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| bio | website | |
|---|---|---|
| location | France | |
| age | 24 | |
| visits | member for | 1 year, 7 months |
| seen | 2 hours ago | |
| stats | profile views | 37 |
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Aug 5 |
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Draw a 3D object at specific coordinates on the screen Thanks for your response. But I don't understand your explanation about ray and position on the ray. I understand that a 3D point is converted in 2D screen point by doing World * View * Projection and doing the opposite will convert from 2D to 3D. I've tried to invert the WVP matrix and transform my 2D point, and set the 3D position to the matrix of my model. But it doesn't work. When I move my camera, my model moves but doesn't stay at the same position on the screen. I think i've missed something, probably what you try to explain about ray and "depth of monitor". |
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Feb 17 |
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Which Side Was Hit? Already answered here : gamedev.stackexchange.com/questions/9741/… |
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Feb 16 |
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Resource not found: testdata/alphamap.png It seems when you run your project you're running Slick tests. I'm not very good in Java; but i've created a new project in Eclipse, added the .jar of the Slick library in my Build Path and copy/paste some code coming from the tutorial. It works well. I'm not quite sure but did you use the .jar or did you copy the source code of Slick in your project? I think you're not using .jar in order to use Slick and this will explain why tests are launched. am I wrong? |
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Feb 16 |
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Resource not found: testdata/alphamap.png Can you post the piece of code where the exception occurred. |
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Feb 10 |
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Is GLUT obsolete? Sorry for the misunderstanding, i think i've badly written my previous comment. By giving a link to the FreeGlut web page i wasn't saying that FreeGlut is outdated. I wanted to show the section "Why?" of the article where the author was saying that GLUT latest version was released in 1998. FreeGlut isn't outdated and represents a better alternative to GLUT. |
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Feb 10 |
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Is GLUT obsolete? Here the release note of GLUT 3.7 dated of 7 may 1998 : freeware.sgi.com/Installable/glut-3.7.html. And here freeglut sourceforge webpage saying GLUT was abandonned in 1998 : freeglut.sourceforge.net |
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Feb 1 |
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How can the Unreal Development Kit be used with Android? Yes fragmentation is a major problem for them. And this problem leads to performance issues. I have find this interview with Tim Sweeney (sorry but it's in french, use google translate) : frandroid.com/actualites-generales/… . And this one with Mark Rein : 3dg.me/gamedev/udk/udk-eventually-will-get-android-support |
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Dec 28 |
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Frame Animation in Android Same kind of question as here gamedev.stackexchange.com/questions/18003/… |
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Dec 8 |
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How does networking in XNA work? Yes you're right, i've forgotten it's for xbox, he can't uses lidgren. |
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Dec 7 |
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XNA model texture from file By searching google i find these links wich can help you : jamesewelch.com/2008/03/07/… and wiki.flightgear.org/Textures_%26_Texture_Maps_in_SketchUp |
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Dec 7 |
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XNA model texture from file To render a texture on a model, it had to have uv coordinate. Does your model comes from a graphics software? The easiest solution to do this is to use a graphics software such as 3DS Max, Maya or Blender. You will draw a model and then apply a texture to it. Then these software will give you a file containing all informations about your model. After you just have to add it to your project and load it. |
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Dec 6 |
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Where can i find tutoral for Designing building in 3dsmax What kind of building would you like to design? Skyscraper? Monument? |
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Nov 22 |
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Determine corners of a specific plane in the frustum Thanks, it works. One last thing, now i'm curious to know how to do the same with a camera looking anywhere. |
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Nov 22 |
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XNA advanced rotation 3D Finally CreateFromAxisAngle isn't the solution to your problem, I responded too quickly. If you want to rotate around a specific point p, first translate the view matrix of your model to -p, do the rotation and then translate to p. |
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Nov 21 |
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Determine corners of a specific plane in the frustum It works fine since my camera z position is at 0. But does it works if set my camera elsewhere? For exemple if my camera is at (0,0, -50) and the plane i'm looking for is at (0,0, 50). In this exemple, the Z component in tan(FOV/2) * Z has to be 50 (origin to plane) or 100 (camera z-position to plane)? |
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Nov 15 |
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Determine corners of a specific plane in the frustum When i compute tan(FOV/2) * Z, FOV has to be in radian or degrees? |
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Oct 10 |
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XNA - Update vertices property stored in a VertexBuffer I will use one buffer for all my cubes. But i don't know how to do it with my Cube class. Currently one instance haves an array of vertices and an array of indices (so i use only 4 vertices to create a face of the cube), and in my draw method i call GraphicsDevice.indices to set the indices array then GraphicsDevice.SetVertexBuffer and finally DrawIndexedPrimitives. Now if i use only one vertex buffer, i think i need to call SetVertexBuffer one time but how do i set indices and draw my cube? If all my vertices are in the same buffer how the Draw method will know from which vertex to begin? |
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Oct 10 |
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XNA - Update vertices property stored in a VertexBuffer You mean to share one instance of VertexBuffer between all my Cube class instance and not create one VertexBuffer per instance? |
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Oct 9 |
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XNA - Update vertices property stored in a VertexBuffer Call GraphicsDevice.SetVertexBuffer with null parameter works fine. As you say, i can use a shader for changing color. But i would like to change also the position of my vertices. So i need to update the vertex buffer. A question comes to my mind. Call too many times SetVertexBuffer and VertexBuffer.SetData<> function will drop performance? For exemple if i create 1000 cubes and i update theirs position each frame, SetVertexBuffer and VertexBuffer.SetData<> will be called 1000 times. Do you think there's a better solution? |
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Oct 7 |
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XNA - Update vertices property stored in a VertexBuffer When i try to call SetData an InvalidOperationException is throw : You can not call SetData on a resource while it is actively involved in GraphicsDevice. Cancel its association with the device before calling SetData. |
