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 <GL/gl.h>
37#include "bezierPatch.h"
38
39typedef struct bezierPatchMesh{
40  bezierPatch *bpatch; /*vertex*/
41  bezierPatch *bpatch_normal;
42  bezierPatch *bpatch_texcoord; /*s,t,r,q*/
43  bezierPatch *bpatch_color; /*RGBA*/
44
45  float *UVarray; /*all UV components of all vertices of all strips*/
46  int   *length_array; /*[i] is the number of vertices in the ith strip*/
47  GLenum *type_array;  /*[i] is the type of the ith primitive*/
48
49  /*to support dynamic insertion*/
50  int size_UVarray;
51  int index_UVarray;
52  int size_length_array;
53  int index_length_array;
54
55  int counter; /*track the current strip size*/
56  GLenum type; /*track the current type: 0: GL_TRIANGLES, 1: GL_TRIANGLE_STRIP*/
57
58  /*we eventually want to evaluate from (u,v) to (x,y,z) and draw them*/
59  float *vertex_array; /*each vertex contains three components*/
60  float *normal_array; /*each normal contains three components*/
61  float *color_array;
62  float *texcoord_array;
63
64  /*in case we need a linked list*/
65  struct bezierPatchMesh *next;
66} bezierPatchMesh;
67
68#ifdef __cplusplus
69extern "C" {
70#endif
71
72
73
74bezierPatchMesh *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);
75
76/*initilize patches to be null*/
77bezierPatchMesh *bezierPatchMeshMake2(int size_UVarray, int size_length_array);
78
79void bezierPatchMeshPutPatch(bezierPatchMesh *bpm, int maptype, float umin, float umax, int ustride, int uorder, float vmin, float vmax, int vstride, int vorder, float *ctlpoints);
80
81void bezierPatchMeshDelete(bezierPatchMesh *bpm);
82
83void bezierPatchMeshBeginStrip(bezierPatchMesh *bpm, GLenum type);
84
85void bezierPatchMeshEndStrip(bezierPatchMesh *bpm);
86
87void bezierPatchMeshInsertUV(bezierPatchMesh *bpm, float u, float v);
88
89void bezierPatchMeshPrint(bezierPatchMesh *bpm);
90
91bezierPatchMesh* bezierPatchMeshListInsert(bezierPatchMesh* list, bezierPatchMesh* bpm);
92
93void bezierPatchMeshListPrint(bezierPatchMesh* list);
94
95int bezierPatchMeshListTotalStrips(bezierPatchMesh* list);
96
97int bezierPatchMeshListTotalVert(bezierPatchMesh* list);
98int bezierPatchMeshNumTriangles(bezierPatchMesh* bpm);
99int bezierPatchMeshListNumTriangles(bezierPatchMesh* list);
100
101void bezierPatchMeshDelDeg(bezierPatchMesh* bpm);
102
103
104void bezierPatchMeshEval(bezierPatchMesh* bpm);
105
106void bezierPatchMeshDraw(bezierPatchMesh* bpm);
107
108void bezierPatchMeshListDraw(bezierPatchMesh* list);
109void bezierPatchMeshListEval(bezierPatchMesh* list);
110void bezierPatchMeshListCollect(bezierPatchMesh* list, float **vertex_array, float **normal_array, int **length_array, GLenum **type_array, int *num_strips);
111
112void bezierPatchMeshListDelDeg(bezierPatchMesh* list);
113void bezierPatchMeshListDelete(bezierPatchMesh *list);
114bezierPatchMesh* bezierPatchMeshListReverse(bezierPatchMesh* list);
115void drawStrips(float *vertex_array, float *normal_array, int *length_array, GLenum *type_array, int num_strips);
116
117#ifdef __cplusplus
118}
119#endif
120
121#endif
122