Using Programming Languages other than VBA

Sub Example_TransformBy()
	' This example creates a line and rotates it 90 degrees
	' using a transformation matrix.

	' Create a line
	Dim lineObj As AcadLine
	Dim startPt(0 To 2) As Double
	Dim endPt(0 To 2) As Double
	startPt(0) = 2: startPt(1) = 1: startPt(2) = 0
	endPt(0) = 5: endPt(1) = 1: endPt(2) = 0
	Set lineObj = ThisDrawing.ModelSpace.AddLine(startPt, endPt)
	lineObj.Update

	' Initialize the transMat variable with a transformation matrix
	' that will rotate an object by 90 degrees about the point(0,0,0)
	' (More examples of transformation matrices are listed below)
	Dim transMat(0 To 3, 0 To 3) As Double
	transMat(0, 0) = 0#: transMat(0, 1) = -1#: transMat(0, 2) = 0#: transMat(0, 3) = 0#
	transMat(1, 0) = 1#: transMat(1, 1) = 0#: transMat(1, 2) = 0#: transMat(1, 3) = 0#
	transMat(2, 0) = 0#: transMat(2, 1) = 0#: transMat(2, 2) = 1#: transMat(2, 3) = 0#
	transMat(3, 0) = 0#: transMat(3, 1) = 0#: transMat(3, 2) = 0#: transMat(3, 3) = 1#

	' Transform the line using the defined transformation matrix
	MsgBox "Transform the line.", , "TransformBy Example"
	lineObj.TransformBy (transMat)
	ZoomAll
	MsgBox "The line is transformed.", , "TransformBy Example"

' More examples of transformation matrices:

' Rotation Matrix: 90 Degrees about point 0,0,0
		' 0.000000  -1.000000  0.000000  0.000000
		' 1.000000  0.000000  0.000000  0.000000
		' 0.000000  0.000000  1.000000  0.000000
		' 0.000000  0.000000  0.000000  1.000000
	

' Rotation Matrix: 45 Degrees about point 5,5,0
		' 0.70710678118654  -0.70710678118654  0.000000  5.000000
		' 0.70710678118654  0.70710678118654  0.000000  -2.071068
		' 0.000000  0.000000  1.000000  0.000000
		' 0.000000  0.000000  0.000000  1.000000
	

' Translation Matrix: move an object by 10,10,0
		' 1.000000  0.000000  0.000000  10.000000
		' 0.000000  1.000000  0.000000  10.000000
		' 0.000000  0.000000  1.000000  0.000000
		' 0.000000  0.000000  0.000000  1.000000

' Scaling Matrix: scale by 10,10 at point 0,0,0
		' 10.000000  0.000000  0.000000  0.000000
		' 0.000000  10.000000  0.000000  0.000000
		' 0.000000  0.000000  10.000000  0.000000
		' 0.000000  0.000000  0.000000  1.000000
	

' Scaling Matrix: scale by 10 at point 2,2
		' 10.000000  0.000000  0.000000  -18.000000
		' 0.000000  10.000000  0.000000  -18.000000
		' 0.000000  0.000000  10.000000  0.000000
		' 0.000000  0.000000  0.000000  1.000000
End Sub