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-rw-r--r--src/glu/mesa/nurbscrv.c444
1 files changed, 0 insertions, 444 deletions
diff --git a/src/glu/mesa/nurbscrv.c b/src/glu/mesa/nurbscrv.c
deleted file mode 100644
index 4483e1f7761..00000000000
--- a/src/glu/mesa/nurbscrv.c
+++ /dev/null
@@ -1,444 +0,0 @@
-
-/*
- * Mesa 3-D graphics library
- * Version: 3.3
- * Copyright (C) 1995-2000 Brian Paul
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-
-/*
- * NURBS implementation written by Bogdan Sikorski (bogdan@cira.it)
- * See README2 for more info.
- */
-
-
-#ifdef PC_HEADER
-#include "all.h"
-#else
-#include <math.h>
-#include <stdlib.h>
-#include "gluP.h"
-#include "nurbs.h"
-#endif
-
-
-static int
-get_curve_dim(GLenum type)
-{
- switch (type) {
- case GL_MAP1_VERTEX_3:
- return 3;
- case GL_MAP1_VERTEX_4:
- return 4;
- case GL_MAP1_INDEX:
- return 1;
- case GL_MAP1_COLOR_4:
- return 4;
- case GL_MAP1_NORMAL:
- return 3;
- case GL_MAP1_TEXTURE_COORD_1:
- return 1;
- case GL_MAP1_TEXTURE_COORD_2:
- return 2;
- case GL_MAP1_TEXTURE_COORD_3:
- return 3;
- case GL_MAP1_TEXTURE_COORD_4:
- return 4;
- default:
- abort(); /* TODO: is this OK? */
- }
- return 0; /*never get here */
-}
-
-static GLenum
-test_nurbs_curve(GLUnurbsObj * nobj, curve_attribs * attribs)
-{
- GLenum err;
- GLint tmp_int;
-
- if (attribs->order < 0) {
- call_user_error(nobj, GLU_INVALID_VALUE);
- return GLU_ERROR;
- }
- glGetIntegerv(GL_MAX_EVAL_ORDER, &tmp_int);
- if (attribs->order > tmp_int || attribs->order < 2) {
- call_user_error(nobj, GLU_NURBS_ERROR1);
- return GLU_ERROR;
- }
- if (attribs->knot_count < attribs->order + 2) {
- call_user_error(nobj, GLU_NURBS_ERROR2);
- return GLU_ERROR;
- }
- if (attribs->stride < 0) {
- call_user_error(nobj, GLU_NURBS_ERROR34);
- return GLU_ERROR;
- }
- if (attribs->knot == NULL || attribs->ctrlarray == NULL) {
- call_user_error(nobj, GLU_NURBS_ERROR36);
- return GLU_ERROR;
- }
- if ((err = test_knot(attribs->knot_count, attribs->knot, attribs->order))
- != GLU_NO_ERROR) {
- call_user_error(nobj, err);
- return GLU_ERROR;
- }
- return GLU_NO_ERROR;
-}
-
-static GLenum
-test_nurbs_curves(GLUnurbsObj * nobj)
-{
- /* test the geometric data */
- if (test_nurbs_curve(nobj, &(nobj->curve.geom)) != GLU_NO_ERROR)
- return GLU_ERROR;
- /* now test the attributive data */
- /* color */
- if (nobj->curve.color.type != GLU_INVALID_ENUM)
- if (test_nurbs_curve(nobj, &(nobj->curve.color)) != GLU_NO_ERROR)
- return GLU_ERROR;
- /* normal */
- if (nobj->curve.normal.type != GLU_INVALID_ENUM)
- if (test_nurbs_curve(nobj, &(nobj->curve.normal)) != GLU_NO_ERROR)
- return GLU_ERROR;
- /* texture */
- if (nobj->curve.texture.type != GLU_INVALID_ENUM)
- if (test_nurbs_curve(nobj, &(nobj->curve.texture)) != GLU_NO_ERROR)
- return GLU_ERROR;
- return GLU_NO_ERROR;
-}
-
-/* prepare the knot information structures */
-static GLenum
-fill_knot_structures(GLUnurbsObj * nobj, knot_str_type * geom_knot,
- knot_str_type * color_knot, knot_str_type * normal_knot,
- knot_str_type * texture_knot)
-{
- GLint order;
- GLfloat *knot;
- GLint nknots;
- GLint t_min, t_max;
-
- geom_knot->unified_knot = NULL;
- knot = geom_knot->knot = nobj->curve.geom.knot;
- nknots = geom_knot->nknots = nobj->curve.geom.knot_count;
- order = geom_knot->order = nobj->curve.geom.order;
- geom_knot->delta_nknots = 0;
- t_min = geom_knot->t_min = order - 1;
- t_max = geom_knot->t_max = nknots - order;
- if (fabs(knot[t_min] - knot[t_max]) < EPSILON) {
- call_user_error(nobj, GLU_NURBS_ERROR3);
- return GLU_ERROR;
- }
- if (fabs(knot[0] - knot[t_min]) < EPSILON) {
- /* knot open at beggining */
- geom_knot->open_at_begin = GL_TRUE;
- }
- else
- geom_knot->open_at_begin = GL_FALSE;
- if (fabs(knot[t_max] - knot[nknots - 1]) < EPSILON) {
- /* knot open at end */
- geom_knot->open_at_end = GL_TRUE;
- }
- else
- geom_knot->open_at_end = GL_FALSE;
- if (nobj->curve.color.type != GLU_INVALID_ENUM) {
- color_knot->unified_knot = (GLfloat *) 1;
- knot = color_knot->knot = nobj->curve.color.knot;
- nknots = color_knot->nknots = nobj->curve.color.knot_count;
- order = color_knot->order = nobj->curve.color.order;
- color_knot->delta_nknots = 0;
- t_min = color_knot->t_min = order - 1;
- t_max = color_knot->t_max = nknots - order;
- if (fabs(knot[t_min] - knot[t_max]) < EPSILON) {
- call_user_error(nobj, GLU_NURBS_ERROR3);
- return GLU_ERROR;
- }
- if (fabs(knot[0] - knot[t_min]) < EPSILON) {
- /* knot open at beggining */
- color_knot->open_at_begin = GL_TRUE;
- }
- else
- color_knot->open_at_begin = GL_FALSE;
- if (fabs(knot[t_max] - knot[nknots - 1]) < EPSILON) {
- /* knot open at end */
- color_knot->open_at_end = GL_TRUE;
- }
- else
- color_knot->open_at_end = GL_FALSE;
- }
- else
- color_knot->unified_knot = NULL;
- if (nobj->curve.normal.type != GLU_INVALID_ENUM) {
- normal_knot->unified_knot = (GLfloat *) 1;
- knot = normal_knot->knot = nobj->curve.normal.knot;
- nknots = normal_knot->nknots = nobj->curve.normal.knot_count;
- order = normal_knot->order = nobj->curve.normal.order;
- normal_knot->delta_nknots = 0;
- t_min = normal_knot->t_min = order - 1;
- t_max = normal_knot->t_max = nknots - order;
- if (fabs(knot[t_min] - knot[t_max]) < EPSILON) {
- call_user_error(nobj, GLU_NURBS_ERROR3);
- return GLU_ERROR;
- }
- if (fabs(knot[0] - knot[t_min]) < EPSILON) {
- /* knot open at beggining */
- normal_knot->open_at_begin = GL_TRUE;
- }
- else
- normal_knot->open_at_begin = GL_FALSE;
- if (fabs(knot[t_max] - knot[nknots - 1]) < EPSILON) {
- /* knot open at end */
- normal_knot->open_at_end = GL_TRUE;
- }
- else
- normal_knot->open_at_end = GL_FALSE;
- }
- else
- normal_knot->unified_knot = NULL;
- if (nobj->curve.texture.type != GLU_INVALID_ENUM) {
- texture_knot->unified_knot = (GLfloat *) 1;
- knot = texture_knot->knot = nobj->curve.texture.knot;
- nknots = texture_knot->nknots = nobj->curve.texture.knot_count;
- order = texture_knot->order = nobj->curve.texture.order;
- texture_knot->delta_nknots = 0;
- t_min = texture_knot->t_min = order - 1;
- t_max = texture_knot->t_max = nknots - order;
- if (fabs(knot[t_min] - knot[t_max]) < EPSILON) {
- call_user_error(nobj, GLU_NURBS_ERROR3);
- return GLU_ERROR;
- }
- if (fabs(knot[0] - knot[t_min]) < EPSILON) {
- /* knot open at beggining */
- texture_knot->open_at_begin = GL_TRUE;
- }
- else
- texture_knot->open_at_begin = GL_FALSE;
- if (fabs(knot[t_max] - knot[nknots - 1]) < EPSILON) {
- /* knot open at end */
- texture_knot->open_at_end = GL_TRUE;
- }
- else
- texture_knot->open_at_end = GL_FALSE;
- }
- else
- texture_knot->unified_knot = NULL;
- return GLU_NO_ERROR;
-}
-
-/* covert the NURBS curve into a series of adjacent Bezier curves */
-static GLenum
-convert_curve(knot_str_type * the_knot, curve_attribs * attrib,
- GLfloat ** new_ctrl, GLint * ncontrol)
-{
- GLenum err;
-
- if ((err = explode_knot(the_knot)) != GLU_NO_ERROR) {
- if (the_knot->unified_knot) {
- free(the_knot->unified_knot);
- the_knot->unified_knot = NULL;
- }
- return err;
- }
- if (the_knot->unified_knot) {
- free(the_knot->unified_knot);
- the_knot->unified_knot = NULL;
- }
- if ((err = calc_alphas(the_knot)) != GLU_NO_ERROR) {
- free(the_knot->new_knot);
- return err;
- }
- free(the_knot->new_knot);
- if ((err = calc_new_ctrl_pts(attrib->ctrlarray, attrib->stride, the_knot,
- attrib->dim, new_ctrl, ncontrol))
- != GLU_NO_ERROR) {
- free(the_knot->alpha);
- return err;
- }
- free(the_knot->alpha);
- return GLU_NO_ERROR;
-}
-
-/* covert curves - geometry and possible attribute ones into equivalent */
-/* sequence of adjacent Bezier curves */
-static GLenum
-convert_curves(GLUnurbsObj * nobj, GLfloat ** new_geom_ctrl,
- GLint * ncontrol, GLfloat ** new_color_ctrl,
- GLfloat ** new_normal_ctrl, GLfloat ** new_texture_ctrl)
-{
- knot_str_type geom_knot, color_knot, normal_knot, texture_knot;
- GLint junk;
- GLenum err;
-
- *new_color_ctrl = *new_normal_ctrl = *new_texture_ctrl = NULL;
-
- if (fill_knot_structures(nobj, &geom_knot, &color_knot, &normal_knot,
- &texture_knot) != GLU_NO_ERROR)
- return GLU_ERROR;
-
- /* unify knots - all knots should have the same number of working */
- /* ranges */
- if (
- (err =
- select_knot_working_range(nobj, &geom_knot, &color_knot, &normal_knot,
- &texture_knot)) != GLU_NO_ERROR) {
- return err;
- }
- /* convert the geometry curve */
- nobj->curve.geom.dim = get_curve_dim(nobj->curve.geom.type);
- if ((err = convert_curve(&geom_knot, &(nobj->curve.geom), new_geom_ctrl,
- ncontrol)) != GLU_NO_ERROR) {
- free_unified_knots(&geom_knot, &color_knot, &normal_knot,
- &texture_knot);
- call_user_error(nobj, err);
- return err;
- }
- /* if additional attributive curves are given convert them as well */
- if (color_knot.unified_knot) {
- nobj->curve.color.dim = get_curve_dim(nobj->curve.color.type);
- if ((err = convert_curve(&color_knot, &(nobj->curve.color),
- new_color_ctrl, &junk)) != GLU_NO_ERROR) {
- free_unified_knots(&geom_knot, &color_knot, &normal_knot,
- &texture_knot);
- free(*new_geom_ctrl);
- call_user_error(nobj, err);
- return err;
- }
- }
- if (normal_knot.unified_knot) {
- nobj->curve.normal.dim = get_curve_dim(nobj->curve.normal.type);
- if ((err = convert_curve(&normal_knot, &(nobj->curve.normal),
- new_normal_ctrl, &junk)) != GLU_NO_ERROR) {
- free_unified_knots(&geom_knot, &color_knot, &normal_knot,
- &texture_knot);
- free(*new_geom_ctrl);
- if (*new_color_ctrl)
- free(*new_color_ctrl);
- call_user_error(nobj, err);
- return err;
- }
- }
- if (texture_knot.unified_knot) {
- nobj->curve.texture.dim = get_curve_dim(nobj->curve.texture.type);
- if ((err = convert_curve(&texture_knot, &(nobj->curve.texture),
- new_texture_ctrl, &junk)) != GLU_NO_ERROR) {
- free_unified_knots(&geom_knot, &color_knot, &normal_knot,
- &texture_knot);
- free(*new_geom_ctrl);
- if (*new_color_ctrl)
- free(*new_color_ctrl);
- if (*new_normal_ctrl)
- free(*new_normal_ctrl);
- call_user_error(nobj, err);
- return err;
- }
- }
- return GLU_NO_ERROR;
-}
-
-/* main NURBS curve procedure */
-void
-do_nurbs_curve(GLUnurbsObj * nobj)
-{
- GLint geom_order, color_order = 0, normal_order = 0, texture_order = 0;
- GLenum geom_type;
- GLint n_ctrl;
- GLfloat *new_geom_ctrl, *new_color_ctrl, *new_normal_ctrl,
- *new_texture_ctrl;
- GLfloat *geom_ctrl = 0, *color_ctrl = 0, *normal_ctrl = 0, *texture_ctrl = 0;
- GLint *factors;
- GLint i, j;
- GLint geom_dim, color_dim = 0, normal_dim = 0, texture_dim = 0;
-
- /* test the user supplied data */
- if (test_nurbs_curves(nobj) != GLU_NO_ERROR)
- return;
-
- if (convert_curves(nobj, &new_geom_ctrl, &n_ctrl, &new_color_ctrl,
- &new_normal_ctrl, &new_texture_ctrl) != GLU_NO_ERROR)
- return;
-
- geom_order = nobj->curve.geom.order;
- geom_type = nobj->curve.geom.type;
- geom_dim = nobj->curve.geom.dim;
-
- if (glu_do_sampling_crv(nobj, new_geom_ctrl, n_ctrl, geom_order, geom_dim,
- &factors) != GLU_NO_ERROR) {
- free(new_geom_ctrl);
- if (new_color_ctrl)
- free(new_color_ctrl);
- if (new_normal_ctrl)
- free(new_normal_ctrl);
- if (new_texture_ctrl)
- free(new_texture_ctrl);
- return;
- }
- glEnable(geom_type);
- if (new_color_ctrl) {
- glEnable(nobj->curve.color.type);
- color_dim = nobj->curve.color.dim;
- color_ctrl = new_color_ctrl;
- color_order = nobj->curve.color.order;
- }
- if (new_normal_ctrl) {
- glEnable(nobj->curve.normal.type);
- normal_dim = nobj->curve.normal.dim;
- normal_ctrl = new_normal_ctrl;
- normal_order = nobj->curve.normal.order;
- }
- if (new_texture_ctrl) {
- glEnable(nobj->curve.texture.type);
- texture_dim = nobj->curve.texture.dim;
- texture_ctrl = new_texture_ctrl;
- texture_order = nobj->curve.texture.order;
- }
- for (i = 0, j = 0, geom_ctrl = new_geom_ctrl;
- i < n_ctrl; i += geom_order, j++, geom_ctrl += geom_order * geom_dim) {
- if (fine_culling_test_2D
- (nobj, geom_ctrl, geom_order, geom_dim, geom_dim)) {
- color_ctrl += color_order * color_dim;
- normal_ctrl += normal_order * normal_dim;
- texture_ctrl += texture_order * texture_dim;
- continue;
- }
- glMap1f(geom_type, 0.0, 1.0, geom_dim, geom_order, geom_ctrl);
- if (new_color_ctrl) {
- glMap1f(nobj->curve.color.type, 0.0, 1.0, color_dim,
- color_order, color_ctrl);
- color_ctrl += color_order * color_dim;
- }
- if (new_normal_ctrl) {
- glMap1f(nobj->curve.normal.type, 0.0, 1.0, normal_dim,
- normal_order, normal_ctrl);
- normal_ctrl += normal_order * normal_dim;
- }
- if (new_texture_ctrl) {
- glMap1f(nobj->curve.texture.type, 0.0, 1.0, texture_dim,
- texture_order, texture_ctrl);
- texture_ctrl += texture_order * texture_dim;
- }
- glMapGrid1f(factors[j], 0.0, 1.0);
- glEvalMesh1(GL_LINE, 0, factors[j]);
- }
- free(new_geom_ctrl);
- free(factors);
- if (new_color_ctrl)
- free(new_color_ctrl);
- if (new_normal_ctrl)
- free(new_normal_ctrl);
- if (new_texture_ctrl)
- free(new_texture_ctrl);
-}
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