This example demonstrates the creation of a circle (CR2) by transforming CR1 using a rotation matrix in the XY principal plane.
$$
$$ Declarations
$$
ENTITY/CR1,CR2
NUMBER/MAT1(12)
$$
$$ Geometry Definition
$$
CR1 =CIRCLE/1,-.5,.5
$$
$$ Matrix Definition
$$
MAT1=MATRIX/XYROT,45
$$
$$ Transformation
$$
CR2 =TRANSF/MAT1,CR1
Rotation Matrix