-/* tube, Copyright (c) 2001, 2003 Jamie Zawinski <jwz@jwz.org>
+/* tube, Copyright (c) 2001, 2003, 2007 Jamie Zawinski <jwz@jwz.org>
* Utility functions to create tubes and cones in GL.
*
* Permission to use, copy, modify, distribute, and sell this software and its
#ifndef __TUBE_H__
#define __TUBE_H__
-extern void tube (GLfloat x1, GLfloat y1, GLfloat z1,
- GLfloat x2, GLfloat y2, GLfloat z2,
- GLfloat diameter, GLfloat cap_size,
- int faces, int smooth, int caps_p, int wire_p);
+/* Renders a tube along the line described by the two points.
+ Returns the number of polygons used.
+ */
+extern int tube (GLfloat x1, GLfloat y1, GLfloat z1,
+ GLfloat x2, GLfloat y2, GLfloat z2,
+ GLfloat diameter, GLfloat cap_size,
+ int faces, int smooth, int caps_p, int wire_p);
-extern void cone (GLfloat x1, GLfloat y1, GLfloat z1,
- GLfloat x2, GLfloat y2, GLfloat z2,
- GLfloat diameter, GLfloat cap_size,
- int faces, int smooth, int cap_p, int wire_p);
+/* Renders a cone along the line described by the two points.
+ Returns the number of polygons used.
+ */
+extern int cone (GLfloat x1, GLfloat y1, GLfloat z1,
+ GLfloat x2, GLfloat y2, GLfloat z2,
+ GLfloat diameter, GLfloat cap_size,
+ int faces, int smooth, int cap_p, int wire_p);
#endif /* __TUBE_H__ */