AUTOMAP
THE BOX'S MAIN HELP:
This function uses the normal to the surface to do a planar projection. The projection is performed with (UU,VV) equal to (0,0) at the point O. UU runs along the vector specified by Y and VV runs along the vector perpendicular to both Y and the normal to the surface. For surfaces which are perpendicular to Y, a reasonable guess at "up" is attempted. N.B.: this only works well on faceted surfaces (polygonal or bilinear).
PP (input):
This is the point on surface to be projected. The default is P.
O (input):
This point represents the origin of the plane. This must be a point. The default is point(0,0,0).
Y (input):
This point represents the Yaxis of the plane. This must be a point. The default is point(0,1,0).
N (input):
This point is the surface normal of the surface to be projected. This must be a point. The default is N.
UU (output):
This a return value, the "horizontal" mapping coordinate. This function uses the normal to the surface to do a planar projection. The projection is performed with (UU,VV) equal to (0,0) at the point O. UU runs along the vector specified by Y and VV runs along the vector perpendicular to both Y and the normal to the surface. For surfaces which are perpendicular to Y, a reasonable guess at "up" is attempted. N.B.: this only works well on faceted surfaces (polygonal or bilinear).
VV (output):
This a return value, the "vertical" mapping coordinate. This function uses the normal to the surface to do a planar projection. The projection is performed with (UU,VV) equal to (0,0) at the point O. UU runs along the vector specified by Y and VV runs along the vector perpendicular to both Y and the normal to the surface. For surfaces which are perpendicular to Y, a reasonable guess at "up" is attempted. N.B.: this only works well on faceted surfaces (polygonal or bilinear).