Panning a 3d viewport in 2d direction with rotated camera

Posted by Noob Game Developer on Game Development See other posts from Game Development or by Noob Game Developer
Published on 2012-10-19T12:25:06Z Indexed on 2012/10/19 17:20 UTC
Read the original article Hit count: 249

Filed under:

3d

|

actionscript-3

|

camera

I am using below code to pan the viewport (action script 3 code using flare3d framework)

_mainCamera.x-= Input3D.mouseXSpeed;
_mainCamera.z+= Input3D.mouseYSpeed;

Where as Input3D.mouse[X|Y]Speed gives the displacement of the mouse on the X/Y axis starting from the position of the last frame.

This works perfect if my camera is not rotated. However, if I rotate the camera (x by 30, y by 60) and pan the camera then it goes wrong. Which is actually correctly panning according to the code. But this is not desired and I know I need to do some math to get the correct x/y which I am not aware of it.

Can some one help me achieving it?

Update:

I am getting an Idea but I am not sure how to do it :(

Get the mouseX/Y deltas (xd,yd)
Get the current camera coords (pos3d)
Convert to screen coords (pos2d)
Add deltas to screen coords (pos2d+ (xd,yd))
Convert above coords to 3d coords

© Game Development or respective owner

Related posts about 3d

How to convert videos to 3D format so that I can watch them with 3D glasses

as seen on Super User - Search for 'Super User'
Are there any softwares to convert 2D videos to 3D (preferably XviD avi) so that I can watch them with 3D glasses? No matter if it's freeware or shareware. >>> More
In Email, Image (img) Source (src) Tags are rewritten as relative links. How to fix?

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm working on sending out an html based email, and every time it sends the image src tags and some of the anchor href tags are modified to be relative url's. Update 2: This is happening between when the body of the email is generated and sent and when it arrives in my inbox. Update: I am using… >>> More
WPF 3D - Need help writing conversion methods between 2D and 3D (Point3DToPoint and PointAndZToPoint

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm new to WPF 3D, so I may just be missing something obvious, but how do I convert from 3D to 2D and (for a given z location) from 2D to 3D? Specifically, I need two conversion methods: Point3DToPoint - If I have an (x, y, z) coordinate in the 3D world, how do I determine the (x, y) coordinate… >>> More
3D point on 3D mesh surface

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi All, How can I get a 3D point on 3D mesh surface made up triangulars ? The 3D point may be anywhere on the 3D surface. Thanks. M.Ken >>> More
Matlab 3d volume visualization and 3d overlay

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, so the question ist pretty much the title. I have a 3d volume loaded as raw data [256, 256, 256] = size(A). It contains only values of zero's and ones, where the 1's represent the structure and 0's the "air". I want to visualize the structure in matlab and then run an algorithm on it and put… >>> More

Related posts about actionscript-3

actionscript - testing actionscript via command line

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, I would like to know if is there any easy way to test actionscript by using some kind of application like ruby's irb or javasctip spidermonkey where you can just open up your terminal and type the code straight away. This would be a good time saver when speaking of actionscript, since to test… >>> More
using SeekToNavCuePoint with Custom Cue Points created by ActionScript

as seen on Stack Overflow - Search for 'Stack Overflow'
i have custom flvPlayBack player, i want to do like add Custom CuePoints using ActionScript and making one button Event , On click of that button , Flv should seek to that CuePoints added using ActionScript . I am using below code to do that. var rtn_obj:Object; //create cue point object my_FLVPlybk… >>> More
How's ActionScript 3.0 supported on symbian,android,iphone and windowCE?

as seen on Stack Overflow - Search for 'Stack Overflow'
Anyone knows? To deal with all the things you can do with FMS3, you have two additional language Application Program Interfaces (APIs). Both APIs are extensions of ActionScript and are called Client-Side Media ActionScript and Server-Side Media ActionScript, or in this book, simply… >>> More
Embed custom font in Actionscript 3 project

as seen on Stack Overflow - Search for 'Stack Overflow'
I want to display "Hello World" with calibri.ttf using only AC3. How would I do that? Found two solutions on the web but I cannot use any of them - The Adobe documentation site requires the use of Flash CS4. (Don't know how to use this in Flex Builder) - The embed tag method requires FLEX SDK Is… >>> More
Embed custom font in Actionscript 3 project

as seen on Stack Overflow - Search for 'Stack Overflow'
I want to display "Hello World" with calibri.ttf using only AC3. How would I do that? Found two solutions on the web but I cannot use any of them - The Adobe documentation site requires the use of Flash CS4. (Don't know how to use this in Flex Builder) - The embed tag method requires FLEX SDK Is… >>> More