TopicGraph::TopicGraph(QObject *parent)
:GraphBase(parent)
{
ConstructScene();
}
/**
* Main
*/
int main(int argc, char** argv)
{
// Set up depth buffer and double buffering
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH);
glutInitWindowPosition(100, 100);
glutInitWindowSize(640, 480);
glutInit(&argc, argv);
// Set callback methods
glutCreateWindow("Phong Shading / Shaders Example");
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutMouseFunc(mouse);
glutMotionFunc(mouseMotion);
glutKeyboardFunc(keyboard);
// Set the clear color to black
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
// Smooth shading by default
glShadeModel(GL_SMOOTH);
// Enable the depth buffer
glEnable(GL_DEPTH_TEST);
// Enable normalization of vectors (so we can do scaling!)
glEnable(GL_NORMALIZE);
// Enable back face polygon removal
glFrontFace(GL_CCW);
glCullFace(GL_BACK);
glEnable(GL_CULL_FACE);
// Set ambient light in the lighting model and enable lighting
GLfloat ambient[] = { 0.4f, 0.4f, 0.4f, 1.0f };
glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambient);
glEnable(GL_LIGHTING);
//Enable 2D Textures
glEnable( GL_TEXTURE_2D );
// Print the keyboard commands
printf("i - Reset to initial view\n");
printf("R - Rotate roll 5 degrees clockwise\n");
printf("r - Rotate roll 5 degrees counter-clockwise\n");
printf("P - Rotate pitch 5 degrees clockwise\n");
printf("p - Rotate pitch 5 degrees counter-clockwise\n");
printf("H - Rotate heading 5 degrees clockwise\n");
printf("h - Rotate heading 5 degrees counter-clockwise\n");
printf("V - Faster mouse movement\n");
printf("v - slower mouse movement\n");
printf("g - Gouraud shading\n");
printf("f - Flat shading\n");
printf("S - Use Shaders (default)\n");
printf("s - Use fixed function pipeline\n");
printf("t - Toggle water flow\n");
CanUseShaders = true;
glewInit();
if (glewIsSupported("GL_VERSION_2_0"))
printf("Can use GLSL as part of OpenGL 2.0\n");
else
{
printf("OpenGL 2.0 not supported - see if we can use extensions\n");
if (GLEW_ARB_vertex_shader && GLEW_ARB_fragment_shader)
printf("Can use GLSL with extensions\n");
else
{
CanUseShaders = false;
printf("Cannot use GLSL!\n");
}
}
// Set up shaders
if (CanUseShaders)
{
if (!VertexShader.Create("shaders/phong.vert"))
{
printf("Vertex Shader compile failed\n");
exit(1);
}
if (!FragmentShader.Create("shaders/phong.frag"))
{
printf("Fragment Shader compile failed\n");
exit(1);
}
ShaderProgram.Create();
if (!ShaderProgram.AttachShaders(VertexShader.Get(), FragmentShader.Get()))
{
printf("Shader program link failed\n");
exit(1);
}
ShaderProgram.Use();
}
// Construct scene
ConstructScene();
//gluLookAt(0, 1, 3, 0, 1, 0, 0, 1, 0);
// Set the number of lights used
int nl = glGetUniformLocation(ShaderProgram.GetProgram(), "numLights");
glUniform1i(nl, 5);
//glutIdleFunc(idle);
glutTimerFunc(1000.0 / FRAME_RATE, timerFunction, 0);
glutMainLoop();
return 0;
}
/**
* Main
*/
int main(int argc, char** argv)
{
// Print the keyboard commands
printf("i - Reset to initial view\n");
printf("R - Roll 5 degrees clockwise r - Counter-clockwise\n");
printf("P - Pitch 5 degrees clockwise p - Counter-clockwise\n");
printf("H - Heading 5 degrees clockwise h - Counter-clockwise\n");
printf("X - Slide camera right x - Slide camera left\n");
printf("Y - Slide camera up y - Slide camera down\n");
printf("F - Move camera forward f - Move camera backwards\n");
printf("V - Faster mouse movement v - Slower mouse movement\n");
// Initialize free GLUT
glutInit(&argc, argv);
glutInitContextVersion(3, 2);
//glutInitContextFlags(GLUT_FORWARD_COMPATIBLE); // Using this causes LineWidth to error
glutInitContextProfile(GLUT_CORE_PROFILE);
// Set up depth buffer and double buffering
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH | GLUT_MULTISAMPLE);
glutInitWindowPosition(100, 100);
glutInitWindowSize(640, 480);
// Set callback methods
glutCreateWindow("Phong Shading");
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutMouseFunc(mouse);
glutMotionFunc(mouseMotion);
glutKeyboardFunc(keyboard);
// Initialize Open 3.2 core profile
if (gl3wInit()) {
fprintf(stderr, "gl3wInit: failed to initialize OpenGL\n");
return -1;
}
if (!gl3wIsSupported(3, 2)) {
fprintf(stderr, "OpenGL 3.2 not supported\n");
return -1;
}
printf("OpenGL %s, GLSL %s\n", glGetString(GL_VERSION), glGetString(GL_SHADING_LANGUAGE_VERSION));
// Set the clear color to black
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
// Enable the depth buffer
glEnable(GL_DEPTH_TEST);
// Enable back face polygon removal
glFrontFace(GL_CCW);
glCullFace(GL_BACK);
glEnable(GL_CULL_FACE);
// Enable mutlisample anti-aliasing
glEnable(GL_MULTISAMPLE);
// Construct scene
ConstructScene();
glutMainLoop();
return 0;
}