GLUT SAMPLE CODE FOR XCODE MAC
#include <GLUT/GLUT.h>
#include <stdlib.h>
void
myinit(void)
{
GLfloat light_ambient[] =
{0.0, 0.0, 0.0, 1.0};
GLfloat light_diffuse[] =
{1.0, 0.0, 0.0, 1.0};
GLfloat light_specular[] =
{1.0, 1.0, 1.0, 1.0};
/* light_position is NOT default value */
GLfloat light_position[] =
{1.0, 1.0, 1.0, 0.0};
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);
glEnable(GL_LIGHT0);
glDepthFunc(GL_LESS);
glEnable(GL_DEPTH_TEST);
glEnable(GL_LIGHTING);
}
void
display(void)
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glScalef(1.3, 1.3, 1.3);
glRotatef(20.0, 1.0, 0.0, 0.0);
glPushMatrix();
glTranslatef(-0.75, 0.5, 0.0);
glRotatef(90.0, 1.0, 0.0, 0.0);
glutSolidTorus(0.275, 0.85, 10, 15);
glPopMatrix();
glPushMatrix();
glTranslatef(-0.75, -0.5, 0.0);
glRotatef(270.0, 1.0, 0.0, 0.0);
glutSolidTetrahedron();
glPopMatrix();
glPushMatrix();
glTranslatef(0.75, 0.0, -1.0);
glutSolidIcosahedron();
glPopMatrix();
glPopMatrix();
glFlush();
}
void
myReshape(int w, int h)
{
glViewport(0, 0, w, h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
if (w <= h)
glOrtho(-2.5, 2.5, -2.5 * (GLfloat) h / (GLfloat) w,
2.5 * (GLfloat) h / (GLfloat) w, -10.0, 10.0);
else
glOrtho(-2.5 * (GLfloat) w / (GLfloat) h,
2.5 * (GLfloat) w / (GLfloat) h, -2.5, 2.5, -10.0, 10.0);
glMatrixMode(GL_MODELVIEW);
}
void
polygon_mode(int value)
{
switch (value) {
case 1:
glEnable(GL_DEPTH_TEST);
glEnable(GL_LIGHTING);
glDisable(GL_BLEND);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
break;
case 2:
glDisable(GL_DEPTH_TEST);
glDisable(GL_LIGHTING);
glColor3f(1.0, 1.0, 1.0);
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glEnable(GL_LINE_SMOOTH);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
break;
}
glutPostRedisplay();
}
void
main_menu(int value)
{
if (value == 666)
exit(0);
}
/* Main Loop
* Open window with initial window size, title bar,
* RGBA display mode, and handle input events.
*/
int
main(int argc, char **argv)
{
int submenu;
glutInit(&argc, argv);
glutInitWindowPosition(500, 500);
glutInitWindowSize(500, 500);
glutCreateWindow(argv[0]);
myinit();
glutReshapeFunc(myReshape);
glutDisplayFunc(display);
submenu = glutCreateMenu(polygon_mode);
glutAddMenuEntry("Filled", 1);
glutAddMenuEntry("Outline", 2);
glutCreateMenu(main_menu);
glutAddMenuEntry("Quit", 666);
glutAddSubMenu("Polygon mode", submenu);
glutAttachMenu(GLUT_RIGHT_BUTTON);
glutMainLoop();
return 0;
}
}
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