWin() context.extensions = True context.renderPath = Path #setting thumbsize context.imageSizeX(thumbsize) context.imageSizeY(thumbsize) #could be put into a gui. context.imageType = Render.PNG context.enableOversampling(0) #render context.render() #save image ZasString = '%s' %(int(ZoomLevel)) XasString = '%s' %(int(j+1)) YasString = '%s' %(int((3-i)+1)) context.saveRenderedImage("Z" + ZasString + "X" + XasString + "Y" + YasString) #close the windows Render.CloseRenderWindow() try: type(Blender.drawmap) except: #print 'initialize extern variables' init() show_prefs()

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• Sending large serialized objects over sockets is failing only when trying to grow the byte Array, bu

  - by FinancialRadDeveloper

  I have code where I am trying to grow the byte array while receiving the data over my socket. This is erroring out. public bool ReceiveObject2(ref Object objRec, ref string sErrMsg) { try { byte[] buffer = new byte[1024]; byte[] byArrAll = new byte[0]; bool bAllBytesRead = false; int iRecLoop = 0; // grow the byte array to match the size of the object, so we can put whatever we // like through the socket as long as the object serialises and is binary formatted while (!bAllBytesRead) { if (m_socClient.Receive(buffer) > 0) { byArrAll = Combine(byArrAll, buffer); iRecLoop++; } else { m_socClient.Close(); bAllBytesRead = true; } } MemoryStream ms = new MemoryStream(buffer); BinaryFormatter bf1 = new BinaryFormatter(); ms.Position = 0; Object obj = bf1.Deserialize(ms); objRec = obj; return true; } catch (System.Runtime.Serialization.SerializationException se) { objRec = null; sErrMsg += "SocketClient.ReceiveObject " + "Source " + se.Source + "Error : " + se.Message; return false; } catch (Exception e) { objRec = null; sErrMsg += "SocketClient.ReceiveObject " + "Source " + e.Source + "Error : " + e.Message; return false; } } private byte[] Combine(byte[] first, byte[] second) { byte[] ret = new byte[first.Length + second.Length]; Buffer.BlockCopy(first, 0, ret, 0, first.Length); Buffer.BlockCopy(second, 0, ret, first.Length, second.Length); return ret; } Error: mscorlibError : The input stream is not a valid binary format. The starting contents (in bytes) are: 68-61-73-43-68-61-6E-67-65-73-3D-22-69-6E-73-65-72 ... Yet when I just cheat and use a MASSIVE buffer size its fine. public bool ReceiveObject(ref Object objRec, ref string sErrMsg) { try { byte[] buffer = new byte[5000000]; m_socClient.Receive(buffer); MemoryStream ms = new MemoryStream(buffer); BinaryFormatter bf1 = new BinaryFormatter(); ms.Position = 0; Object obj = bf1.Deserialize(ms); objRec = obj; return true; } catch (Exception e) { objRec = null; sErrMsg += "SocketClient.ReceiveObject " + "Source " + e.Source + "Error : " + e.Message; return false; } } This is really killing me. I don't know why its not working. I have lifted the Combine from a suggestion on here too, so I am pretty sure this is not doing the wrong thing? I hope someone can point out where I am going wrong

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• Find out CRC or CHECKSUM of RS232 data

  - by Carlos Alloatti

  I need to communicate with a RS232 device, I have no specs or information available. I send a 16 byte command and get a 16 byte result back. The last byte looks like some kind of crc or checksum, I have tried using this http://miscel.dk/MiscEl/miscelCRCandChecksum.html with no luck. Anyone can reverse engineer the crc/checksum algorithm? here is some data captured with an RS-232 monitor program: 01 80 42 00 00 00 00 00 00 00 00 00 00 00 01 B3 01 80 42 00 00 00 00 00 00 00 00 00 00 00 02 51 01 80 42 00 00 00 00 00 00 00 00 00 00 00 03 0F 01 80 42 00 00 00 00 00 00 00 00 00 00 00 04 8C 01 80 42 00 00 00 00 00 00 00 00 00 00 00 05 D2 01 80 42 00 00 00 00 00 00 00 00 00 00 00 06 30 01 80 42 00 00 00 00 00 00 00 00 00 00 00 07 6E 01 80 42 00 00 00 00 00 00 00 00 00 00 00 08 2F 01 80 42 00 00 00 00 00 00 00 00 00 00 00 09 71 01 80 42 00 00 00 00 00 00 00 00 00 00 00 0A 93 01 80 42 00 00 00 00 00 00 00 00 00 00 00 0B CD 01 80 42 00 00 00 00 00 00 00 00 00 00 00 0C 4E 01 80 42 00 00 00 00 00 00 00 00 00 00 00 0D 10 01 80 42 00 00 00 00 00 00 00 00 00 00 00 0E F2 01 80 42 00 00 00 00 00 00 00 00 00 00 00 0F AC 01 80 42 00 00 00 00 00 00 00 00 00 00 00 10 70 01 80 42 00 00 00 00 00 00 00 00 00 00 00 11 2E 01 80 42 00 00 00 00 00 00 00 00 00 00 00 12 CC 01 80 42 00 00 00 00 00 00 00 00 00 00 00 13 92 01 80 42 00 00 00 00 00 00 00 00 00 00 00 14 11 01 80 42 00 00 00 00 00 00 00 00 00 00 00 15 4F 01 80 42 00 00 00 00 00 00 00 00 00 00 00 16 AD 01 80 42 00 00 00 00 00 00 00 00 00 00 00 17 F3 01 80 42 00 00 00 00 00 00 00 00 00 00 00 18 B2 01 80 42 00 00 00 00 00 00 00 00 00 00 00 19 EC 01 80 42 00 00 00 00 00 00 00 00 00 00 00 1A 0E 01 80 42 00 00 00 00 00 00 00 00 00 00 00 1B 50 01 80 42 00 00 00 00 00 00 00 00 00 00 00 1C D3 01 80 42 00 00 00 00 00 00 00 00 00 00 00 1D 8D 01 80 42 00 00 00 00 00 00 00 00 00 00 00 1E 6F 01 80 42 00 00 00 00 00 00 00 00 00 00 00 1F 31 01 80 42 00 00 00 00 00 00 00 00 00 00 00 20 CE 01 80 42 00 00 00 00 00 00 00 00 00 00 00 21 90 01 80 42 00 00 00 00 00 00 00 00 00 00 00 22 72 01 80 42 00 00 00 00 00 00 00 00 00 00 00 23 2C 01 80 42 00 00 00 00 00 00 00 00 00 00 00 24 AF 01 80 42 00 00 00 00 00 00 00 00 00 00 00 25 F1 01 80 42 00 00 00 00 00 00 00 00 00 00 00 26 13 01 80 42 00 00 00 00 00 00 00 00 00 00 00 27 4D 01 80 42 00 00 00 00 00 00 00 00 00 00 00 28 0C 01 80 42 00 00 00 00 00 00 00 00 00 00 00 29 52 01 80 42 00 00 00 00 00 00 00 00 00 00 00 2A B0 01 80 42 00 00 00 00 00 00 00 00 00 00 00 2B EE 01 80 42 00 00 00 00 00 00 00 00 00 00 00 2C 6D 01 80 42 00 00 00 00 00 00 00 00 00 00 00 2D 33 01 80 42 00 00 00 00 00 00 00 00 00 00 00 2E D1 01 80 42 00 00 00 00 00 00 00 00 00 00 00 2F 8F 01 80 42 00 00 00 00 00 00 00 00 00 00 00 30 53 01 80 42 00 00 00 00 00 00 00 00 00 00 00 31 0D 01 80 42 00 00 00 00 00 00 00 00 00 00 00 32 EF 01 80 42 00 00 00 00 00 00 00 00 00 00 00 33 B1 01 80 42 00 00 00 00 00 00 00 00 00 00 00 34 32 01 80 42 00 00 00 00 00 00 00 00 00 00 00 35 6C 01 80 42 00 00 00 00 00 00 00 00 00 00 00 36 8E 01 80 42 00 00 00 00 00 00 00 00 00 00 00 37 D0 01 80 42 00 00 00 00 00 00 00 00 00 00 00 38 91 01 80 42 00 00 00 00 00 00 00 00 00 00 00 39 CF 01 80 42 00 00 00 00 00 00 00 00 00 00 00 3A 2D 01 80 42 00 00 00 00 00 00 00 00 00 00 00 3B 73 01 80 42 00 00 00 00 00 00 00 00 00 00 00 3C F0 01 80 42 00 00 00 00 00 00 00 00 00 00 00 3D AE 01 80 42 00 00 00 00 00 00 00 00 00 00 00 3E 4C 01 80 42 00 00 00 00 00 00 00 00 00 00 00 3F 12 01 80 42 00 00 00 00 00 00 00 00 00 00 00 40 AB 01 80 42 00 00 00 00 00 00 00 00 00 00 00 41 F5 01 80 42 00 00 00 00 00 00 00 00 00 00 00 42 17 01 80 42 00 00 00 00 00 00 00 00 00 00 00 43 49 01 80 42 00 00 00 00 00 00 00 00 00 00 00 44 CA 01 80 42 00 00 00 00 00 00 00 00 00 00 00 45 94 01 80 42 00 00 00 00 00 00 00 00 00 00 00 46 76 01 80 42 00 00 00 00 00 00 00 00 00 00 00 47 28 01 80 42 00 00 00 00 00 00 00 00 00 00 00 48 69 01 80 42 00 00 00 00 00 00 00 00 00 00 00 49 37 01 80 42 00 00 00 00 00 00 00 00 00 00 00 4A D5 01 80 42 00 00 00 00 00 00 00 00 00 00 00 4B 8B 01 80 42 00 00 00 00 00 00 00 00 00 00 00 4C 08 01 80 42 00 00 00 00 00 00 00 00 00 00 00 4D 56 01 80 42 00 00 00 00 00 00 00 00 00 00 00 4E B4 01 80 42 00 00 00 00 00 00 00 00 00 00 00 4F EA 01 80 42 00 00 00 00 00 00 00 00 00 00 00 50 36 01 80 42 00 00 00 00 00 00 00 00 00 00 00 51 68 01 80 42 00 00 00 00 00 00 00 00 00 00 00 52 8A 01 80 42 00 00 00 00 00 00 00 00 00 00 00 53 D4 01 80 42 00 00 00 00 00 00 00 00 00 00 00 54 57 01 80 42 00 00 00 00 00 00 00 00 00 00 00 55 09 01 80 42 00 00 00 00 00 00 00 00 00 00 00 56 EB 01 80 42 00 00 00 00 00 00 00 00 00 00 00 57 B5 01 80 42 00 00 00 00 00 00 00 00 00 00 00 58 F4 01 80 42 00 00 00 00 00 00 00 00 00 00 00 59 AA 01 80 42 00 00 00 00 00 00 00 00 00 00 00 5A 48 01 80 42 00 00 00 00 00 00 00 00 00 00 00 5B 16 01 80 42 00 00 00 00 00 00 00 00 00 00 00 5C 95 01 80 42 00 00 00 00 00 00 00 00 00 00 00 5D CB 01 80 42 00 00 00 00 00 00 00 00 00 00 00 5E 29 01 80 42 00 00 00 00 00 00 00 00 00 00 00 5F 77 01 80 42 00 00 00 00 00 00 00 00 00 00 00 60 88 01 80 42 00 00 00 00 00 00 00 00 00 00 00 61 D6 01 80 42 00 00 00 00 00 00 00 00 00 00 00 62 34 01 80 42 00 00 00 00 00 00 00 00 00 00 00 63 6A 01 80 42 00 00 00 00 00 00 00 00 00 00 00 64 E9 01 80 42 00 00 00 00 00 00 00 00 00 00 00 65 B7 01 80 42 00 00 00 00 00 00 00 00 00 00 00 66 55 01 80 42 00 00 00 00 00 00 00 00 00 00 00 67 0B 01 80 42 00 00 00 00 00 00 00 00 00 00 00 68 4A 01 80 42 00 00 00 00 00 00 00 00 00 00 00 69 14 01 80 42 00 00 00 00 00 00 00 00 00 00 00 6A F6 01 80 42 00 00 00 00 00 00 00 00 00 00 00 6B A8 01 80 42 00 00 00 00 00 00 00 00 00 00 00 6C 2B 01 80 42 00 00 00 00 00 00 00 00 00 00 00 6D 75 01 80 42 00 00 00 00 00 00 00 00 00 00 00 6E 97 01 80 42 00 00 00 00 00 00 00 00 00 00 00 6F C9 01 80 42 00 00 00 00 00 00 00 00 00 00 00 70 15 01 80 42 00 00 00 00 00 00 00 00 00 00 00 71 4B 01 80 42 00 00 00 00 00 00 00 00 00 00 00 72 A9 01 80 42 00 00 00 00 00 00 00 00 00 00 00 73 F7 01 80 42 00 00 00 00 00 00 00 00 00 00 00 74 74 01 80 42 00 00 00 00 00 00 00 00 00 00 00 75 2A 01 80 42 00 00 00 00 00 00 00 00 00 00 00 76 C8 01 80 42 00 00 00 00 00 00 00 00 00 00 00 77 96 01 80 42 00 00 00 00 00 00 00 00 00 00 00 78 D7 01 80 42 00 00 00 00 00 00 00 00 00 00 00 79 89 01 80 42 00 00 00 00 00 00 00 00 00 00 00 7A 6B 01 80 42 00 00 00 00 00 00 00 00 00 00 00 7B 35 01 80 42 00 00 00 00 00 00 00 00 00 00 00 7C B6 01 80 42 00 00 00 00 00 00 00 00 00 00 00 7D E8 01 80 42 00 00 00 00 00 00 00 00 00 00 00 7E 0A 01 80 42 00 00 00 00 00 00 00 00 00 00 00 7F 54 01 80 42 00 00 00 00 00 00 00 00 00 00 00 80 61 01 80 42 00 00 00 00 00 00 00 00 00 00 00 81 3F 01 80 42 00 00 00 00 00 00 00 00 00 00 00 82 DD 01 80 42 00 00 00 00 00 00 00 00 00 00 00 83 83 01 80 42 00 00 00 00 00 00 00 00 00 00 00 84 00 01 80 42 00 00 00 00 00 00 00 00 00 00 00 85 5E 01 80 42 00 00 00 00 00 00 00 00 00 00 00 86 BC 01 80 42 00 00 00 00 00 00 00 00 00 00 00 87 E2 01 80 42 00 00 00 00 00 00 00 00 00 00 00 88 A3 01 80 42 00 00 00 00 00 00 00 00 00 00 00 89 FD 01 80 42 00 00 00 00 00 00 00 00 00 00 00 8A 1F 01 80 42 00 00 00 00 00 00 00 00 00 00 00 8B 41 01 80 42 00 00 00 00 00 00 00 00 00 00 00 8C C2 01 80 42 00 00 00 00 00 00 00 00 00 00 00 8D 9C 01 80 42 00 00 00 00 00 00 00 00 00 00 00 8E 7E 01 80 42 00 00 00 00 00 00 00 00 00 00 00 8F 20 01 80 42 00 00 00 00 00 00 00 00 00 00 00 90 FC 01 80 42 00 00 00 00 00 00 00 00 00 00 00 91 A2 01 80 42 00 00 00 00 00 00 00 00 00 00 00 92 40 01 80 42 00 00 00 00 00 00 00 00 00 00 00 93 1E 01 80 42 00 00 00 00 00 00 00 00 00 00 00 94 9D 01 80 42 00 00 00 00 00 00 00 00 00 00 00 95 C3 01 80 42 00 00 00 00 00 00 00 00 00 00 00 96 21 01 80 42 00 00 00 00 00 00 00 00 00 00 00 97 7F 01 80 42 00 00 00 00 00 00 00 00 00 00 00 98 3E 01 80 42 00 00 00 00 00 00 00 00 00 00 00 99 60 01 80 42 00 00 00 00 00 00 00 00 00 00 00 9A 82 01 80 42 00 00 00 00 00 00 00 00 00 00 00 9B DC 01 80 42 00 00 00 00 00 00 00 00 00 00 00 9C 5F 01 80 42 00 00 00 00 00 00 00 00 00 00 00 9D 01 01 80 42 00 00 00 00 00 00 00 00 00 00 00 9E E3 01 80 42 00 00 00 00 00 00 00 00 00 00 00 9F BD 01 80 42 00 00 00 00 00 00 00 00 00 00 00 A0 42 01 80 42 00 00 00 00 00 00 00 00 00 00 00 A1 1C 01 80 42 00 00 00 00 00 00 00 00 00 00 00 A2 FE 01 80 42 00 00 00 00 00 00 00 00 00 00 00 A3 A0 01 80 42 00 00 00 00 00 00 00 00 00 00 00 A4 23 01 80 42 00 00 00 00 00 00 00 00 00 00 00 A5 7D 01 80 42 00 00 00 00 00 00 00 00 00 00 00 A6 9F 01 80 42 00 00 00 00 00 00 00 00 00 00 00 A7 C1 01 80 42 00 00 00 00 00 00 00 00 00 00 00 A8 80 01 80 42 00 00 00 00 00 00 00 00 00 00 00 A9 DE 01 80 42 00 00 00 00 00 00 00 00 00 00 00 AA 3C 01 80 42 00 00 00 00 00 00 00 00 00 00 00 AB 62 01 80 42 00 00 00 00 00 00 00 00 00 00 00 AC E1 01 80 42 00 00 00 00 00 00 00 00 00 00 00 AD BF 01 80 42 00 00 00 00 00 00 00 00 00 00 00 AE 5D 01 80 42 00 00 00 00 00 00 00 00 00 00 00 AF 03 01 80 42 00 00 00 00 00 00 00 00 00 00 00 B0 DF 01 80 42 00 00 00 00 00 00 00 00 00 00 00 B1 81 01 80 42 00 00 00 00 00 00 00 00 00 00 00 B2 63 01 80 42 00 00 00 00 00 00 00 00 00 00 00 B3 3D 01 80 42 00 00 00 00 00 00 00 00 00 00 00 B4 BE 01 80 42 00 00 00 00 00 00 00 00 00 00 00 B5 E0 01 80 42 00 00 00 00 00 00 00 00 00 00 00 B6 02 01 80 42 00 00 00 00 00 00 00 00 00 00 00 B7 5C 01 80 42 00 00 00 00 00 00 00 00 00 00 00 B8 1D 01 80 42 00 00 00 00 00 00 00 00 00 00 00 B9 43 01 80 42 00 00 00 00 00 00 00 00 00 00 00 BA A1 01 80 42 00 00 00 00 00 00 00 00 00 00 00 BB FF 01 80 42 00 00 00 00 00 00 00 00 00 00 00 BC 7C 01 80 42 00 00 00 00 00 00 00 00 00 00 00 BD 22 01 80 42 00 00 00 00 00 00 00 00 00 00 00 BE C0 01 80 42 00 00 00 00 00 00 00 00 00 00 00 BF 9E 01 80 42 00 00 00 00 00 00 00 00 00 00 00 C0 27 01 80 42 00 00 00 00 00 00 00 00 00 00 00 C1 79 01 80 42 00 00 00 00 00 00 00 00 00 00 00 C2 9B 01 80 42 00 00 00 00 00 00 00 00 00 00 00 C3 C5 01 80 42 00 00 00 00 00 00 00 00 00 00 00 C4 46 01 80 42 00 00 00 00 00 00 00 00 00 00 00 C5 18 01 80 42 00 00 00 00 00 00 00 00 00 00 00 C6 FA 01 80 42 00 00 00 00 00 00 00 00 00 00 00 C7 A4 01 80 42 00 00 00 00 00 00 00 00 00 00 00 C8 E5 01 80 42 00 00 00 00 00 00 00 00 00 00 00 C9 BB 01 80 42 00 00 00 00 00 00 00 00 00 00 00 CA 59 01 80 42 00 00 00 00 00 00 00 00 00 00 00 CB 07 01 80 42 00 00 00 00 00 00 00 00 00 00 00 CC 84 01 80 42 00 00 00 00 00 00 00 00 00 00 00 CD DA 01 80 42 00 00 00 00 00 00 00 00 00 00 00 CE 38 01 80 42 00 00 00 00 00 00 00 00 00 00 00 CF 66 01 80 42 00 00 00 00 00 00 00 00 00 00 00 D0 BA 01 80 42 00 00 00 00 00 00 00 00 00 00 00 D1 E4 01 80 42 00 00 00 00 00 00 00 00 00 00 00 D2 06 01 80 42 00 00 00 00 00 00 00 00 00 00 00 D3 58 01 80 42 00 00 00 00 00 00 00 00 00 00 00 D4 DB 01 80 42 00 00 00 00 00 00 00 00 00 00 00 D5 85 01 80 42 00 00 00 00 00 00 00 00 00 00 00 D6 67 01 80 42 00 00 00 00 00 00 00 00 00 00 00 D7 39 01 80 42 00 00 00 00 00 00 00 00 00 00 00 D8 78 01 80 42 00 00 00 00 00 00 00 00 00 00 00 D9 26 01 80 42 00 00 00 00 00 00 00 00 00 00 00 DA C4 01 80 42 00 00 00 00 00 00 00 00 00 00 00 DB 9A 01 80 42 00 00 00 00 00 00 00 00 00 00 00 DC 19 01 80 42 00 00 00 00 00 00 00 00 00 00 00 DD 47 01 80 42 00 00 00 00 00 00 00 00 00 00 00 DE A5 01 80 42 00 00 00 00 00 00 00 00 00 00 00 DF FB 01 80 42 00 00 00 00 00 00 00 00 00 00 00 E0 04 01 80 42 00 00 00 00 00 00 00 00 00 00 00 E1 5A 01 80 42 00 00 00 00 00 00 00 00 00 00 00 E2 B8 01 80 42 00 00 00 00 00 00 00 00 00 00 00 E3 E6 01 80 42 00 00 00 00 00 00 00 00 00 00 00 E4 65 01 80 42 00 00 00 00 00 00 00 00 00 00 00 E5 3B 01 80 42 00 00 00 00 00 00 00 00 00 00 00 E6 D9 01 80 42 00 00 00 00 00 00 00 00 00 00 00 E7 87 01 80 42 00 00 00 00 00 00 00 00 00 00 00 E8 C6 01 80 42 00 00 00 00 00 00 00 00 00 00 00 E9 98 01 80 42 00 00 00 00 00 00 00 00 00 00 00 EA 7A 01 80 42 00 00 00 00 00 00 00 00 00 00 00 EB 24 01 80 42 00 00 00 00 00 00 00 00 00 00 00 EC A7 01 80 42 00 00 00 00 00 00 00 00 00 00 00 ED F9 01 80 42 00 00 00 00 00 00 00 00 00 00 00 EE 1B 01 80 42 00 00 00 00 00 00 00 00 00 00 00 EF 45 01 80 42 00 00 00 00 00 00 00 00 00 00 00 F0 99 01 80 42 00 00 00 00 00 00 00 00 00 00 00 F1 C7 01 80 42 00 00 00 00 00 00 00 00 00 00 00 F2 25 01 80 42 00 00 00 00 00 00 00 00 00 00 00 F3 7B 01 80 42 00 00 00 00 00 00 00 00 00 00 00 F4 F8 01 80 42 00 00 00 00 00 00 00 00 00 00 00 F5 A6 01 80 42 00 00 00 00 00 00 00 00 00 00 00 F6 44 01 80 42 00 00 00 00 00 00 00 00 00 00 00 F7 1A 01 80 42 00 00 00 00 00 00 00 00 00 00 00 F8 5B 01 80 42 00 00 00 00 00 00 00 00 00 00 00 F9 05 01 80 42 00 00 00 00 00 00 00 00 00 00 00 FA E7 01 80 42 00 00 00 00 00 00 00 00 00 00 00 FB B9 01 80 42 00 00 00 00 00 00 00 00 00 00 00 FC 3A 01 80 42 00 00 00 00 00 00 00 00 00 00 00 FD 64 01 80 42 00 00 00 00 00 00 00 00 00 00 00 FE 86 01 80 42 00 00 00 00 00 00 00 00 00 00 00 FF D8 The second to last byte seems to be a sequential number that starts over at 00 when it reaches FF. I have included the whole range from 00 to FF to make it easier to guess the crc/checksum method.

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• PHP: POST Request to ASP.NET website results in 500 server error when html tags included

  - by RyanJD

  My situation: I need to send text to an ASP.NET web service using POST. The entire page there is a form: <form name="aspnetForm" method="post" action="Discussion.aspx?classroom=lG39il1cotOAGJwiNvmQlIPfwmjikD%2fAHLhjjGInAZQ%3d&amp;Page=Posts&amp;ID=794239&amp;Sort=&amp;SortOrder=" id="aspnetForm"> So, I figured if I sent a POST request to this form with the correct inputs it would work. And, to an extent, it has. The form inputs are as follows: <input type="hidden" name="__EVENTTARGET" id="__EVENTTARGET" value="" /> <input type="hidden" name="__EVENTARGUMENT" id="__EVENTARGUMENT" value="" /> <input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDw..." /> <input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION" value="/wEWYQLrt..." /> And a bunch of other inputs. The code I have used is as follows: // grab form info $inputs = extract_form_inputs($discussion['body']); $inputs['__EVENTTARGET'] = 'ctl00$cphMain$ctl01$btnSubmit'; $inputs['ctl00$cphMain$ctl01$tbNickname'] = "Your Instructor"; $inputs['ctl00$cphMain$ctl01$reMessage'] = $message; // submit form $r = request_send($discussion['url'], $inputs); extract_form_inputs does exactly that. $discussion['body'] is the content of the page. $discussion['url'] is the URL of the page. request_send has two arguments: ($url, $post_array). It performs rawurlencode on each element of the array and joins them up as keypairs, in the same way as http_build_query. The request is url encoded properly, sent to the correct page, and works fine until I insert html tags. I have checked - the 'greater than' and 'less than' symbols ('<' and '') are url-encoded properly. However, the server responds with a 500 error. It accepts any other text. Has anyone else come across this sort of problem? Is there some setting on an ASP.NET server that denies html? I can't see this being the case - there is a rich text editor on the website that I am sending requests to. This text editor performs the same request as I am, only I am doing it remotely. The rich text editor sends html to the form - I have checked that, too, using javascript. Note: I do not have the power to modify the ASP.NET server.

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• How to add a chart created in code behind to the rendered html page?

  - by Ryan

  I'm trying to create a .net charting control completely in the code behind and insert that chart at a specific location on the web page. Here is my html page: <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <title></title> </head> <body> <form id="form1" runat="server"> <div id="chart"></div> </form> </body> </html> Here is the code behind: using System; using System.Drawing; using System.Web.UI.DataVisualization.Charting; public partial class _Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { //SET UP THE DATA TO PLOT double[] yVal = { 80, 20 }; string[] xName = { "Pass", "Fail" }; //CREATE THE CHART Chart Chart1 = new Chart(); //BIND THE DATA TO THE CHART Chart1.Series.Add(new Series()); Chart1.Series[0].Points.DataBindXY(xName, yVal); //SET THE CHART TYPE TO BE PIE Chart1.Series[0].ChartType = System.Web.UI.DataVisualization.Charting.SeriesChartType.Pie; Chart1.Series[0]["PieLabelStyle"] = "Outside"; Chart1.Series[0]["PieStartAngle"] = "-90"; //SET THE COLOR PALETTE FOR THE CHART TO BE A PRESET OF NONE //DEFINE OUR OWN COLOR PALETTE FOR THE CHART Chart1.Palette = System.Web.UI.DataVisualization.Charting.ChartColorPalette.None; Chart1.PaletteCustomColors = new Color[] { Color.Blue, Color.Red }; //SET THE IMAGE OUTPUT TYPE TO BE JPEG Chart1.ImageType = System.Web.UI.DataVisualization.Charting.ChartImageType.Jpeg; //ADD A PLACE HOLDER CHART AREA TO THE CHART //SET THE CHART AREA TO BE 3D Chart1.ChartAreas.Add(new ChartArea()); Chart1.ChartAreas[0].Area3DStyle.Enable3D = true; //ADD A PLACE HOLDER LEGEND TO THE CHART //DISABLE THE LEGEND Chart1.Legends.Add(new Legend()); Chart1.Legends[0].Enabled = false; } } I want to render the charting control inside the div with id="chart" Thanks for the help!

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• Choosing the right .NET architecture. WCF? WPF/Forms, ASP.NET (MVC)?

  - by Tommy Jakobsen

  I’m in the situation that I have to design and implement a rather big system from the bottom. I’m having some (a lot actually) questions about the architecture that I would like your comments and thoughts on. I don’t hope that I’ve written too much here, but I wanted to give you all an idea of what the system is. Quick info about the applications, read if you want: I can’t share much detail about the project, but basically it’s a system where we offer our customer a service to manage their users. We have a hotline where the users call and our hotline uses an (windows) application (intranet) to manage the user’s data, etc. The customer also has a web application where they can see reports, information about their business and users, and the ability to modify their data. Modifying data is not just user data like address and so, but also information about the products/services the user has, which can be complicated. The applications will be built on Microsoft .NET Framework 4, with a MS SQL Server 2008 database. There will be a few applications that have to access this database, such as: Intranet application (used by us and our hotline) Customer web application type 1 Customer web application type 2 Customer web application type n different applications) … Now my big problem is what .NET parts I should use for such a system. For the “backend” I’ve considered using Windows Communication Foundation: Would WCF be a good choice? The intranet application will be an application that has to edit lots of records in the database. It has to be easy to navigate using the keyboard (fast to work with). Has a feature such as “find customer, find that, lookup this, choose this and update that”. What would be the best choice to develop this application in? Would it be WPF or good old Windows Forms? I don’t need all of the fancy graphics features in WPF, like 3D, but the application has to look nice (maybe something like the new Visual Studio/Office tools). And the same question goes for the web pages. They have much the same work to do, but not as many features as the intranet application, and not the same amount of data (much less). That is my questions for now. I’m hoping to get a discussion going that will open my eyes to some of these technologies, helping me decide architecture to go with. I would like to say thanks in advance, and let you all know that any thoughts will be much appreciated.

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• Is there a path of least resistance that a newcomer to graphics-technology-adoption can take at this point in the .NET graphics world?

  - by Rao

  For the past 5 months or so, I've spent time learning C# using Andrew Troelsen's book and getting familiar with stuff in the .NET 4 stack... bits of ADO.NET, EF4 and a pinch of WCF to taste. I'm really interested in graphics development (not for games though), which is why I chose to go the .NET route when I decided choose from either Java or .NET to learn... since I heard about WPF and saw some sexy screenshots and all. I'm even almost done with the 4 WPF chapters in Troelsen's book. Now, all of a sudden I saw some post on a forum about how "WPF was dead" in the face of something called Silverlight. I searched more and saw all the confusion going on at present... even stuff like "Silverlight is dead too!" wrt HTML5. From what I gather, we are in a delicate period of time that will eventually decide which technology will stabilize, right? Even so, as someone new moving into UI & graphics development via .NET, I wish I could get some guidance from people more experienced people. Maybe I'm reading too much? Maybe I have missed some pieces of information? Maybe a path exists that minimizes tears of blood? In any case, here is a sample vomiting of my thoughts on which I'd appreciate some clarification or assurance or spanking: My present interest lies in desktop development. But on graduating from college, I wish to market myself as a .NET developer. The industry seems to be drooling for web stuff. Can Silverlight do both equally well? (I see on searches that SL works "out of browser"). I have two fair-sized hobby projects planned that will have hawt UIs with lots of drag n drop, sliding animations etc. These are intended to be desktop apps that will use reflection, database stuff using EF4, networking over LAN, reading-writing of files... does this affect which graphics technology can be used? At some laaaater point, if I become interested in doing a bit of 3D stuff in .NET, will that affect which technologies can be used? Or what if I look up to the heavens, stick out my middle finger, and do something crazy like go learn HTML5 even though my knowledge of it can be encapsulated in 2 sentences? Sorry I seem confused so much, I just want to know if there's a path of least resistance that a newcomer to graphics-technology-adoption can take at this point in the graphics world.

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• Parsing language for both binary and character files

  - by Thorsten S.

  The problem: You have some data and your program needs specified input. For example strings which are numbers. You are searching for a way to transform the original data in a format you need. And the problem is: The source can be anything. It can be XML, property lists, binary which contains the needed data deeply embedded in binary junk. And your output format may vary also: It can be number strings, float, doubles.... You don't want to program. You want routines which gives you commands capable to transform the data in a form you wish. Surely it contains regular expressions, but it is very good designed and it offers capabilities which are sometimes much more easier and more powerful. Something like a super-grep which you can access (!) as program routines, not only as tool. It allows: joining/grouping/merging of results inserting/deleting/finding/replacing write macros which allows to execute a command chain repeatedly meta-grouping (lists-tables-hypertables) Example (No, I am not looking for a solution to this, it is just an example): You want to read xml strings embedded in a binary file with variable length records. Your tool reads the record length and deletes the junk surrounding your text. Now it splits open the xml and extracts the strings. Being Indian number glyphs and containing decimal commas instead of decimal points, your tool transforms it into ASCII and replaces commas with points. Now the results must be stored into matrices of variable length....etc. etc. I am searching for a good language / language-design and if possible, an implementation. Which design do you like or even, if it does not fulfill the conditions, wouldn't you want to miss ? EDIT: The question is if a solution for the problem exists and if yes, which implementations are available. You DO NOT implement your own sorting algorithm if Quicksort, Mergesort and Heapsort is available. You DO NOT invent your own text parsing method if you have regular expressions. You DO NOT invent your own 3D language for graphics if OpenGL/Direct3D is available. There are existing solutions or at least papers describing the problem and giving suggestions. And there are people who may have worked and experienced such problems and who can give ideas and suggestions. The idea that this problem is totally new and I should work out and implement it myself without background knowledge seems for me, I must admit, totally off the mark.

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• What is a good platform for building a game framework targetting both web and native languages?

  - by fuzzyTew

  I would like to develop (or find, if one is already in development) a framework with support for accelerated graphics and sound built on a system flexible enough to compile to the following: native ppc/x86/x86_64/arm binaries or a language which compiles to them javascript actionscript bytecode or a language which compiles to it (actionscript 3, haxe) optionally java I imagine, for example, creating an API where I can open windows and make OpenGL-like calls and the framework maps this in a relatively efficient manner to either WebGL with a canvas object, 3d graphics in Flash, OpenGL ES 2 with EGL, or desktop OpenGL in an X11, Windows, or Cocoa window. I have so far looked into these avenues: Building the game library in haXe Pros: Targets exist for php, javascript, actionscript bytecode, c++ High level, object oriented language Cons: No support for finally{} blocks or destructors, making resource cleanup difficult C++ target does not allow room for producing highly optimized libraries -- the foreign function interface requires all primitive types be boxed in a wrapper object, as if writing bindings for a scripting language; these feel unideal for real-time graphics and audio, especially exporting low-level functions. Doesn't seem quite yet mature Using the C preprocessor to create a translator, writing programs entirely with macros Pros: CPP is widespread and simple to use Cons: This is an arduous task and probably the wrong tool for the job CPP implementations differ widely in support for features (e.g. xcode cpp has no variadic macros despite claiming C99 compliance) There is little-to-no room for optimization in this route Using llvm's support for multiple backends to target c/c++ to web languages Pros: Can code in c/c++ LLVM is a very mature highly optimizing compiler performing e.g. global inlining Targets exist for actionscript (alchemy) and javascript (emscripten) Cons: Actionscript target is closed source, unmaintained, and buggy. Javascript targets do not use features of HTML5 for appropriate optimization (e.g. linear memory with typed arrays) and are immature An LLVM target must convert from low-level bytecode, so high-level constructs are lost and bloated unreadable code is created from translating individual instructions, which may be more difficult for an unprepared JIT to optimize. "jump" instructions cause problems for languages with no "goto" statements. Using libclang to write a translator from C/C++ to web languages Pros: A beautiful parsing library providing easy access to the code structure Can code in C/C++ Has sponsored developer effort from Apple Cons: Incomplete; current feature set targets IDEs. Basic operators are unexposed and must be manually parsed from the returned AST element to be identified. Translating code prior to compilation may forgo optimizations assumed in c/c++ such as inlining. Creating new code generators for clang to translate into web languages Pros: Can code in C/C++ as libclang Cons: There is no API; code structure is unstable A much larger job than using libclang; the innards of clang are complex Building the game library in Common Lisp Pros: Flexible, ancient, well-developed language Extensive introspection should ease writing translators Translators exist for at least javascript Cons: Unfamiliar language No standardized library functions, widely varying implementations Which of these avenues should I pursue? Do you know of any others, or any systems that might be useful? Does a general project like this exist somewhere already? Thank you for any input.

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• Reading and writing C++ vector to a file

  - by JB

  For some graphics work I need to read in a large amount of data as quickly as possible and would ideally like to directly read and write the data structures to disk. Basically I have a load of 3d models in various file formats which take too long to load so I want to write them out in their "prepared" format as a cache that will load much faster on subsequent runs of the program. Is it safe to do it like this? My worries are around directly reading into the data of the vector? I've removed error checking, hard coded 4 as the size of the int and so on so that i can give a short working example, I know it's bad code, my question really is if it is safe in c++ to read a whole array of structures directly into a vector like this? I believe it to be so, but c++ has so many traps and undefined behavour when you start going low level and dealing directly with raw memory like this. I realise that number formats and sizes may change across platforms and compilers but this will only even be read and written by the same compiler program to cache data that may be needed on a later run of the same program. #include <fstream> #include <vector> using namespace std; struct Vertex { float x, y, z; }; typedef vector<Vertex> VertexList; int main() { // Create a list for testing VertexList list; Vertex v1 = {1.0f, 2.0f, 3.0f}; list.push_back(v1); Vertex v2 = {2.0f, 100.0f, 3.0f}; list.push_back(v2); Vertex v3 = {3.0f, 200.0f, 3.0f}; list.push_back(v3); Vertex v4 = {4.0f, 300.0f, 3.0f}; list.push_back(v4); // Write out a list to a disk file ofstream os ("data.dat", ios::binary); int size1 = list.size(); os.write((const char*)&size1, 4); os.write((const char*)&list[0], size1 * sizeof(Vertex)); os.close(); // Read it back in VertexList list2; ifstream is("data.dat", ios::binary); int size2; is.read((char*)&size2, 4); list2.resize(size2); // Is it safe to read a whole array of structures directly into the vector? is.read((char*)&list2[0], size2 * sizeof(Vertex)); }

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• Calculating rotation and translation matrices between two odometry positions for monocular linear triangulation

  - by user1298891

  Recently I've been trying to implement a system to identify and triangulate the 3D position of an object in a robotic system. The general outline of the process goes as follows: Identify the object using SURF matching, from a set of "training" images to the actual live feed from the camera Move/rotate the robot a certain amount Identify the object using SURF again in this new view Now I have: a set of corresponding 2D points (same object from the two different views), two odometry locations (position + orientation), and camera intrinsics (focal length, principal point, etc.) since it's been calibrated beforehand, so I should be able to create the 2 projection matrices and triangulate using a basic linear triangulation method as in Hartley & Zissermann's book Multiple View Geometry, pg. 312. Solve the AX = 0 equation for each of the corresponding 2D points, then take the average In practice, the triangulation only works when there's almost no change in rotation; if the robot even rotates a slight bit while moving (due to e.g. wheel slippage) then the estimate is way off. This also applies for simulation. Since I can only post two hyperlinks, here's a link to a page with images from the simulation (on the map, the red square is simulated robot position and orientation, and the yellow square is estimated position of the object using linear triangulation.) So you can see that the estimate is thrown way off even by a little rotation, as in Position 2 on that page (that was 15 degrees; if I rotate it any more then the estimate is completely off the map), even in a simulated environment where a perfect calibration matrix is known. In a real environment when I actually move around with the robot, it's worse. There aren't any problems with obtaining point correspondences, nor with actually solving the AX = 0 equation once I compute the A matrix, so I figure it probably has to do with how I'm setting up the two camera projection matrices, specifically how I'm calculating the translation and rotation matrices from the position/orientation info I have relative to the world frame. How I'm doing that right now is: Rotation matrix is composed by creating a 1x3 matrix [0, (change in orientation angle), 0] and then converting that to a 3x3 one using OpenCV's Rodrigues function Translation matrix is composed by rotating the two points (start angle) degrees and then subtracting the final position from the initial position, in order to get the robot's straight and lateral movement relative to its starting orientation Which results in the first projection matrix being K [I | 0] and the second being K [R | T], with R and T calculated as described above. Is there anything I'm doing really wrong here? Or could it possibly be some other problem? Any help would be greatly appreciated.

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• C strange array behaviour

  - by LukeN

  After learning that both strncmp is not what it seems to be and strlcpy not being available on my operating system (Linux), I figured I could try and write it myself. I found a quote from Ulrich Drepper, the libc maintainer, who posted an alternative to strlcpy using mempcpy. I don't have mempcpy either, but it's behaviour was easy to replicate. First of, this is the testcase I have #include <stdio.h> #include <string.h> #define BSIZE 10 void insp(const char* s, int n) { int i; for (i = 0; i < n; i++) printf("%c ", s[i]); printf("\n"); for (i = 0; i < n; i++) printf("%02X ", s[i]); printf("\n"); return; } int copy_string(char *dest, const char *src, int n) { int r = strlen(memcpy(dest, src, n-1)); dest[r] = 0; return r; } int main() { char b[BSIZE]; memset(b, 0, BSIZE); printf("Buffer size is %d", BSIZE); insp(b, BSIZE); printf("\nFirst copy:\n"); copy_string(b, "First", BSIZE); insp(b, BSIZE); printf("b = '%s'\n", b); printf("\nSecond copy:\n"); copy_string(b, "Second", BSIZE); insp(b, BSIZE); printf("b = '%s'\n", b); return 0; } And this is its result: Buffer size is 10 00 00 00 00 00 00 00 00 00 00 First copy: F i r s t b = 46 69 72 73 74 00 62 20 3D 00 b = 'First' Second copy: S e c o n d 53 65 63 6F 6E 64 00 00 01 00 b = 'Second' You can see in the internal representation (the lines insp() created) that there's some noise mixed in, like the printf() format string in the inspection after the first copy, and a foreign 0x01 in the second copy. The strings are copied intact and it correctly handles too long source strings (let's ignore the possible issue with passing 0 as length to copy_string for now, I'll fix that later). But why are there foreign array contents (from the format string) inside my destination? It's as if the destination was actually RESIZED to match the new length.

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• MATLAB plot moving data points in seperate subplots simutaneously

  - by Nate B.

  I wish to visualize the movement of a data point throughout space across a period of time within MATLAB. However, the way I want my figure to display is such that only a single instant is plotted at any given time. That was easy, I simply created a for loop to update my 3D plot display for every set of coordinates (x,y,z) in my data. However, I wish to display 4 different viewing angles of this plot at all times. I am well aware of how to setup subplots within MATLAB, that is not the issue. My issue is getting all 4 of these subplots to execute simultaneously so that all 4 subplots are always displaying the same point in time. I would appreciate if anyone could suggest how to handle this issue. As requested, my code for a figure with a single plot is shown below: datan = DATA; %data in form of x,y,z,a,b,c by column for row# of time points tib=zeros(size(datan,1),12); tib(:,1:3) = datan(:,1:3); tib_ref=tib(1,1:3); for i=1:size(datan,1) tib(i,1:3)=tib(i,1:3)-tib_ref; end angle_to_dircos close all figure('Name','Directions (Individual Cycles)','NumberTitle','off') for cc=1:2 hold off for bb=1:10:size(tib,1); scatter3(tib(bb,1),tib(bb,2),tib(bb,3),'green','filled'); %z and y axes are flipped in polhemus system hold on p0 = [tib(bb,1),tib(bb,2),tib(bb,3)]; p1 = [tib(bb,1)+10*tib(bb,4),tib(bb,2)+10*tib(bb,5),tib(bb,3)+10*tib(bb,6)]; p2 = [tib(bb,1)+10*tib(bb,7),tib(bb,2)+10*tib(bb,8),tib(bb,3)+10*tib(bb,9)]; p3 = [-(tib(bb,1)+100*tib(bb,10)),-(tib(bb,2)+100*tib(bb,11)),-(tib(bb,3)+100*tib(bb,12))]; vectarrow(p0,p1,1,0,0) hold on vectarrow(p0,p2,0,1,0) hold on vectarrow(p0,p3,0,0,1) hold on az = 90; el = 0; view(az, el); xlim([-50,50]); ylim([-50,50]); zlim([-50,50]); xlabel('distance from center in X'); ylabel('distance from center in Y'); zlabel('distance from center in Z'); title('XYZ Scatter Plots of Tracker Position'); hold on plot3(0,0,0,'sk','markerfacecolor',[0,0,0]); p0 = [0,0,0]; p1 = [10,0,0]; p2 = [0,10,0]; p3 = [0,0,100]; vectarrow(p0,p1,1,0,0) hold on vectarrow(p0,p2,0,1,0) hold on vectarrow(p0,p3,1,0,1) drawnow; end end

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• Opening Macro definitions: tdfx_span.c: lvalue required as left operand of assignment

  - by anttir

  Hi, I'm trying to compile X11R6-7.0 under Ubuntu maverick and got some weird compilation errors I'm unable to resolve myself. I needed X11R6-7.0 as ati catalyst drivers don't support newer xorg and oss drivers don't support 3d acceleration of my hardware. Anyone know what this error message means? I know some C but I got a bit confused. Does it mean GET_FB_DATA macro returned NULL or some method/property not set? Any further insight how to "debug" preprocessor definitions at this point would be great. I don't think I can print anything useful with #error. The error I get: tdfx_span.c: In function ‘tdfxDDWriteDepthPixels’: tdfx_span.c:976: error: lvalue required as left operand of assignment tdfx_span.c:1008: error: lvalue required as left operand of assignment tdfx_span.c: In function ‘write_stencil_pixels’: tdfx_span.c:1242: error: lvalue required as left operand of assignment the Code: 958- switch (depth_size) { 959- case 16: 960- GetBackBufferInfo(fxMesa, &backBufferInfo); 961- /* 962- * Note that the _LOCK macro adds a curly brace, 963- * and the UNLOCK macro removes it. 964- */ 965- WRITE_FB_SPAN_LOCK(fxMesa, info, 966- GR_BUFFER_AUXBUFFER, GR_LFBWRITEMODE_ANY); 967- { 968- LFBParameters ReadParams; 969- GetFbParams(fxMesa, &info, &backBufferInfo, 970- &ReadParams, sizeof(GLushort)); 971- for (i = 0; i < n; i++) { 972- if (mask[i] && visible_pixel(fxMesa, x[i], y[i])) { 973- xpos = x[i] + fxMesa->x_offset; 974- ypos = bottom - y[i]; 975- d16 = depth[i]; 976: PUT_FB_DATA(&ReadParams, GLushort, xpos, ypos, d16); 977- } 978- } 979- } 980- WRITE_FB_SPAN_UNLOCK(fxMesa, GR_BUFFER_AUXBUFFER); 981- break; 982- case 24: And relative macros: #define GET_FB_DATA(ReadParamsp, type, x, y) \ (((x) < (ReadParamsp)->firstWrappedX) \ ? (((type *)((ReadParamsp)->lfbPtr)) \ [(y) * ((ReadParamsp)->LFBStrideInElts) \ + (x)]) \ : (((type *)((ReadParamsp)->lfbWrapPtr)) \ [((y)) * ((ReadParamsp)->LFBStrideInElts) \ + ((x) - (ReadParamsp)->firstWrappedX)])) #define GET_ORDINARY_FB_DATA(ReadParamsp, type, x, y) \ (((type *)((ReadParamsp)->lfbPtr)) \ [(y) * ((ReadParamsp)->LFBStrideInElts) \ + (x)]) #define GET_WRAPPED_FB_DATA(ReadParamsp, type, x, y) \ (((type *)((ReadParamsp)->lfbWrapPtr)) \ [((y)) * ((ReadParamsp)->LFBStrideInElts) \ + ((x) - (ReadParamsp)->firstWrappedX)]) #define PUT_FB_DATA(ReadParamsp, type, x, y, value) \ (GET_FB_DATA(ReadParamsp, type, x, y) = (type)(value)) #define PUT_ORDINARY_FB_DATA(ReadParamsp, type, x, y, value) \ (GET_ORDINARY_FB_DATA(ReadParamsp, type, x, y) = (type)(value)) #define PUT_WRAPPED_FB_DATA(ReadParamsp, type, x, y, value) \ (GET_WRAPPED_FB_DATA(ReadParamsp, type, x, y) = (type)(value)) The LFBParameters Struct 483-typedef struct 484-{ 485- void *lfbPtr; 486- void *lfbWrapPtr; 487- FxU32 LFBStrideInElts; 488- GLint firstWrappedX; 489-} 490:LFBParameters; Thanks for looking.

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• Android database closed exception

  - by Bombastic

  I'm working on a project where I'm downloading and saving data from web to sqlite database. A few minutes ago I receive a strange exception to our server from a user which is saying that the sqlite database is already closed..and I just checked the whole file where the exception happened and I'm not calling dbHelper.close();. Here is the function where the app crashes and LogCat message : public void insertCollectionCountries(JSONObject obj, Context context) { //Insert in collection_countries if(RPCCommunicator.isServiceRunning){ Log.w("","JsonCollection - insertCollectionCountries"); ContentValues valuesCountries = new ContentValues(); try { collectionId = Integer.parseInt(obj.getString("collection_id")); dbHelper.deleteSQL("collection_countries", "collection_id=?", new String[] {Integer.toString(collectionId)}); JSONArray arrayCountries = obj.getJSONArray("country_availability"); for (int i=0; i<arrayCountries.length(); i++) { valuesCountries.put("collection_id", collectionId); String countryCode = arrayCountries.getString(i); valuesCountries.put("country_code", countryCode); dbHelper.executeQuery("collection_countries", valuesCountries); } } catch (JSONException e){ e.printStackTrace(); } } } and the error is on that line : dbHelper.executeQuery("collection_countries", valuesCountries); here is the LogCat message : java.lang.IllegalStateException: database /data/data/com.stampii.stampii/databases/stampii_sys_tpl.sqlite (conn# 0) already closed at android.database.sqlite.SQLiteDatabase.verifyDbIsOpen(SQLiteDatabase.java:2123) at android.database.sqlite.SQLiteDatabase.setTransactionSuccessful(SQLiteDatabase.java:734) at com.stampii.stampii.comm.rpc.SystemDatabaseHelper.execQuery(SystemDatabaseHelper.java:298) at com.stampii.stampii.comm.rpc.SystemDatabaseHelper.executeQuery(SystemDatabaseHelper.java:291) at com.stampii.stampii.jsonAPI.JsonCollection.insertCollectionCounries(JsonCollection.java:548) at com.stampii.stampii.jsonAPI.JsonCollection.executeInsert(JsonCollection.java:181) at com.stampii.stampii.collections.MyService.downloadCollections(MyService.java:122) at com.stampii.stampii.collections.MyService$2.run(MyService.java:74) at java.lang.Thread.run(Thread.java:1020) and function in my dbHelperClass which I'm using to insert data : public boolean executeQuery(String tableName,ContentValues values){ return execQuery(tableName,values); } private boolean execQuery(String tableName,ContentValues values){ sqliteDb = instance.getWritableDatabase(); sqliteDb.beginTransaction(); sqliteDb.insert(tableName, null, values); sqliteDb.setTransactionSuccessful(); sqliteDb.endTransaction(); return true; } Any ideas which can close my sqlite database or what can cause that exception, because I've tested this code on a few emulators with different Android versions, different devices (HTC EVO 3D, Samsung Galaxy Nexus,HTC Desire, LG OPTIMUS PAD, Samsung Galaxy S2, Samsung Galaxy Note) and it's working fine. Thanks in advance!

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• Image animation problem in silverlight

  - by Jak

  Hi followed " http://www.switchonthecode.com/tutorials/silverlight-3-tutorial-planeprojection-and-perspective-3d#comment-4688 ".. the animation is working fine. I am new to silver light. when i use dynamic image from xml instead of static image as in tutorial,.. it is not working fine, please help me on this. i used list box.. for this animation effect do i need to change listbox to some other arrangement ? if your answer yes means, pls give me some sample code. Thanks in advance. Xaml code: <ListBox Name="listBox1"> <ListBox.ItemTemplate> <DataTemplate> <StackPanel> <Image Source="{Binding imgurl}" HorizontalAlignment="Left" Name="image1" Stretch="Fill" VerticalAlignment="Top" MouseLeftButtonUp="FlipImage" /> </StackPanel> </DataTemplate> </ListBox.ItemTemplate> </ListBox> My C# code: //getting image URL from xml XElement xmlads = XElement.Parse(e.Result); //i bind the url in to listBox listBox1.ItemsSource = from ads in xmlads.Descendants("ad") select new zestItem { imgurl = ads.Element("picture").Value }; public class zestItem { public string imgurl { get; set; } } private int _zIndex = 10; private void FlipImage(object sender, MouseButtonEventArgs e) { Image image = sender as Image; // Make sure the image is on top of all other images. image.SetValue(Canvas.ZIndexProperty, _zIndex++); // Create the storyboard. Storyboard flip = new Storyboard(); // Create animation and set the duration to 1 second. DoubleAnimation animation = new DoubleAnimation() { Duration = new TimeSpan(0, 0, 1) }; // Add the animation to the storyboard. flip.Children.Add(animation); // Create a projection for the image if it doesn't have one. if (image.Projection == null) { // Set the center of rotation to -0.01, which will put a little space // between the images when they're flipped. image.Projection = new PlaneProjection() { CenterOfRotationX = -0.01 }; } PlaneProjection projection = image.Projection as PlaneProjection; // Set the from and to properties based on the current flip direction of // the image. if (projection.RotationY == 0) { animation.To = 180; } else { animation.From = 180; animation.To = 0; } // Tell the animation to animation the image's PlaneProjection object. Storyboard.SetTarget(animation, projection); // Tell the animation to animation the RotationYProperty. Storyboard.SetTargetProperty(animation, new PropertyPath(PlaneProjection.RotationYProperty)); flip.Begin(); }

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• Generating Unordered List with PHP + CodeIgniter from a MySQL Database

  - by Tim

  Hello Everyone, I am trying to build a dynamically generated unordered list in the following format using PHP. I am using CodeIgniter but it can just be normal php. This is the end output I need to achieve. <ul id="categories" class="menu"> <li rel="1"> Arts &amp; Humanities <ul> <li rel="2"> Photography <ul> <li rel="3"> 3D </li> <li rel="4"> Digital </li> </ul> </li> <li rel="5"> History </li> <li rel="6"> Literature </li> </ul> </li> <li rel="7"> Business &amp; Economy </li> <li rel="8"> Computers &amp; Internet </li> <li rel="9"> Education </li> <li rel="11"> Entertainment <ul> <li rel="12"> Movies </li> <li rel="13"> TV Shows </li> <li rel="14"> Music </li> <li rel="15"> Humor </li> </ul> </li> <li rel="10"> Health </li> And here is my SQL that I have to work with. -- -- Table structure for table `categories` -- CREATE TABLE IF NOT EXISTS `categories` ( `id` mediumint(8) NOT NULL auto_increment, `dd_id` mediumint(8) NOT NULL, `parent_id` mediumint(8) NOT NULL, `cat_name` varchar(256) NOT NULL, `cat_order` smallint(4) NOT NULL, PRIMARY KEY (`id`) ) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ; So I know that I am going to need at least 1 foreach loop to generate the first level of categories. What I don't know is how to iterate inside each loop and check for parents and do that in a dynamic way so that there could be an endless tree of children. Thanks for any help you can offer. Tim

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• How to distort the desktop screen

  - by HaifengWang

  Hi friends, I want to change the shape of the desktop screen, so what are displayed on the desktop will be distorted at the same time. And the user can still operate the PC with the mouse on the distorted desktop(Run the applications, Open the "My Computer" and so on). I think I must get the projection matrix of the screen coordinate at first. Then transform the matrix, and map the desktop buffer image to the distorted mesh. Are there any interfaces which can modify the shape of the desktop screen in OpenGL or DirectX? Would you please give me some tip on it. Thank you very much in advance. Please refer to the picture from http://oi53.tinypic.com/bhewdx.jpg BR, Haifeng Addition1: I'm sorry! Maybe I didn't express clearly what I want to implement. What I want to implement is to modify the shape of the screen. So we can distort the shapes of all the applications which are run on Windows at the same time. For example that the window of "My Computer" will be distorted with the distortion of the desktop screen. And we can still operate the PC with mouse from the distorted desktop(Click the shortcut to run a program). Addition2: The projection matrix is just my assume. There isn't any desktop projection matrix by which the desktop surface is projected to the screen. What I want to implement is to change the shape of the desktop, as the same with mapping the desktop to an 3D mesh. But the user can still operate the OS on the distorted desktop(Click the shortcut to run a program, open the ie to surf the internet). Addition3: The shapes of all the programs run on the OS are changed with the distortion of the screen. It's realtime. The user can still operate the OS on the distorted screen as usually. Maybe we can intercept or override the GPU itself to implement the effect. I'm investigating GDI, I think I can find some clue for that. The first step is to find how to show the desktop on the screen.

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• error in encryption program

  - by Raja

  #include<iostream> #include<math.h> #include<string> using namespace std; int gcd(int n,int m) { if(m<=n && n%m ==0) return m; if(n<m) return gcd(m,n); else return gcd(m,n%m); } int REncryptText(char m) { int p = 11, q = 3; int e = 3; int n = p * q; int phi = (p - 1) * (q - 1); int check1 = gcd(e, p - 1); int check2 = gcd(e, q - 1); int check3 = gcd(e, phi); // // Compute d such that ed = 1 (mod phi) //i.e. compute d = e-1 mod phi = 3-1 mod 20 //i.e. find a value for d such that phi divides (ed-1) //i.e. find d such that 20 divides 3d-1. //Simple testing (d = 1, 2, ...) gives d = 7 // double d = Math.Pow(e, -1) % phi; int d = 7; // public key = (n,e) // (33,3) //private key = (n,d) //(33 ,7) double g = pow(m,e); int ciphertext = g %n; // Now say we want to encrypt the message m = 7, c = me mod n = 73 mod 33 = 343 mod 33 = 13. Hence the ciphertext c = 13. //double decrypt = Math.Pow(ciphertext, d) % n; return ciphertext; } int main() { char plaintext[80],str[80]; cout<<" enter the text you want to encrpt"; cin.get(plaintext,79); int l =strlen(plaintext); for ( int i =0 ; i<l ; i++) { char s = plaintext[i]; str[i]=REncryptText(s); } for ( int i =0 ; i<l ; i++) { cout<<"the encryption of string"<<endl; cout<<str[i]; } return 0; }

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• JQuery Cascade dropdown problem?

  - by omoto

  Hi All! I'm using JQuery based Cascade plugin probably it's working, but I found a lot of problems with it Maybe somebody already faced with this plugin and maybe could help. So, I using this plugin for location filtration Here comes my CS code: public JsonResult getChildren(string val) { if (val.IsNotNull()) { int lId = val.ToInt(); Cookie.Location = val.ToInt(); var forJSON = from h in Location.SubLocationsLoaded(val.ToInt()) select new { When = val, Id = h.Id, Name = h.Name, LocationName = h.LocationType.Name }; return this.Json(forJSON.ToArray()); } else return null; } Here comes my JS code: <script type="text/javascript"> function commonMatch(selectedValue) { $("#selectedLocation").val(selectedValue); return this.When == selectedValue; }; function commonTemplate(item) { return "<option value='" + item.Id + "'>" + item.Name + "</option>"; }; $(document).ready(function() { $("#chained_child").cascade("#Countries", { ajax: { url: '/locations/getChildren' }, template: commonTemplate, match: commonMatch }).bind("loaded.cascade", function(e, target) { $(this).prepend("<option value='empty' selected='true'>------[%Select] Län------</option>"); $(this).find("option:first")[0].selected = true; }); $("#chained_sub_child").cascade("#chained_child", { ajax: { url: '/locations/getChildren' }, template: commonTemplate, match: commonMatch }).bind("loaded.cascade", function(e, target) { $(this).prepend("<option value='empty' selected='true'>------[%Select] Kommun------</option>"); $(this).find("option:first")[0].selected = true; }); $("#chained_sub_sub_child").cascade("#chained_sub_child", { ajax: { url: '/locations/getChildren' }, template: commonTemplate, match: commonMatch }).bind("loaded.cascade", function(e, target) { $(this).prepend("<option value='empty' selected='true'>------[%Select] Stad------</option>"); $(this).find("option:first")[0].selected = true; }); }); I added one condition to jquery.cascade.ext.js if (opt.getParentValue(parent) != "empty") $.ajax(_ajax); To prevent Ajax request without selected value, but I faced with problem, when I reset selection in first box 3d box and bellow does not refresh: And second issue: I would like to know where is best place to inject my own function that will do something, with one requirement - I need to know that all boxes finished work. If somebody worked within let me know maybe we could together find solution. Thanks in advice...

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• Problem with character encoding on email sent via PHP?

  - by cosgrove

  Hi everybody, Having some trouble sending properly formatted HTML e-mail from a PHP script. I am running PHP 5.3.0 and Apache 2.2.11 on Windows XP Professional. The output looks like this: Agent Summary for Support on Tuesday April 20 2010=20 Ext. Name Time Volume 137 Agent Name 01:27:25 1 138 =09 00:00:00 0 139 =09 00:00:00 0 You see the =20 and =09 in there? If you look at the HTML you also see = signs being turned into =3D. I figure this is a character encoding issue as I read the following at Wikipedia: ISO-8859-1 and Windows-1252 confusion It is very common to mislabel text data with the charset label ISO-8859-1, even though the data is really Windows-1252 encoded. In Windows-1252, codes between 0x80 and 0x9F are used for letters and punctuation, whereas they are control codes in ISO-8859-1. Many web browsers and e-mail clients will interpret ISO-8859-1 control codes as Windows-1252 characters in order to accommodate such mislabeling but it is not standard behaviour and care should be taken to avoid generating these characters in ISO-8859-1 labeled content. This looks like the problem but I don't know how to fix. My code looks like this: ob_start(); report_queue_summary($yesterday,$yesterday,$first_extension,$last_extension,$queue); $body_report = ob_get_contents(); ob_end_clean(); $body_footer = "This is an automatically generated e-mail."; $message = new Mail_mime(); $html = $body_header.$body_report.$body_footer; $message->setHTMLBody($html); $body = $message->get(); $extraheaders = array("From"=>"***redacted***","To"=>$recipient, "Subject"=>"Agent Summary for $yesterday [$queue]", "Content-type"=>"text/html; charset=iso-8859-1"); $headers = $message->headers($extraheaders); # setup e-mail; $host = "*********"; $port = "26"; $username = "*****"; $password = "*****"; # Send e-mail $smtp = Mail::factory('smtp', array ('host' => $host, 'port' => $port, 'auth' => true, 'username' => $username, 'password' => $password)); $mail = $smtp->send($recipient, $extraheaders, $body); if (PEAR::isError($mail)) { echo("" . $mail->getMessage() . ""); } else { echo("Message successfully sent!"); } Is the problem that I'm using output buffering?

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• Calculating the Angle Between Two vectors Using Dot Product

  - by P. Avery

  I'm trying to calculate the angle between two vectors so that I can rotate a character in the direction of an object in 3D space. I have two vectors( character & object), loc_look, and modelPos respectively. For simplicity's sake I am only trying to rotate along the up axis...yaw. loc_look = D3DXVECTOR3 (0, 0, 1), modelPos = D3DXVECTOR3 (0, 0, 15); I have written this code which seems to be the correct calculations. My problem arises, seemingly, because the rotation I apply to the character's look vector(loc_look) exceeds the value of the object's position (modelPos). Here is my code: BOOL CEntity::TARGET() { if(graphics.m_model->m_enemy) { D3DXVECTOR3 modelPos = graphics.m_model->position; D3DXVec3Normalize(&modelPos, &modelPos); //D3DXVec3Normalize(&loc_look, &loc_look); float dot = D3DXVec3Dot(&loc_look, &modelPos); float yaw = acos(dot); BOOL neg = (loc_look.x > modelPos.x) ? true : false; switch ( neg ) { case false: Yaw(yaw); return true; case true: Yaw(-yaw); return true; } } else return false; } I rotate the character's orientation matrix with the following code: void CEntity::CalculateOrientationMatrix(D3DXMATRIX *orientationMatrix) { D3DXMatrixRotationAxis(&rotY, &loc_up, loc_yaw); D3DXVec3TransformCoord(&loc_look, &loc_look, &rotY); D3DXVec3TransformCoord(&loc_right, &loc_right, &rotY); D3DXMatrixRotationAxis(&rotX, &loc_right, loc_pitch); D3DXVec3TransformCoord(&loc_look, &loc_look, &rotX); D3DXVec3TransformCoord(&loc_up, &loc_up, &rotX); D3DXMatrixRotationAxis(&rotZ, &loc_look, loc_roll); D3DXVec3TransformCoord(&loc_up, &loc_up, &rotZ); D3DXVec3TransformCoord(&loc_right, &loc_right, &rotZ); *orientationMatrix *= rotX * rotY * rotZ; orientationMatrix->_41 = loc_position.x; orientationMatrix->_42 = loc_position.y; orientationMatrix->_43 = loc_position.z; //D3DXVec3Normalize(&loc_look, &loc_look); SetYawPitchRoll(0,0,0); // Reset Yaw, Pitch, & Roll Amounts } Also to note, the modelPos.x increases by 0.1 each iteration so the character will face the object as it moves along the x-axis... Now, when I run program, in the first iteration everything is fine(I haven't rotated the character yet). On the second iteration, the loc_look.x value is greater than the modelPos.x value(I rotated the character too much using the angle specified with the dot product calculations in the TARGET function). Therefore on the second iteration my code will rotate the character left to adjust for the difference in the vectors' x values... How can I tighten up the measurements so that I do not rotate my character's look vector by too great a value?

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