Rendering Dodecahedron, Octahedron, Tetrahedron and Icosahedrons using GLUT in C
GLUT provides functions with no parameters and pre – assigned radii for these Objects. The pre – assigned radii of Dodecahedron, Octahedron, Tetrahedron and Icosahedrons are, respectively, sqrt(3), 1, sqrt(3), 1. The syntax of each object is given below
Source Code
#include <windows.h> #include <GL/glut.h> #include <stdlib.h> static void resize(int width, int height) { const float ar = (float) width / (float) height; glViewport(0, 0, width, height); glMatrixMode(GL_PROJECTION); glLoadIdentity(); glFrustum(-ar, ar, -1.0, 1.0, 2.0, 100.0); glMatrixMode(GL_MODELVIEW); glLoadIdentity() ; } static void display(void) { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glColor3d(1,0,0); //Dodecahedron glPushMatrix(); glTranslated(-3.0, 1.5, -6); glScaled(0.5, 0.5, 0.5); glutSolidDodecahedron(); glPopMatrix(); glPushMatrix(); glTranslated(-3.0, -1.2, -6.0); glScaled(0.5, 0.5, 0.5); glutWireDodecahedron(); glPopMatrix(); //Octahedron glPushMatrix(); glTranslated(-1.0, 1.5, -6); glutSolidOctahedron(); glPopMatrix(); glPushMatrix(); glTranslated(-1.0, -1.2, -6.0); glutWireOctahedron(); glPopMatrix(); //Tetrahedron glPushMatrix(); glTranslated(1.0, 1.5, -6); glutSolidTetrahedron(); glPopMatrix(); glPushMatrix(); glTranslated(1.0, -1.2, -6.0); glutWireTetrahedron(); glPopMatrix(); //Icosahedrons glPushMatrix(); glTranslated(3.0, 1.5, -6); glutSolidIcosahedron(); glPopMatrix(); glPushMatrix(); glTranslated(3.0, -1.2, -6.0); glutWireIcosahedron(); glPopMatrix(); glutSwapBuffers(); } const GLfloat light_ambient[] = { 0.0f, 0.0f, 0.0f, 1.0f }; const GLfloat light_diffuse[] = { 1.0f, 1.0f, 1.0f, 1.0f }; const GLfloat light_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f }; const GLfloat light_position[] = { 2.0f, 5.0f, 5.0f, 0.0f }; const GLfloat mat_ambient[] = { 0.7f, 0.7f, 0.7f, 1.0f }; const GLfloat mat_diffuse[] = { 0.8f, 0.8f, 0.8f, 1.0f }; const GLfloat mat_specular[] = { 1.0f, 1.0f, 1.0f, 1.0f }; const GLfloat high_shininess[] = { 100.0f }; /* Program entry point */ int main(int argc, char *argv[]) { glutInit(&argc, argv); glutInitWindowSize(640,480); glutInitWindowPosition(10,10); glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE | GLUT_DEPTH); glutCreateWindow("Programming Techniques - 3D regular solids"); glutReshapeFunc(resize); glutDisplayFunc(display); glClearColor(1,1,1,1); glEnable(GL_CULL_FACE); glCullFace(GL_BACK); glEnable(GL_DEPTH_TEST); glDepthFunc(GL_LESS); glEnable(GL_LIGHT0); glEnable(GL_NORMALIZE); glEnable(GL_COLOR_MATERIAL); glEnable(GL_LIGHTING); glLightfv(GL_LIGHT0, GL_AMBIENT, light_ambient); glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse); glLightfv(GL_LIGHT0, GL_SPECULAR, light_specular); glLightfv(GL_LIGHT0, GL_POSITION, light_position); glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient); glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse); glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular); glMaterialfv(GL_FRONT, GL_SHININESS, high_shininess); glutMainLoop(); return EXIT_SUCCESS; }
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