Rendering map transforms are very messy

[TheJosh]

I don't understand the code at all. Take a look in RenderOpenGL::mainRot() to see what I mean.

Here is a sample (trimmed a little):

this->render_player->drive->body->getMotionState()->getWorldTransform(trans);
btVector3 euler;
PhysicsBullet::QuaternionToEulerXYZ(trans.getRotation(), euler);

glLoadIdentity();
glTranslatef(this->virt_width / 2, this->virt_height / 2, 0);

// Behind (3rd person)
glRotatef(180, 0, 0, 1);
glTranslatef(0,483,1095);
glRotatef(74, 1, 0, 0);

glRotatef(RAD_TO_DEG(-euler.z()), 0.f, 0.f, 1.f);
glRotatef(180, 0.f, 0.f, 1.f);
glTranslatef(0.f - trans.getOrigin().getX(), 0.f - trans.getOrigin().getY(), 500.f - trans.getOrigin().getZ());

If anyone can make sense of that, be my guest!