Moving a texture layer around a plane

[Jez C]

Hi

I've got 2 textures on a plane,
1) the base texture repeated all over the plane,
2) a bitmap with a circular alpha channel

i want to be able to move the circle around the plane:

so this all works fine generating the circle:

member("Scene2").shader("planeShader").TEXTURELIST[2] =
MEMBER("SCENE2").texture("Circle1Texture")
member("Scene2").shader("planeShader").blendFuncti onList[2] = #blend
member("Scene2").shader("planeShader").blendSource List[2] = #alpha
member("Scene2").shader("planeShader").textureRepe atlIST[2] = FALSE
member("Scene2").shader("planeShader").textureTran sformList[2].scale =
vector(0.6, 0.6, 1)
member("Scene2").shader("planeShader").TextureTran sformList[2].position =
vector( 0.00, 0.00, 0.00 )

but when i try to move it using the same line with any numbers in it
member("Scene2").shader("planeShader").TextureTran sformList[2].position =
vector( 50.00, 50.00, 0.00 )

the circle just disappears off the whole plane?

The plane is 2000x2000 so a movement of 50 shouldn't move it off the plane.
(I've tried a whole range of numbers from 1 to 1000)

any ideas anyone? - can anyone see why this isn't working?

cheers
Jez.

[necromanthus]

[q]Originally posted by: Jez C
but when i try to move it using the same line with any numbers in it
member("Scene2").shader("planeShader").TextureTran sformList[2].position =
vector( 50.00, 50.00, 0.00 )
the circle just disappears off the whole plane?
The plane is 2000x2000 so a movement of 50 shouldn't move it off the plane.
(I've tried a whole range of numbers from 1 to 1000)[/q]

The translation vector has to be between vector(0,0,0) and
vector(1,1,0).
So ... in your case:
member("Scene2").shader("planeShader").TextureTran sformList[2].position =
vector( 50.0000/2000, 50.0000/2000, 0.00 )
That's all.

[Jez C]

many thanks necromanthus,

that sorted it.