ReactOS 0.4.15-dev-7924-g5949c20
tessmono.h
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30/*
31** Author: Eric Veach, July 1994.
32**
33*/
34
35#ifndef __tessmono_h_
36#define __tessmono_h_
37
38/* __gl_meshTessellateMonoRegion( face ) tessellates a monotone region
39 * (what else would it do??) The region must consist of a single
40 * loop of half-edges (see mesh.h) oriented CCW. "Monotone" in this
41 * case means that any vertical line intersects the interior of the
42 * region in a single interval.
43 *
44 * Tessellation consists of adding interior edges (actually pairs of
45 * half-edges), to split the region into non-overlapping triangles.
46 *
47 * __gl_meshTessellateInterior( mesh ) tessellates each region of
48 * the mesh which is marked "inside" the polygon. Each such region
49 * must be monotone.
50 *
51 * __gl_meshDiscardExterior( mesh ) zaps (ie. sets to NULL) all faces
52 * which are not marked "inside" the polygon. Since further mesh operations
53 * on NULL faces are not allowed, the main purpose is to clean up the
54 * mesh so that exterior loops are not represented in the data structure.
55 *
56 * __gl_meshSetWindingNumber( mesh, value, keepOnlyBoundary ) resets the
57 * winding numbers on all edges so that regions marked "inside" the
58 * polygon have a winding number of "value", and regions outside
59 * have a winding number of 0.
60 *
61 * If keepOnlyBoundary is TRUE, it also deletes all edges which do not
62 * separate an interior region from an exterior one.
63 */
64
69 GLboolean keepOnlyBoundary );
70
71#endif
unsigned char GLboolean
Definition: gl.h:151
GLenum GLuint GLint GLenum face
Definition: glext.h:7025
Definition: mesh.h:126
Definition: mesh.h:163
Definition: mesh.c:198
int __gl_meshTessellateMonoRegion(GLUface *face)
Definition: tessmono.c:72
int __gl_meshSetWindingNumber(GLUmesh *mesh, int value, GLboolean keepOnlyBoundary)
Definition: tessmono.c:179
void __gl_meshDiscardExterior(GLUmesh *mesh)
Definition: tessmono.c:155
int __gl_meshTessellateInterior(GLUmesh *mesh)
Definition: tessmono.c:133
Definition: pdh_main.c:94