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Function

• void SWF!DisplayItem_setMatrix(SWF!DisplayItem item, float a, float b, float c, float d, float x, float y);

Purpose

• Sets the SWFMatrix structure associated with a display item.

Parameters

1. SWF!DisplayItem item - The SWF Display Item to have its matrix set

2. float a - The new matrix scaleX value to set

3. float b - The new matrix rotate0 value to set

4. float c - The new matrix rotate1 value to set

5. float d - The new matrix scaleY value to set

6. float x - The new matrix translateX value to set

7. float y - The new matrix translateY value to set

Returns

• void - No return value

Language

• C

Ming version

• (unknown). At least 0.3.0 and onwards, possibly earlier versions as well.

Notes

• This function sets all members of the SWF!DisplayItem matrix structure.

• It looks like the swf specs are not clear about matrix, it has been mentioned (not verified yet though!) that if the matrix is set with the scale values to 0 and rotation not 0 or 180 degree the player doesn't work like expected.
  • As workaround you can set the scaling to a value little more than 0.

• The rotate0 field expects -sin(<angle>), the rotate1 field sin(<angle>) parameters.

Example

• None as yet