Hi, all.
I need to move an object (a sphere), but i'm trying to change the 
patt_trans value and it is not working. While i'm pressing the keyboard 
button, the sphere moves, but when I release it, the sphere "go back" to 
the marker. What can I do to make my sphere move and stay on the position?

Thank you,
Fernando.

hi Fernando,

I doubt anybody will be able to really help you with that problem
description.
What kind of program is that you are talking about?
Is it a sample?
A modified sample?
Your own code?

>From what you are writing I guess you are talking about custom code you
wrote. It seems that you update (overwrite) the patt_trans value as long
as you hold down that key. Since patt_trans is updated every frame your
object will jump back as soon as you release the key and don't overwrite
patt_trans anymore. To make the sphere stay where it is you would have
to add the offset (initialized with <0 0 0> every frame (independent of
key strokes) and only modify that offset with the keys.

This is quite trivial to do but maybe I completely misunderstood your
problem...

bye,
Daniel

Hi Fernando,

Try using the functions glTranslatef() and glRotatef(). Apply them just before the arVrmlDraw() call in the Display function. This probably works for non vrml examples too, although i didn't test.

Abraço,
Bruno.

-------- Original-Nachricht --------
Datum: Fri, 26 Jan 2007 16:23:54 -0300
Von: Fernando Giovanini <giovanini@u ............>
An: ARToolkit <artoolkit@h ..................>
Betreff: Moving an object

> Hi, all.
> I need to move an object (a sphere), but i'm trying to change the 
> patt_trans value and it is not working. While i'm pressing the keyboard 
> button, the sphere moves, but when I release it, the sphere "go back" to 
> the marker. What can I do to make my sphere move and stay on the position?
> 
> Thank you,
> Fernando.

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