WoW:API Texture SetTexCoord: Difference between revisions
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SetTexCoord -Documentation by tcxxs-
(Changed origin from bottom left to top left) |
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== Note == | == Note == | ||
:The function | :The function cuts a sub-region out of the texture to display ingame. | ||
:*Unless you want to do rotations, use the ''(left,right,top,bottom)'' notation. | |||
:*The more complex 8-argument form allows for arbitrary affine transformations, see [[SetTexCoord Transformations]] for details.<BR>Basically the four points you specify still have to form a rectangle, but you can rotate and place it more freely.<BR>Experience with matrices is recommended since they can help you find the final coordinates of your points. | |||
:The example below cuts out the lower left quarter of the texture file. | |||
== Example == | == Example == | ||
getglobal("MyAddOnTexture" .. id):SetTexCoord(0, 0.5, 0.5, 1); | getglobal("MyAddOnTexture" .. id):SetTexCoord(0, 0.5, 0.5, 1); | ||
Revision as of 07:31, 14 September 2007
← Widget API ← Texture < SetTexCoord
Limit the region of a texture drawn by the Texture widget.
obj:SetTexCoord(left,right,top,bottom); obj:SetTexCoord(ULx,ULy,LLx,LLy,URx,URy,LRx,LRy);
Parameters
Arguments
- (left,right,top,bottom)
- Number - 0 -- 1 - actually, not bounded, but 0-1 is the texture's actual area
- (ULx,ULy,LLx,LLy,URx,URy,LRx,LRy);
- Number - 0 -- 1 - actually, not bounded, but 0-1 is the texture's actual area
Note
- The function cuts a sub-region out of the texture to display ingame.
- Unless you want to do rotations, use the (left,right,top,bottom) notation.
- The more complex 8-argument form allows for arbitrary affine transformations, see SetTexCoord Transformations for details.
Basically the four points you specify still have to form a rectangle, but you can rotate and place it more freely.
Experience with matrices is recommended since they can help you find the final coordinates of your points.
- The example below cuts out the lower left quarter of the texture file.
Example
getglobal("MyAddOnTexture" .. id):SetTexCoord(0, 0.5, 0.5, 1);
Details
- Use this function to select a sub-region of a texture for display in a Texture widget. Note that the coordinates are normalised, and that the origin is the top left corner. (Note: Tested in patch 2.0.6, and the origin is in fact in the top left, and not the bottom left as was previously stated)