void
SWFGradientMatrix_update(SWFMatrix matrix, SWFRect bounds)
{
int w, h;
float scaleX, scaleY;
SWFMatrix tmp;
if(bounds == NULL)
return;
w = SWFRect_getWidth(bounds);
h = SWFRect_getHeight(bounds);
scaleX = w / GRADIENT_SIZE;
scaleY = h / GRADIENT_SIZE;
/* update matrix translation first, to be realtive to the gradient's
* coordinate system. */
SWFMatrix_moveTo(matrix, SWFMatrix_getTranslateX(matrix) / scaleX,
SWFMatrix_getTranslateY(matrix) / scaleY);
tmp = newSWFMatrix(scaleX, 0, 0, scaleY, bounds->minX + w/2, bounds->minY + h/2);
/* temporary matrix scales gradient to given bounds and centers it. */
/* all transformations done by the user are "applied" on the tmp matrix */
/* matrix = matrix * tmp -> "matrix is followed by tmp" */
SWFMatrix_multiply(matrix, tmp);
destroySWFMatrix(tmp);
}
int
SWFCharacter_getScaledHeight(SWFCharacter character)
{
return SWFRect_getHeight(character->bounds);
}