libgender/entity.C

#include <algorithm>
#include <cassert>

using namespace std;

#include "opengl.h"

#include "util.h"
#include "entity.h"
#include "oct.h"
#include "view.h"

/////////////////////////////////////////////////////////////////////////////

geometry::~geometry ()
{
}

template class geometry_opengl1d<GL_POINTS>;
template class geometry_opengl1d<GL_LINES>;
template class geometry_opengl1d<GL_LINE_STRIP>;
template class geometry_opengl1d<GL_LINE_LOOP>;
template class geometry_opengl2d<GL_TRIANGLES>;
template class geometry_opengl2d<GL_TRIANGLE_STRIP>;
template class geometry_opengl2d<GL_TRIANGLE_FAN>;
template class geometry_opengl2d<GL_QUADS>;
template class geometry_opengl2d<GL_QUAD_STRIP>;
template class geometry_opengl2d<GL_POLYGON>;

geometry_opengl::geometry_opengl ()
{
  list = glGenLists (1);
}

geometry_opengl::~geometry_opengl ()
{
  glDeleteLists (list, 1);
}

template<GLenum type>
void geometry_opengl1d<type>::set (const vector<vertex1d> &v)
{
  clear ();
  insert (end (), v.begin (), v.end ());

  bbox.reset ();

  for (const_iterator i = end (); i-- != begin (); )
    bbox.add (i->p);

  update ();
}

template<GLenum type>
void geometry_opengl1d<type>::draw (view &ctx)
{
  glBegin (type);

  for (iterator i = begin (); i < end (); ++i)
    {
      glColor3fv ((GLfloat *)&i->c);
      glVertex3fv ((GLfloat *)&i->p);
    }

  glEnd ();
}

template<GLenum type>
void geometry_opengl2d<type>::set (const vector<vertex2d> &v)
{
  bbox.reset ();

  for (vector<vertex2d>::const_iterator i = v.end (); i-- != v.begin (); )
    bbox.add (i->p);

  update ();

  glNewList (list, GL_COMPILE);

  m->begin ();

#if 0
  glBegin (type);
     
  for (vector<vertex2d>::const_iterator i = v.begin (); i < v.end (); ++i)
    {
      glTexCoord2fv ((GLfloat *)&i->t);
      glNormal3fv ((GLfloat *)&i->n);
      glVertex3fv ((GLfloat *)&i->p);
    }

  glEnd ();
#else
  glEnableClientState (GL_VERTEX_ARRAY);
  glVertexPointer (3, GL_FLOAT, sizeof (vertex2d), (void *)&v.begin ()->p);
  glEnableClientState (GL_NORMAL_ARRAY);
  glNormalPointer (GL_FLOAT, sizeof (vertex2d), (void *)&v.begin ()->n);
  glEnableClientState (GL_TEXTURE_COORD_ARRAY);
  glTexCoordPointer (2, GL_FLOAT, sizeof (vertex2d), (void *)&v.begin ()->t);

  glDrawArrays (type, 0, v.size ());
#endif

  m->end ();

  glEndList ();
}

template<GLenum type>
void geometry_opengl2d<type>::draw (view &ctx)
{
  glCallList (list);
}

/////////////////////////////////////////////////////////////////////////////

void geometry_transform::update ()
{
  const box &sub = g->bbox;

  bbox.reset ();
  bbox.add (m * vec3 (sub.a.x, sub.a.y, sub.a.z));
  bbox.add (m * vec3 (sub.b.x, sub.a.y, sub.a.z));
  bbox.add (m * vec3 (sub.a.x, sub.b.y, sub.a.z));
  bbox.add (m * vec3 (sub.b.x, sub.b.y, sub.a.z));
  bbox.add (m * vec3 (sub.a.x, sub.a.y, sub.b.z));
  bbox.add (m * vec3 (sub.b.x, sub.a.y, sub.b.z));
  bbox.add (m * vec3 (sub.a.x, sub.b.y, sub.b.z));
  bbox.add (m * vec3 (sub.b.x, sub.b.y, sub.b.z));

  geometry::update ();
}

#if 0
void geometry_transform::renormalize ()
{
  point trans(m(0,3), m(1,3), m(2,3));
  ::renormalize (e->orig, trans);
  m(0,3) = trans.x; m(1,3) = trans.y; m(2,3) = trans.z;
}
#endif

void geometry_transform::update (const matrix &xfrm)
{
  m = m * xfrm;

  update ();
}

void geometry_transform::set_matrix (const matrix &xfrm)
{
  m = xfrm;

  update ();
}

void geometry_transform::draw (view &ctx)
{
  glPushMatrix ();
  glMultMatrixf ((GLfloat *)&m);
  g->draw (ctx);
  glPopMatrix ();
}

void geometry_anim::draw (view &ctx)
{
  matrix save_m = m;

  update (matrix::rotation (vx * timer.now, vec3 (1, 0, 0))
        * matrix::rotation (vy * timer.now, vec3 (0, 1, 0))
        * matrix::rotation (vz * timer.now, vec3 (0, 0, 1)));
  
  geometry_transform::draw (ctx);

  m = save_m;
}

/////////////////////////////////////////////////////////////////////////////

void geometry_filter::set (geometry *g)
{
  this->g = g;

  if (g)
    g->parent = this;

  update ();
}

void geometry_filter::update ()
{
  if (g)
    {
      bbox = g->bbox;
      geometry::update ();
    }
}

void geometry_filter::draw (view &ctx)
{
  g->draw (ctx);
}

geometry_filter::~geometry_filter ()
{
  delete g;
}

/////////////////////////////////////////////////////////////////////////////

void geometry_container::update ()
{
  bbox.reset ();

  for (iterator i = end (); i-- != begin (); )
    bbox.add ((*i)->bbox);

  geometry::update ();
}

void geometry_container::add (geometry *g)
{
  push_back (g);
  g->parent = this;
  
  update ();
}

void geometry_container::draw (view &ctx)
{
  for (iterator i = end (); i-- != begin (); )
    (*i)->draw (ctx);
}

geometry_container::~geometry_container ()
{
  for (iterator i = end (); i-- != begin (); )
    delete *i;
 
  clear ();
}

/////////////////////////////////////////////////////////////////////////////

entity::entity (geometry *g)
: geometry_filter(g)
, p(0,0,0)
{
  update ();
}

entity::~entity ()
{
  hide ();
}

void entity::move (const vec3 &v)
{
  p = p + v;

  //renormalize (orig, p);

  update ();
}

void entity::show ()
{
  if (!o.size ())
    world.add (this);
}

void entity::hide ()
{
  for (vector<octant *>::iterator i = o.end (); i-- != o.begin (); )
    (*i)->remove (this);

  o.clear ();
}

void entity::update ()
{
  if (!g)
    return;

  bbox = g->bbox;

  a.x = orig.x + (soffs)floorf (bbox.a.x + p.x);
  a.y = orig.y + (soffs)floorf (bbox.a.y + p.y);
  a.z = orig.z + (soffs)floorf (bbox.a.z + p.z);
  b.x = orig.x + (soffs)ceilf  (bbox.b.x + p.x);
  b.y = orig.y + (soffs)ceilf  (bbox.b.y + p.y);
  b.z = orig.z + (soffs)ceilf  (bbox.b.z + p.z);

  if (o.size ())
    {
      hide ();
      show ();
    }
}

void entity::draw (view &ctx)
{
  sector diff = orig - ctx.orig;

  glPushMatrix ();
  glTranslatef (diff.x + p.x, diff.y + p.y, diff.z + p.z);
  g->draw (ctx);
  glPopMatrix ();
}

void entity::display (view &ctx)
{
  if (ctx.may_draw (this))
    draw (ctx);
}

///////////////////////////////////////////////////////////////////////////
//
static void nurbs_error (GLenum errorCode)
{
  const GLubyte *estring;
  estring = gluErrorString(errorCode);
  fprintf (stderr, "Nurbs error: %s\n", estring);
}

void errorCallback(GLenum errorCode)
{
   const GLubyte *estring;

   estring = gluErrorString(errorCode);
   fprintf (stderr, "Tessellation Error: %s\n", estring);
   exit (0);
}
void tcbBegin (GLenum prim)
{
  glBegin (prim);
}
void tcbVertex (void *data)
{
  glVertex3fv ((GLfloat *)data);
}
void tcbEnd ()
{
  glEnd ();
}
void geometry_nurbs::set ()
{
  // < XXX >: Testing CODE
  int u, v;
  for (u = 0; u < 4; u++) {
    for (v = 0; v < 4; v++) {
      ctlpoints[u][v][0] = 2.0*((GLfloat)u - 1.5);
      ctlpoints[u][v][1] = 2.0*((GLfloat)v - 1.5);

      if ( (u == 1 || u == 2) && (v == 1 || v == 2))
        ctlpoints[u][v][2] = 3.0;
      else
        ctlpoints[u][v][2] = -3.0;
    }
  }                    
  tess = gluNewTess();
  // </ XXX >

  glEnable(GL_AUTO_NORMAL);
  nurb = gluNewNurbsRenderer ();
  gluNurbsProperty (nurb, GLU_AUTO_LOAD_MATRIX, GL_FALSE);
  gluNurbsProperty (nurb, GLU_DISPLAY_MODE, GLU_FILL);
  gluNurbsProperty (nurb, GLU_NURBS_MODE, GLU_NURBS_TESSELLATOR);
  gluNurbsProperty (nurb, GLU_SAMPLING_METHOD, GLU_OBJECT_PATH_LENGTH);
  gluNurbsProperty (nurb, GLU_SAMPLING_TOLERANCE, 1.0);
  gluNurbsCallback (nurb, GLU_ERROR, (GLvoid (*)()) nurbs_error);
  gluNurbsCallback (nurb, GLU_NURBS_BEGIN, (GLvoid(*)()) tcbBegin);
  gluNurbsCallback (nurb, GLU_NURBS_VERTEX,(GLvoid(*)()) tcbVertex);
  gluNurbsCallback (nurb, GLU_NURBS_END, tcbEnd);
  glDisable(GL_AUTO_NORMAL);

}

void geometry_nurbs::draw (view &ctx) 
{
  GLfloat knots[8] = {0.0, 0.0, 0.0, 0.0, 1.0, 1.0, 1.0, 1.0};

  GLfloat mat_diffuse[] = { 0.7, 0.7, 0.7, 1.0 };
  GLfloat mat_specular[] = { 1.0, 1.0, 1.0, 1.0 };
  GLfloat mat_shininess[] = { 100.0 };

  glClearColor (0.0, 0.0, 0.0, 0.0);
  glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
  glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
  glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess);


  glEnable(GL_AUTO_NORMAL);
  gluBeginSurface (nurb);
  gluNurbsSurface (nurb, 8, knots, 8, knots, 4 * 3, 3, &ctlpoints[0][0][0], 4, 4, GL_MAP2_VERTEX_3);
  gluEndSurface (nurb);
/*
  glEnable(GL_AUTO_NORMAL);
  glPushMatrix();
  GL_LG_DEBUG;
=======

  gluEndSurface (nurb);
>>>>>>> 1.40
  glDisable(GL_AUTO_NORMAL);
  glPopMatrix();
  glFlush();
*/
}
Revision:	1.43
Committed:	Sun Oct 10 14:18:58 2004 UTC (21 years, 11 months ago) by root
Content type:	text/plain
Branch:	MAIN
Changes since 1.42:	+3 -3 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	#include <algorithm>
2	root	1.42	#include <cassert>
3	root	1.1
4			using namespace std;
5	root	1.42
6			#include "opengl.h"
7	root	1.1
8	root	1.28	#include "util.h"
9	root	1.1	#include "entity.h"
10	root	1.4	#include "oct.h"
11	root	1.13	#include "view.h"
12	root	1.1
13	root	1.21	/////////////////////////////////////////////////////////////////////////////
14
15	root	1.38	geometry::~geometry ()
16	root	1.1	{
17	root	1.2	}
18
19	root	1.38	template class geometry_opengl1d<GL_POINTS>;
20			template class geometry_opengl1d<GL_LINES>;
21			template class geometry_opengl1d<GL_LINE_STRIP>;
22			template class geometry_opengl1d<GL_LINE_LOOP>;
23			template class geometry_opengl2d<GL_TRIANGLES>;
24			template class geometry_opengl2d<GL_TRIANGLE_STRIP>;
25			template class geometry_opengl2d<GL_TRIANGLE_FAN>;
26			template class geometry_opengl2d<GL_QUADS>;
27			template class geometry_opengl2d<GL_QUAD_STRIP>;
28			template class geometry_opengl2d<GL_POLYGON>;
29	root	1.21
30	root	1.38	geometry_opengl::geometry_opengl ()
31	root	1.24	{
32			list = glGenLists (1);
33			}
34
35	root	1.38	geometry_opengl::~geometry_opengl ()
36	root	1.24	{
37			glDeleteLists (list, 1);
38			}
39
40	root	1.2	template<GLenum type>
41	root	1.38	void geometry_opengl1d<type>::set (const vector<vertex1d> &v)
42	root	1.2	{
43	root	1.38	clear ();
44			insert (end (), v.begin (), v.end ());
45
46	root	1.6	bbox.reset ();
47
48	root	1.38	for (const_iterator i = end (); i-- != begin (); )
49	root	1.6	bbox.add (i->p);
50
51	root	1.38	update ();
52	root	1.2	}
53
54			template<GLenum type>
55	root	1.38	void geometry_opengl1d<type>::draw (view &ctx)
56	root	1.2	{
57			glBegin (type);
58
59			for (iterator i = begin (); i < end (); ++i)
60			{
61	root	1.22	glColor3fv ((GLfloat *)&i->c);
62	root	1.2	glVertex3fv ((GLfloat *)&i->p);
63			}
64
65			glEnd ();
66			}
67
68			template<GLenum type>
69	root	1.38	void geometry_opengl2d<type>::set (const vector<vertex2d> &v)
70	root	1.2	{
71	root	1.24	bbox.reset ();
72
73			for (vector<vertex2d>::const_iterator i = v.end (); i-- != v.begin (); )
74			bbox.add (i->p);
75	root	1.26
76	root	1.28	update ();
77	root	1.24
78			glNewList (list, GL_COMPILE);
79	root	1.14
80	root	1.43	m->begin ();
81	root	1.15
82	root	1.20	#if 0
83	root	1.24	glBegin (type);
84
85	root	1.25	for (vector<vertex2d>::const_iterator i = v.begin (); i < v.end (); ++i)
86	root	1.24	{
87			glTexCoord2fv ((GLfloat *)&i->t);
88			glNormal3fv ((GLfloat *)&i->n);
89			glVertex3fv ((GLfloat *)&i->p);
90			}
91	root	1.4
92	root	1.24	glEnd ();
93	root	1.19	#else
94	root	1.24	glEnableClientState (GL_VERTEX_ARRAY);
95			glVertexPointer (3, GL_FLOAT, sizeof (vertex2d), (void *)&v.begin ()->p);
96			glEnableClientState (GL_NORMAL_ARRAY);
97			glNormalPointer (GL_FLOAT, sizeof (vertex2d), (void *)&v.begin ()->n);
98			glEnableClientState (GL_TEXTURE_COORD_ARRAY);
99			glTexCoordPointer (2, GL_FLOAT, sizeof (vertex2d), (void *)&v.begin ()->t);
100	root	1.19
101	root	1.24	glDrawArrays (type, 0, v.size ());
102	root	1.19	#endif
103	root	1.22
104	root	1.43	m->end ();
105
106	root	1.24	glEndList ();
107			}
108	root	1.2
109	root	1.24	template<GLenum type>
110	root	1.38	void geometry_opengl2d<type>::draw (view &ctx)
111	root	1.24	{
112	root	1.17	glCallList (list);
113	root	1.22	}
114
115			/////////////////////////////////////////////////////////////////////////////
116
117	root	1.38	void geometry_transform::update ()
118	root	1.22	{
119	root	1.38	const box &sub = g->bbox;
120	root	1.27
121			bbox.reset ();
122			bbox.add (m * vec3 (sub.a.x, sub.a.y, sub.a.z));
123			bbox.add (m * vec3 (sub.b.x, sub.a.y, sub.a.z));
124			bbox.add (m * vec3 (sub.a.x, sub.b.y, sub.a.z));
125			bbox.add (m * vec3 (sub.b.x, sub.b.y, sub.a.z));
126			bbox.add (m * vec3 (sub.a.x, sub.a.y, sub.b.z));
127			bbox.add (m * vec3 (sub.b.x, sub.a.y, sub.b.z));
128			bbox.add (m * vec3 (sub.a.x, sub.b.y, sub.b.z));
129			bbox.add (m * vec3 (sub.b.x, sub.b.y, sub.b.z));
130	root	1.22
131	root	1.38	geometry::update ();
132	root	1.28	}
133
134	root	1.38	#if 0
135			void geometry_transform::renormalize ()
136	root	1.28	{
137	root	1.34	point trans(m(0,3), m(1,3), m(2,3));
138			::renormalize (e->orig, trans);
139			m(0,3) = trans.x; m(1,3) = trans.y; m(2,3) = trans.z;
140	root	1.38	}
141	root	1.28	#endif
142
143	root	1.38	void geometry_transform::update (const matrix &xfrm)
144	root	1.28	{
145			m = m * xfrm;
146
147			update ();
148			}
149
150	root	1.38	void geometry_transform::set_matrix (const matrix &xfrm)
151	root	1.28	{
152			m = xfrm;
153
154			update ();
155	root	1.22	}
156
157	root	1.38	void geometry_transform::draw (view &ctx)
158	root	1.22	{
159	root	1.33	glPushMatrix ();
160			glMultMatrixf ((GLfloat *)&m);
161	root	1.38	g->draw (ctx);
162	root	1.33	glPopMatrix ();
163	root	1.2	}
164
165	root	1.38	void geometry_anim::draw (view &ctx)
166	root	1.23	{
167	root	1.30	matrix save_m = m;
168	root	1.23
169	root	1.30	update (matrix::rotation (vx * timer.now, vec3 (1, 0, 0))
170			* matrix::rotation (vy * timer.now, vec3 (0, 1, 0))
171			* matrix::rotation (vz * timer.now, vec3 (0, 0, 1)));
172	root	1.28
173	root	1.38	geometry_transform::draw (ctx);
174	root	1.23
175			m = save_m;
176	root	1.38	}
177
178			/////////////////////////////////////////////////////////////////////////////
179
180			void geometry_filter::set (geometry *g)
181			{
182			this->g = g;
183
184			if (g)
185			g->parent = this;
186
187			update ();
188			}
189
190			void geometry_filter::update ()
191			{
192			if (g)
193			{
194			bbox = g->bbox;
195			geometry::update ();
196			}
197			}
198
199			void geometry_filter::draw (view &ctx)
200			{
201			g->draw (ctx);
202			}
203
204			geometry_filter::~geometry_filter ()
205			{
206			delete g;
207			}
208
209			/////////////////////////////////////////////////////////////////////////////
210
211			void geometry_container::update ()
212			{
213			bbox.reset ();
214
215			for (iterator i = end (); i-- != begin (); )
216			bbox.add ((*i)->bbox);
217
218			geometry::update ();
219			}
220
221			void geometry_container::add (geometry *g)
222			{
223			push_back (g);
224			g->parent = this;
225
226			update ();
227			}
228
229			void geometry_container::draw (view &ctx)
230			{
231			for (iterator i = end (); i-- != begin (); )
232			(*i)->draw (ctx);
233			}
234
235			geometry_container::~geometry_container ()
236			{
237			for (iterator i = end (); i-- != begin (); )
238			delete *i;
239
240			clear ();
241			}
242
243			/////////////////////////////////////////////////////////////////////////////
244
245			entity::entity (geometry *g)
246	root	1.42	: geometry_filter(g)
247			, p(0,0,0)
248	root	1.38	{
249			update ();
250			}
251
252			entity::~entity ()
253			{
254			hide ();
255			}
256
257			void entity::move (const vec3 &v)
258			{
259			p = p + v;
260
261			//renormalize (orig, p);
262
263			update ();
264	root	1.42	}
265
266			void entity::show ()
267			{
268			if (!o.size ())
269			world.add (this);
270	root	1.38	}
271
272			void entity::hide ()
273			{
274			for (vector<octant *>::iterator i = o.end (); i-- != o.begin (); )
275			(*i)->remove (this);
276
277			o.clear ();
278			}
279
280			void entity::update ()
281			{
282			if (!g)
283			return;
284
285			bbox = g->bbox;
286
287			a.x = orig.x + (soffs)floorf (bbox.a.x + p.x);
288			a.y = orig.y + (soffs)floorf (bbox.a.y + p.y);
289			a.z = orig.z + (soffs)floorf (bbox.a.z + p.z);
290			b.x = orig.x + (soffs)ceilf (bbox.b.x + p.x);
291			b.y = orig.y + (soffs)ceilf (bbox.b.y + p.y);
292			b.z = orig.z + (soffs)ceilf (bbox.b.z + p.z);
293
294			if (o.size ())
295			{
296			hide ();
297			show ();
298			}
299			}
300
301			void entity::draw (view &ctx)
302			{
303			sector diff = orig - ctx.orig;
304
305			glPushMatrix ();
306			glTranslatef (diff.x + p.x, diff.y + p.y, diff.z + p.z);
307			g->draw (ctx);
308			glPopMatrix ();
309			}
310
311			void entity::display (view &ctx)
312			{
313			if (ctx.may_draw (this))
314			draw (ctx);
315	root	1.23	}
316	root	1.1
317	root	1.39	///////////////////////////////////////////////////////////////////////////
318	root	1.40	//
319	root	1.39	static void nurbs_error (GLenum errorCode)
320			{
321			const GLubyte *estring;
322			estring = gluErrorString(errorCode);
323			fprintf (stderr, "Nurbs error: %s\n", estring);
324			}
325	root	1.40
326	root	1.39	void errorCallback(GLenum errorCode)
327			{
328			const GLubyte *estring;
329
330			estring = gluErrorString(errorCode);
331			fprintf (stderr, "Tessellation Error: %s\n", estring);
332			exit (0);
333			}
334	root	1.41	void tcbBegin (GLenum prim)
335			{
336			glBegin (prim);
337			}
338			void tcbVertex (void *data)
339			{
340			glVertex3fv ((GLfloat *)data);
341			}
342			void tcbEnd ()
343			{
344			glEnd ();
345			}
346	root	1.39	void geometry_nurbs::set ()
347			{
348			// < XXX >: Testing CODE
349			int u, v;
350			for (u = 0; u < 4; u++) {
351			for (v = 0; v < 4; v++) {
352			ctlpoints[u][v][0] = 2.0*((GLfloat)u - 1.5);
353			ctlpoints[u][v][1] = 2.0*((GLfloat)v - 1.5);
354
355			if ( (u == 1 \|\| u == 2) && (v == 1 \|\| v == 2))
356			ctlpoints[u][v][2] = 3.0;
357			else
358			ctlpoints[u][v][2] = -3.0;
359			}
360			}
361	root	1.41	tess = gluNewTess();
362	root	1.39	// </ XXX >
363	root	1.1
364	root	1.39	glEnable(GL_AUTO_NORMAL);
365			nurb = gluNewNurbsRenderer ();
366	root	1.41	gluNurbsProperty (nurb, GLU_AUTO_LOAD_MATRIX, GL_FALSE);
367			gluNurbsProperty (nurb, GLU_DISPLAY_MODE, GLU_FILL);
368			gluNurbsProperty (nurb, GLU_NURBS_MODE, GLU_NURBS_TESSELLATOR);
369			gluNurbsProperty (nurb, GLU_SAMPLING_METHOD, GLU_OBJECT_PATH_LENGTH);
370			gluNurbsProperty (nurb, GLU_SAMPLING_TOLERANCE, 1.0);
371	root	1.39	gluNurbsCallback (nurb, GLU_ERROR, (GLvoid (*)()) nurbs_error);
372	root	1.41	gluNurbsCallback (nurb, GLU_NURBS_BEGIN, (GLvoid(*)()) tcbBegin);
373			gluNurbsCallback (nurb, GLU_NURBS_VERTEX,(GLvoid(*)()) tcbVertex);
374			gluNurbsCallback (nurb, GLU_NURBS_END, tcbEnd);
375	root	1.39	glDisable(GL_AUTO_NORMAL);
376	root	1.41
377	root	1.39	}
378	root	1.40
379	root	1.39	void geometry_nurbs::draw (view &ctx)
380			{
381			GLfloat knots[8] = {0.0, 0.0, 0.0, 0.0, 1.0, 1.0, 1.0, 1.0};
382
383			GLfloat mat_diffuse[] = { 0.7, 0.7, 0.7, 1.0 };
384			GLfloat mat_specular[] = { 1.0, 1.0, 1.0, 1.0 };
385			GLfloat mat_shininess[] = { 100.0 };
386
387			glClearColor (0.0, 0.0, 0.0, 0.0);
388			glMaterialfv(GL_FRONT, GL_DIFFUSE, mat_diffuse);
389			glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
390			glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess);
391
392
393			glEnable(GL_AUTO_NORMAL);
394			gluBeginSurface (nurb);
395			gluNurbsSurface (nurb, 8, knots, 8, knots, 4 * 3, 3, &ctlpoints[0][0][0], 4, 4, GL_MAP2_VERTEX_3);
396	root	1.41	gluEndSurface (nurb);
397			/*
398			glEnable(GL_AUTO_NORMAL);
399			glPushMatrix();
400			GL_LG_DEBUG;
401			=======
402	root	1.39
403	root	1.40	gluEndSurface (nurb);
404	root	1.41	>>>>>>> 1.40
405	root	1.39	glDisable(GL_AUTO_NORMAL);
406	root	1.41	glPopMatrix();
407			glFlush();
408			*/
409	root	1.39	}