Initial revision

1 files changed, 121 insertions, 0 deletions

diff --git a/src/glu/mesa/tess.h b/src/glu/mesa/tess.h
new file mode 100644
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+/* $Id: tess.h,v 1.1 1999/08/19 00:55:42 jtg Exp $ */
+
+/*
+ * Mesa 3-D graphics library
+ * Version:  3.1
+ * Copyright (C) 1995-1998  Brian Paul
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+
+/*
+ * $Log: tess.h,v $
+ * Revision 1.1  1999/08/19 00:55:42  jtg
+ * Initial revision
+ *
+ * Revision 1.5  1999/02/27 13:55:31  brianp
+ * fixed BeOS-related GLU typedef problems
+ *
+ * Revision 1.4  1999/01/03 03:23:15  brianp
+ * now using GLAPIENTRY and GLCALLBACK keywords (Ted Jump)
+ *
+ * Revision 1.3  1997/10/29 02:02:20  brianp
+ * various MS Windows compiler changes (David Bucciarelli, v20 3dfx driver)
+ *
+ * Revision 1.2  1997/05/24 13:30:58  brianp
+ * added TESS_H multi-inclusion prevention test
+ *
+ * Revision 1.1  1996/09/27 01:19:39  brianp
+ * Initial revision
+ *
+ */
+
+
+/*
+ * This file is part of the polygon tesselation code contributed by
+ * Bogdan Sikorski
+ */
+
+
+#ifndef TESS_H
+#define TESS_H
+
+
+#include "gluP.h"
+
+#define EPSILON 1e-06 /* epsilon for double precision compares */
+
+typedef enum
+{
+	OXY,
+	OYZ,
+	OXZ
+} projection_type;
+
+typedef struct callbacks_str
+{
+	void (GLCALLBACK *begin)( GLenum mode );
+	void (GLCALLBACK *edgeFlag)( GLboolean flag );
+	void (GLCALLBACK *vertex)( GLvoid *v );
+	void (GLCALLBACK *end)( void );
+	void (GLCALLBACK *error)( GLenum err );
+} tess_callbacks;
+
+typedef struct vertex_str
+{
+	void				*data;
+	GLdouble			location[3];
+	GLdouble			x,y;
+	GLboolean			edge_flag;
+	struct vertex_str	*shadow_vertex;
+	struct vertex_str	*next,*previous;
+} tess_vertex;
+
+typedef struct contour_str
+{
+	GLenum				type;
+	GLuint				vertex_cnt;
+	GLdouble			area;
+	GLenum				orientation;
+	struct vertex_str	*vertices,*last_vertex;
+	struct contour_str	*next,*previous;
+} tess_contour;
+
+typedef struct polygon_str
+{
+	GLuint				vertex_cnt;
+	GLdouble			A,B,C,D;
+	GLdouble			area;
+	GLenum				orientation;
+	struct vertex_str	*vertices,*last_vertex;
+} tess_polygon;
+
+struct GLUtesselator
+{
+	tess_contour		*contours,*last_contour;
+	GLuint				contour_cnt;
+	tess_callbacks		callbacks;
+	tess_polygon		*current_polygon;
+	GLenum				error;
+	GLdouble			A,B,C,D;
+	projection_type		projection;
+};
+
+
+extern void tess_call_user_error(GLUtriangulatorObj *,GLenum);
+
+
+#endif