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| Some recent topics started on our forums |
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Question about Gilbert-Johnson-Keerthi distance algorithm
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Recently I was reading about the GJK algorithm. The method requires a "support mapping function" which gives the furthest point for a given direction. One of the papers I read stated (period indicates dot product):
Therefore, for the general c... |
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Posted August 20, 2010 12:00:40 AM
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Making Boost.Tokenizer Useful
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Hey everyone, I've recently made a blog post about Boost.Tokenizer. If anyone would care to read and/or give feedback then you can follow this link. Love it or hate it, let me know, thanks! |
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Posted May 3, 2010 12:09:35 PM
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OpenGL 4.0
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It looks like the spec for OpenGL 4.0 has come out: http://www.opengl.org/registry/
Reading through it, it looks like the most notable change is the addition of "Tessellation Control Processor" and "Tessellation Evaluation Processor". From the GLS... |
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Posted March 11, 2010 10:50:51 AM
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"Start Without Debugging" causes program crash in Release mode
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Hey all,
I've been pretty perplexed by this problem I discovered today. It seems that when I run the program in release mode using "Start Without Debugging", it crashes at some points during execution. It's hard to pin down exactly what points in... |
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Posted March 13, 2010 4:59:22 PM
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Untitled Game
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Hey everyone, this is my first IotD submission! These images are from a game I've been working on. It's for an interactive graphics class I'm taking but I'm going to continue the project past the class. I don't have a title for it quite yet, and... |
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Posted March 1, 2010 11:37:15 AM
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limiting player speed
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Hey everyone, I have a question about how to limit a player's speed. I have implemented a simple physics system: every player has a mass, position, velocity, and net force that is being applied to them. At every frame, the player's velocity is added... |
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Posted February 21, 2010 12:28:06 PM
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Advanced Template Question
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While trying to write a matrix class I stumbled upon the following problem. I started by constructing a basic matrix template:
template< int rows,
int cols,
class ScalarType,
template< int, int, typename > class StoragePolicy >... |
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Posted May 11, 2009 9:55:51 PM
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Grad school
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Hey everyone,
I'm in my last year of undergrad so I'm now looking into grad schools. One of the areas I'm interested in is computer graphics, so I was wondering: does anyone know of any good schools for computer graphics? I've heard UNC is goo... |
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Posted September 29, 2008 11:08:45 AM
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Design question I can't sum up in a sentence
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So I've been writing some code to build and traverses a kd-tree, and to help with code reuse I've created an abstract class called kdPrimitive, which defines methods called Intersects, and all that fun stuff. The Intersects method returns a struct ca... |
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Posted September 21, 2008 9:58:32 PM
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Linking d3dx with Visual Studio
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Hey all,
I'm having a strange problem building the code from the book Programming a Multiplayer FPS in DirectX. I did a little modification on the game and I compiled the code on two separate computers (both had project files that came wit... |
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Posted December 5, 2007 12:15:28 AM
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View All Topics Started By This User
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| Some recent replies made on our forums |
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Question about Gilbert-Johnson-Keerthi distance algorithm
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After reading a bit more, I think that the reason for using the support mapping function is not speed, but rather it eliminates the need to explicitly compute the Minkowski difference. In addition, swept volumes become easy to compute with the simple... |
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Posted August 20, 2010 12:44:53 AM
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MS3D Trianglebased mesh to VBO arrays
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Quote:Original post by Trefall
I could probably also extract each vertex normal like I do the indices. But how about the texture coords? Since each triangle has a shared tex-coord, this means that for each vertex that is shared between 4 triangles,... |
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Posted May 1, 2010 12:17:27 PM
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future designer...hopefully
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If you'd like to take lots of classes to see what you like then I'd suggest that you find a college which has an "open options" program that lets you explore a general field of study. |
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Posted May 1, 2010 12:06:57 PM
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Deferred Lighting w/ FBOs and GLSL
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I was wondering the same thing about gl_FragData[] being deprecated so after some research I found that you can use an array named whatever you want as the output variable. In the shader it looks like
out vec4 out_data[ 3 ];
where 3 is the numb... |
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Posted April 22, 2010 7:24:06 AM
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C++ math lib - error : return value or exception?
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In my math library I return std::numeric_limits< float >::infinity( ) for failed intersection tests. They can happen fairly often so I think exceptions are too heavy-weight there. |
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Posted April 21, 2010 7:24:40 AM
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multiple key input
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What you need to do is create an array that holds the status of each key (pressed or not) which gets updated in the key method (you will also need to add a keyup method, using glutKeyboardUpFunc). Then, in your main loop (rather than in the key metho... |
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Posted April 15, 2010 10:21:21 PM
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Which job?
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That is an interesting question, man. Given that I'm young and I'm not sure if what I'm currently doing is what I really want to do, I would lean towards Job 2. |
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Posted April 13, 2010 4:14:23 PM
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unknown matrix
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Let P_a_i be a vertex from mesh A and P_b_i be a vertex from mesh B.
Let T be our unknown transformation.
We have that P_b_i = T * P_a_i for all i. Written a different way:
| P_b_i_x | | T_11 T_12 T_13 T_14 | | P_a_i_x |
| P_b_i_y | = | T... |
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Posted April 12, 2010 1:50:03 PM
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2D Collision Detection, Using Speed, Your Ideas!?
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The first trick in this situation is that rather than testing a moving circle against a rectangle, we can actually test a moving point against an expanded rectangle. To do this, we create a new rectangle whose sides have all been "pushed out" by the... |
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Posted April 8, 2010 7:48:56 AM
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Light Theory Questions
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Check out, "Principles of Digital Image Synthesis" by Andrew Glassner |
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Posted April 2, 2010 9:08:38 AM
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View All Replies Made By This User
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