VECROTZ: Transformation matrix for a rotation around the z axis.
Calling Sequence:
rz = vecrotz(angle);
Parameters:
angle : rotation angle defined in radians
rz : (4x4) Transformation matrix.
Description:
Return the (4x4) Transformation matrix for a rotation about the z axis
by the defined angle.
The matrix is:
[ cos(angle) -sin(angle) 0 0]
[ -sin(angle) cos(angle) 0 0]
[ 0 0 1 0]
[ 0 0 0 1]
Examples:
Rotate the NURBS line (0.0 0.0 0.0) - (3.0 3.0 3.0) by 45 degrees
around the z-axis
line = nrbline([0.0 0.0 0.0],[3.0 3.0 3.0]);
trans = vecrotz(%pi/4);
rline = nrbtform(line, trans);
See:
nrbtform