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// Draw ball
glPushMatrix();
glTranslated((int)newX, (int)newY, 0);
glBegin(GL_TRIANGLE_FAN);
glColor4f(1.0f, 0.0f, 0.0f, 1.0f);
glVertex2f(0.0f, 0.0f);
for(double angle = 0.0f; angle < 360.0f; angle += 45.0f)
    glVertex2f(cos(angle) * [ball radius], sin(angle) * [ball radius]);
glEnd();
glPopMatrix();