Vector SphericalCamera::screenToWorld(const Vector &ssP, const PTime time) const
{
SphericalCoords sc;
sc.longitude = ssP.x * M_PI;
sc.latitude = ssP.y * (M_PI * 0.5);
sc.radius = ssP.z;
Vector csP = sphereToCart(sc);
return cameraToWorld(csP, time);
}
void display( ) {
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
/* Fixed light Pos */
GLfloat position[] = {15*sin(0.5*seconds), 0 , 15*cos(0.5*seconds)};
glLightfv(GL_LIGHT0, GL_POSITION, position);
/* Set up gluLookAt */
double eyex, eyey, eyez;
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
sphereToCart(eyeTheta, eyePhi, eyeRho, &eyex, &eyey, &eyez);
gluLookAt(eyex, eyey, eyez, 0,0,0, 0,0,1);
drawTube();
glutSwapBuffers();
}
