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- /****************************************************************************
- * mesh.h
- *
- * This module contains all defines, typedefs, and prototypes for MESH.C.
- *
- * from Persistence of Vision(tm) Ray Tracer
- * Copyright 1996 Persistence of Vision Team
- *---------------------------------------------------------------------------
- * NOTICE: This source code file is provided so that users may experiment
- * with enhancements to POV-Ray and to port the software to platforms other
- * than those supported by the POV-Ray Team. There are strict rules under
- * which you are permitted to use this file. The rules are in the file
- * named POVLEGAL.DOC which should be distributed with this file. If
- * POVLEGAL.DOC is not available or for more info please contact the POV-Ray
- * Team Coordinator by leaving a message in CompuServe's Graphics Developer's
- * Forum. The latest version of POV-Ray may be found there as well.
- *
- * This program is based on the popular DKB raytracer version 2.12.
- * DKBTrace was originally written by David K. Buck.
- * DKBTrace Ver 2.0-2.12 were written by David K. Buck & Aaron A. Collins.
- *
- *****************************************************************************/
-
-
- #ifndef MESH_H
- #define MESH_H
-
- #include "bbox.h"
-
-
-
- /*****************************************************************************
- * Global preprocessor defines
- ******************************************************************************/
-
- #define MESH_OBJECT (PATCH_OBJECT+HIERARCHY_OK_OBJECT)
-
-
-
- /*****************************************************************************
- * Global typedefs
- ******************************************************************************/
-
- typedef struct Mesh_Struct MESH;
- typedef struct Mesh_Data_Struct MESH_DATA;
- typedef struct Mesh_Triangle_Struct MESH_TRIANGLE;
-
- struct Mesh_Struct
- {
- OBJECT_FIELDS
- TRANSFORM *Trans; /* Transformation for this object. */
- MESH_DATA *Data; /* Mesh data holding triangles. */
- };
-
- struct Mesh_Data_Struct
- {
- int References; /* Number of references to the mesh. */
- long Number_Of_Normals; /* Number of normals in the mesh. */
- long Number_Of_Textures; /* Number of textures in the mesh. */
- long Number_Of_Triangles; /* Number of trinagles in the mesh. */
- long Number_Of_Vertices; /* Number of vertices in the mesh. */
- SNGL_VECT *Normals, *Vertices; /* Arrays of normals and vertices. */
- TEXTURE **Textures; /* Array of texture references. */
- MESH_TRIANGLE *Triangles; /* Array of triangles. */
- BBOX_TREE *Tree; /* Bounding box tree for mesh. */
- };
-
- struct Mesh_Triangle_Struct
- {
- unsigned int Smooth:1; /* Is this a smooth triangle. */
- unsigned int Dominant_Axis:2; /* Dominant axis. */
- unsigned int vAxis:2; /* Axis for smooth triangle. */
- long P1, P2, P3; /* Indices of triangle vertices. */
- long Normal_Ind; /* Index of unsmoothed triangle normal. */
- long Texture; /* Index of triangle texture. */
- SNGL Distance; /* Distance of triangle along normal. */
- long N1, N2, N3; /* Indices of smoothed triangle normals. */
- SNGL_VECT Perp; /* Vector used for smooth triangles. */
- };
-
-
-
- /*****************************************************************************
- * Global variables
- ******************************************************************************/
-
- extern METHODS Mesh_Methods;
-
-
- /*****************************************************************************
- * Global functions
- ******************************************************************************/
-
- MESH *Create_Mesh PARAMS((void));
- int Compute_Mesh_Triangle PARAMS((MESH_TRIANGLE *Triangle, int Smooth, VECTOR P1, VECTOR P2, VECTOR P3, VECTOR S_Normal));
- void Compute_Mesh_BBox PARAMS((MESH *Mesh));
- void Init_Mesh_Triangle PARAMS((MESH_TRIANGLE *Triangle));
- void Build_Mesh_BBox_Tree PARAMS((MESH *Mesh));
- void Test_Mesh_Opacity PARAMS((MESH *Blob));
-
- void Create_Mesh_Hash_Tables PARAMS((void));
- void Destroy_Mesh_Hash_Tables PARAMS((void));
- int Mesh_Hash_Vertex PARAMS((int *Number_Of_Vertices, int *Max_Vertices, SNGL_VECT **Vertices, VECTOR Vertex));
- int Mesh_Hash_Normal PARAMS((int *Number_Of_Normals, int *Max_Normals, SNGL_VECT **Normals, VECTOR Normal));
- int Mesh_Hash_Texture PARAMS((int *Number_Of_Textures, int *Max_Textures, TEXTURE ***Textures, TEXTURE *Texture));
- int Mesh_Degenerate PARAMS((VECTOR P1, VECTOR P2, VECTOR P3));
- void Initialize_Mesh_Code PARAMS((void));
- void Deinitialize_Mesh_Code PARAMS((void));
-
-
-
- #endif
-