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• Changing Ogre3D terrain lighting in real time

  - by lezebulon

  I'm looking at the Ogre 3D library and I'm browsing through some examples / tutorials. My question is about terrain. There are a few examples showing how great the terrain system is, but I think that the global illumination and shadows of the terrain have to be pre-computed, which kinda makes it impossible to integrate this with a day / night cycle. Is there a way to change the terrain light sources in real time? If so it is possible to do it and keep a decent FPS?

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• Les accesseurs et les détails d'implémentation, un billet de Guillaume Belz

  C'est une discussion qui revient régulièrement sur le chat de Developpez.com. Une personne demande comment fait-on pour accéder aux variables membres privées d'une classe et on lui répond de créer des getter et setter. Viens alors un C++ien moyen (c'est-à-dire un casse-pied, en général moi) qui hurle au scandale et sort l'adage bien connu : "les accesseurs, c'est le mal". S'en suit une discussion sur pourquoi les accesseurs sont à éviter, quand j'ai le temps et l'humeur.

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• Oracle Turkey Applications Strategy Update Event

  - by [email protected]

  Oracle Turkey gathered its wide range of customers and associates in "Oracle Applications Strategy Update" event in Istanbul at 17 March of 2010 as a part of worldwide Global Applications Smart Strategies Tour.  The program discussed, the new technologies and, with real-world examples, presented strategies for  leveraging technology to succeed in today's challenging business environment.    

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• How to use GDK with Quickly

  - by max246

  I trying to use the library gdk for scale down an image and apply it to a GdkImage. This is the code pixbuf = Gdk.pixbuf_new_from_file(fileName) pixbuf = pixbuf.scale_simple(100, 100, Gdk.INTERP_BILINEAR) The problem is that python can't find Gdk even if I use everything in lowercase Error: pixbuf = Gdk.pixbuf_new_from_file(fileName) NameError: global name 'Gdk' is not defined I don't know what should I do because I tried to import Gdk but nothing is changed

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• Ray Intersecting Plane Formula in C++/DirectX

  - by user4585

  I'm developing a picking system that will use rays that intersect volumes and I'm having trouble with ray intersection versus a plane. I was able to figure out spheres fairly easily, but planes are giving me trouble. I've tried to understand various sources and get hung up on some of the variables used within their explanations. Here is a snippet of my code: bool Picking() { D3DXVECTOR3 vec; D3DXVECTOR3 vRayDir; D3DXVECTOR3 vRayOrig; D3DXVECTOR3 vROO, vROD; // vect ray obj orig, vec ray obj dir D3DXMATRIX m; D3DXMATRIX mInverse; D3DXMATRIX worldMat; // Obtain project matrix D3DXMATRIX pMatProj = CDirectXRenderer::GetInstance()->Director()->Proj(); // Obtain mouse position D3DXVECTOR3 pos = CGUIManager::GetInstance()->GUIObjectList.front().pos; // Get window width & height float w = CDirectXRenderer::GetInstance()->GetWidth(); float h = CDirectXRenderer::GetInstance()->GetHeight(); // Transform vector from screen to 3D space vec.x = (((2.0f * pos.x) / w) - 1.0f) / pMatProj._11; vec.y = -(((2.0f * pos.y) / h) - 1.0f) / pMatProj._22; vec.z = 1.0f; // Create a view inverse matrix D3DXMatrixInverse(&m, NULL, &CDirectXRenderer::GetInstance()->Director()->View()); // Determine our ray's direction vRayDir.x = vec.x * m._11 + vec.y * m._21 + vec.z * m._31; vRayDir.y = vec.x * m._12 + vec.y * m._22 + vec.z * m._32; vRayDir.z = vec.x * m._13 + vec.y * m._23 + vec.z * m._33; // Determine our ray's origin vRayOrig.x = m._41; vRayOrig.y = m._42; vRayOrig.z = m._43; D3DXMatrixIdentity(&worldMat); //worldMat = aliveActors[0]->GetTrans(); D3DXMatrixInverse(&mInverse, NULL, &worldMat); D3DXVec3TransformCoord(&vROO, &vRayOrig, &mInverse); D3DXVec3TransformNormal(&vROD, &vRayDir, &mInverse); D3DXVec3Normalize(&vROD, &vROD); When using this code I'm able to detect a ray intersection via a sphere, but I have questions when determining an intersection via a plane. First off should I be using my vRayOrig & vRayDir variables for the plane intersection tests or should I be using the new vectors that are created for use in object space? When looking at a site like this for example: http://www.tar.hu/gamealgorithms/ch22lev1sec2.html I'm curious as to what D is in the equation AX + BY + CZ + D = 0 and how does it factor in to determining a plane intersection? Any help will be appreciated, thanks.

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• What Precalculus knowledge is required before learning Discrete Math Computer Science topics?

  - by Ein Doofus

  Below I've listed the chapters from a Precalculus book as well as the author recommended Computer Science chapters from a Discrete Mathematics book. Although these chapters are from two specific books on these subjects I believe the topics are generally the same between any Precalc or Discrete Math book. What Precalculus topics should one know before starting these Discrete Math Computer Science topics?: Discrete Mathematics CS Chapters 1.1 Propositional Logic 1.2 Propositional Equivalences 1.3 Predicates and Quantifiers 1.4 Nested Quantifiers 1.5 Rules of Inference 1.6 Introduction to Proofs 1.7 Proof Methods and Strategy 2.1 Sets 2.2 Set Operations 2.3 Functions 2.4 Sequences and Summations 3.1 Algorithms 3.2 The Growths of Functions 3.3 Complexity of Algorithms 3.4 The Integers and Division 3.5 Primes and Greatest Common Divisors 3.6 Integers and Algorithms 3.8 Matrices 4.1 Mathematical Induction 4.2 Strong Induction and Well-Ordering 4.3 Recursive Definitions and Structural Induction 4.4 Recursive Algorithms 4.5 Program Correctness 5.1 The Basics of Counting 5.2 The Pigeonhole Principle 5.3 Permutations and Combinations 5.6 Generating Permutations and Combinations 6.1 An Introduction to Discrete Probability 6.4 Expected Value and Variance 7.1 Recurrence Relations 7.3 Divide-and-Conquer Algorithms and Recurrence Relations 7.5 Inclusion-Exclusion 8.1 Relations and Their Properties 8.2 n-ary Relations and Their Applications 8.3 Representing Relations 8.5 Equivalence Relations 9.1 Graphs and Graph Models 9.2 Graph Terminology and Special Types of Graphs 9.3 Representing Graphs and Graph Isomorphism 9.4 Connectivity 9.5 Euler and Hamilton Ptahs 10.1 Introduction to Trees 10.2 Application of Trees 10.3 Tree Traversal 11.1 Boolean Functions 11.2 Representing Boolean Functions 11.3 Logic Gates 11.4 Minimization of Circuits 12.1 Language and Grammars 12.2 Finite-State Machines with Output 12.3 Finite-State Machines with No Output 12.4 Language Recognition 12.5 Turing Machines Precalculus Chapters R.1 The Real-Number System R.2 Integer Exponents, Scientific Notation, and Order of Operations R.3 Addition, Subtraction, and Multiplication of Polynomials R.4 Factoring R.5 Rational Expressions R.6 Radical Notation and Rational Exponents R.7 The Basics of Equation Solving 1.1 Functions, Graphs, Graphers 1.2 Linear Functions, Slope, and Applications 1.3 Modeling: Data Analysis, Curve Fitting, and Linear Regression 1.4 More on Functions 1.5 Symmetry and Transformations 1.6 Variation and Applications 1.7 Distance, Midpoints, and Circles 2.1 Zeros of Linear Functions and Models 2.2 The Complex Numbers 2.3 Zeros of Quadratic Functions and Models 2.4 Analyzing Graphs of Quadratic Functions 2.5 Modeling: Data Analysis, Curve Fitting, and Quadratic Regression 2.6 Zeros and More Equation Solving 2.7 Solving Inequalities 3.1 Polynomial Functions and Modeling 3.2 Polynomial Division; The Remainder and Factor Theorems 3.3 Theorems about Zeros of Polynomial Functions 3.4 Rational Functions 3.5 Polynomial and Rational Inequalities 4.1 Composite and Inverse Functions 4.2 Exponential Functions and Graphs 4.3 Logarithmic Functions and Graphs 4.4 Properties of Logarithmic Functions 4.5 Solving Exponential and Logarithmic Equations 4.6 Applications and Models: Growth and Decay 5.1 Systems of Equations in Two Variables 5.2 System of Equations in Three Variables 5.3 Matrices and Systems of Equations 5.4 Matrix Operations 5.5 Inverses of Matrices 5.6 System of Inequalities and Linear Programming 5.7 Partial Fractions 6.1 The Parabola 6.2 The Circle and Ellipse 6.3 The Hyperbola 6.4 Nonlinear Systems of Equations

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• What is the Soul of SEO?

  These days are the days of professional SEO in the worldwide market today. Wherever we see, we find the reputation of search engine optimization in the global market nowadays. One of the most fascinating perspectives is that it has plenty of rewards for the modern day industries.

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• A Temporary Disagreement

  Last month, Phil Factor caused a furore amongst some MVPs with an article that dared to suggest that for reasonably small-scale strategic uses, and with a bit of due care and testing, table variables are a "good thing". Not everyone shared his opinion. The Future of SQL Server MonitoringMonitor wherever, whenever with Red Gate's SQL Monitor. See it live in action now.

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• Enabling EUS support in OUD 11gR2 using command line interface

  - by Sylvain Duloutre

  Enterprise User Security (EUS) allows Oracle Database to use users & roles stored in LDAP for authentication and authorization.Since the 11gR2 release, OUD natively supports EUS. EUS can be easily configured during OUD setup. ODSM (the graphical admin console) can also be used to enable EUS for a new suffix. However, enabling EUS for a new suffix using command line interface is currently not documented, so here is the procedure: Let's assume that EUS support was enabled during initial setup.Let's o=example be the new suffix I want to use to store Enterprise users. The following sequence of command must be applied for each new suffix: // Create a local database holding EUS context infodsconfig create-workflow-element --set base-dn:cn=OracleContext,o=example --set enabled:true --type db-local-backend --element-name exampleContext -n // Add a workflow element in the call path to generate on the fly attributes required by EUSdsconfig create-workflow-element --set enabled:true --type eus-context --element-name eusContext --set next-workflow-element:exampleContext -n // Add the context to a workflow for routingdsconfig create-workflow --set base-dn:cn=OracleContext,o=example --set enabled:true --set workflow-element:eusContext --workflow-name exampleContext_workflow -n //Add the new workflow to the appropriate network groupdsconfig set-network-group-prop --group-name network-group --add workflow:exampleContext_workflow -n // Create the local database for o=exampledsconfig create-workflow-element --set base-dn:o=example --set enabled:true --type db-local-backend --element-name example -n // Create a workflow element in the call path to the user data to generate on the fly attributes expected by EUS dsconfig create-workflow-element --set enabled:true --set eus-realm:o=example --set next-workflow-element:example --type eus --element-name eusWfe// Add the db to a workflow for routingdsconfig create-workflow --set base-dn:o=example --set enabled:true --set workflow-element:eusWfe --workflow-name example_workflow -n //Add the new workflow to the appropriate network groupdsconfig set-network-group-prop --group-name network-group --add workflow:example_workflow -n  // Add the appropriate acis for EUSdsconfig set-access-control-handler-prop \           --add global-aci:'(target="ldap:///o=example")(targetattr="authpassword")(version 3.0; acl "EUS reads authpassword"; allow (read,search,compare) userdn="ldap:///??sub?(&(objectclass=orclservice)(objectclass=orcldbserver))";)' dsconfig set-access-control-handler-prop \       --add global-aci:'(target="ldap:///o=example")(targetattr="orclaccountstatusevent")(version 3.0; acl "EUS writes orclaccountstatusenabled"; allow (write) userdn="ldap:///??sub?(&(objectclass=orclservice)(objectclass=orcldbserver))";)' Last but not least you must adapt the content of the ${OUD}/config/EUS/eusData.ldif  file with your suffix value then inport it into OUD.

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• SQL Server and the XML Data Type : Data Manipulation

  The introduction of the xml data type, with its own set of methods for processing xml data, made it possible for SQL Server developers to create columns and variables of the type xml. Deanna Dicken examines the modify() method, which provides for data manipulation of the XML data stored in the xml data type via XML DML statements.

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• Windows Azure Training Kit &ndash; August 2012 Released

  - by Clint Edmonson

  In this release of the training kit we have delivered 41 HOLs covering a wide variety of bug fixes and screen shot updates for Visual Studio 2012. We now have 35 Presentations with new content surrounding Windows Azure SQL Database, SQL Federation, Reporting and Data Sync (4) as well as Security & Identity (1); and Building Scalable, Global, and Highly Available Web Apps (1). Head over to http://aka.ms/WATK and download it now!

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• Prolog - How do you distinguish between just a string, and a variable? [closed]

  - by Mr Prolog

  When you are querying a Prolog database, often you will use terms that start with an uppercase letter as your variables. However, let's say that one of the constraints on your query is that a person's location must be "Dallas", and you want to query all the information in the database who meet those specifications. How would do you correctly make sure that Dallas is not interpreted as a variable to store a value in, and is interpreted as a string instead, for usage as a constraint on the query?

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• Are non Turing-complete languages considered programming languages at all?

  - by user1598390

  Reading a recent question: Is it actually possible to have a 'useful' programming language that isn't Turing complete?, I've come to wonder if non Turing-complete programming languages are considered programming languages at all. Since Turing-completeness means a language has to have variables to store values as well as control structures ( for, while )... Is a language that lacks these features considered a programming language ?

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• VoIP Phone Service For The New Era Of Communication

  The influence of VoIP phone service and its technology of Voice termination have grown over the years. This technology has facilitated the global extinctions of phone calls at low cost rate. There is... [Author: Dennis Smith - Computers and Internet - March 30, 2010]

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• Additional Columns in StreamInsight Event Flow Debugger

  This tool is excellent when investigating what is going on in your StreamInsight Streams.  I was looking through the menu items recently and went to Query => Event Fields I found that there were a couple of columns not added by default to the event viewer (Reminds me of the fact that the Variables viewer in SSIS hides columns also) Latency NewEndTime EnqueueTime Here they all are together.     This gives us even more information about what is going on

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• Problem in installing player/gazebo

  - by usama yaseen

  I am using ubuntu 10.04 (64-bit), i have sucessfully installed all the dependancies of player and gazebo, then i installed player 3.01 and then gazebo 0.9,Now the when i run this gazebo worlds/pioneer2dx.world I get a gazebo interface, everything is ok uptill now, but when i run this cd gazebo/player player gazebo.cfg player: error while loading shared libraries: libplayerdrivers.so.3.0: cannot open shared object file: No such file or directory I guess the problem is somewhere in the environmental variables, can anyone please help me to solve this?

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• typeset: not found error when executing shell script. Am I missing a package or something?

  - by user11045

  Hi, below is the error and corresponding script lines: spec@Lucifer:~/Documents/seagull.svn.LINUX$ ./build.ksh ./build.ksh: 36: typeset: not found ./build.ksh: 39: typeset: not found ./build.ksh: 44: function: not found Command line syntax of - options -exec : mode used for compilation (default RELEASE) -target : target used for compilation (default all) -help : display the command line syntax ./build.ksh: 52: function: not found ERROR: spec@Lucifer:~/Documents/seagull.svn.LINUX$ Script Init of variables BUILD_TARGET=${BUILD_DEFAULT_TARGET} BUILD_EXEC=${BUILD_DEFAULT_EXEC} typeset -u BUILD_OS=uname -s | tr '-' '_' | tr '.' '_' | tr '/' '_' BUILD_CODE_DIRECTORY=code BUILD_DIRECTORY=pwd typeset -u BUILD_ARCH=uname -m | tr '-' '_' | tr '.' '_' | tr '/' '_' BUILD_VERSION_FILE=build.conf BUILD_DIST_MODE=0 BUILD_FORCE_MODE=0

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• What to expect during an interview with Senior Development Exec?

  - by Umanga

  I passed first two technical interviews at a global e-commerce company for the position of Senior Software Engineer. I was told that there are two more interviews ,one with "Senior Development Exec" and another with "HR". 1) I am wondering what kind of questions I should expect during the interview with "Senior Development Exec"? Is is technical,high level architecture related ..etc? 2) During HR interviews,is it Ok to ask about the work-life balance and actual working hours?

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• Why Small Businesses Should Have a Website & Tips on Getting Started

  A small business should have a website in order to increase its level of professionalism. These days, even the smallest business can advertise on a global scale! Furthermore, such advertising is very affordable. It doesn't cost very much money at all to create and run a website. Read this guide to learn more about the advantages of having a site and how to get started!

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• Business Analytics Oracle Partner Advisory Council 2013

  - by Mike.Hallett(at)Oracle-BI&EPM

  72 544x376 WHEN: Friday the 20th of September 2013 (just before OpenWorld) Register by: 1st of August 2013 WHERE: Sofitel San Francisco Bay 223 Twin Dolphin Drive, 94065 REDWOOD CITY, CA, USA Don’t miss this once a year opportunity to meet and drive a closer engagement with Oracle’s global Product Management Team: Oracle global Product Management will host this workshop. Target group: ACE Directors, Lead Consultants and key architects from our partners Topics: Product Development Roadmap, Partner project experience, your feedback, Q&A session For any inquiries please contact [email protected] As part of registering for the event, please note that you will need to complete the BI / EPM PAC-survey. Thank you for taking the time to provide this, your valuable input. The PAC (one for BI, and a separate track for Hyperion) is free of charge, but is only for OPN Specialised member partners, and is subject to availability. (Please do not attend unless you have received a confirmation from Oracle to do so.) Registration Link Coming Soon We do hope you will be able to join us - and I look forward to welcoming you in San Francisco. Normal 0 false false false EN-GB X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;}

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• Preview Oracle E-Business Suite Release 12!

  Steve Miranda, Oracle SVP of Applications Development speaks with Fred about the features and benefits of Oracle E-Business Suite Release 12 and how this release will streamline global operations and move customers father along the path to Oracle Fusion.

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• Le bogue des nombres à virgule flottante refait surface en Java, il plonge le compilateur et les programmes dans des boucles infinies

  Le bogue des nombres à virgule flottante refait surface en Java Et plonge le compilateur et les programmes dans des boucles infinies Mise à jour du 08/02/2011 Quelque temps après sa correction sur PHP, le bogue étrange des nombres à virgule flottante refait surface sur un langage tout aussi populaire : Java. Ce bogue provoquait sur PHP avant sa correction le crash du système par le passage d'un simple paramètre dans l'URL, pour peu que le script convertisse en nombres ou utilise ces variables dans des opérations arithmétiques (pour plus de détails, lire ci-devant) Sur Java, un bogue similaire plon...

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• Pro xy to Direct Connection

  - by Shivam Verma

  I use a Proxy Server with LDAP Authentication for accessing internet. So I need to manually add Server Address and Port in every application that has to connect to internet. Any methods by which I dont need to enter proxy address in my applications ? ( I have entered the authentication and proxy details at : apt.conf and changed the environment variables too. Firefox still asks for username pwd every time I connect)

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• Oracle E-Business Suite Release 12.1 - Delivering Value in Uncertain Times

  With this latest release, Oracle delivers on its Applications Unlimited commitment to continue enhancing our customers' existing investments in Oracle applications. Release 12.1 provides product enhancements across all functional areas and delivers significant industry-specific advancements for key industries. In this podcast, Cliff Godwin, Senior Vice President of Oracle Applications Development shares how Oracle E-Business Suite Release 12.1 provides organizations of all sizes, across all industries and regions with a global business foundation that reduces costs and increases productivity through a portfolio of rapid value solutions, integrated business processes and industry-focused solutions.

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• SEO For Ecommerce Sites

  Ecommerce is a fancy name for just about any business that can be conducted via the internet or other computer systems. The global internet explosion has changed the face of the ecommerce industry for good, increasing both potential profits and the ferocity of competition across virtually every consumer market.

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