2.2.28 XForm Object

The XForm object defines a two-dimensional, linear transform matrix.

0	1	2	3	4	5	6	7	8	9	1 0	1	2	3	4	5	6	7	8	9	2 0	1	2	3	4	5	6	7	8	9	3 0	1
M11
M12
M21
M22
Dx
Dy

M11 (4 bytes): A FLOAT matrix value.

M12 (4 bytes): A FLOAT matrix value.

M21 (4 bytes): A FLOAT matrix value.

M22 (4 bytes): A FLOAT matrix value.

Dx (4 bytes): A FLOAT value that contains a horizontal translation component, in logical units.

Dy (4 bytes): A FLOAT value that contains a vertical translation component, in logical units.

The following equations specify how the matrix values are used to transform a point (X,Y) to a new point (X',Y'):

 X' = M11 * X + M21 * Y + Dx
 Y' = M12 * X + M22 * Y + Dy

For more information concerning transforms and coordinate spaces, see [MSDN-WRLDPGSPC].