debian man page for gletwistextrusion

gleTwistExtrusion(3GLE) 						GLE						   gleTwistExtrusion(3GLE)

NAME
       gleTwistExtrusion - Extrude arbitrary 2D contour along arbitrary 3D path, specifying local rotations (twists).

SYNTAX
       void gleTwistExtrusion (int ncp,
		       gleDouble contour[][2],
		       gleDouble cont_normal[][2],
		       gleDouble up[3],
		       int npoints,
		       gleDouble point_array[][3],
		       float color_array[][3],
		       gleDouble twist_array[]);

ARGUMENTS
       ncp	 number of contour points

       contour	 2D contour

       cont_normal
		 2D contour normals

       up	 up vector for contour

       npoints	 numpoints in poly-line

       point_array
		 polyline vertices

       color_array
		 colors at polyline verts

       twist_array
		 contour twists (in degrees)

DESCRIPTION
       Extrude	arbitrary  2D contour along arbitrary 3D path, specifying local rotations (twists). As the contour is extruded, it will be twisted
       by the amount specified in the array "twist_array". The angles are measured in degrees, and the rotation is about the origin of the contour
       coordinate system.

       The argument "contour" specifies the 2D contour to be extruded, while the argument "point_array" specifies the path along which to extrude.
       The vector "up" defines the orientation of the contour y-axis in real 3D space.

       Note that neither the very first segment, nor the very last segment are drawn. The first and last segments serve only to define	the  angle
       of the join at the very ends of the polyline. Thus, to draw one segment, three must be specified. To draw two segments, four must be speci-
       fied, etc.

       The normal array may be NULL. If it is, normal vectors will NOT be automatically generated, and the object will look terrible when lit.

       The color array may be NULL. If NULL, the current color is used. If not NULL, the glColor3f() routine is used to set the color;	therefore,
       specifying the glColorMaterial() subroutine before this primitive can be used to set diffuse, specular, ambient, etc. colors.

SEE ALSO
       gleExtrusion, gleSuperExtrusion

AUTHOR
       Linas Vepstas (linas@linas.org)

GLE
									3.0						   gleTwistExtrusion(3GLE)