src/glu/sgi/libnurbs/interface/bezierPatchMesh.h

   1 /*
   2 ** License Applicability. Except to the extent portions of this file are
   3 ** made subject to an alternative license as permitted in the SGI Free
   4 ** Software License B, Version 1.1 (the "License"), the contents of this
   5 ** file are subject only to the provisions of the License. You may not use
   6 ** this file except in compliance with the License. You may obtain a copy
   7 ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
   8 ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
   9 **
  10 ** http://oss.sgi.com/projects/FreeB
  11 **
  12 ** Note that, as provided in the License, the Software is distributed on an
  13 ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
  14 ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
  15 ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
  16 ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
  17 **
  18 ** Original Code. The Original Code is: OpenGL Sample Implementation,
  19 ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
  20 ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
  21 ** Copyright in any portions created by third parties is as indicated
  22 ** elsewhere herein. All Rights Reserved.
  23 **
  24 ** Additional Notice Provisions: The application programming interfaces
  25 ** established by SGI in conjunction with the Original Code are The
  26 ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
  27 ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
  28 ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
  29 ** Window System(R) (Version 1.3), released October 19, 1998. This software
  30 ** was created using the OpenGL(R) version 1.2.1 Sample Implementation
  31 ** published by SGI, but has not been independently verified as being
  32 ** compliant with the OpenGL(R) version 1.2.1 Specification.
  33 **
  34 */
  35 /*
  36 */
  37
  38 #ifndef _BEZIERPATCHMESH_H
  39 #define _BEZIERPATCHMESH_H
  40
  41 #include "bezierPatch.h"
  42
  43 typedef struct bezierPatchMesh{
  44   bezierPatch *bpatch; /*vertex*/
  45   bezierPatch *bpatch_normal;
  46   bezierPatch *bpatch_texcoord; /*s,t,r,q*/
  47   bezierPatch *bpatch_color; /*RGBA*/
  48
  49   float *UVarray; /*all UV components of all vertices of all strips*/
  50   int   *length_array; /*[i] is the number of vertices in the ith strip*/
  51   GLenum *type_array;  /*[i] is the type of the ith primitive*/
  52
  53   /*to support dynamic insertion*/
  54   int size_UVarray;
  55   int index_UVarray;
  56   int size_length_array;
  57   int index_length_array;
  58
  59   int counter; /*track the current strip size*/
  60   GLenum type; /*track the current type: 0: GL_TRIANGLES, 1: GL_TRIANGLE_STRIP*/
  61
  62   /*we eventually want to evaluate from (u,v) to (x,y,z) and draw them*/
  63   float *vertex_array; /*each vertex contains three components*/
  64   float *normal_array; /*each normal contains three components*/
  65   float *color_array;
  66   float *texcoord_array;
  67
  68   /*in case we need a linked list*/
  69   struct bezierPatchMesh *next;
  70 } bezierPatchMesh;
  71
  72 #ifdef __cplusplus
  73 extern "C" {
  74 #endif
  75
  76
  77
  78 bezierPatchMesh *bezierPatchMeshMake(int maptype, float umin, float umax, int ustride, int uorder, float vmin, float vmax, int vstride, int vorder, float *ctlpoints,  int size_UVarray, int size_length_array);
  79
  80 /*initilize patches to be null*/
  81 bezierPatchMesh *bezierPatchMeshMake2(int size_UVarray, int size_length_array);
  82
  83 void bezierPatchMeshPutPatch(bezierPatchMesh *bpm, int maptype, float umin, float umax, int ustride, int uorder, float vmin, float vmax, int vstride, int vorder, float *ctlpoints);
  84
  85 void bezierPatchMeshDelete(bezierPatchMesh *bpm);
  86
  87 void bezierPatchMeshBeginStrip(bezierPatchMesh *bpm, GLenum type);
  88
  89 void bezierPatchMeshEndStrip(bezierPatchMesh *bpm);
  90
  91 void bezierPatchMeshInsertUV(bezierPatchMesh *bpm, float u, float v);
  92
  93 void bezierPatchMeshPrint(bezierPatchMesh *bpm);
  94
  95 bezierPatchMesh* bezierPatchMeshListInsert(bezierPatchMesh* list, bezierPatchMesh* bpm);
  96
  97 void bezierPatchMeshListPrint(bezierPatchMesh* list);
  98
  99 int bezierPatchMeshListTotalStrips(bezierPatchMesh* list);
 100
 101 int bezierPatchMeshListTotalVert(bezierPatchMesh* list);
 102 int bezierPatchMeshNumTriangles(bezierPatchMesh* bpm);
 103 int bezierPatchMeshListNumTriangles(bezierPatchMesh* list);
 104
 105 void bezierPatchMeshDelDeg(bezierPatchMesh* bpm);
 106
 107
 108 void bezierPatchMeshEval(bezierPatchMesh* bpm);
 109
 110 void bezierPatchMeshDraw(bezierPatchMesh* bpm);
 111
 112 void bezierPatchMeshListDraw(bezierPatchMesh* list);
 113 void bezierPatchMeshListEval(bezierPatchMesh* list);
 114 void bezierPatchMeshListCollect(bezierPatchMesh* list, float **vertex_array, float **normal_array, int **length_array, GLenum **type_array, int *num_strips);
 115
 116 void bezierPatchMeshListDelDeg(bezierPatchMesh* list);
 117 void bezierPatchMeshListDelete(bezierPatchMesh *list);
 118 bezierPatchMesh* bezierPatchMeshListReverse(bezierPatchMesh* list);
 119 void drawStrips(float *vertex_array, float *normal_array, int *length_array, GLenum *type_array, int num_strips);
 120
 121 #ifdef __cplusplus
 122 }
 123 #endif
 124
 125 #endif