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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 55 | pj | 1 | /* $Id: nurbs.c,v 1.1 2003-02-28 11:42:07 pj Exp $ */ |
| 2 | |||
| 3 | /* |
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| 4 | * Mesa 3-D graphics library |
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| 5 | * Version: 3.3 |
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| 6 | * Copyright (C) 1995-2000 Brian Paul |
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| 7 | * |
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| 8 | * This library is free software; you can redistribute it and/or |
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| 9 | * modify it under the terms of the GNU Library General Public |
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| 10 | * License as published by the Free Software Foundation; either |
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| 11 | * version 2 of the License, or (at your option) any later version. |
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| 12 | * |
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| 13 | * This library is distributed in the hope that it will be useful, |
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 16 | * Library General Public License for more details. |
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| 17 | * |
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| 18 | * You should have received a copy of the GNU Library General Public |
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| 19 | * License along with this library; if not, write to the Free |
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| 20 | * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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| 21 | */ |
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| 22 | |||
| 23 | |||
| 24 | /* |
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| 25 | * NURBS implementation written by Bogdan Sikorski (bogdan@cira.it) |
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| 26 | * See README2 for more info. |
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| 27 | */ |
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| 28 | |||
| 29 | |||
| 30 | #ifdef PC_HEADER |
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| 31 | #include "all.h" |
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| 32 | #else |
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| 33 | #include <stdio.h> |
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| 34 | #include <stdlib.h> |
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| 35 | #include "gluP.h" |
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| 36 | #include "nurbs.h" |
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| 37 | #endif |
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| 38 | |||
| 39 | |||
| 40 | void |
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| 41 | call_user_error(GLUnurbsObj * nobj, GLenum error) |
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| 42 | { |
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| 43 | nobj->error = error; |
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| 44 | if (nobj->error_callback != NULL) { |
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| 45 | (*(nobj->error_callback)) (error); |
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| 46 | } |
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| 47 | else { |
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| 48 | printf("NURBS error %d %s\n", error, (char *) gluErrorString(error)); |
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| 49 | } |
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| 50 | } |
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| 51 | |||
| 52 | |||
| 53 | |||
| 54 | GLUnurbsObj *GLAPIENTRY |
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| 55 | gluNewNurbsRenderer(void) |
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| 56 | { |
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| 57 | GLUnurbsObj *n; |
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| 58 | GLfloat tmp_viewport[4]; |
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| 59 | GLint i, j; |
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| 60 | |||
| 61 | n = (GLUnurbsObj *) malloc(sizeof(GLUnurbsObj)); |
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| 62 | if (n) { |
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| 63 | /* init */ |
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| 64 | n->culling = GL_FALSE; |
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| 65 | n->nurbs_type = GLU_NURBS_NONE; |
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| 66 | n->error = GLU_NO_ERROR; |
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| 67 | n->error_callback = NULL; |
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| 68 | n->auto_load_matrix = GL_TRUE; |
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| 69 | n->sampling_tolerance = 50.0; |
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| 70 | n->parametric_tolerance = 0.5; |
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| 71 | n->u_step = n->v_step = 100; |
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| 72 | n->sampling_method = GLU_PATH_LENGTH; |
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| 73 | n->display_mode = GLU_FILL; |
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| 74 | /* in case the user doesn't supply the sampling matrices */ |
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| 75 | /* set projection and modelview to identity */ |
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| 76 | for (i = 0; i < 4; i++) |
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| 77 | for (j = 0; j < 4; j++) |
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| 78 | if (i == j) { |
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| 79 | n->sampling_matrices.model[i * 4 + j] = 1.0; |
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| 80 | n->sampling_matrices.proj[i * 4 + j] = 1.0; |
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| 81 | } |
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| 82 | else { |
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| 83 | n->sampling_matrices.model[i * 4 + j] = 0.0; |
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| 84 | n->sampling_matrices.proj[i * 4 + j] = 0.0; |
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| 85 | } |
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| 86 | /* and set the viewport sampling matrix to current ciewport */ |
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| 87 | glGetFloatv(GL_VIEWPORT, tmp_viewport); |
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| 88 | for (i = 0; i < 4; i++) |
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| 89 | n->sampling_matrices.viewport[i] = tmp_viewport[i]; |
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| 90 | n->trim = NULL; |
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| 91 | } |
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| 92 | return n; |
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| 93 | } |
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| 94 | |||
| 95 | |||
| 96 | |||
| 97 | void GLAPIENTRY |
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| 98 | gluDeleteNurbsRenderer(GLUnurbsObj * nobj) |
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| 99 | { |
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| 100 | if (nobj) { |
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| 101 | free(nobj); |
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| 102 | } |
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| 103 | } |
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| 104 | |||
| 105 | |||
| 106 | |||
| 107 | void GLAPIENTRY |
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| 108 | gluLoadSamplingMatrices(GLUnurbsObj * nobj, |
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| 109 | const GLfloat modelMatrix[16], |
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| 110 | const GLfloat projMatrix[16], const GLint viewport[4]) |
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| 111 | { |
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| 112 | GLint i; |
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| 113 | |||
| 114 | for (i = 0; i < 16; i++) { |
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| 115 | nobj->sampling_matrices.model[i] = modelMatrix[i]; |
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| 116 | nobj->sampling_matrices.proj[i] = projMatrix[i]; |
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| 117 | } |
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| 118 | for (i = 0; i < 4; i++) |
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| 119 | nobj->sampling_matrices.viewport[i] = viewport[i]; |
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| 120 | } |
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| 121 | |||
| 122 | |||
| 123 | void GLAPIENTRY |
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| 124 | gluNurbsProperty(GLUnurbsObj * nobj, GLenum property, GLfloat value) |
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| 125 | { |
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| 126 | GLenum val; |
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| 127 | |||
| 128 | switch (property) { |
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| 129 | case GLU_SAMPLING_TOLERANCE: |
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| 130 | if (value <= 0.0) { |
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| 131 | call_user_error(nobj, GLU_INVALID_VALUE); |
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| 132 | return; |
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| 133 | } |
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| 134 | nobj->sampling_tolerance = value; |
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| 135 | break; |
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| 136 | case GLU_PARAMETRIC_TOLERANCE: |
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| 137 | if (value <= 0.0) { |
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| 138 | call_user_error(nobj, GLU_INVALID_VALUE); |
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| 139 | return; |
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| 140 | } |
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| 141 | nobj->parametric_tolerance = value; |
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| 142 | break; |
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| 143 | case GLU_U_STEP: |
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| 144 | if (value <= 0.0) { |
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| 145 | call_user_error(nobj, GLU_INVALID_VALUE); |
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| 146 | return; |
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| 147 | } |
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| 148 | nobj->u_step = (GLint) value; |
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| 149 | break; |
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| 150 | case GLU_V_STEP: |
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| 151 | if (value <= 0.0) { |
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| 152 | call_user_error(nobj, GLU_INVALID_VALUE); |
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| 153 | return; |
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| 154 | } |
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| 155 | nobj->v_step = (GLint) value; |
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| 156 | break; |
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| 157 | case GLU_SAMPLING_METHOD: |
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| 158 | val = (GLenum) value; |
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| 159 | if (val != GLU_PATH_LENGTH && val != GLU_PARAMETRIC_ERROR |
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| 160 | && val != GLU_DOMAIN_DISTANCE) { |
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| 161 | call_user_error(nobj, GLU_INVALID_ENUM); |
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| 162 | return; |
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| 163 | } |
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| 164 | nobj->sampling_method = val; |
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| 165 | break; |
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| 166 | case GLU_DISPLAY_MODE: |
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| 167 | val = (GLenum) value; |
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| 168 | if (val != GLU_FILL && val != GLU_OUTLINE_POLYGON |
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| 169 | && val != GLU_OUTLINE_PATCH) { |
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| 170 | call_user_error(nobj, GLU_INVALID_ENUM); |
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| 171 | return; |
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| 172 | } |
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| 173 | if (nobj->nurbs_type == GLU_NURBS_CURVE) { |
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| 174 | call_user_error(nobj, GLU_NURBS_ERROR26); |
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| 175 | return; |
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| 176 | } |
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| 177 | nobj->display_mode = val; |
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| 178 | if (val == GLU_OUTLINE_PATCH) |
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| 179 | fprintf(stderr, |
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| 180 | "NURBS, for the moment, can display only in POLYGON mode\n"); |
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| 181 | break; |
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| 182 | case GLU_CULLING: |
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| 183 | val = (GLenum) value; |
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| 184 | if (val != GL_TRUE && val != GL_FALSE) { |
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| 185 | call_user_error(nobj, GLU_INVALID_ENUM); |
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| 186 | return; |
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| 187 | } |
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| 188 | nobj->culling = (GLboolean) value; |
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| 189 | break; |
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| 190 | case GLU_AUTO_LOAD_MATRIX: |
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| 191 | val = (GLenum) value; |
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| 192 | if (val != GL_TRUE && val != GL_FALSE) { |
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| 193 | call_user_error(nobj, GLU_INVALID_ENUM); |
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| 194 | return; |
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| 195 | } |
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| 196 | nobj->auto_load_matrix = (GLboolean) value; |
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| 197 | break; |
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| 198 | default: |
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| 199 | call_user_error(nobj, GLU_NURBS_ERROR26); |
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| 200 | } |
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| 201 | } |
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| 202 | |||
| 203 | |||
| 204 | void GLAPIENTRY |
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| 205 | gluGetNurbsProperty(GLUnurbsObj * nobj, GLenum property, GLfloat * value) |
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| 206 | { |
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| 207 | switch (property) { |
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| 208 | case GLU_SAMPLING_TOLERANCE: |
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| 209 | *value = nobj->sampling_tolerance; |
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| 210 | break; |
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| 211 | case GLU_DISPLAY_MODE: |
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| 212 | *value = (GLfloat) (GLint) nobj->display_mode; |
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| 213 | break; |
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| 214 | case GLU_CULLING: |
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| 215 | *value = nobj->culling ? 1.0 : 0.0; |
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| 216 | break; |
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| 217 | case GLU_AUTO_LOAD_MATRIX: |
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| 218 | *value = nobj->auto_load_matrix ? 1.0 : 0.0; |
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| 219 | break; |
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| 220 | default: |
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| 221 | call_user_error(nobj, GLU_INVALID_ENUM); |
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| 222 | } |
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| 223 | } |
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| 224 | |||
| 225 | |||
| 226 | |||
| 227 | void GLAPIENTRY |
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| 228 | gluBeginCurve(GLUnurbsObj * nobj) |
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| 229 | { |
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| 230 | if (nobj->nurbs_type == GLU_NURBS_CURVE) { |
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| 231 | call_user_error(nobj, GLU_NURBS_ERROR6); |
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| 232 | return; |
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| 233 | } |
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| 234 | nobj->nurbs_type = GLU_NURBS_CURVE; |
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| 235 | nobj->curve.geom.type = GLU_INVALID_ENUM; |
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| 236 | nobj->curve.color.type = GLU_INVALID_ENUM; |
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| 237 | nobj->curve.texture.type = GLU_INVALID_ENUM; |
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| 238 | nobj->curve.normal.type = GLU_INVALID_ENUM; |
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| 239 | } |
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| 240 | |||
| 241 | |||
| 242 | void GLAPIENTRY |
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| 243 | gluEndCurve(GLUnurbsObj * nobj) |
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| 244 | { |
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| 245 | if (nobj->nurbs_type == GLU_NURBS_NONE) { |
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| 246 | call_user_error(nobj, GLU_NURBS_ERROR7); |
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| 247 | return; |
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| 248 | } |
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| 249 | if (nobj->curve.geom.type == GLU_INVALID_ENUM) { |
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| 250 | call_user_error(nobj, GLU_NURBS_ERROR8); |
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| 251 | nobj->nurbs_type = GLU_NURBS_NONE; |
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| 252 | return; |
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| 253 | } |
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| 254 | glPushAttrib((GLbitfield) (GL_EVAL_BIT | GL_ENABLE_BIT)); |
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| 255 | glDisable(GL_MAP1_VERTEX_3); |
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| 256 | glDisable(GL_MAP1_VERTEX_4); |
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| 257 | glDisable(GL_MAP1_INDEX); |
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| 258 | glDisable(GL_MAP1_COLOR_4); |
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| 259 | glDisable(GL_MAP1_NORMAL); |
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| 260 | glDisable(GL_MAP1_TEXTURE_COORD_1); |
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| 261 | glDisable(GL_MAP1_TEXTURE_COORD_2); |
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| 262 | glDisable(GL_MAP1_TEXTURE_COORD_3); |
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| 263 | glDisable(GL_MAP1_TEXTURE_COORD_4); |
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| 264 | glDisable(GL_MAP2_VERTEX_3); |
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| 265 | glDisable(GL_MAP2_VERTEX_4); |
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| 266 | glDisable(GL_MAP2_INDEX); |
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| 267 | glDisable(GL_MAP2_COLOR_4); |
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| 268 | glDisable(GL_MAP2_NORMAL); |
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| 269 | glDisable(GL_MAP2_TEXTURE_COORD_1); |
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| 270 | glDisable(GL_MAP2_TEXTURE_COORD_2); |
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| 271 | glDisable(GL_MAP2_TEXTURE_COORD_3); |
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| 272 | glDisable(GL_MAP2_TEXTURE_COORD_4); |
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| 273 | do_nurbs_curve(nobj); |
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| 274 | glPopAttrib(); |
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| 275 | nobj->nurbs_type = GLU_NURBS_NONE; |
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| 276 | } |
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| 277 | |||
| 278 | |||
| 279 | void GLAPIENTRY |
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| 280 | gluNurbsCurve(GLUnurbsObj * nobj, GLint nknots, GLfloat * knot, |
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| 281 | GLint stride, GLfloat * ctlarray, GLint order, GLenum type) |
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| 282 | { |
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| 283 | if (nobj->nurbs_type == GLU_NURBS_TRIM) { |
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| 284 | #if 0 |
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| 285 | /* TODO: NOT IMPLEMENTED YET */ |
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| 286 | nurbs_trim *ptr1; |
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| 287 | trim_list *ptr2; |
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| 288 | |||
| 289 | if (type != GLU_MAP1_TRIM_2 && type != GLU_MAP1_TRIM_3) { |
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| 290 | call_user_error(nobj, GLU_NURBS_ERROR14); |
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| 291 | return; |
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| 292 | } |
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| 293 | for (ptr1 = nobj->trim; ptr1->next; ptr1 = ptr1->next); |
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| 294 | if (ptr1->trim_loop) { |
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| 295 | for (ptr2 = ptr1->trim_loop; ptr2->next; ptr2 = ptr2->next); |
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| 296 | if ((ptr2->next = (trim_list *) malloc(sizeof(trim_list))) == NULL) { |
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| 297 | call_user_error(nobj, GLU_OUT_OF_MEMORY); |
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| 298 | return; |
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| 299 | } |
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| 300 | ptr2 = ptr2->next; |
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| 301 | } |
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| 302 | else { |
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| 303 | if ((ptr2 = (trim_list *) malloc(sizeof(trim_list))) == NULL) { |
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| 304 | call_user_error(nobj, GLU_OUT_OF_MEMORY); |
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| 305 | return; |
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| 306 | } |
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| 307 | ptr1->trim_loop = ptr2; |
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| 308 | } |
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| 309 | ptr2->trim_type = GLU_TRIM_NURBS; |
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| 310 | ptr2->curve.nurbs_curve.knot_count = nknots; |
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| 311 | ptr2->curve.nurbs_curve.knot = knot; |
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| 312 | ptr2->curve.nurbs_curve.stride = stride; |
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| 313 | ptr2->curve.nurbs_curve.ctrlarray = ctlarray; |
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| 314 | ptr2->curve.nurbs_curve.order = order; |
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| 315 | ptr2->curve.nurbs_curve.dim = (type == GLU_MAP1_TRIM_2 ? 2 : 3); |
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| 316 | ptr2->curve.nurbs_curve.type = type; |
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| 317 | ptr2->next = NULL; |
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| 318 | #endif |
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| 319 | } |
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| 320 | else { |
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| 321 | if (type == GLU_MAP1_TRIM_2 || type == GLU_MAP1_TRIM_3) { |
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| 322 | call_user_error(nobj, GLU_NURBS_ERROR22); |
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| 323 | return; |
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| 324 | } |
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| 325 | if (nobj->nurbs_type != GLU_NURBS_CURVE) { |
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| 326 | call_user_error(nobj, GLU_NURBS_ERROR10); |
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| 327 | return; |
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| 328 | } |
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| 329 | switch (type) { |
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| 330 | case GL_MAP1_VERTEX_3: |
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| 331 | case GL_MAP1_VERTEX_4: |
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| 332 | if (nobj->curve.geom.type != GLU_INVALID_ENUM) { |
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| 333 | call_user_error(nobj, GLU_NURBS_ERROR8); |
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| 334 | return; |
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| 335 | } |
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| 336 | nobj->curve.geom.type = type; |
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| 337 | nobj->curve.geom.knot_count = nknots; |
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| 338 | nobj->curve.geom.knot = knot; |
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| 339 | nobj->curve.geom.stride = stride; |
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| 340 | nobj->curve.geom.ctrlarray = ctlarray; |
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| 341 | nobj->curve.geom.order = order; |
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| 342 | break; |
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| 343 | case GL_MAP1_INDEX: |
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| 344 | case GL_MAP1_COLOR_4: |
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| 345 | nobj->curve.color.type = type; |
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| 346 | nobj->curve.color.knot_count = nknots; |
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| 347 | nobj->curve.color.knot = knot; |
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| 348 | nobj->curve.color.stride = stride; |
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| 349 | nobj->curve.color.ctrlarray = ctlarray; |
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| 350 | nobj->curve.color.order = order; |
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| 351 | break; |
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| 352 | case GL_MAP1_NORMAL: |
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| 353 | nobj->curve.normal.type = type; |
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| 354 | nobj->curve.normal.knot_count = nknots; |
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| 355 | nobj->curve.normal.knot = knot; |
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| 356 | nobj->curve.normal.stride = stride; |
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| 357 | nobj->curve.normal.ctrlarray = ctlarray; |
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| 358 | nobj->curve.normal.order = order; |
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| 359 | break; |
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| 360 | case GL_MAP1_TEXTURE_COORD_1: |
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| 361 | case GL_MAP1_TEXTURE_COORD_2: |
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| 362 | case GL_MAP1_TEXTURE_COORD_3: |
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| 363 | case GL_MAP1_TEXTURE_COORD_4: |
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| 364 | nobj->curve.texture.type = type; |
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| 365 | nobj->curve.texture.knot_count = nknots; |
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| 366 | nobj->curve.texture.knot = knot; |
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| 367 | nobj->curve.texture.stride = stride; |
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| 368 | nobj->curve.texture.ctrlarray = ctlarray; |
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| 369 | nobj->curve.texture.order = order; |
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| 370 | break; |
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| 371 | default: |
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| 372 | call_user_error(nobj, GLU_INVALID_ENUM); |
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| 373 | } |
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| 374 | } |
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| 375 | } |
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| 376 | |||
| 377 | |||
| 378 | void GLAPIENTRY |
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| 379 | gluBeginSurface(GLUnurbsObj * nobj) |
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| 380 | { |
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| 381 | switch (nobj->nurbs_type) { |
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| 382 | case GLU_NURBS_NONE: |
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| 383 | nobj->nurbs_type = GLU_NURBS_SURFACE; |
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| 384 | nobj->surface.geom.type = GLU_INVALID_ENUM; |
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| 385 | nobj->surface.color.type = GLU_INVALID_ENUM; |
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| 386 | nobj->surface.texture.type = GLU_INVALID_ENUM; |
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| 387 | nobj->surface.normal.type = GLU_INVALID_ENUM; |
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| 388 | break; |
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| 389 | case GLU_NURBS_TRIM: |
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| 390 | call_user_error(nobj, GLU_NURBS_ERROR16); |
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| 391 | break; |
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| 392 | case GLU_NURBS_SURFACE: |
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| 393 | case GLU_NURBS_NO_TRIM: |
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| 394 | case GLU_NURBS_TRIM_DONE: |
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| 395 | call_user_error(nobj, GLU_NURBS_ERROR27); |
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| 396 | break; |
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| 397 | case GLU_NURBS_CURVE: |
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| 398 | call_user_error(nobj, GLU_NURBS_ERROR6); |
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| 399 | break; |
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| 400 | } |
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| 401 | } |
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| 402 | |||
| 403 | |||
| 404 | void GLAPIENTRY |
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| 405 | gluEndSurface(GLUnurbsObj * nobj) |
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| 406 | { |
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| 407 | switch (nobj->nurbs_type) { |
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| 408 | case GLU_NURBS_NONE: |
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| 409 | call_user_error(nobj, GLU_NURBS_ERROR13); |
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| 410 | break; |
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| 411 | case GLU_NURBS_TRIM: |
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| 412 | call_user_error(nobj, GLU_NURBS_ERROR12); |
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| 413 | break; |
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| 414 | case GLU_NURBS_TRIM_DONE: |
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| 415 | /* if(nobj->trim->trim_loop==NULL) |
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| 416 | { |
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| 417 | call_user_error(nobj,GLU_NURBS_ERROR18); |
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| 418 | return; |
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| 419 | }*/ |
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| 420 | /* no break - fallthrough */ |
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| 421 | case GLU_NURBS_NO_TRIM: |
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| 422 | glPushAttrib((GLbitfield) |
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| 423 | (GL_EVAL_BIT | GL_ENABLE_BIT | GL_POLYGON_BIT)); |
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| 424 | glDisable(GL_MAP2_VERTEX_3); |
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| 425 | glDisable(GL_MAP2_VERTEX_4); |
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| 426 | glDisable(GL_MAP2_INDEX); |
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| 427 | glDisable(GL_MAP2_COLOR_4); |
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| 428 | glDisable(GL_MAP2_NORMAL); |
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| 429 | glDisable(GL_MAP2_TEXTURE_COORD_1); |
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| 430 | glDisable(GL_MAP2_TEXTURE_COORD_2); |
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| 431 | glDisable(GL_MAP2_TEXTURE_COORD_3); |
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| 432 | glDisable(GL_MAP2_TEXTURE_COORD_4); |
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| 433 | /* glDisable(GL_MAP1_VERTEX_3); |
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| 434 | glDisable(GL_MAP1_VERTEX_4); |
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| 435 | glDisable(GL_MAP1_INDEX); |
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| 436 | glDisable(GL_MAP1_COLOR_4); |
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| 437 | glDisable(GL_MAP1_NORMAL); |
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| 438 | glDisable(GL_MAP1_TEXTURE_COORD_1); |
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| 439 | glDisable(GL_MAP1_TEXTURE_COORD_2); |
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| 440 | glDisable(GL_MAP1_TEXTURE_COORD_3); |
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| 441 | glDisable(GL_MAP1_TEXTURE_COORD_4);*/ |
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| 442 | do_nurbs_surface(nobj); |
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| 443 | glPopAttrib(); |
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| 444 | break; |
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| 445 | default: |
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| 446 | call_user_error(nobj, GLU_NURBS_ERROR8); |
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| 447 | } |
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| 448 | nobj->nurbs_type = GLU_NURBS_NONE; |
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| 449 | } |
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| 450 | |||
| 451 | |||
| 452 | void GLAPIENTRY |
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| 453 | gluNurbsSurface(GLUnurbsObj * nobj, |
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| 454 | GLint sknot_count, GLfloat * sknot, |
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| 455 | GLint tknot_count, GLfloat * tknot, |
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| 456 | GLint s_stride, GLint t_stride, |
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| 457 | GLfloat * ctrlarray, GLint sorder, GLint torder, GLenum type) |
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| 458 | { |
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| 459 | if (nobj->nurbs_type == GLU_NURBS_NO_TRIM |
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| 460 | || nobj->nurbs_type == GLU_NURBS_TRIM |
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| 461 | || nobj->nurbs_type == GLU_NURBS_TRIM_DONE) { |
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| 462 | if (type == GL_MAP2_VERTEX_3 || type == GL_MAP2_VERTEX_4) { |
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| 463 | call_user_error(nobj, GLU_NURBS_ERROR8); |
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| 464 | return; |
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| 465 | } |
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| 466 | } |
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| 467 | else if (nobj->nurbs_type != GLU_NURBS_SURFACE) { |
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| 468 | call_user_error(nobj, GLU_NURBS_ERROR11); |
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| 469 | return; |
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| 470 | } |
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| 471 | switch (type) { |
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| 472 | case GL_MAP2_VERTEX_3: |
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| 473 | case GL_MAP2_VERTEX_4: |
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| 474 | nobj->surface.geom.sknot_count = sknot_count; |
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| 475 | nobj->surface.geom.sknot = sknot; |
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| 476 | nobj->surface.geom.tknot_count = tknot_count; |
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| 477 | nobj->surface.geom.tknot = tknot; |
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| 478 | nobj->surface.geom.s_stride = s_stride; |
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| 479 | nobj->surface.geom.t_stride = t_stride; |
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| 480 | nobj->surface.geom.ctrlarray = ctrlarray; |
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| 481 | nobj->surface.geom.sorder = sorder; |
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| 482 | nobj->surface.geom.torder = torder; |
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| 483 | nobj->surface.geom.type = type; |
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| 484 | nobj->nurbs_type = GLU_NURBS_NO_TRIM; |
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| 485 | break; |
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| 486 | case GL_MAP2_INDEX: |
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| 487 | case GL_MAP2_COLOR_4: |
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| 488 | nobj->surface.color.sknot_count = sknot_count; |
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| 489 | nobj->surface.color.sknot = sknot; |
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| 490 | nobj->surface.color.tknot_count = tknot_count; |
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| 491 | nobj->surface.color.tknot = tknot; |
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| 492 | nobj->surface.color.s_stride = s_stride; |
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| 493 | nobj->surface.color.t_stride = t_stride; |
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| 494 | nobj->surface.color.ctrlarray = ctrlarray; |
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| 495 | nobj->surface.color.sorder = sorder; |
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| 496 | nobj->surface.color.torder = torder; |
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| 497 | nobj->surface.color.type = type; |
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| 498 | break; |
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| 499 | case GL_MAP2_NORMAL: |
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| 500 | nobj->surface.normal.sknot_count = sknot_count; |
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| 501 | nobj->surface.normal.sknot = sknot; |
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| 502 | nobj->surface.normal.tknot_count = tknot_count; |
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| 503 | nobj->surface.normal.tknot = tknot; |
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| 504 | nobj->surface.normal.s_stride = s_stride; |
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| 505 | nobj->surface.normal.t_stride = t_stride; |
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| 506 | nobj->surface.normal.ctrlarray = ctrlarray; |
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| 507 | nobj->surface.normal.sorder = sorder; |
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| 508 | nobj->surface.normal.torder = torder; |
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| 509 | nobj->surface.normal.type = type; |
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| 510 | break; |
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| 511 | case GL_MAP2_TEXTURE_COORD_1: |
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| 512 | case GL_MAP2_TEXTURE_COORD_2: |
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| 513 | case GL_MAP2_TEXTURE_COORD_3: |
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| 514 | case GL_MAP2_TEXTURE_COORD_4: |
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| 515 | nobj->surface.texture.sknot_count = sknot_count; |
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| 516 | nobj->surface.texture.sknot = sknot; |
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| 517 | nobj->surface.texture.tknot_count = tknot_count; |
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| 518 | nobj->surface.texture.tknot = tknot; |
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| 519 | nobj->surface.texture.s_stride = s_stride; |
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| 520 | nobj->surface.texture.t_stride = t_stride; |
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| 521 | nobj->surface.texture.ctrlarray = ctrlarray; |
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| 522 | nobj->surface.texture.sorder = sorder; |
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| 523 | nobj->surface.texture.torder = torder; |
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| 524 | nobj->surface.texture.type = type; |
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| 525 | break; |
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| 526 | default: |
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| 527 | call_user_error(nobj, GLU_INVALID_ENUM); |
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| 528 | } |
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| 529 | } |
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| 530 | |||
| 531 | |||
| 532 | void GLAPIENTRY |
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| 533 | gluNurbsCallback(GLUnurbsObj * nobj, GLenum which, void (GLCALLBACK * fn) ()) |
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| 534 | { |
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| 535 | nobj->error_callback = (void (GLCALLBACKPCAST) (GLenum)) fn; |
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| 536 | |||
| 537 | if (which != GLU_ERROR) |
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| 538 | call_user_error(nobj, GLU_INVALID_ENUM); |
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| 539 | } |
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| 540 | |||
| 541 | void GLAPIENTRY |
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| 542 | gluBeginTrim(GLUnurbsObj * nobj) |
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| 543 | { |
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| 544 | #if 0 |
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| 545 | nurbs_trim *ptr; |
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| 546 | #endif |
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| 547 | |||
| 548 | if (nobj->nurbs_type != GLU_NURBS_TRIM_DONE) |
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| 549 | if (nobj->nurbs_type != GLU_NURBS_NO_TRIM) { |
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| 550 | call_user_error(nobj, GLU_NURBS_ERROR15); |
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| 551 | return; |
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| 552 | } |
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| 553 | nobj->nurbs_type = GLU_NURBS_TRIM; |
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| 554 | fprintf(stderr, "NURBS - trimming not supported yet\n"); |
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| 555 | #if 0 |
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| 556 | if ((ptr = (nurbs_trim *) malloc(sizeof(nurbs_trim))) == NULL) { |
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| 557 | call_user_error(nobj, GLU_OUT_OF_MEMORY); |
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| 558 | return; |
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| 559 | } |
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| 560 | if (nobj->trim) { |
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| 561 | nurbs_trim *tmp_ptr; |
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| 562 | |||
| 563 | for (tmp_ptr = nobj->trim; tmp_ptr->next; tmp_ptr = tmp_ptr->next); |
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| 564 | tmp_ptr->next = ptr; |
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| 565 | } |
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| 566 | else |
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| 567 | nobj->trim = ptr; |
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| 568 | ptr->trim_loop = NULL; |
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| 569 | ptr->segments = NULL; |
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| 570 | ptr->next = NULL; |
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| 571 | #endif |
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| 572 | } |
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| 573 | |||
| 574 | void GLAPIENTRY |
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| 575 | gluPwlCurve(GLUnurbsObj * nobj, GLint count, GLfloat * array, GLint stride, |
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| 576 | GLenum type) |
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| 577 | { |
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| 578 | #if 0 |
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| 579 | nurbs_trim *ptr1; |
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| 580 | trim_list *ptr2; |
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| 581 | #endif |
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| 582 | if (nobj->nurbs_type == GLU_NURBS_CURVE) { |
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| 583 | call_user_error(nobj, GLU_NURBS_ERROR9); |
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| 584 | return; |
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| 585 | } |
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| 586 | if (nobj->nurbs_type == GLU_NURBS_NONE) { |
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| 587 | call_user_error(nobj, GLU_NURBS_ERROR19); |
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| 588 | return; |
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| 589 | } |
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| 590 | if (type != GLU_MAP1_TRIM_2 && type != GLU_MAP1_TRIM_3) { |
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| 591 | call_user_error(nobj, GLU_NURBS_ERROR14); |
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| 592 | return; |
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| 593 | } |
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| 594 | #if 0 |
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| 595 | for (ptr1 = nobj->trim; ptr1->next; ptr1 = ptr1->next); |
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| 596 | if (ptr1->trim_loop) { |
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| 597 | for (ptr2 = ptr1->trim_loop; ptr2->next; ptr2 = ptr2->next); |
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| 598 | if ((ptr2->next = (trim_list *) malloc(sizeof(trim_list))) == NULL) { |
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| 599 | call_user_error(nobj, GLU_OUT_OF_MEMORY); |
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| 600 | return; |
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| 601 | } |
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| 602 | ptr2 = ptr2->next; |
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| 603 | } |
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| 604 | else { |
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| 605 | if ((ptr2 = (trim_list *) malloc(sizeof(trim_list))) == NULL) { |
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| 606 | call_user_error(nobj, GLU_OUT_OF_MEMORY); |
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| 607 | return; |
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| 608 | } |
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| 609 | ptr1->trim_loop = ptr2; |
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| 610 | } |
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| 611 | ptr2->trim_type = GLU_TRIM_PWL; |
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| 612 | ptr2->curve.pwl_curve.pt_count = count; |
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| 613 | ptr2->curve.pwl_curve.ctrlarray = array; |
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| 614 | ptr2->curve.pwl_curve.stride = stride; |
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| 615 | ptr2->curve.pwl_curve.dim = (type == GLU_MAP1_TRIM_2 ? 2 : 3); |
||
| 616 | ptr2->curve.pwl_curve.type = type; |
||
| 617 | ptr2->next = NULL; |
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| 618 | #endif |
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| 619 | } |
||
| 620 | |||
| 621 | void GLAPIENTRY |
||
| 622 | gluEndTrim(GLUnurbsObj * nobj) |
||
| 623 | { |
||
| 624 | if (nobj->nurbs_type != GLU_NURBS_TRIM) { |
||
| 625 | call_user_error(nobj, GLU_NURBS_ERROR17); |
||
| 626 | return; |
||
| 627 | } |
||
| 628 | nobj->nurbs_type = GLU_NURBS_TRIM_DONE; |
||
| 629 | } |