-/* $Id: nurbs.c,v 1.2 1999/11/11 03:21:43 kendallb 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.c,v $
- * Revision 1.2 1999/11/11 03:21:43 kendallb
- *
- * . Updated GL/gl.h with GLCALLACKP and GLAPIENTRYP macros for compatibility
- * with the IBM VisualAge C++ compiler. Eventually some more code will be
- * needed in the headers to enable the reversal of (__stdcall*) to (*__stdcall)
- * for the IBM compilers, however we currently build using our own header files
- * that already handle this.
- *
- * . Changed instances of (GLCALLBACK*) to GLCALLBACKP for compatibility
- * with the IBM VisualAge C++ compiler in src-glu.
- *
- * . Misc cleanups for warnings generated with Watcom C++ in src-glu. Compiles
- * with 0 warnings now.
- *
- * . tess_hash.c: line 244 - Why is this function stubbed out? I removed the
- * code with a #if 0 to avoid a compiler warning, but it looks dangerous.
- *
- * Revision 1.1.1.1 1999/08/19 00:55:42 jtg
- * Imported sources
- *
- * Revision 1.14 1999/01/03 03:23:15 brianp
- * now using GLAPIENTRY and GLCALLBACK keywords (Ted Jump)
- *
- * Revision 1.13 1998/06/01 01:07:49 brianp
- * small update for Next/OpenStep from Alexander Mai
- *
- * Revision 1.12 1998/03/15 18:14:30 brianp
- * fixed a compiler cast warning
- *
- * Revision 1.11 1998/02/07 14:29:11 brianp
- * fixed casting problem in gluNurbsCallback, again
- *
- * Revision 1.10 1998/02/04 00:21:20 brianp
- * fixed cygnus compilation problem (Stephane Rehel)
- *
- * Revision 1.9 1998/01/16 03:35:26 brianp
- * fixed Windows compilation warnings (Theodore Jump)
- *
- * Revision 1.8 1997/09/17 01:51:48 brianp
- * changed glu*Callback() functions to match prototype in glu.h
- *
- * Revision 1.7 1997/07/24 01:28:44 brianp
- * changed precompiled header symbol from PCH to PC_HEADER
- *
- * Revision 1.6 1997/07/24 01:26:31 brianp
- * added CALLBACK keyword to gluNurbsCallback()
- *
- * Revision 1.5 1997/05/28 02:29:38 brianp
- * added support for precompiled headers (PCH), inserted APIENTRY keyword
- *
- * Revision 1.4 1997/05/27 03:17:22 brianp
- * minor clean-up
- *
- * Revision 1.3 1997/05/27 03:00:16 brianp
- * incorporated Bogdan's new NURBS code
- *
- * Revision 1.2 1996/09/27 23:11:23 brianp
- * ifdef'd out unimplemented trimmed 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.
*/
+
#ifdef PC_HEADER
#include "all.h"
#else
void
-call_user_error( GLUnurbsObj *nobj, GLenum error )
+call_user_error(GLUnurbsObj * nobj, GLenum error)
{
- nobj->error=error;
- if(nobj->error_callback != NULL) {
- (*(nobj->error_callback))(error);
- }
- else {
- printf("NURBS error %d %s\n", error, (char *) gluErrorString(error) );
- }
+ nobj->error = error;
+ if (nobj->error_callback != NULL) {
+ (*(nobj->error_callback)) (error);
+ }
+ else {
+ printf("NURBS error %d %s\n", error, (char *) gluErrorString(error));
+ }
}
-GLUnurbsObj * GLAPIENTRY gluNewNurbsRenderer( void )
+GLUnurbsObj *GLAPIENTRY
+gluNewNurbsRenderer(void)
{
GLUnurbsObj *n;
GLfloat tmp_viewport[4];
- GLint i,j;
+ GLint i, j;
- n = (GLUnurbsObj *) malloc( sizeof(GLUnurbsObj) );
+ n = (GLUnurbsObj *) malloc(sizeof(GLUnurbsObj));
if (n) {
/* init */
- n->culling=GL_FALSE;
- n->nurbs_type=GLU_NURBS_NONE;
- n->error=GLU_NO_ERROR;
- n->error_callback=NULL;
- n->auto_load_matrix=GL_TRUE;
- n->sampling_tolerance=50.0;
- n->parametric_tolerance=0.5;
+ n->culling = GL_FALSE;
+ n->nurbs_type = GLU_NURBS_NONE;
+ n->error = GLU_NO_ERROR;
+ n->error_callback = NULL;
+ n->auto_load_matrix = GL_TRUE;
+ n->sampling_tolerance = 50.0;
+ n->parametric_tolerance = 0.5;
n->u_step = n->v_step = 100;
n->sampling_method = GLU_PATH_LENGTH;
- n->display_mode=GLU_FILL;
+ n->display_mode = GLU_FILL;
/* in case the user doesn't supply the sampling matrices */
/* set projection and modelview to identity */
- for(i=0;i<4;i++)
- for(j=0;j<4;j++)
- if(i==j)
- {
- n->sampling_matrices.model[i*4+j]=1.0;
- n->sampling_matrices.proj[i*4+j]=1.0;
- }
- else
- {
- n->sampling_matrices.model[i*4+j]=0.0;
- n->sampling_matrices.proj[i*4+j]=0.0;
- }
+ for (i = 0; i < 4; i++)
+ for (j = 0; j < 4; j++)
+ if (i == j) {
+ n->sampling_matrices.model[i * 4 + j] = 1.0;
+ n->sampling_matrices.proj[i * 4 + j] = 1.0;
+ }
+ else {
+ n->sampling_matrices.model[i * 4 + j] = 0.0;
+ n->sampling_matrices.proj[i * 4 + j] = 0.0;
+ }
/* and set the viewport sampling matrix to current ciewport */
- glGetFloatv(GL_VIEWPORT,tmp_viewport);
- for(i=0;i<4;i++)
- n->sampling_matrices.viewport[i]=tmp_viewport[i];
- n->trim=NULL;
+ glGetFloatv(GL_VIEWPORT, tmp_viewport);
+ for (i = 0; i < 4; i++)
+ n->sampling_matrices.viewport[i] = tmp_viewport[i];
+ n->trim = NULL;
}
return n;
}
-void GLAPIENTRY gluDeleteNurbsRenderer( GLUnurbsObj *nobj )
+void GLAPIENTRY
+gluDeleteNurbsRenderer(GLUnurbsObj * nobj)
{
if (nobj) {
- free( nobj );
+ free(nobj);
}
}
-void GLAPIENTRY gluLoadSamplingMatrices( GLUnurbsObj *nobj,
- const GLfloat modelMatrix[16],
- const GLfloat projMatrix[16],
- const GLint viewport[4] )
+void GLAPIENTRY
+gluLoadSamplingMatrices(GLUnurbsObj * nobj,
+ const GLfloat modelMatrix[16],
+ const GLfloat projMatrix[16], const GLint viewport[4])
{
- GLint i;
-
- for(i=0;i<16;i++)
- {
- nobj->sampling_matrices.model[i]=modelMatrix[i];
- nobj->sampling_matrices.proj[i]=projMatrix[i];
- }
- for(i=0;i<4;i++)
- nobj->sampling_matrices.viewport[i]=viewport[i];
+ GLint i;
+
+ for (i = 0; i < 16; i++) {
+ nobj->sampling_matrices.model[i] = modelMatrix[i];
+ nobj->sampling_matrices.proj[i] = projMatrix[i];
+ }
+ for (i = 0; i < 4; i++)
+ nobj->sampling_matrices.viewport[i] = viewport[i];
}
-void GLAPIENTRY gluNurbsProperty( GLUnurbsObj *nobj, GLenum property, GLfloat value )
+void GLAPIENTRY
+gluNurbsProperty(GLUnurbsObj * nobj, GLenum property, GLfloat value)
{
GLenum val;
switch (property) {
- case GLU_SAMPLING_TOLERANCE:
- if(value <= 0.0)
- {
- call_user_error(nobj,GLU_INVALID_VALUE);
- return;
- }
- nobj->sampling_tolerance=value;
- break;
- case GLU_PARAMETRIC_TOLERANCE:
- if(value <= 0.0)
- {
- call_user_error(nobj,GLU_INVALID_VALUE);
- return;
- }
- nobj->parametric_tolerance=value;
- break;
- case GLU_U_STEP:
- if(value <= 0.0)
- {
- call_user_error(nobj,GLU_INVALID_VALUE);
- return;
- }
- nobj->u_step=(GLint)value;
- break;
- case GLU_V_STEP:
- if(value <= 0.0)
- {
- call_user_error(nobj,GLU_INVALID_VALUE);
- return;
- }
- nobj->v_step=(GLint)value;
- break;
- case GLU_SAMPLING_METHOD:
- val = (GLenum)value;
- if(val!=GLU_PATH_LENGTH && val!=GLU_PARAMETRIC_ERROR && val!=GLU_DOMAIN_DISTANCE)
- {
- call_user_error(nobj,GLU_INVALID_ENUM);
- return;
- }
- nobj->sampling_method=val;
- break;
- case GLU_DISPLAY_MODE:
- val=(GLenum)value;
- if(val!=GLU_FILL && val!=GLU_OUTLINE_POLYGON && val!=GLU_OUTLINE_PATCH)
- {
- call_user_error(nobj,GLU_INVALID_ENUM);
- return;
- }
- if(nobj->nurbs_type==GLU_NURBS_CURVE)
- {
- call_user_error(nobj,GLU_NURBS_ERROR26);
- return;
- }
- nobj->display_mode=val;
-if(val==GLU_OUTLINE_PATCH)
- fprintf(stderr,"NURBS, for the moment, can display only in POLYGON mode\n");
- break;
- case GLU_CULLING:
- val=(GLenum)value;
- if(val!=GL_TRUE && val!=GL_FALSE)
- {
- call_user_error(nobj,GLU_INVALID_ENUM);
- return;
- }
- nobj->culling = (GLboolean) value;
- break;
- case GLU_AUTO_LOAD_MATRIX:
- val=(GLenum)value;
- if(val!=GL_TRUE && val!=GL_FALSE)
- {
- call_user_error(nobj,GLU_INVALID_ENUM);
- return;
- }
- nobj->auto_load_matrix = (GLboolean) value;
- break;
- default:
- call_user_error(nobj,GLU_NURBS_ERROR26);
+ case GLU_SAMPLING_TOLERANCE:
+ if (value <= 0.0) {
+ call_user_error(nobj, GLU_INVALID_VALUE);
+ return;
+ }
+ nobj->sampling_tolerance = value;
+ break;
+ case GLU_PARAMETRIC_TOLERANCE:
+ if (value <= 0.0) {
+ call_user_error(nobj, GLU_INVALID_VALUE);
+ return;
+ }
+ nobj->parametric_tolerance = value;
+ break;
+ case GLU_U_STEP:
+ if (value <= 0.0) {
+ call_user_error(nobj, GLU_INVALID_VALUE);
+ return;
+ }
+ nobj->u_step = (GLint) value;
+ break;
+ case GLU_V_STEP:
+ if (value <= 0.0) {
+ call_user_error(nobj, GLU_INVALID_VALUE);
+ return;
+ }
+ nobj->v_step = (GLint) value;
+ break;
+ case GLU_SAMPLING_METHOD:
+ val = (GLenum) value;
+ if (val != GLU_PATH_LENGTH && val != GLU_PARAMETRIC_ERROR
+ && val != GLU_DOMAIN_DISTANCE) {
+ call_user_error(nobj, GLU_INVALID_ENUM);
+ return;
+ }
+ nobj->sampling_method = val;
+ break;
+ case GLU_DISPLAY_MODE:
+ val = (GLenum) value;
+ if (val != GLU_FILL && val != GLU_OUTLINE_POLYGON
+ && val != GLU_OUTLINE_PATCH) {
+ call_user_error(nobj, GLU_INVALID_ENUM);
+ return;
+ }
+ if (nobj->nurbs_type == GLU_NURBS_CURVE) {
+ call_user_error(nobj, GLU_NURBS_ERROR26);
+ return;
+ }
+ nobj->display_mode = val;
+ if (val == GLU_OUTLINE_PATCH)
+ fprintf(stderr,
+ "NURBS, for the moment, can display only in POLYGON mode\n");
+ break;
+ case GLU_CULLING:
+ val = (GLenum) value;
+ if (val != GL_TRUE && val != GL_FALSE) {
+ call_user_error(nobj, GLU_INVALID_ENUM);
+ return;
+ }
+ nobj->culling = (GLboolean) value;
+ break;
+ case GLU_AUTO_LOAD_MATRIX:
+ val = (GLenum) value;
+ if (val != GL_TRUE && val != GL_FALSE) {
+ call_user_error(nobj, GLU_INVALID_ENUM);
+ return;
+ }
+ nobj->auto_load_matrix = (GLboolean) value;
+ break;
+ default:
+ call_user_error(nobj, GLU_NURBS_ERROR26);
}
}
-void GLAPIENTRY gluGetNurbsProperty( GLUnurbsObj *nobj, GLenum property, GLfloat *value )
+void GLAPIENTRY
+gluGetNurbsProperty(GLUnurbsObj * nobj, GLenum property, GLfloat * value)
{
switch (property) {
- case GLU_SAMPLING_TOLERANCE:
- *value = nobj->sampling_tolerance;
- break;
- case GLU_DISPLAY_MODE:
- *value = (GLfloat) (GLint) nobj->display_mode;
- break;
- case GLU_CULLING:
- *value = nobj->culling ? 1.0 : 0.0;
- break;
- case GLU_AUTO_LOAD_MATRIX:
- *value = nobj->auto_load_matrix ? 1.0 : 0.0;
- break;
- default:
- call_user_error(nobj,GLU_INVALID_ENUM);
+ case GLU_SAMPLING_TOLERANCE:
+ *value = nobj->sampling_tolerance;
+ break;
+ case GLU_DISPLAY_MODE:
+ *value = (GLfloat) (GLint) nobj->display_mode;
+ break;
+ case GLU_CULLING:
+ *value = nobj->culling ? 1.0 : 0.0;
+ break;
+ case GLU_AUTO_LOAD_MATRIX:
+ *value = nobj->auto_load_matrix ? 1.0 : 0.0;
+ break;
+ default:
+ call_user_error(nobj, GLU_INVALID_ENUM);
}
}
-void GLAPIENTRY gluBeginCurve( GLUnurbsObj *nobj )
+void GLAPIENTRY
+gluBeginCurve(GLUnurbsObj * nobj)
{
- if(nobj->nurbs_type==GLU_NURBS_CURVE)
- {
- call_user_error(nobj,GLU_NURBS_ERROR6);
- return;
- }
- nobj->nurbs_type=GLU_NURBS_CURVE;
- nobj->curve.geom.type=GLU_INVALID_ENUM;
- nobj->curve.color.type=GLU_INVALID_ENUM;
- nobj->curve.texture.type=GLU_INVALID_ENUM;
- nobj->curve.normal.type=GLU_INVALID_ENUM;
+ if (nobj->nurbs_type == GLU_NURBS_CURVE) {
+ call_user_error(nobj, GLU_NURBS_ERROR6);
+ return;
+ }
+ nobj->nurbs_type = GLU_NURBS_CURVE;
+ nobj->curve.geom.type = GLU_INVALID_ENUM;
+ nobj->curve.color.type = GLU_INVALID_ENUM;
+ nobj->curve.texture.type = GLU_INVALID_ENUM;
+ nobj->curve.normal.type = GLU_INVALID_ENUM;
}
-void GLAPIENTRY gluEndCurve( GLUnurbsObj * nobj )
+void GLAPIENTRY
+gluEndCurve(GLUnurbsObj * nobj)
{
- if(nobj->nurbs_type==GLU_NURBS_NONE)
- {
- call_user_error(nobj,GLU_NURBS_ERROR7);
- return;
- }
- if(nobj->curve.geom.type==GLU_INVALID_ENUM)
- {
- call_user_error(nobj,GLU_NURBS_ERROR8);
- nobj->nurbs_type=GLU_NURBS_NONE;
- return;
- }
- glPushAttrib( (GLbitfield) (GL_EVAL_BIT | GL_ENABLE_BIT) );
- glDisable(GL_MAP1_VERTEX_3);
- glDisable(GL_MAP1_VERTEX_4);
- glDisable(GL_MAP1_INDEX);
- glDisable(GL_MAP1_COLOR_4);
- glDisable(GL_MAP1_NORMAL);
- glDisable(GL_MAP1_TEXTURE_COORD_1);
- glDisable(GL_MAP1_TEXTURE_COORD_2);
- glDisable(GL_MAP1_TEXTURE_COORD_3);
- glDisable(GL_MAP1_TEXTURE_COORD_4);
- glDisable(GL_MAP2_VERTEX_3);
- glDisable(GL_MAP2_VERTEX_4);
- glDisable(GL_MAP2_INDEX);
- glDisable(GL_MAP2_COLOR_4);
- glDisable(GL_MAP2_NORMAL);
- glDisable(GL_MAP2_TEXTURE_COORD_1);
- glDisable(GL_MAP2_TEXTURE_COORD_2);
- glDisable(GL_MAP2_TEXTURE_COORD_3);
- glDisable(GL_MAP2_TEXTURE_COORD_4);
- do_nurbs_curve(nobj);
- glPopAttrib();
- nobj->nurbs_type=GLU_NURBS_NONE;
+ if (nobj->nurbs_type == GLU_NURBS_NONE) {
+ call_user_error(nobj, GLU_NURBS_ERROR7);
+ return;
+ }
+ if (nobj->curve.geom.type == GLU_INVALID_ENUM) {
+ call_user_error(nobj, GLU_NURBS_ERROR8);
+ nobj->nurbs_type = GLU_NURBS_NONE;
+ return;
+ }
+ glPushAttrib((GLbitfield) (GL_EVAL_BIT | GL_ENABLE_BIT));
+ glDisable(GL_MAP1_VERTEX_3);
+ glDisable(GL_MAP1_VERTEX_4);
+ glDisable(GL_MAP1_INDEX);
+ glDisable(GL_MAP1_COLOR_4);
+ glDisable(GL_MAP1_NORMAL);
+ glDisable(GL_MAP1_TEXTURE_COORD_1);
+ glDisable(GL_MAP1_TEXTURE_COORD_2);
+ glDisable(GL_MAP1_TEXTURE_COORD_3);
+ glDisable(GL_MAP1_TEXTURE_COORD_4);
+ glDisable(GL_MAP2_VERTEX_3);
+ glDisable(GL_MAP2_VERTEX_4);
+ glDisable(GL_MAP2_INDEX);
+ glDisable(GL_MAP2_COLOR_4);
+ glDisable(GL_MAP2_NORMAL);
+ glDisable(GL_MAP2_TEXTURE_COORD_1);
+ glDisable(GL_MAP2_TEXTURE_COORD_2);
+ glDisable(GL_MAP2_TEXTURE_COORD_3);
+ glDisable(GL_MAP2_TEXTURE_COORD_4);
+ do_nurbs_curve(nobj);
+ glPopAttrib();
+ nobj->nurbs_type = GLU_NURBS_NONE;
}
-void GLAPIENTRY gluNurbsCurve( GLUnurbsObj *nobj, GLint nknots, GLfloat *knot,
- GLint stride, GLfloat *ctlarray, GLint order, GLenum type )
+void GLAPIENTRY
+gluNurbsCurve(GLUnurbsObj * nobj, GLint nknots, GLfloat * knot,
+ GLint stride, GLfloat * ctlarray, GLint order, GLenum type)
{
- if(nobj->nurbs_type==GLU_NURBS_TRIM)
- {
+ if (nobj->nurbs_type == GLU_NURBS_TRIM) {
#if 0
/* TODO: NOT IMPLEMENTED YET */
- nurbs_trim *ptr1;
- trim_list *ptr2;
-
- if(type!=GLU_MAP1_TRIM_2 && type!=GLU_MAP1_TRIM_3)
- {
- call_user_error(nobj,GLU_NURBS_ERROR14);
- return;
- }
- for(ptr1=nobj->trim;ptr1->next;ptr1=ptr1->next);
- if(ptr1->trim_loop)
- {
- for(ptr2=ptr1->trim_loop;ptr2->next;ptr2=ptr2->next);
- if((ptr2->next=(trim_list *)malloc(sizeof(trim_list)))==NULL)
- {
- call_user_error(nobj,GLU_OUT_OF_MEMORY);
- return;
- }
- ptr2=ptr2->next;
- }
- else
- {
- if((ptr2=(trim_list *)malloc(sizeof(trim_list)))==NULL)
- {
- call_user_error(nobj,GLU_OUT_OF_MEMORY);
- return;
- }
- ptr1->trim_loop=ptr2;
- }
- ptr2->trim_type=GLU_TRIM_NURBS;
- ptr2->curve.nurbs_curve.knot_count=nknots;
- ptr2->curve.nurbs_curve.knot=knot;
- ptr2->curve.nurbs_curve.stride=stride;
- ptr2->curve.nurbs_curve.ctrlarray=ctlarray;
- ptr2->curve.nurbs_curve.order=order;
- ptr2->curve.nurbs_curve.dim= (type==GLU_MAP1_TRIM_2 ? 2 : 3 );
- ptr2->curve.nurbs_curve.type=type;
- ptr2->next=NULL;
+ nurbs_trim *ptr1;
+ trim_list *ptr2;
+
+ if (type != GLU_MAP1_TRIM_2 && type != GLU_MAP1_TRIM_3) {
+ call_user_error(nobj, GLU_NURBS_ERROR14);
+ return;
+ }
+ for (ptr1 = nobj->trim; ptr1->next; ptr1 = ptr1->next);
+ if (ptr1->trim_loop) {
+ for (ptr2 = ptr1->trim_loop; ptr2->next; ptr2 = ptr2->next);
+ if ((ptr2->next = (trim_list *) malloc(sizeof(trim_list))) == NULL) {
+ call_user_error(nobj, GLU_OUT_OF_MEMORY);
+ return;
+ }
+ ptr2 = ptr2->next;
+ }
+ else {
+ if ((ptr2 = (trim_list *) malloc(sizeof(trim_list))) == NULL) {
+ call_user_error(nobj, GLU_OUT_OF_MEMORY);
+ return;
+ }
+ ptr1->trim_loop = ptr2;
+ }
+ ptr2->trim_type = GLU_TRIM_NURBS;
+ ptr2->curve.nurbs_curve.knot_count = nknots;
+ ptr2->curve.nurbs_curve.knot = knot;
+ ptr2->curve.nurbs_curve.stride = stride;
+ ptr2->curve.nurbs_curve.ctrlarray = ctlarray;
+ ptr2->curve.nurbs_curve.order = order;
+ ptr2->curve.nurbs_curve.dim = (type == GLU_MAP1_TRIM_2 ? 2 : 3);
+ ptr2->curve.nurbs_curve.type = type;
+ ptr2->next = NULL;
#endif
- }
- else
- {
- if(type==GLU_MAP1_TRIM_2 || type==GLU_MAP1_TRIM_3)
- {
- call_user_error(nobj,GLU_NURBS_ERROR22);
- return;
- }
- if(nobj->nurbs_type!=GLU_NURBS_CURVE)
- {
- call_user_error(nobj,GLU_NURBS_ERROR10);
- return;
- }
- switch(type)
- {
- case GL_MAP1_VERTEX_3:
- case GL_MAP1_VERTEX_4:
- if(nobj->curve.geom.type!=GLU_INVALID_ENUM)
- {
- call_user_error(nobj,GLU_NURBS_ERROR8);
- return;
- }
- nobj->curve.geom.type=type;
- nobj->curve.geom.knot_count=nknots;
- nobj->curve.geom.knot=knot;
- nobj->curve.geom.stride=stride;
- nobj->curve.geom.ctrlarray=ctlarray;
- nobj->curve.geom.order=order;
- break;
- case GL_MAP1_INDEX:
- case GL_MAP1_COLOR_4:
- nobj->curve.color.type=type;
- nobj->curve.color.knot_count=nknots;
- nobj->curve.color.knot=knot;
- nobj->curve.color.stride=stride;
- nobj->curve.color.ctrlarray=ctlarray;
- nobj->curve.color.order=order;
- break;
- case GL_MAP1_NORMAL:
- nobj->curve.normal.type=type;
- nobj->curve.normal.knot_count=nknots;
- nobj->curve.normal.knot=knot;
- nobj->curve.normal.stride=stride;
- nobj->curve.normal.ctrlarray=ctlarray;
- nobj->curve.normal.order=order;
- break;
- case GL_MAP1_TEXTURE_COORD_1:
- case GL_MAP1_TEXTURE_COORD_2:
- case GL_MAP1_TEXTURE_COORD_3:
- case GL_MAP1_TEXTURE_COORD_4:
- nobj->curve.texture.type=type;
- nobj->curve.texture.knot_count=nknots;
- nobj->curve.texture.knot=knot;
- nobj->curve.texture.stride=stride;
- nobj->curve.texture.ctrlarray=ctlarray;
- nobj->curve.texture.order=order;
- break;
- default:
- call_user_error(nobj,GLU_INVALID_ENUM);
- }
- }
+ }
+ else {
+ if (type == GLU_MAP1_TRIM_2 || type == GLU_MAP1_TRIM_3) {
+ call_user_error(nobj, GLU_NURBS_ERROR22);
+ return;
+ }
+ if (nobj->nurbs_type != GLU_NURBS_CURVE) {
+ call_user_error(nobj, GLU_NURBS_ERROR10);
+ return;
+ }
+ switch (type) {
+ case GL_MAP1_VERTEX_3:
+ case GL_MAP1_VERTEX_4:
+ if (nobj->curve.geom.type != GLU_INVALID_ENUM) {
+ call_user_error(nobj, GLU_NURBS_ERROR8);
+ return;
+ }
+ nobj->curve.geom.type = type;
+ nobj->curve.geom.knot_count = nknots;
+ nobj->curve.geom.knot = knot;
+ nobj->curve.geom.stride = stride;
+ nobj->curve.geom.ctrlarray = ctlarray;
+ nobj->curve.geom.order = order;
+ break;
+ case GL_MAP1_INDEX:
+ case GL_MAP1_COLOR_4:
+ nobj->curve.color.type = type;
+ nobj->curve.color.knot_count = nknots;
+ nobj->curve.color.knot = knot;
+ nobj->curve.color.stride = stride;
+ nobj->curve.color.ctrlarray = ctlarray;
+ nobj->curve.color.order = order;
+ break;
+ case GL_MAP1_NORMAL:
+ nobj->curve.normal.type = type;
+ nobj->curve.normal.knot_count = nknots;
+ nobj->curve.normal.knot = knot;
+ nobj->curve.normal.stride = stride;
+ nobj->curve.normal.ctrlarray = ctlarray;
+ nobj->curve.normal.order = order;
+ break;
+ case GL_MAP1_TEXTURE_COORD_1:
+ case GL_MAP1_TEXTURE_COORD_2:
+ case GL_MAP1_TEXTURE_COORD_3:
+ case GL_MAP1_TEXTURE_COORD_4:
+ nobj->curve.texture.type = type;
+ nobj->curve.texture.knot_count = nknots;
+ nobj->curve.texture.knot = knot;
+ nobj->curve.texture.stride = stride;
+ nobj->curve.texture.ctrlarray = ctlarray;
+ nobj->curve.texture.order = order;
+ break;
+ default:
+ call_user_error(nobj, GLU_INVALID_ENUM);
+ }
+ }
}
-void GLAPIENTRY gluBeginSurface( GLUnurbsObj *nobj )
+void GLAPIENTRY
+gluBeginSurface(GLUnurbsObj * nobj)
{
- switch(nobj->nurbs_type)
- {
- case GLU_NURBS_NONE:
- nobj->nurbs_type=GLU_NURBS_SURFACE;
- nobj->surface.geom.type=GLU_INVALID_ENUM;
- nobj->surface.color.type=GLU_INVALID_ENUM;
- nobj->surface.texture.type=GLU_INVALID_ENUM;
- nobj->surface.normal.type=GLU_INVALID_ENUM;
- break;
- case GLU_NURBS_TRIM:
- call_user_error(nobj,GLU_NURBS_ERROR16);
- break;
- case GLU_NURBS_SURFACE:
- case GLU_NURBS_NO_TRIM:
- case GLU_NURBS_TRIM_DONE:
- call_user_error(nobj,GLU_NURBS_ERROR27);
- break;
- case GLU_NURBS_CURVE:
- call_user_error(nobj,GLU_NURBS_ERROR6);
- break;
- }
+ switch (nobj->nurbs_type) {
+ case GLU_NURBS_NONE:
+ nobj->nurbs_type = GLU_NURBS_SURFACE;
+ nobj->surface.geom.type = GLU_INVALID_ENUM;
+ nobj->surface.color.type = GLU_INVALID_ENUM;
+ nobj->surface.texture.type = GLU_INVALID_ENUM;
+ nobj->surface.normal.type = GLU_INVALID_ENUM;
+ break;
+ case GLU_NURBS_TRIM:
+ call_user_error(nobj, GLU_NURBS_ERROR16);
+ break;
+ case GLU_NURBS_SURFACE:
+ case GLU_NURBS_NO_TRIM:
+ case GLU_NURBS_TRIM_DONE:
+ call_user_error(nobj, GLU_NURBS_ERROR27);
+ break;
+ case GLU_NURBS_CURVE:
+ call_user_error(nobj, GLU_NURBS_ERROR6);
+ break;
+ }
}
-void GLAPIENTRY gluEndSurface( GLUnurbsObj * nobj )
+void GLAPIENTRY
+gluEndSurface(GLUnurbsObj * nobj)
{
- switch(nobj->nurbs_type)
- {
- case GLU_NURBS_NONE:
- call_user_error(nobj,GLU_NURBS_ERROR13);
- break;
- case GLU_NURBS_TRIM:
- call_user_error(nobj,GLU_NURBS_ERROR12);
- break;
- case GLU_NURBS_TRIM_DONE:
+ switch (nobj->nurbs_type) {
+ case GLU_NURBS_NONE:
+ call_user_error(nobj, GLU_NURBS_ERROR13);
+ break;
+ case GLU_NURBS_TRIM:
+ call_user_error(nobj, GLU_NURBS_ERROR12);
+ break;
+ case GLU_NURBS_TRIM_DONE:
/* if(nobj->trim->trim_loop==NULL)
{
call_user_error(nobj,GLU_NURBS_ERROR18);
return;
}*/
- /* no break - fallthrough */
- case GLU_NURBS_NO_TRIM:
- glPushAttrib( (GLbitfield)
- (GL_EVAL_BIT | GL_ENABLE_BIT | GL_POLYGON_BIT) );
- glDisable(GL_MAP2_VERTEX_3);
- glDisable(GL_MAP2_VERTEX_4);
- glDisable(GL_MAP2_INDEX);
- glDisable(GL_MAP2_COLOR_4);
- glDisable(GL_MAP2_NORMAL);
- glDisable(GL_MAP2_TEXTURE_COORD_1);
- glDisable(GL_MAP2_TEXTURE_COORD_2);
- glDisable(GL_MAP2_TEXTURE_COORD_3);
- glDisable(GL_MAP2_TEXTURE_COORD_4);
+ /* no break - fallthrough */
+ case GLU_NURBS_NO_TRIM:
+ glPushAttrib((GLbitfield)
+ (GL_EVAL_BIT | GL_ENABLE_BIT | GL_POLYGON_BIT));
+ glDisable(GL_MAP2_VERTEX_3);
+ glDisable(GL_MAP2_VERTEX_4);
+ glDisable(GL_MAP2_INDEX);
+ glDisable(GL_MAP2_COLOR_4);
+ glDisable(GL_MAP2_NORMAL);
+ glDisable(GL_MAP2_TEXTURE_COORD_1);
+ glDisable(GL_MAP2_TEXTURE_COORD_2);
+ glDisable(GL_MAP2_TEXTURE_COORD_3);
+ glDisable(GL_MAP2_TEXTURE_COORD_4);
/* glDisable(GL_MAP1_VERTEX_3);
glDisable(GL_MAP1_VERTEX_4);
glDisable(GL_MAP1_INDEX);
glDisable(GL_MAP1_TEXTURE_COORD_2);
glDisable(GL_MAP1_TEXTURE_COORD_3);
glDisable(GL_MAP1_TEXTURE_COORD_4);*/
- do_nurbs_surface(nobj);
- glPopAttrib();
- break;
- default:
- call_user_error(nobj,GLU_NURBS_ERROR8);
- }
- nobj->nurbs_type=GLU_NURBS_NONE;
+ do_nurbs_surface(nobj);
+ glPopAttrib();
+ break;
+ default:
+ call_user_error(nobj, GLU_NURBS_ERROR8);
+ }
+ nobj->nurbs_type = GLU_NURBS_NONE;
}
-void GLAPIENTRY gluNurbsSurface( GLUnurbsObj *nobj,
- GLint sknot_count, GLfloat *sknot,
- GLint tknot_count, GLfloat *tknot,
- GLint s_stride, GLint t_stride,
- GLfloat *ctrlarray,
- GLint sorder, GLint torder,
- GLenum type )
+void GLAPIENTRY
+gluNurbsSurface(GLUnurbsObj * nobj,
+ GLint sknot_count, GLfloat * sknot,
+ GLint tknot_count, GLfloat * tknot,
+ GLint s_stride, GLint t_stride,
+ GLfloat * ctrlarray, GLint sorder, GLint torder, GLenum type)
{
- if(nobj->nurbs_type==GLU_NURBS_NO_TRIM || nobj->nurbs_type==GLU_NURBS_TRIM ||
- nobj->nurbs_type==GLU_NURBS_TRIM_DONE)
- {
- if(type==GL_MAP2_VERTEX_3 || type==GL_MAP2_VERTEX_4)
- {
- call_user_error(nobj,GLU_NURBS_ERROR8);
- return;
- }
- }
- else
- if(nobj->nurbs_type!=GLU_NURBS_SURFACE)
- {
- call_user_error(nobj,GLU_NURBS_ERROR11);
- return;
- }
- switch(type)
- {
- case GL_MAP2_VERTEX_3:
- case GL_MAP2_VERTEX_4:
- nobj->surface.geom.sknot_count=sknot_count;
- nobj->surface.geom.sknot=sknot;
- nobj->surface.geom.tknot_count=tknot_count;
- nobj->surface.geom.tknot=tknot;
- nobj->surface.geom.s_stride=s_stride;
- nobj->surface.geom.t_stride=t_stride;
- nobj->surface.geom.ctrlarray=ctrlarray;
- nobj->surface.geom.sorder=sorder;
- nobj->surface.geom.torder=torder;
- nobj->surface.geom.type=type;
- nobj->nurbs_type=GLU_NURBS_NO_TRIM;
- break;
- case GL_MAP2_INDEX:
- case GL_MAP2_COLOR_4:
- nobj->surface.color.sknot_count=sknot_count;
- nobj->surface.color.sknot=sknot;
- nobj->surface.color.tknot_count=tknot_count;
- nobj->surface.color.tknot=tknot;
- nobj->surface.color.s_stride=s_stride;
- nobj->surface.color.t_stride=t_stride;
- nobj->surface.color.ctrlarray=ctrlarray;
- nobj->surface.color.sorder=sorder;
- nobj->surface.color.torder=torder;
- nobj->surface.color.type=type;
- break;
- case GL_MAP2_NORMAL:
- nobj->surface.normal.sknot_count=sknot_count;
- nobj->surface.normal.sknot=sknot;
- nobj->surface.normal.tknot_count=tknot_count;
- nobj->surface.normal.tknot=tknot;
- nobj->surface.normal.s_stride=s_stride;
- nobj->surface.normal.t_stride=t_stride;
- nobj->surface.normal.ctrlarray=ctrlarray;
- nobj->surface.normal.sorder=sorder;
- nobj->surface.normal.torder=torder;
- nobj->surface.normal.type=type;
- break;
- case GL_MAP2_TEXTURE_COORD_1:
- case GL_MAP2_TEXTURE_COORD_2:
- case GL_MAP2_TEXTURE_COORD_3:
- case GL_MAP2_TEXTURE_COORD_4:
- nobj->surface.texture.sknot_count=sknot_count;
- nobj->surface.texture.sknot=sknot;
- nobj->surface.texture.tknot_count=tknot_count;
- nobj->surface.texture.tknot=tknot;
- nobj->surface.texture.s_stride=s_stride;
- nobj->surface.texture.t_stride=t_stride;
- nobj->surface.texture.ctrlarray=ctrlarray;
- nobj->surface.texture.sorder=sorder;
- nobj->surface.texture.torder=torder;
- nobj->surface.texture.type=type;
- break;
- default:
- call_user_error(nobj,GLU_INVALID_ENUM);
- }
+ if (nobj->nurbs_type == GLU_NURBS_NO_TRIM
+ || nobj->nurbs_type == GLU_NURBS_TRIM
+ || nobj->nurbs_type == GLU_NURBS_TRIM_DONE) {
+ if (type == GL_MAP2_VERTEX_3 || type == GL_MAP2_VERTEX_4) {
+ call_user_error(nobj, GLU_NURBS_ERROR8);
+ return;
+ }
+ }
+ else if (nobj->nurbs_type != GLU_NURBS_SURFACE) {
+ call_user_error(nobj, GLU_NURBS_ERROR11);
+ return;
+ }
+ switch (type) {
+ case GL_MAP2_VERTEX_3:
+ case GL_MAP2_VERTEX_4:
+ nobj->surface.geom.sknot_count = sknot_count;
+ nobj->surface.geom.sknot = sknot;
+ nobj->surface.geom.tknot_count = tknot_count;
+ nobj->surface.geom.tknot = tknot;
+ nobj->surface.geom.s_stride = s_stride;
+ nobj->surface.geom.t_stride = t_stride;
+ nobj->surface.geom.ctrlarray = ctrlarray;
+ nobj->surface.geom.sorder = sorder;
+ nobj->surface.geom.torder = torder;
+ nobj->surface.geom.type = type;
+ nobj->nurbs_type = GLU_NURBS_NO_TRIM;
+ break;
+ case GL_MAP2_INDEX:
+ case GL_MAP2_COLOR_4:
+ nobj->surface.color.sknot_count = sknot_count;
+ nobj->surface.color.sknot = sknot;
+ nobj->surface.color.tknot_count = tknot_count;
+ nobj->surface.color.tknot = tknot;
+ nobj->surface.color.s_stride = s_stride;
+ nobj->surface.color.t_stride = t_stride;
+ nobj->surface.color.ctrlarray = ctrlarray;
+ nobj->surface.color.sorder = sorder;
+ nobj->surface.color.torder = torder;
+ nobj->surface.color.type = type;
+ break;
+ case GL_MAP2_NORMAL:
+ nobj->surface.normal.sknot_count = sknot_count;
+ nobj->surface.normal.sknot = sknot;
+ nobj->surface.normal.tknot_count = tknot_count;
+ nobj->surface.normal.tknot = tknot;
+ nobj->surface.normal.s_stride = s_stride;
+ nobj->surface.normal.t_stride = t_stride;
+ nobj->surface.normal.ctrlarray = ctrlarray;
+ nobj->surface.normal.sorder = sorder;
+ nobj->surface.normal.torder = torder;
+ nobj->surface.normal.type = type;
+ break;
+ case GL_MAP2_TEXTURE_COORD_1:
+ case GL_MAP2_TEXTURE_COORD_2:
+ case GL_MAP2_TEXTURE_COORD_3:
+ case GL_MAP2_TEXTURE_COORD_4:
+ nobj->surface.texture.sknot_count = sknot_count;
+ nobj->surface.texture.sknot = sknot;
+ nobj->surface.texture.tknot_count = tknot_count;
+ nobj->surface.texture.tknot = tknot;
+ nobj->surface.texture.s_stride = s_stride;
+ nobj->surface.texture.t_stride = t_stride;
+ nobj->surface.texture.ctrlarray = ctrlarray;
+ nobj->surface.texture.sorder = sorder;
+ nobj->surface.texture.torder = torder;
+ nobj->surface.texture.type = type;
+ break;
+ default:
+ call_user_error(nobj, GLU_INVALID_ENUM);
+ }
}
void GLAPIENTRY
-gluNurbsCallback( GLUnurbsObj *nobj, GLenum which, void (GLCALLBACKP fn)())
+gluNurbsCallback(GLUnurbsObj * nobj, GLenum which, void (GLCALLBACK * fn) ())
{
-#if defined(__CYGWIN32__) || defined(OPENSTEP)
- nobj->error_callback = (void(*)(GLenum))fn;
-#else
- nobj->error_callback = (void(GLCALLBACKP)(GLenum))fn;
-#endif
+ nobj->error_callback = (void (GLCALLBACKPCAST) (GLenum)) fn;
- if(which!=GLU_ERROR)
- call_user_error(nobj,GLU_INVALID_ENUM);
+ if (which != GLU_ERROR)
+ call_user_error(nobj, GLU_INVALID_ENUM);
}
void GLAPIENTRY
-gluBeginTrim( GLUnurbsObj *nobj )
+gluBeginTrim(GLUnurbsObj * nobj)
{
#if 0
- nurbs_trim *ptr;
+ nurbs_trim *ptr;
#endif
- if(nobj->nurbs_type!=GLU_NURBS_TRIM_DONE)
- if(nobj->nurbs_type!=GLU_NURBS_NO_TRIM)
- {
- call_user_error(nobj,GLU_NURBS_ERROR15);
- return;
- }
- nobj->nurbs_type=GLU_NURBS_TRIM;
-fprintf(stderr,"NURBS - trimming not supported yet\n");
+ if (nobj->nurbs_type != GLU_NURBS_TRIM_DONE)
+ if (nobj->nurbs_type != GLU_NURBS_NO_TRIM) {
+ call_user_error(nobj, GLU_NURBS_ERROR15);
+ return;
+ }
+ nobj->nurbs_type = GLU_NURBS_TRIM;
+ fprintf(stderr, "NURBS - trimming not supported yet\n");
#if 0
- if((ptr=(nurbs_trim *)malloc(sizeof(nurbs_trim)))==NULL)
- {
- call_user_error(nobj,GLU_OUT_OF_MEMORY);
- return;
- }
- if(nobj->trim)
- {
- nurbs_trim *tmp_ptr;
-
- for(tmp_ptr=nobj->trim;tmp_ptr->next;tmp_ptr=tmp_ptr->next);
- tmp_ptr->next=ptr;
- }
- else
- nobj->trim=ptr;
- ptr->trim_loop=NULL;
- ptr->segments=NULL;
- ptr->next=NULL;
+ if ((ptr = (nurbs_trim *) malloc(sizeof(nurbs_trim))) == NULL) {
+ call_user_error(nobj, GLU_OUT_OF_MEMORY);
+ return;
+ }
+ if (nobj->trim) {
+ nurbs_trim *tmp_ptr;
+
+ for (tmp_ptr = nobj->trim; tmp_ptr->next; tmp_ptr = tmp_ptr->next);
+ tmp_ptr->next = ptr;
+ }
+ else
+ nobj->trim = ptr;
+ ptr->trim_loop = NULL;
+ ptr->segments = NULL;
+ ptr->next = NULL;
#endif
}
void GLAPIENTRY
-gluPwlCurve( GLUnurbsObj *nobj, GLint count, GLfloat *array, GLint stride,
- GLenum type)
+gluPwlCurve(GLUnurbsObj * nobj, GLint count, GLfloat * array, GLint stride,
+ GLenum type)
{
#if 0
- nurbs_trim *ptr1;
- trim_list *ptr2;
+ nurbs_trim *ptr1;
+ trim_list *ptr2;
#endif
- if(nobj->nurbs_type==GLU_NURBS_CURVE)
- {
- call_user_error(nobj,GLU_NURBS_ERROR9);
- return;
- }
- if(nobj->nurbs_type==GLU_NURBS_NONE)
- {
- call_user_error(nobj,GLU_NURBS_ERROR19);
- return;
- }
- if(type!=GLU_MAP1_TRIM_2 && type!=GLU_MAP1_TRIM_3)
- {
- call_user_error(nobj,GLU_NURBS_ERROR14);
- return;
- }
+ if (nobj->nurbs_type == GLU_NURBS_CURVE) {
+ call_user_error(nobj, GLU_NURBS_ERROR9);
+ return;
+ }
+ if (nobj->nurbs_type == GLU_NURBS_NONE) {
+ call_user_error(nobj, GLU_NURBS_ERROR19);
+ return;
+ }
+ if (type != GLU_MAP1_TRIM_2 && type != GLU_MAP1_TRIM_3) {
+ call_user_error(nobj, GLU_NURBS_ERROR14);
+ return;
+ }
#if 0
- for(ptr1=nobj->trim;ptr1->next;ptr1=ptr1->next);
- if(ptr1->trim_loop)
- {
- for(ptr2=ptr1->trim_loop;ptr2->next;ptr2=ptr2->next);
- if((ptr2->next=(trim_list *)malloc(sizeof(trim_list)))==NULL)
- {
- call_user_error(nobj,GLU_OUT_OF_MEMORY);
- return;
- }
- ptr2=ptr2->next;
- }
- else
- {
- if((ptr2=(trim_list *)malloc(sizeof(trim_list)))==NULL)
- {
- call_user_error(nobj,GLU_OUT_OF_MEMORY);
- return;
- }
- ptr1->trim_loop=ptr2;
- }
- ptr2->trim_type=GLU_TRIM_PWL;
- ptr2->curve.pwl_curve.pt_count=count;
- ptr2->curve.pwl_curve.ctrlarray=array;
- ptr2->curve.pwl_curve.stride=stride;
- ptr2->curve.pwl_curve.dim= (type==GLU_MAP1_TRIM_2 ? 2 : 3 );
- ptr2->curve.pwl_curve.type=type;
- ptr2->next=NULL;
+ for (ptr1 = nobj->trim; ptr1->next; ptr1 = ptr1->next);
+ if (ptr1->trim_loop) {
+ for (ptr2 = ptr1->trim_loop; ptr2->next; ptr2 = ptr2->next);
+ if ((ptr2->next = (trim_list *) malloc(sizeof(trim_list))) == NULL) {
+ call_user_error(nobj, GLU_OUT_OF_MEMORY);
+ return;
+ }
+ ptr2 = ptr2->next;
+ }
+ else {
+ if ((ptr2 = (trim_list *) malloc(sizeof(trim_list))) == NULL) {
+ call_user_error(nobj, GLU_OUT_OF_MEMORY);
+ return;
+ }
+ ptr1->trim_loop = ptr2;
+ }
+ ptr2->trim_type = GLU_TRIM_PWL;
+ ptr2->curve.pwl_curve.pt_count = count;
+ ptr2->curve.pwl_curve.ctrlarray = array;
+ ptr2->curve.pwl_curve.stride = stride;
+ ptr2->curve.pwl_curve.dim = (type == GLU_MAP1_TRIM_2 ? 2 : 3);
+ ptr2->curve.pwl_curve.type = type;
+ ptr2->next = NULL;
#endif
}
void GLAPIENTRY
-gluEndTrim( GLUnurbsObj *nobj )
+gluEndTrim(GLUnurbsObj * nobj)
{
- if(nobj->nurbs_type!=GLU_NURBS_TRIM)
- {
- call_user_error(nobj,GLU_NURBS_ERROR17);
- return;
- }
- nobj->nurbs_type=GLU_NURBS_TRIM_DONE;
+ if (nobj->nurbs_type != GLU_NURBS_TRIM) {
+ call_user_error(nobj, GLU_NURBS_ERROR17);
+ return;
+ }
+ nobj->nurbs_type = GLU_NURBS_TRIM_DONE;
}
-
projects / mesa.git / blobdiff