-/* $Id: nurbs.h,v 1.1 1999/08/19 00:55:42 jtg Exp $ */
/*
* Mesa 3-D graphics library
- * Version: 3.1
- * Copyright (C) 1995-1999 Brian Paul
+ * 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
*/
-/*
- * $Log: nurbs.h,v $
- * Revision 1.1 1999/08/19 00:55:42 jtg
- * Initial revision
- *
- * Revision 1.5 1999/02/27 13:55:31 brianp
- * fixed BeOS-related GLU typedef problems
- *
- * Revision 1.4 1999/01/03 03:23:15 brianp
- * now using GLAPIENTRY and GLCALLBACK keywords (Ted Jump)
- *
- * Revision 1.3 1997/05/27 03:18:23 brianp
- * minor clean-up
- *
- * Revision 1.2 1997/05/27 03:00:16 brianp
- * incorporated Bogdan's new NURBS code
- *
- * Revision 1.1 1996/09/27 01:19:39 brianp
- * Initial revision
- *
- */
-
-
/*
* NURBS implementation written by Bogdan Sikorski (bogdan@cira.it)
* See README2 for more info.
#define NURBS_H
-#define EPSILON 1e-06 /* epsilon for double precision compares */
+#define EPSILON 1e-06 /* epsilon for double precision compares */
typedef enum
{
- GLU_NURBS_CURVE, GLU_NURBS_SURFACE, GLU_NURBS_TRIM, GLU_NURBS_NO_TRIM,
- GLU_NURBS_TRIM_DONE, GLU_NURBS_NONE
-} GLU_nurbs_enum;
+ GLU_NURBS_CURVE, GLU_NURBS_SURFACE, GLU_NURBS_TRIM, GLU_NURBS_NO_TRIM,
+ GLU_NURBS_TRIM_DONE, GLU_NURBS_NONE
+}
+GLU_nurbs_enum;
typedef enum
{
- GLU_TRIM_NURBS, GLU_TRIM_PWL
-} GLU_trim_enum;
+ GLU_TRIM_NURBS, GLU_TRIM_PWL
+}
+GLU_trim_enum;
typedef struct
{
- GLint sknot_count;
- GLfloat *sknot;
- GLint tknot_count;
- GLfloat *tknot;
- GLint s_stride;
- GLint t_stride;
- GLfloat *ctrlarray;
- GLint sorder;
- GLint torder;
- GLint dim;
- GLenum type;
-} surface_attribs;
+ GLint sknot_count;
+ GLfloat *sknot;
+ GLint tknot_count;
+ GLfloat *tknot;
+ GLint s_stride;
+ GLint t_stride;
+ GLfloat *ctrlarray;
+ GLint sorder;
+ GLint torder;
+ GLint dim;
+ GLenum type;
+}
+surface_attribs;
typedef struct
{
- surface_attribs geom;
- surface_attribs color;
- surface_attribs texture;
- surface_attribs normal;
-} nurbs_surface;
+ surface_attribs geom;
+ surface_attribs color;
+ surface_attribs texture;
+ surface_attribs normal;
+}
+nurbs_surface;
typedef struct
{
- GLint knot_count;
- GLfloat *knot;
- GLint stride;
- GLfloat *ctrlarray;
- GLint order;
- GLint dim;
- GLenum type;
-} curve_attribs;
+ GLint knot_count;
+ GLfloat *knot;
+ GLint stride;
+ GLfloat *ctrlarray;
+ GLint order;
+ GLint dim;
+ GLenum type;
+}
+curve_attribs;
typedef struct
{
- GLint pt_count;
- GLfloat *ctrlarray;
- GLint stride;
- GLint dim;
- GLenum type;
-} pwl_curve_attribs;
+ GLint pt_count;
+ GLfloat *ctrlarray;
+ GLint stride;
+ GLint dim;
+ GLenum type;
+}
+pwl_curve_attribs;
typedef struct
{
- curve_attribs geom;
- curve_attribs color;
- curve_attribs texture;
- curve_attribs normal;
-} nurbs_curve;
+ curve_attribs geom;
+ curve_attribs color;
+ curve_attribs texture;
+ curve_attribs normal;
+}
+nurbs_curve;
typedef struct trim_list_str
{
- GLU_trim_enum trim_type;
- union
- {
- pwl_curve_attribs pwl_curve;
- curve_attribs nurbs_curve;
- } curve;
- struct trim_list_str *next;
-} trim_list;
+ GLU_trim_enum trim_type;
+ union
+ {
+ pwl_curve_attribs pwl_curve;
+ curve_attribs nurbs_curve;
+ }
+ curve;
+ struct trim_list_str *next;
+}
+trim_list;
typedef struct seg_trim_str
{
- GLfloat *points;
- GLint pt_cnt,seg_array_len;
- struct seg_trim_str *next;
-} trim_segments;
+ GLfloat *points;
+ GLint pt_cnt, seg_array_len;
+ struct seg_trim_str *next;
+}
+trim_segments;
typedef struct nurbs_trim_str
{
- trim_list *trim_loop;
- trim_segments *segments;
- struct nurbs_trim_str *next;
-} nurbs_trim;
+ trim_list *trim_loop;
+ trim_segments *segments;
+ struct nurbs_trim_str *next;
+}
+nurbs_trim;
typedef struct
{
- GLfloat model[16],proj[16],viewport[4];
-} culling_and_sampling_str;
-
-struct GLUnurbs {
- GLboolean culling;
- GLenum error;
- void (GLCALLBACK *error_callback)( GLenum err );
- GLenum display_mode;
- GLU_nurbs_enum nurbs_type;
- GLboolean auto_load_matrix;
- culling_and_sampling_str
- sampling_matrices;
- GLenum sampling_method;
- GLfloat sampling_tolerance;
- GLfloat parametric_tolerance;
- GLint u_step, v_step;
- nurbs_surface surface;
- nurbs_curve curve;
- nurbs_trim *trim;
+ GLfloat model[16], proj[16], viewport[4];
+}
+culling_and_sampling_str;
+
+struct GLUnurbs
+{
+ GLboolean culling;
+ GLenum error;
+ void (GLCALLBACK * error_callback) (GLenum err);
+ GLenum display_mode;
+ GLU_nurbs_enum nurbs_type;
+ GLboolean auto_load_matrix;
+ culling_and_sampling_str sampling_matrices;
+ GLenum sampling_method;
+ GLfloat sampling_tolerance;
+ GLfloat parametric_tolerance;
+ GLint u_step, v_step;
+ nurbs_surface surface;
+ nurbs_curve curve;
+ nurbs_trim *trim;
};
typedef struct
{
- GLfloat *knot;
- GLint nknots;
- GLfloat *unified_knot;
- GLint unified_nknots;
- GLint order;
- GLint t_min,t_max;
- GLint delta_nknots;
- GLboolean open_at_begin,open_at_end;
- GLfloat *new_knot;
- GLfloat *alpha;
-} knot_str_type;
+ GLfloat *knot;
+ GLint nknots;
+ GLfloat *unified_knot;
+ GLint unified_nknots;
+ GLint order;
+ GLint t_min, t_max;
+ GLint delta_nknots;
+ GLboolean open_at_begin, open_at_end;
+ GLfloat *new_knot;
+ GLfloat *alpha;
+}
+knot_str_type;
typedef struct
{
- GLfloat *geom_ctrl;
- GLint geom_s_stride,geom_t_stride;
- GLfloat **geom_offsets;
- GLint geom_s_pt_cnt,geom_t_pt_cnt;
- GLfloat *color_ctrl;
- GLint color_s_stride,color_t_stride;
- GLfloat **color_offsets;
- GLint color_s_pt_cnt,color_t_pt_cnt;
- GLfloat *normal_ctrl;
- GLint normal_s_stride,normal_t_stride;
- GLfloat **normal_offsets;
- GLint normal_s_pt_cnt,normal_t_pt_cnt;
- GLfloat *texture_ctrl;
- GLint texture_s_stride,texture_t_stride;
- GLfloat **texture_offsets;
- GLint texture_s_pt_cnt,texture_t_pt_cnt;
- GLint s_bezier_cnt,t_bezier_cnt;
-} new_ctrl_type;
-
-extern void call_user_error( GLUnurbsObj *nobj, GLenum error );
-
-extern GLenum test_knot(GLint nknots, GLfloat *knot, GLint order);
-
-extern GLenum explode_knot(knot_str_type *the_knot);
-
-extern GLenum calc_alphas(knot_str_type *the_knot);
-
-extern GLenum calc_new_ctrl_pts(GLfloat *ctrl,GLint stride,knot_str_type *the_knot,
- GLint dim,GLfloat **new_ctrl,GLint *ncontrol);
-
-extern GLenum glu_do_sampling_crv(GLUnurbsObj *nobj, GLfloat *new_ctrl,GLint n_ctrl,
- GLint order,GLint dim,GLint **factors);
-
-extern GLenum glu_do_sampling_3D(GLUnurbsObj *nobj, new_ctrl_type *new_ctrl,
- int **sfactors, GLint **tfactors);
-
-extern GLenum glu_do_sampling_uv(GLUnurbsObj *nobj, new_ctrl_type *new_ctrl,
- int **sfactors, GLint **tfactors);
-
-extern GLenum glu_do_sampling_param_3D(GLUnurbsObj *nobj, new_ctrl_type *new_ctrl,
- int **sfactors, GLint **tfactors);
-
-extern GLboolean fine_culling_test_2D(GLUnurbsObj *nobj, GLfloat *ctrl, GLint n_ctrl,
- GLint stride, GLint dim);
-
-extern GLboolean fine_culling_test_3D(GLUnurbsObj *nobj, GLfloat *ctrl,
- GLint s_n_ctrl, GLint t_n_ctrl, GLint s_stride, GLint t_stride, GLint dim);
-
-extern void do_nurbs_curve( GLUnurbsObj *nobj);
-
-extern void do_nurbs_surface( GLUnurbsObj *nobj);
-
-extern GLenum patch_trimming(GLUnurbsObj *nobj,new_ctrl_type *new_ctrl,
- GLint *sfactors, GLint *tfactors);
-
-extern void collect_unified_knot(knot_str_type *dest, knot_str_type *src,
- GLfloat maximal_min_knot, GLfloat minimal_max_knot);
-
-extern GLenum select_knot_working_range(GLUnurbsObj *nobj,knot_str_type *geom_knot,
- knot_str_type *color_knot, knot_str_type *normal_knot,
- knot_str_type *texture_knot);
-
-extern void free_unified_knots(knot_str_type *geom_knot, knot_str_type *color_knot,
- knot_str_type *normal_knot, knot_str_type *texture_knot);
+ GLfloat *geom_ctrl;
+ GLint geom_s_stride, geom_t_stride;
+ GLfloat **geom_offsets;
+ GLint geom_s_pt_cnt, geom_t_pt_cnt;
+ GLfloat *color_ctrl;
+ GLint color_s_stride, color_t_stride;
+ GLfloat **color_offsets;
+ GLint color_s_pt_cnt, color_t_pt_cnt;
+ GLfloat *normal_ctrl;
+ GLint normal_s_stride, normal_t_stride;
+ GLfloat **normal_offsets;
+ GLint normal_s_pt_cnt, normal_t_pt_cnt;
+ GLfloat *texture_ctrl;
+ GLint texture_s_stride, texture_t_stride;
+ GLfloat **texture_offsets;
+ GLint texture_s_pt_cnt, texture_t_pt_cnt;
+ GLint s_bezier_cnt, t_bezier_cnt;
+}
+new_ctrl_type;
+
+extern void call_user_error(GLUnurbsObj * nobj, GLenum error);
+
+extern GLenum test_knot(GLint nknots, GLfloat * knot, GLint order);
+
+extern GLenum explode_knot(knot_str_type * the_knot);
+
+extern GLenum calc_alphas(knot_str_type * the_knot);
+
+extern GLenum calc_new_ctrl_pts(GLfloat * ctrl, GLint stride,
+ knot_str_type * the_knot, GLint dim,
+ GLfloat ** new_ctrl, GLint * ncontrol);
+
+extern GLenum glu_do_sampling_crv(GLUnurbsObj * nobj, GLfloat * new_ctrl,
+ GLint n_ctrl, GLint order, GLint dim,
+ GLint ** factors);
+
+extern GLenum glu_do_sampling_3D(GLUnurbsObj * nobj, new_ctrl_type * new_ctrl,
+ int **sfactors, GLint ** tfactors);
+
+extern GLenum glu_do_sampling_uv(GLUnurbsObj * nobj, new_ctrl_type * new_ctrl,
+ int **sfactors, GLint ** tfactors);
+
+extern GLenum glu_do_sampling_param_3D(GLUnurbsObj * nobj,
+ new_ctrl_type * new_ctrl,
+ int **sfactors, GLint ** tfactors);
+
+extern GLboolean fine_culling_test_2D(GLUnurbsObj * nobj, GLfloat * ctrl,
+ GLint n_ctrl, GLint stride, GLint dim);
+
+extern GLboolean fine_culling_test_3D(GLUnurbsObj * nobj, GLfloat * ctrl,
+ GLint s_n_ctrl, GLint t_n_ctrl,
+ GLint s_stride, GLint t_stride,
+ GLint dim);
+
+extern void do_nurbs_curve(GLUnurbsObj * nobj);
+
+extern void do_nurbs_surface(GLUnurbsObj * nobj);
+
+extern GLenum patch_trimming(GLUnurbsObj * nobj, new_ctrl_type * new_ctrl,
+ GLint * sfactors, GLint * tfactors);
+
+extern void collect_unified_knot(knot_str_type * dest, knot_str_type * src,
+ GLfloat maximal_min_knot,
+ GLfloat minimal_max_knot);
+
+extern GLenum select_knot_working_range(GLUnurbsObj * nobj,
+ knot_str_type * geom_knot,
+ knot_str_type * color_knot,
+ knot_str_type * normal_knot,
+ knot_str_type * texture_knot);
+
+extern void free_unified_knots(knot_str_type * geom_knot,
+ knot_str_type * color_knot,
+ knot_str_type * normal_knot,
+ knot_str_type * texture_knot);
projects / mesa.git / blobdiff