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

   1 /*
   2  * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
   3  * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice including the dates of first publication and
  13  * either this permission notice or a reference to
  14  * http://oss.sgi.com/projects/FreeB/
  15  * shall be included in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  20  * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  21  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  22  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23  * SOFTWARE.
  24  *
  25  * Except as contained in this notice, the name of Silicon Graphics, Inc.
  26  * shall not be used in advertising or otherwise to promote the sale, use or
  27  * other dealings in this Software without prior written authorization from
  28  * Silicon Graphics, Inc.
  29  */
  30 /*
  31 */
  32
  33 #ifndef _BEZIERPATCHMESH_H
  34 #define _BEZIERPATCHMESH_H
  35
  36 #include "bezierPatch.h"
  37
  38 typedef struct bezierPatchMesh{
  39   bezierPatch *bpatch; /*vertex*/
  40   bezierPatch *bpatch_normal;
  41   bezierPatch *bpatch_texcoord; /*s,t,r,q*/
  42   bezierPatch *bpatch_color; /*RGBA*/
  43
  44   float *UVarray; /*all UV components of all vertices of all strips*/
  45   int   *length_array; /*[i] is the number of vertices in the ith strip*/
  46   GLenum *type_array;  /*[i] is the type of the ith primitive*/
  47
  48   /*to support dynamic insertion*/
  49   int size_UVarray;
  50   int index_UVarray;
  51   int size_length_array;
  52   int index_length_array;
  53
  54   int counter; /*track the current strip size*/
  55   GLenum type; /*track the current type: 0: GL_TRIANGLES, 1: GL_TRIANGLE_STRIP*/
  56
  57   /*we eventually want to evaluate from (u,v) to (x,y,z) and draw them*/
  58   float *vertex_array; /*each vertex contains three components*/
  59   float *normal_array; /*each normal contains three components*/
  60   float *color_array;
  61   float *texcoord_array;
  62
  63   /*in case we need a linked list*/
  64   struct bezierPatchMesh *next;
  65 } bezierPatchMesh;
  66
  67 #ifdef __cplusplus
  68 extern "C" {
  69 #endif
  70
  71
  72
  73 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);
  74
  75 /*initilize patches to be null*/
  76 bezierPatchMesh *bezierPatchMeshMake2(int size_UVarray, int size_length_array);
  77
  78 void bezierPatchMeshPutPatch(bezierPatchMesh *bpm, int maptype, float umin, float umax, int ustride, int uorder, float vmin, float vmax, int vstride, int vorder, float *ctlpoints);
  79
  80 void bezierPatchMeshDelete(bezierPatchMesh *bpm);
  81
  82 void bezierPatchMeshBeginStrip(bezierPatchMesh *bpm, GLenum type);
  83
  84 void bezierPatchMeshEndStrip(bezierPatchMesh *bpm);
  85
  86 void bezierPatchMeshInsertUV(bezierPatchMesh *bpm, float u, float v);
  87
  88 void bezierPatchMeshPrint(bezierPatchMesh *bpm);
  89
  90 bezierPatchMesh* bezierPatchMeshListInsert(bezierPatchMesh* list, bezierPatchMesh* bpm);
  91
  92 void bezierPatchMeshListPrint(bezierPatchMesh* list);
  93
  94 int bezierPatchMeshListTotalStrips(bezierPatchMesh* list);
  95
  96 int bezierPatchMeshListTotalVert(bezierPatchMesh* list);
  97 int bezierPatchMeshNumTriangles(bezierPatchMesh* bpm);
  98 int bezierPatchMeshListNumTriangles(bezierPatchMesh* list);
  99
 100 void bezierPatchMeshDelDeg(bezierPatchMesh* bpm);
 101
 102
 103 void bezierPatchMeshEval(bezierPatchMesh* bpm);
 104
 105 void bezierPatchMeshDraw(bezierPatchMesh* bpm);
 106
 107 void bezierPatchMeshListDraw(bezierPatchMesh* list);
 108 void bezierPatchMeshListEval(bezierPatchMesh* list);
 109 void bezierPatchMeshListCollect(bezierPatchMesh* list, float **vertex_array, float **normal_array, int **length_array, GLenum **type_array, int *num_strips);
 110
 111 void bezierPatchMeshListDelDeg(bezierPatchMesh* list);
 112 void bezierPatchMeshListDelete(bezierPatchMesh *list);
 113 bezierPatchMesh* bezierPatchMeshListReverse(bezierPatchMesh* list);
 114 void drawStrips(float *vertex_array, float *normal_array, int *length_array, GLenum *type_array, int num_strips);
 115
 116 #ifdef __cplusplus
 117 }
 118 #endif
 119
 120 #endif