Material Texture Set Out Point

[Anonymous]

Hi,
I have a whole bunch of materials created that have textures associated with them.
Now I want to use these materials in a library part, however I cannot work out how to set out the start point for the material. It seems to relate to the global co-ordinates as when I move the object, the texture position changes in relation to that object.
Can't work it out PLEASE HELP

[Anonymous]

You have to set the local origin of the texture internally in the GDL.

As I recall it is the COOR function. I also recall that it's a bit tricky but not bad if you are good at GDL.

[Anonymous]

Thanks Matthew,
I got the coor and vert commands to work, but it didnt really make sense. But it worked, so that's good. Thanks
Tom

[David Maudlin]

For anyone with the same issue, here is the code to set the texture origin, which is placed after the 3D command:

Base
Vert 0, 0, 0
Vert 1, 0, 0
Vert 0, 1, 0
Vert 0, 0, 1
Coor 2+256, -1, -2, -3, -4
Body -1

David

[Anonymous]

David,
How do you move the texture then in this command?
Say I wanted to move the texture slightly to the right
Or does this relate to the 3D object?

[David Maudlin]

Tom:

To move the texture origin, add a transformation after the 3D model command but before the texture origin code (then delete this transformation after the texture origin code). For example:
_____________________________

Block A, B, ZZYZX

Add x1, y1, z1

Base
Vert 0, 0, 0
Vert 1, 0, 0
Vert 0, 1, 0
Vert 0, 0, 1
Coor 2+256, -1, -2, -3, -4
Body -1

Del 1
_____________________________

David

[rocorona]

For an interactive texture placing, try the following routine, but I find it is not so practical, unless you have many instances, each one with a different setting.
You have to define 3 new parameters (cx, cy, cz) in your object.

hid=0 
HOTSPOT 00, cy, cz, hid+1, cx, 129 
HOTSPOT cx, cy, cz, hid+2, cx, 2 
HOTSPOT -1, cy, cz, hid+3, cx, 3 
 
hid=hid+10 
HOTSPOT cx, 00, cz, hid+1, cy, 129 
HOTSPOT cx, cy, cz, hid+2, cy, 2 
HOTSPOT cx, -1, cz, hid+3, cy, 3 
 
hid=hid+10 
HOTSPOT cx, cy, 00, hid+1, cz, 129 
HOTSPOT cx, cy, cz, hid+2, cz, 2 
HOTSPOT cx, cy, -1, hid+3, cz, 3 
 
BASE  
VERT cx,  cy,  cz  
VERT cx+1, cy, cz  
VERT cx, cy+1, cz  
VERT cx, cy, cz+1  
 
COOR 2+256, -1, -2, -3, -4  
BODY -1