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gleExtrusion(3GLE)		      GLE		    gleExtrusion(3GLE)

NAME
       gleExtrusion - Extrude arbitrary	2D contour along arbitrary 3D path.

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

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

DESCRIPTION
       Extrude	arbitrary  2D  contour	along  arbitrary 3D path. 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 specified,
       etc.

       The normal array	may be NULL. If	it is, normal vectors will NOT be  au-
       tomatically 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
       gleTwistExtrusion, gleSuperExtrusion

AUTHOR
       Linas Vepstas (linas@fc.net)

GLE				      3.6		    gleExtrusion(3GLE)

NAME | SYNTAX | ARGUMENTS | DESCRIPTION | SEE ALSO | AUTHOR

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