glut

问题 As I had many problems setting Visual Studio 2008 for using OpenGL I will ask this question that can be useful to some people: Which are the steps to follow in order to use OpenGL with C++ in Visual Studio 2008? 回答1: First of all you need to have a video card and check that it works with OpenGL and the drivers are updated. I used the test in this link to check it. It is also important to check that Visual Studio 2008 is correctly installed and that the following path is created in your

问题 I had installed OpenGL and freeglut in Ubuntu 10.04 and it worked fine in 10.04 and 10.10. But after I upgraded to 11.04, the applications I've developed using OpenGL is not running properly. They're compiling without errors, but when I try to execute them, I get there errors: For GLUT: Xlib: extension "GLX" missing on display ":0.0". freeglut (./a.out): OpenGL GLX extension not supported by display ':0.0' For just OpenGL: Xlib: extension "GLX" missing on display ":0.0". main: X server has no

问题 I started playing around with OpenGL and GLUT. I would like to draw some points, but the problem is that they turn out to be squares, and I would like them to be round dots (filled circles). This is what I do: void onInitialization( ) { glEnable( GL_POINT_SMOOTH ); glEnable( GL_BLEND ); glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ); glPointSize( 6.0 ); } void onDisplay() { glClearColor( 1.0f, 1.0f, 1.0f, 1.0f ); glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT ); glBegin( GL_POINTS );

问题 I am trying to create a 3D sphere out of a bunch of triangles with Haskell / GLUT. It works quite nicely: The green one is "my" sphere, the red one is done with GLUT's renderObject Sphere'. And I can see "my" sphere is really 3D when I move the camera around, so that's fine. So why does the GLUT one has nice lighting, and mine has not? (I'm a newbie and do not really know what I'm doing below in initGL, copied that stuff from Hackage's cuboid package...) Here's the code: module Main where

问题 In my simple OpenGL program I get the following error about exit redefinition: 1>c:\program files\microsoft visual studio 8\vc\include\stdlib.h(406) : error C2381: 'exit' : redefinition; __declspec(noreturn) differs 1> c:\program files\microsoft visual studio 8\vc\platformsdk\include\gl\glut.h(146) : see declaration of 'exit' I'm using Nate Robins' GLUT for Win32 and get this error with Visual Studio 2005 or Visual C++ 2005 (Express Edition). What is the cause of this error and how do I fix

问题 I am running Anaconda Python 2.7 on a Win7 x64 machine and used pip install PyOpenGL PyOpenGL_accelerate at the Anaconda command line to install PyOpenGL. I have some code (not my own I must confess) that makes use of glutInit import sys import math import numpy import OpenGL from OpenGL.GL import * from OpenGL.GLUT import * import Image import linkage # ... a whole load of definitions etc ... glutInit(sys.argv) glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB) glutInitWindowSize(600, 600)

问题 I want to use the mouse scrollwheel in my OpenGL GLUT program to zoom in and out of a scene? How do I do that? 回答1: Freeglut's glutMouseWheelFunc callback is version dependant and not reliable in X. Use standard mouse function and test for buttons 3 and 4. The OpenGlut notes on glutMouseWheelFunc state: Due to lack of information about the mouse, it is impossible to implement this correctly on X at this time. Use of this function limits the portability of your application. (This feature does

问题 I want to use the mouse scrollwheel in my OpenGL GLUT program to zoom in and out of a scene? How do I do that? 回答1: Freeglut's glutMouseWheelFunc callback is version dependant and not reliable in X. Use standard mouse function and test for buttons 3 and 4. The OpenGlut notes on glutMouseWheelFunc state: Due to lack of information about the mouse, it is impossible to implement this correctly on X at this time. Use of this function limits the portability of your application. (This feature does

问题 I have a small visualization framework written in c++ and want to use Qt to have a proper GUI and control over my visualizations to interact with them. currently, I am using GLUT to create a window and draw a view in it. so everything I do is initialize an object of the class Visualization which does everything for me: holding model and views. the view itself holds a controller to process user input and manipulate the model. my main loop looks like this: Visualization* vis = new Visualization

问题 I can't work out why this code is seg faulting: AxesMarker::AxesMarker(float size) : size_(size), vbo_vertices_(0), vbo_elements_(0) { Vertex vertices[6] = { Vertex(Color4f::RED, Vector3f::ZERO, Vector3f::ZERO), Vertex(Color4f::RED, Vector3f::ZERO, Vector3f(size_, 0.0f, 0.0f)), Vertex(Color4f::BLUE, Vector3f::ZERO, Vector3f::ZERO), Vertex(Color4f::BLUE, Vector3f::ZERO, Vector3f(0.0f, size_, 0.0f)), Vertex(Color4f::GREEN, Vector3f::ZERO, Vector3f::ZERO), Vertex(Color4f::GREEN, Vector3f::ZERO,