Can someone please explain to me the difference between the Vec_rotate command and the new Ang_rotate?

I just don't get it. (Yet.)

Thanks!

- WildCat

Post voluntarily erased by her author
Freiwillig post , von ihrem Autor gelöscht.

I know, this has caused me problems (I must be getting old ), the rule of thumb I use is,
vec_rotate(dir,angle) rotates an "OFFSET" through the pan/tilt/roll of angle.

Example 1:
(Offset from car's centre to front right wheel = x60,y20,z0)
//--------- pseudo code --------
Wheel.x = 60;
Wheel.y = 20;
Wheel.z = 0;

//Cars pan/tilt/roll = 30/15/0
Vec_rotate(Wheel.x,Car.Pan)

This will rotate the right front wheel's offest to the pan/tilt/roll of the car.
The wheel will still need it's pan/tilt/roll matched to the car
vec_set(wheel.pan,car.pan)
& then the wheel will move exactly with the car.
As you can see vec_rotate rotated an offset (or displacement vector).

Now ang_rotate(vector1,vector2) rotates vector1's(pan/tilt/roll) through vector2's (pan/tilt/roll). It's rotating a group of angles by another group of angles. Not like vec_rotate which rotates a position by a group of angles.
(at least this is how I see it )

Curses...

I mis-spoke.

Thanks for the response guys, but I knew that. What I **ment** to ask was whats the difference between ROTATE and ANG_ROTATE!

Thanks!

-WildCat

The only difference was that ROTATE used an entity, instead of an angles vector.

ROTATE was an old-style instruction. It can be completely replaced by ang_rotate, and won't be documented anymore.

Thats what I was looking for. Thanks.