--- /dev/null
+/*
+** License Applicability. Except to the extent portions of this file are
+** made subject to an alternative license as permitted in the SGI Free
+** Software License B, Version 1.1 (the "License"), the contents of this
+** file are subject only to the provisions of the License. You may not use
+** this file except in compliance with the License. You may obtain a copy
+** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
+** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
+**
+** http://oss.sgi.com/projects/FreeB
+**
+** Note that, as provided in the License, the Software is distributed on an
+** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
+** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
+** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
+** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
+**
+** Original Code. The Original Code is: OpenGL Sample Implementation,
+** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
+** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
+** Copyright in any portions created by third parties is as indicated
+** elsewhere herein. All Rights Reserved.
+**
+** Additional Notice Provisions: The application programming interfaces
+** established by SGI in conjunction with the Original Code are The
+** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
+** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
+** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
+** Window System(R) (Version 1.3), released October 19, 1998. This software
+** was created using the OpenGL(R) version 1.2.1 Sample Implementation
+** published by SGI, but has not been independently verified as being
+** compliant with the OpenGL(R) version 1.2.1 Specification.
+*/
+
+/*
+ * glcurveval.c++
+ *
+ */
+
+/* Polynomial Evaluator Interface */
+
+#include "gluos.h"
+#include "glimports.h"
+#include "glrenderer.h"
+#include "glcurveval.h"
+#include "nurbsconsts.h"
+
+OpenGLCurveEvaluator::OpenGLCurveEvaluator(void)
+{
+ //no default callback functions
+ beginCallBackN = NULL;
+ endCallBackN = NULL;
+ vertexCallBackN = NULL;
+ normalCallBackN = NULL;
+ colorCallBackN = NULL;
+ texcoordCallBackN = NULL;
+ beginCallBackData = NULL;
+ endCallBackData = NULL;
+ vertexCallBackData = NULL;
+ normalCallBackData = NULL;
+ colorCallBackData = NULL;
+ texcoordCallBackData = NULL;
+
+ userData = NULL;
+
+ vertex_flag = 0;
+ normal_flag = 0;
+ color_flag = 0;
+ texcoord_flag = 0;
+
+ em_vertex.uprime = -1.0;
+ em_normal.uprime = -1.0;
+ em_color.uprime = -1.0;
+ em_texcoord.uprime = -1.0;
+ output_triangles = 0; // don't output triangles by default
+}
+
+OpenGLCurveEvaluator::~OpenGLCurveEvaluator(void)
+{
+}
+
+/* added nonsense to avoid the warning messages at compile time */
+void
+OpenGLCurveEvaluator::addMap(CurveMap *m)
+{
+ m = m;
+}
+
+void
+OpenGLCurveEvaluator::range1f(long type, REAL *from, REAL *to)
+{
+ type = type;
+ from = from;
+ to = to;
+}
+
+void
+OpenGLCurveEvaluator::domain1f(REAL ulo, REAL uhi)
+{
+ ulo = ulo;
+ uhi = uhi;
+}
+
+void
+OpenGLCurveEvaluator::bgnline(void)
+{
+ if(output_triangles)
+ beginCallBack(GL_LINE_STRIP, userData);
+ else
+ glBegin((GLenum) GL_LINE_STRIP);
+}
+
+void
+OpenGLCurveEvaluator::endline(void)
+{
+ if(output_triangles)
+ endCallBack(userData);
+ else
+ glEnd();
+}
+
+/*---------------------------------------------------------------------------
+ * disable - turn off a curve map
+ *---------------------------------------------------------------------------
+ */
+void
+OpenGLCurveEvaluator::disable(long type)
+{
+ glDisable((GLenum) type);
+}
+
+/*---------------------------------------------------------------------------
+ * enable - turn on a curve map
+ *---------------------------------------------------------------------------
+ */
+void
+OpenGLCurveEvaluator::enable(long type)
+{
+ glEnable((GLenum) type);
+}
+
+/*-------------------------------------------------------------------------
+ * mapgrid1f - define a lattice of points with origin and offset
+ *-------------------------------------------------------------------------
+ */
+void
+OpenGLCurveEvaluator::mapgrid1f(long nu, REAL u0, REAL u1)
+{
+ if(output_triangles)
+ {
+ global_grid_u0 = u0;
+ global_grid_u1 = u1;
+ global_grid_nu = (int) nu;
+ }
+ else
+ glMapGrid1f((GLint) nu, (GLfloat) u0, (GLfloat) u1);
+}
+
+/*-------------------------------------------------------------------------
+ * bgnmap1 - preamble to curve definition and evaluations
+ *-------------------------------------------------------------------------
+ */
+void
+OpenGLCurveEvaluator::bgnmap1f(long)
+{
+ if(output_triangles)
+ {
+ //initialized so that no maps are set initially
+ vertex_flag = 0;
+ normal_flag = 0;
+ color_flag = 0;
+ texcoord_flag = 0;
+ //no need to worry about gl states when doing callback
+ }
+ else
+ glPushAttrib((GLbitfield) GL_EVAL_BIT);
+}
+
+/*-------------------------------------------------------------------------
+ * endmap1 - postamble to a curve map
+ *-------------------------------------------------------------------------
+ */
+void
+OpenGLCurveEvaluator::endmap1f(void)
+{
+ if(output_triangles)
+ {
+
+ }
+ else
+ glPopAttrib();
+}
+
+/*-------------------------------------------------------------------------
+ * map1f - pass a desription of a curve map
+ *-------------------------------------------------------------------------
+ */
+void
+OpenGLCurveEvaluator::map1f(
+ long type, /* map type */
+ REAL ulo, /* lower parametric bound */
+ REAL uhi, /* upper parametric bound */
+ long stride, /* distance to next point in REALS */
+ long order, /* parametric order */
+ REAL *pts /* control points */
+)
+{
+ if(output_triangles)
+ {
+ int dimension = 0;
+ int which = 0;
+ switch(type){
+ case GL_MAP1_VERTEX_3:
+ which = 0;
+ dimension = 3;
+ break;
+ case GL_MAP1_VERTEX_4:
+ which=0;
+ dimension = 4;
+ break;
+ case GL_MAP1_INDEX:
+ which=2;
+ dimension = 1;
+ break;
+ case GL_MAP1_COLOR_4:
+ which=2;
+ dimension = 4;
+ break;
+ case GL_MAP1_NORMAL:
+ which=1;
+ dimension = 3;
+ break;
+ case GL_MAP1_TEXTURE_COORD_1:
+ which=3;
+ dimension = 1;
+ break;
+ case GL_MAP1_TEXTURE_COORD_2:
+ which=3;
+ dimension = 2;
+ break;
+
+ case GL_MAP1_TEXTURE_COORD_3:
+ which=3;
+ dimension = 3;
+ break;
+ case GL_MAP1_TEXTURE_COORD_4:
+ which=3;
+ dimension = 4;
+ break;
+ }
+ inMap1f(which, dimension, ulo, uhi, stride, order, pts);
+ }
+ else
+ glMap1f((GLenum) type, (GLfloat) ulo, (GLfloat) uhi, (GLint) stride,
+ (GLint) order, (const GLfloat *) pts);
+}
+
+/*-------------------------------------------------------------------------
+ * mapmesh1f - evaluate a mesh of points on lattice
+ *-------------------------------------------------------------------------
+ */
+void OpenGLCurveEvaluator::mapmesh1f(long style, long from, long to)
+{
+ if(output_triangles)
+ {
+ inMapMesh1f((int) from, (int) to);
+ }
+ else
+ {
+ switch(style) {
+ default:
+ case N_MESHFILL:
+ case N_MESHLINE:
+ glEvalMesh1((GLenum) GL_LINE, (GLint) from, (GLint) to);
+ break;
+ case N_MESHPOINT:
+ glEvalMesh1((GLenum) GL_POINT, (GLint) from, (GLint) to);
+ break;
+ }
+ }
+}
+
+/*-------------------------------------------------------------------------
+ * evalpoint1i - evaluate a point on a curve
+ *-------------------------------------------------------------------------
+ */
+void OpenGLCurveEvaluator::evalpoint1i(long i)
+{
+ glEvalPoint1((GLint) i);
+}
+
+/*-------------------------------------------------------------------------
+ * evalcoord1f - evaluate a point on a curve
+ *-------------------------------------------------------------------------
+ */
+void OpenGLCurveEvaluator::evalcoord1f(long, REAL u)
+{
+ glEvalCoord1f((GLfloat) u);
+}
+
+void
+#ifdef _WIN32
+OpenGLCurveEvaluator::putCallBack(GLenum which, void (GLAPIENTRY *fn)())
+#else
+OpenGLCurveEvaluator::putCallBack(GLenum which, _GLUfuncptr fn)
+#endif
+{
+ switch(which)
+ {
+ case GLU_NURBS_BEGIN:
+ beginCallBackN = (void (GLAPIENTRY *) (GLenum)) fn;
+ break;
+ case GLU_NURBS_END:
+ endCallBackN = (void (GLAPIENTRY *) (void)) fn;
+ break;
+ case GLU_NURBS_VERTEX:
+ vertexCallBackN = (void (GLAPIENTRY *) (const GLfloat*)) fn;
+ break;
+ case GLU_NURBS_NORMAL:
+ normalCallBackN = (void (GLAPIENTRY *) (const GLfloat*)) fn;
+ break;
+ case GLU_NURBS_COLOR:
+ colorCallBackN = (void (GLAPIENTRY *) (const GLfloat*)) fn;
+ break;
+ case GLU_NURBS_TEXTURE_COORD:
+ texcoordCallBackN = (void (GLAPIENTRY *) (const GLfloat*)) fn;
+ break;
+ case GLU_NURBS_BEGIN_DATA:
+ beginCallBackData = (void (GLAPIENTRY *) (GLenum, void*)) fn;
+ break;
+ case GLU_NURBS_END_DATA:
+ endCallBackData = (void (GLAPIENTRY *) (void*)) fn;
+ break;
+ case GLU_NURBS_VERTEX_DATA:
+ vertexCallBackData = (void (GLAPIENTRY *) (const GLfloat*, void*)) fn;
+ break;
+ case GLU_NURBS_NORMAL_DATA:
+ normalCallBackData = (void (GLAPIENTRY *) (const GLfloat*, void*)) fn;
+ break;
+ case GLU_NURBS_COLOR_DATA:
+ colorCallBackData = (void (GLAPIENTRY *) (const GLfloat*, void*)) fn;
+ break;
+ case GLU_NURBS_TEXTURE_COORD_DATA:
+ texcoordCallBackData = (void (GLAPIENTRY *) (const GLfloat*, void*)) fn;
+ break;
+ }
+}
+
+void
+OpenGLCurveEvaluator::beginCallBack(GLenum which, void *data)
+{
+ if(beginCallBackData)
+ beginCallBackData(which, data);
+ else if(beginCallBackN)
+ beginCallBackN(which);
+}
+
+void
+OpenGLCurveEvaluator::endCallBack(void *data)
+{
+ if(endCallBackData)
+ endCallBackData(data);
+ else if(endCallBackN)
+ endCallBackN();
+}
+
+void
+OpenGLCurveEvaluator::vertexCallBack(const GLfloat *vert, void* data)
+{
+ if(vertexCallBackData)
+ vertexCallBackData(vert, data);
+ else if(vertexCallBackN)
+ vertexCallBackN(vert);
+}
+
+
+void
+OpenGLCurveEvaluator::normalCallBack(const GLfloat *normal, void* data)
+{
+ if(normalCallBackData)
+ normalCallBackData(normal, data);
+ else if(normalCallBackN)
+ normalCallBackN(normal);
+}
+
+void
+OpenGLCurveEvaluator::colorCallBack(const GLfloat *color, void* data)
+{
+ if(colorCallBackData)
+ colorCallBackData(color, data);
+ else if(colorCallBackN)
+ colorCallBackN(color);
+}
+
+void
+OpenGLCurveEvaluator::texcoordCallBack(const GLfloat *texcoord, void* data)
+{
+ if(texcoordCallBackData)
+ texcoordCallBackData(texcoord, data);
+ else if(texcoordCallBackN)
+ texcoordCallBackN(texcoord);
+}
projects / reactos.git / blobdiff