Draw a solid sphere using openGL

Sun Feb 19, 2012 8:00 pm

In this example we draw a simple and fixed colored solid sphere using OpenGL and GLU . glutSolidSphere function is used.

Code:: #include <GL\glut.h> GLfloat xRotated, yRotated, zRotated; GLdouble radius=1; void display(void); void reshape(int x, int y); int main (int argc, char **argv) { glutInit(&argc, argv); glutInitWindowSize(350,350); glutCreateWindow("Solid Sphere"); xRotated = yRotated = zRotated = 30.0; xRotated=43; yRotated=50; 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); // Red color used to draw. glColor3f(0.9, 0.3, 0.2); // changing in transformation matrix. // rotation about X axis glRotatef(xRotated,1.0,0.0,0.0); // rotation about Y axis glRotatef(yRotated,0.0,1.0,0.0); // rotation about Z axis glRotatef(zRotated,0.0,0.0,1.0); // scaling transfomation glScalef(1.0,1.0,1.0); // built-in (glut library) function , draw you a sphere. glutSolidSphere(radius,20,20); // Flush buffers to screen glFlush(); // 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 }

Attachments