<![CDATA[#include <GL\glut.h>
GLfloat xRotated, yRotated, zRotated;
GLdouble radius=0.5;
GLfloat qaBlack[] = {0.5, 0.5, 0.5, 1.0};
//Black Color
GLfloat qaGreen[] = {1.0, 1.0, 0.0, 1.0}; //Green
Color
GLfloat qaWhite[] = {1.0, 1.0, 1.0, 1.0}; //White Color
GLfloat qaRed[] = {1.0, 0.0, 0.0, 1.0};
//Red Color
// Set lighting intensity and color
GLfloat qaAmbientLight[] = {0.2, 0.2, 0.2, 1.0};
GLfloat qaDiffuseLight[] = {0.8, 0.8, 0.8, 1.0};
GLfloat qaSpecularLight[] = {1.0, 1.0, 1.0, 1.0};
// Light source position
GLfloat qaLightPosition[] = {1.0, 2.5, -3.5, 0.5};
void display(void);
void reshape(int x, int y);
void idleFunc(void)
{
zRotated += 0.02;
display();
}
void initLighting()
{
// Enable lighting
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0); // Set lighting intensity and color
glLightfv(GL_LIGHT0, GL_AMBIENT, qaAmbientLight);
glLightfv(GL_LIGHT0, GL_DIFFUSE, qaDiffuseLight);
glLightfv(GL_LIGHT0, GL_SPECULAR, qaSpecularLight); // Set the light position
glLightfv(GL_LIGHT0, GL_POSITION, qaLightPosition);
}
int main (int argc, char **argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH );
glutInitWindowSize(350,350);
glutCreateWindow("Solid Sphere");
initLighting();
xRotated = yRotated = zRotated = 0.0;
glutIdleFunc(idleFunc);
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutMainLoop();
return 0;
}
void display(void)
{ glMatrixMode(GL_MODELVIEW); // clear the drawing buffer.
glClear(GL_COLOR_BUFFER_BIT); // clear the identity matrix.
glLoadIdentity(); // traslate the draw by z = -4.0 // Note this when you decrease z like -8.0 the drawing will looks far , or smaller.
glTranslatef(0.0,0.0,-5.0); // scaling transfomation
glScalef(1.0,1.0,1.0);
glRotatef(zRotated,0.0,0.0,1.0); // Set material properties
glMaterialfv(GL_FRONT_AND_BACK, GL_AMBIENT, qaGreen);
glMaterialfv(GL_FRONT_AND_BACK, GL_DIFFUSE, qaGreen);
glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, qaWhite);
glMaterialf(GL_FRONT_AND_BACK, GL_SHININESS, 20); // built-in (glut library) function , draw you a sphere.
glutSolidSphere(radius,25,25); // Flush buffers to screen
glFlush();
glutSwapBuffers(); // sawp buffers called because we are using double buffering //
glutSwapBuffers();
}
void reshape(int x, int y)
{
if (y == 0 || x == 0)
return;
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(39.0,(GLdouble)x/(GLdouble)y,0.6,21.0);
glMatrixMode(GL_MODELVIEW);
glViewport(0,0,x,y); //Use the whole window for rendering
}]]>
