public static float getScaleY(uiMatrix3 matrix)
{
// ignore perspective parameters for now.
if (matrix.isIdentity())
{
return(1.0f);
}
if (matrix.getSkewX() == 0)
{
return(matrix.getScaleY());
}
var x = matrix.getSkewX();
var y = matrix.getScaleY();
return(Mathf.Sqrt(x * x + y * y));
}
static void Scale_pts(uiMatrix3 m, uiOffset[] dst, uiOffset[] src, int count)
{
D.assert(m._getType() <= (TypeMask.kScale_Mask | TypeMask.kTranslate_Mask));
if (count > 0)
{
var tx = m.getTranslateX();
var ty = m.getTranslateY();
var sx = m.getScaleX();
var sy = m.getScaleY();
for (int i = 0; i < count; ++i)
{
dst[i] = new uiOffset(src[i].dx * sx + tx, src[i].dy * sy + ty);
}
}
}
static void Affine_pts(uiMatrix3 m, uiOffset[] dst, uiOffset[] src, int count)
{
D.assert(m._getType() != TypeMask.kPerspective_Mask);
if (count > 0)
{
var tx = m.getTranslateX();
var ty = m.getTranslateY();
var sx = m.getScaleX();
var sy = m.getScaleY();
var kx = m.getSkewX();
var ky = m.getSkewY();
for (int i = 0; i < count; ++i)
{
dst[i] = new uiOffset(
src[i].dx * sx + src[i].dy * kx + tx,
src[i].dx * ky + src[i].dy * sy + ty);
}
}
}