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265 lines
6.7 KiB
265 lines
6.7 KiB
#include <glos.h>
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#include <GL/gl.h>
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#include <GL/glu.h>
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#include "glimport.h"
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#include "glrender.h"
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#include "nurbscon.h"
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GLUnurbs *gluNewNurbsRenderer(void)
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{
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GLUnurbs *t;
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t = new GLUnurbs;
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return t;
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}
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void gluDeleteNurbsRenderer(GLUnurbs *r)
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{
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delete r;
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}
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void gluBeginSurface(GLUnurbs *r)
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{
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r->bgnsurface(0);
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}
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void gluBeginCurve(GLUnurbs *r)
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{
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r->bgncurve(0);
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}
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void gluEndCurve(GLUnurbs *r)
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{
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r->endcurve();
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}
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void gluEndSurface(GLUnurbs *r)
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{
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r->endsurface();
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}
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void gluBeginTrim(GLUnurbs *r)
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{
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r->bgntrim();
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}
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void gluEndTrim(GLUnurbs *r)
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{
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r->endtrim();
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}
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void gluPwlCurve(GLUnurbs *r, GLint count, INREAL array[],
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GLint stride, GLenum type)
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{
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GLenum realType;
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switch(type) {
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case GLU_MAP1_TRIM_2:
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realType = N_P2D;
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break;
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case GLU_MAP1_TRIM_3:
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realType = N_P2DR;
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break;
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default:
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realType = type;
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break;
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}
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r->pwlcurve(count, array, sizeof(INREAL) * stride, realType);
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}
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void gluNurbsCurve(GLUnurbs *r, GLint nknots, INREAL knot[], GLint stride,
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INREAL ctlarray[], GLint order, GLenum type)
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{
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GLenum realType;
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switch(type) {
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case GLU_MAP1_TRIM_2:
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realType = N_P2D;
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break;
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case GLU_MAP1_TRIM_3:
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realType = N_P2DR;
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break;
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default:
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realType = type;
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break;
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}
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r->nurbscurve(nknots, knot, sizeof(INREAL) * stride, ctlarray, order,
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realType);
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}
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void gluNurbsSurface(GLUnurbs *r, GLint sknot_count, GLfloat *sknot,
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GLint tknot_count, GLfloat *tknot,
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GLint s_stride, GLint t_stride,
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GLfloat *ctlarray, GLint sorder, GLint torder,
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GLenum type)
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{
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r->nurbssurface(sknot_count, sknot, tknot_count, tknot,
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sizeof(INREAL) * s_stride, sizeof(INREAL) * t_stride,
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ctlarray, sorder, torder, type);
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}
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void gluLoadSamplingMatrices(GLUnurbs *r, const GLfloat modelMatrix[16],
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const GLfloat projMatrix[16],
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const GLint viewport[4])
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{
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#ifdef NT
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r->useGLMatrices((float (*)[4])modelMatrix, (float (*)[4])projMatrix, viewport);
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#else
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r->useGLMatrices(modelMatrix, projMatrix, viewport);
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#endif
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}
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void gluNurbsProperty(GLUnurbs *r, GLenum property, GLfloat value)
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{
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GLfloat nurbsValue;
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switch (property) {
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case GLU_AUTO_LOAD_MATRIX:
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r->setautoloadmode(value);
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return;
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case GLU_CULLING:
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if (value != 0.0) {
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nurbsValue = N_CULLINGON;
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} else {
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nurbsValue = N_NOCULLING;
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}
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r->setnurbsproperty(GL_MAP2_VERTEX_3, N_CULLING, nurbsValue);
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r->setnurbsproperty(GL_MAP2_VERTEX_4, N_CULLING, nurbsValue);
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r->setnurbsproperty(GL_MAP1_VERTEX_3, N_CULLING, nurbsValue);
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r->setnurbsproperty(GL_MAP1_VERTEX_4, N_CULLING, nurbsValue);
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return;
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case GLU_SAMPLING_METHOD:
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if (value == GLU_PATH_LENGTH) {
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nurbsValue = N_PATHLENGTH;
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} else if (value == GLU_PARAMETRIC_ERROR) {
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nurbsValue = N_PARAMETRICDISTANCE;
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} else if (value == GLU_DOMAIN_DISTANCE) {
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nurbsValue = N_DOMAINDISTANCE;
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} else {
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r->postError(GLU_INVALID_VALUE);
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return;
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}
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r->setnurbsproperty(GL_MAP2_VERTEX_3, N_SAMPLINGMETHOD, nurbsValue);
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r->setnurbsproperty(GL_MAP2_VERTEX_4, N_SAMPLINGMETHOD, nurbsValue);
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r->setnurbsproperty(GL_MAP1_VERTEX_3, N_SAMPLINGMETHOD, nurbsValue);
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r->setnurbsproperty(GL_MAP1_VERTEX_4, N_SAMPLINGMETHOD, nurbsValue);
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return;
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case GLU_SAMPLING_TOLERANCE:
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r->setnurbsproperty(GL_MAP2_VERTEX_3, N_PIXEL_TOLERANCE, value);
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r->setnurbsproperty(GL_MAP2_VERTEX_4, N_PIXEL_TOLERANCE, value);
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r->setnurbsproperty(GL_MAP1_VERTEX_3, N_PIXEL_TOLERANCE, value);
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r->setnurbsproperty(GL_MAP1_VERTEX_4, N_PIXEL_TOLERANCE, value);
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return;
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case GLU_PARAMETRIC_TOLERANCE:
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r->setnurbsproperty(GL_MAP2_VERTEX_3, N_ERROR_TOLERANCE, value);
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r->setnurbsproperty(GL_MAP2_VERTEX_4, N_ERROR_TOLERANCE, value);
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r->setnurbsproperty(GL_MAP1_VERTEX_3, N_ERROR_TOLERANCE, value);
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r->setnurbsproperty(GL_MAP1_VERTEX_4, N_ERROR_TOLERANCE, value);
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return;
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case GLU_DISPLAY_MODE:
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if (value == GLU_FILL) {
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nurbsValue = N_FILL;
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} else if (value == GLU_OUTLINE_POLYGON) {
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nurbsValue = N_OUTLINE_POLY;
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} else if (value == GLU_OUTLINE_PATCH) {
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nurbsValue = N_OUTLINE_PATCH;
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} else {
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r->postError(GLU_INVALID_VALUE);
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return;
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}
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r->setnurbsproperty(N_DISPLAY, nurbsValue);
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break;
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case GLU_U_STEP:
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r->setnurbsproperty(GL_MAP1_VERTEX_3, N_S_STEPS, value);
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r->setnurbsproperty(GL_MAP1_VERTEX_4, N_S_STEPS, value);
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r->setnurbsproperty(GL_MAP2_VERTEX_3, N_S_STEPS, value);
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r->setnurbsproperty(GL_MAP2_VERTEX_4, N_S_STEPS, value);
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break;
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case GLU_V_STEP:
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r->setnurbsproperty(GL_MAP1_VERTEX_3, N_T_STEPS, value);
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r->setnurbsproperty(GL_MAP1_VERTEX_4, N_T_STEPS, value);
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r->setnurbsproperty(GL_MAP2_VERTEX_3, N_T_STEPS, value);
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r->setnurbsproperty(GL_MAP2_VERTEX_4, N_T_STEPS, value);
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break;
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default:
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r->postError(GLU_INVALID_ENUM);
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return;
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}
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}
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void gluGetNurbsProperty(GLUnurbs *r, GLenum property, GLfloat *value)
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{
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GLfloat nurbsValue;
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switch(property) {
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case GLU_AUTO_LOAD_MATRIX:
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if (r->getautoloadmode()) {
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*value = GL_TRUE;
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} else {
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*value = GL_FALSE;
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}
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break;
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case GLU_CULLING:
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r->getnurbsproperty(GL_MAP2_VERTEX_3, N_CULLING, &nurbsValue);
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if (nurbsValue == N_CULLINGON) {
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*value = GL_TRUE;
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} else {
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*value = GL_FALSE;
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}
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break;
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case GLU_SAMPLING_METHOD:
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r->getnurbsproperty(GL_MAP2_VERTEX_3, N_SAMPLINGMETHOD, value);
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break;
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case GLU_SAMPLING_TOLERANCE:
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r->getnurbsproperty(GL_MAP2_VERTEX_3, N_PIXEL_TOLERANCE, value);
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break;
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case GLU_PARAMETRIC_TOLERANCE:
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r->getnurbsproperty(GL_MAP2_VERTEX_3, N_ERROR_TOLERANCE, value);
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break;
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case GLU_U_STEP:
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r->getnurbsproperty(GL_MAP2_VERTEX_3, N_S_STEPS, value);
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break;
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case GLU_V_STEP:
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r->getnurbsproperty(GL_MAP2_VERTEX_3, N_T_STEPS, value);
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break;
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case GLU_DISPLAY_MODE:
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r->getnurbsproperty(N_DISPLAY, &nurbsValue);
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if (nurbsValue == N_FILL) {
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*value = GLU_FILL;
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} else if (nurbsValue == N_OUTLINE_POLY) {
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*value = GLU_OUTLINE_POLYGON;
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} else {
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*value = GLU_OUTLINE_PATCH;
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}
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break;
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default:
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r->postError(GLU_INVALID_ENUM);
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return;
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}
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}
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void gluNurbsCallback(GLUnurbs *r, GLenum which, void (*fn)())
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{
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switch (which) {
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case GLU_ERROR:
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#ifdef NT
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r->errorCallback = (GLUnurbsErrorProc) fn;
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#else
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r->errorCallback = (void (*)( GLenum )) fn;
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#endif
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break;
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default:
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r->postError(GLU_INVALID_ENUM);
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return;
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}
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}
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