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:
10 ** http://oss.sgi.com/projects/FreeB
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.
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.
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.
38 #ifndef _BEZIERPATCHMESH_H
39 #define _BEZIERPATCHMESH_H
41 #include "bezierPatch.h"
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*/
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*/
53 /*to support dynamic insertion*/
56 int size_length_array
;
57 int index_length_array
;
59 int counter
; /*track the current strip size*/
60 GLenum type
; /*track the current type: 0: GL_TRIANGLES, 1: GL_TRIANGLE_STRIP*/
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*/
66 float *texcoord_array
;
68 /*in case we need a linked list*/
69 struct bezierPatchMesh
*next
;
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
);
80 /*initilize patches to be null*/
81 bezierPatchMesh
*bezierPatchMeshMake2(int size_UVarray
, int size_length_array
);
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
);
85 void bezierPatchMeshDelete(bezierPatchMesh
*bpm
);
87 void bezierPatchMeshBeginStrip(bezierPatchMesh
*bpm
, GLenum type
);
89 void bezierPatchMeshEndStrip(bezierPatchMesh
*bpm
);
91 void bezierPatchMeshInsertUV(bezierPatchMesh
*bpm
, float u
, float v
);
93 void bezierPatchMeshPrint(bezierPatchMesh
*bpm
);
95 bezierPatchMesh
* bezierPatchMeshListInsert(bezierPatchMesh
* list
, bezierPatchMesh
* bpm
);
97 void bezierPatchMeshListPrint(bezierPatchMesh
* list
);
99 int bezierPatchMeshListTotalStrips(bezierPatchMesh
* list
);
101 int bezierPatchMeshListTotalVert(bezierPatchMesh
* list
);
102 int bezierPatchMeshNumTriangles(bezierPatchMesh
* bpm
);
103 int bezierPatchMeshListNumTriangles(bezierPatchMesh
* list
);
105 void bezierPatchMeshDelDeg(bezierPatchMesh
* bpm
);
108 void bezierPatchMeshEval(bezierPatchMesh
* bpm
);
110 void bezierPatchMeshDraw(bezierPatchMesh
* bpm
);
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
);
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
);