rotate sphere in a circle with light

Mon Mar 05, 2012 10:07 pm

In this example we rotate 3D sphere with light in a circle shape like solar system.

Code:: #include <GL\glut.h> #include <math.h> // For math routines (such as sqrt & trig). GLfloat xRotated, yRotated, zRotated; GLdouble radius=2; GLfloat qaBlack[] = {0.0, 0.0, 0.0, 1.0}; //Black Color GLfloat qaGreen[] = {0.0, 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}; //White Color // Set lighting intensity and color GLfloat qaAmbientLight[] = {0.1, 0.1, 0.1, 1.0}; GLfloat qaDiffuseLight[] = {1, 1, 1, 1.0}; GLfloat qaSpecularLight[] = {1.0, 1.0, 1.0, 1.0}; GLfloat emitLight[] = {0.9, 0.9, 0.9, 0.01}; GLfloat Noemit[] = {0.0, 0.0, 0.0, 1.0}; // Light source position GLfloat qaLightPosition[] = {0, 0, 0, 1}; void display(void); void reshape(int x, int y); void idleFunc(void) { if ( zRotated > 360.0 ) { zRotated -= 360.0*floor(zRotated/360.0); // Don't allow overflow } if ( yRotated > 360.0 ) { yRotated -= 360.0*floor(yRotated/360.0); // Don't allow overflow } zRotated += 0.01; yRotated +=0.01; 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); } 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(); glTranslatef(0.0,0.0,-20.0); // glPushMatrix(); glTranslatef(0.0,0.0,0); // 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, 0.2); glutSolidSphere(radius,25,25); glPopMatrix(); glPushMatrix(); glRotatef(yRotated,0.0,1.0,0.0); glTranslatef(5.0,0.0,0.0); // Set the light position glLightfv(GL_LIGHT0, GL_POSITION, qaLightPosition); glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, emitLight); // Make sphere glow (emissive) glutSolidSphere(radius/6,25,25); glMaterialfv(GL_FRONT_AND_BACK, GL_EMISSION, Noemit); glPopMatrix(); glFlush(); glutSwapBuffers(); } void reshape(int x, int y) { if (y == 0 || x == 0) return; glMatrixMode(GL_PROJECTION); glLoadIdentity(); gluPerspective(39.0,(GLdouble)x/(GLdouble)y,0.6,40.0); glMatrixMode(GL_MODELVIEW); glViewport(0,0,x,y); //Use the whole window for rendering }

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: rotate_In_Circle.png (9.46 KiB) Viewed 14998 times

rotate sphere in a circle with light

rotate sphere in a circle with light

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