361 lines
7.2 KiB
C
361 lines
7.2 KiB
C
/*
|
|
* (c) Copyright 1993, Silicon Graphics, Inc.
|
|
* ALL RIGHTS RESERVED
|
|
* Permission to use, copy, modify, and distribute this software for
|
|
* any purpose and without fee is hereby granted, provided that the above
|
|
* copyright notice appear in all copies and that both the copyright notice
|
|
* and this permission notice appear in supporting documentation, and that
|
|
* the name of Silicon Graphics, Inc. not be used in advertising
|
|
* or publicity pertaining to distribution of the software without specific,
|
|
* written prior permission.
|
|
*
|
|
* THE MATERIAL EMBODIED ON THIS SOFTWARE IS PROVIDED TO YOU "AS-IS"
|
|
* AND WITHOUT WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR OTHERWISE,
|
|
* INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY OR
|
|
* FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
|
|
* GRAPHICS, INC. BE LIABLE TO YOU OR ANYONE ELSE FOR ANY DIRECT,
|
|
* SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY
|
|
* KIND, OR ANY DAMAGES WHATSOEVER, INCLUDING WITHOUT LIMITATION,
|
|
* LOSS OF PROFIT, LOSS OF USE, SAVINGS OR REVENUE, OR THE CLAIMS OF
|
|
* THIRD PARTIES, WHETHER OR NOT SILICON GRAPHICS, INC. HAS BEEN
|
|
* ADVISED OF THE POSSIBILITY OF SUCH LOSS, HOWEVER CAUSED AND ON
|
|
* ANY THEORY OF LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE
|
|
* POSSESSION, USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
*
|
|
* US Government Users Restricted Rights
|
|
* Use, duplication, or disclosure by the Government is subject to
|
|
* restrictions set forth in FAR 52.227.19(c)(2) or subparagraph
|
|
* (c)(1)(ii) of the Rights in Technical Data and Computer Software
|
|
* clause at DFARS 252.227-7013 and/or in similar or successor
|
|
* clauses in the FAR or the DOD or NASA FAR Supplement.
|
|
* Unpublished-- rights reserved under the copyright laws of the
|
|
* United States. Contractor/manufacturer is Silicon Graphics,
|
|
* Inc., 2011 N. Shoreline Blvd., Mountain View, CA 94039-7311.
|
|
*
|
|
* OpenGL(TM) is a trademark of Silicon Graphics, Inc.
|
|
*/
|
|
#include <windows.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <GL/gl.h>
|
|
#include <GL/glu.h>
|
|
#include <math.h>
|
|
#include "tk.h"
|
|
|
|
|
|
#define INREAL float
|
|
|
|
#define S_NUMPOINTS 13
|
|
#define S_ORDER 3
|
|
#define S_NUMKNOTS (S_NUMPOINTS + S_ORDER)
|
|
#define T_NUMPOINTS 3
|
|
#define T_ORDER 3
|
|
#define T_NUMKNOTS (T_NUMPOINTS + T_ORDER)
|
|
#define SQRT_TWO 1.41421356237309504880
|
|
|
|
|
|
typedef INREAL Point[4];
|
|
|
|
|
|
GLenum doubleBuffer, directRender;
|
|
|
|
GLenum expectedError;
|
|
GLint rotX = 40, rotY = 40;
|
|
INREAL sknots[S_NUMKNOTS] = {
|
|
-1.0, -1.0, -1.0, 0.0, 1.0, 2.0, 3.0, 4.0,
|
|
4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 9.0, 9.0
|
|
};
|
|
INREAL tknots[T_NUMKNOTS] = {
|
|
1.0, 1.0, 1.0, 2.0, 2.0, 2.0
|
|
};
|
|
Point ctlpoints[S_NUMPOINTS][T_NUMPOINTS] = {
|
|
{
|
|
{
|
|
4.0, 2.0, 2.0, 1.0
|
|
},
|
|
{
|
|
4.0, 1.6, 2.5, 1.0
|
|
},
|
|
{
|
|
4.0, 2.0, 3.0, 1.0
|
|
}
|
|
},
|
|
{
|
|
{
|
|
5.0, 4.0, 2.0, 1.0
|
|
},
|
|
{
|
|
5.0, 4.0, 2.5, 1.0
|
|
},
|
|
{
|
|
5.0, 4.0, 3.0, 1.0
|
|
}
|
|
},
|
|
{
|
|
{
|
|
6.0, 5.0, 2.0, 1.0
|
|
},
|
|
{
|
|
6.0, 5.0, 2.5, 1.0
|
|
},
|
|
{
|
|
6.0, 5.0, 3.0, 1.0
|
|
}
|
|
},
|
|
{
|
|
{
|
|
SQRT_TWO*6.0, SQRT_TWO*6.0, SQRT_TWO*2.0, SQRT_TWO
|
|
},
|
|
{
|
|
SQRT_TWO*6.0, SQRT_TWO*6.0, SQRT_TWO*2.5, SQRT_TWO
|
|
},
|
|
{
|
|
SQRT_TWO*6.0, SQRT_TWO*6.0, SQRT_TWO*3.0, SQRT_TWO
|
|
}
|
|
},
|
|
{
|
|
{
|
|
5.2, 6.7, 2.0, 1.0
|
|
},
|
|
{
|
|
5.2, 6.7, 2.5, 1.0
|
|
},
|
|
{
|
|
5.2, 6.7, 3.0, 1.0
|
|
}
|
|
},
|
|
{
|
|
{
|
|
SQRT_TWO*4.0, SQRT_TWO*6.0, SQRT_TWO*2.0, SQRT_TWO
|
|
},
|
|
{
|
|
SQRT_TWO*4.0, SQRT_TWO*6.0, SQRT_TWO*2.5, SQRT_TWO
|
|
},
|
|
{
|
|
SQRT_TWO*4.0, SQRT_TWO*6.0, SQRT_TWO*3.0, SQRT_TWO
|
|
}
|
|
},
|
|
{
|
|
{
|
|
4.0, 5.2, 2.0, 1.0
|
|
},
|
|
{
|
|
4.0, 4.6, 2.5, 1.0
|
|
},
|
|
{
|
|
4.0, 5.2, 3.0, 1.0
|
|
}
|
|
},
|
|
{
|
|
{
|
|
SQRT_TWO*4.0, SQRT_TWO*6.0, SQRT_TWO*2.0, SQRT_TWO
|
|
},
|
|
{
|
|
SQRT_TWO*4.0, SQRT_TWO*6.0, SQRT_TWO*2.5, SQRT_TWO
|
|
},
|
|
{
|
|
SQRT_TWO*4.0, SQRT_TWO*6.0, SQRT_TWO*3.0, SQRT_TWO
|
|
}
|
|
},
|
|
{
|
|
{
|
|
2.8, 6.7, 2.0, 1.0
|
|
},
|
|
{
|
|
2.8, 6.7, 2.5, 1.0
|
|
},
|
|
{
|
|
2.8, 6.7, 3.0, 1.0
|
|
}
|
|
},
|
|
{
|
|
{
|
|
SQRT_TWO*2.0, SQRT_TWO*6.0, SQRT_TWO*2.0, SQRT_TWO
|
|
},
|
|
{
|
|
SQRT_TWO*2.0, SQRT_TWO*6.0, SQRT_TWO*2.5, SQRT_TWO
|
|
},
|
|
{
|
|
SQRT_TWO*2.0, SQRT_TWO*6.0, SQRT_TWO*3.0, SQRT_TWO
|
|
}
|
|
},
|
|
{
|
|
{
|
|
2.0, 5.0, 2.0, 1.0
|
|
},
|
|
{
|
|
2.0, 5.0, 2.5, 1.0
|
|
},
|
|
{
|
|
2.0, 5.0, 3.0, 1.0
|
|
}
|
|
},
|
|
{
|
|
{
|
|
3.0, 4.0, 2.0, 1.0
|
|
},
|
|
{
|
|
3.0, 4.0, 2.5, 1.0
|
|
},
|
|
{
|
|
3.0, 4.0, 3.0, 1.0
|
|
}
|
|
},
|
|
{
|
|
{
|
|
4.0, 2.0, 2.0, 1.0
|
|
},
|
|
{
|
|
4.0, 1.6, 2.5, 1.0
|
|
},
|
|
{
|
|
4.0, 2.0, 3.0, 1.0
|
|
}
|
|
}
|
|
};
|
|
GLUnurbsObj *theNurbs;
|
|
|
|
|
|
static void ErrorCallback(GLenum which)
|
|
{
|
|
|
|
if (which != expectedError) {
|
|
fprintf(stderr, "Unexpected error occured (%d):\n", which);
|
|
fprintf(stderr, " %s\n", gluErrorString(which));
|
|
}
|
|
}
|
|
|
|
static void Init(void)
|
|
{
|
|
|
|
theNurbs = gluNewNurbsRenderer();
|
|
gluNurbsCallback(theNurbs, GLU_ERROR, ErrorCallback);
|
|
|
|
gluNurbsProperty(theNurbs, GLU_SAMPLING_TOLERANCE, 15.0);
|
|
gluNurbsProperty(theNurbs, GLU_DISPLAY_MODE, GLU_OUTLINE_PATCH);
|
|
|
|
expectedError = GLU_INVALID_ENUM;
|
|
gluNurbsProperty(theNurbs, ~0, 15.0);
|
|
expectedError = GLU_NURBS_ERROR13;
|
|
gluEndSurface(theNurbs);
|
|
expectedError = 0;
|
|
|
|
glColor3f(1.0, 1.0, 1.0);
|
|
}
|
|
|
|
static void Reshape(int width, int height)
|
|
{
|
|
|
|
glViewport(0, 0, (GLint)width, (GLint)height);
|
|
|
|
glMatrixMode(GL_PROJECTION);
|
|
glLoadIdentity();
|
|
glFrustum(-2.0, 2.0, -2.0, 2.0, 0.8, 10.0);
|
|
gluLookAt(7.0, 4.5, 4.0, 4.5, 4.5, 2.5, 6.0, -3.0, 2.0);
|
|
glMatrixMode(GL_MODELVIEW);
|
|
}
|
|
|
|
static GLenum Key(int key, GLenum mask)
|
|
{
|
|
|
|
switch (key) {
|
|
case TK_ESCAPE:
|
|
tkQuit();
|
|
case TK_DOWN:
|
|
rotX -= 5;
|
|
break;
|
|
case TK_UP:
|
|
rotX += 5;
|
|
break;
|
|
case TK_LEFT:
|
|
rotY -= 5;
|
|
break;
|
|
case TK_RIGHT:
|
|
rotY += 5;
|
|
break;
|
|
default:
|
|
return GL_FALSE;
|
|
}
|
|
return GL_TRUE;
|
|
}
|
|
|
|
static void Draw(void)
|
|
{
|
|
|
|
glClear(GL_COLOR_BUFFER_BIT);
|
|
|
|
glPushMatrix();
|
|
|
|
glTranslatef(4.0, 4.5, 2.5);
|
|
glRotatef(rotY, 1, 0, 0);
|
|
glRotatef(rotX, 0, 1, 0);
|
|
glTranslatef(-4.0, -4.5, -2.5);
|
|
|
|
gluBeginSurface(theNurbs);
|
|
gluNurbsSurface(theNurbs, S_NUMKNOTS, sknots, T_NUMKNOTS, tknots,
|
|
4*T_NUMPOINTS, 4, &ctlpoints[0][0][0], S_ORDER,
|
|
T_ORDER, GL_MAP2_VERTEX_4);
|
|
gluEndSurface(theNurbs);
|
|
|
|
glPopMatrix();
|
|
|
|
glFlush();
|
|
|
|
if (doubleBuffer) {
|
|
tkSwapBuffers();
|
|
}
|
|
}
|
|
|
|
static GLenum Args(int argc, char **argv)
|
|
{
|
|
GLint i;
|
|
|
|
doubleBuffer = GL_FALSE;
|
|
directRender = GL_FALSE;
|
|
|
|
for (i = 1; i < argc; i++) {
|
|
if (strcmp(argv[i], "-sb") == 0) {
|
|
doubleBuffer = GL_FALSE;
|
|
} else if (strcmp(argv[i], "-db") == 0) {
|
|
doubleBuffer = GL_TRUE;
|
|
} else if (strcmp(argv[i], "-dr") == 0) {
|
|
directRender = GL_TRUE;
|
|
} else if (strcmp(argv[i], "-ir") == 0) {
|
|
directRender = GL_FALSE;
|
|
} else {
|
|
printf("%s (Bad option).\n", argv[i]);
|
|
return GL_FALSE;
|
|
}
|
|
}
|
|
return GL_TRUE;
|
|
}
|
|
|
|
void main(int argc, char **argv)
|
|
{
|
|
GLenum type;
|
|
|
|
if (Args(argc, argv) == GL_FALSE) {
|
|
tkQuit();
|
|
}
|
|
|
|
tkInitPosition(0, 0, 300, 300);
|
|
|
|
type = TK_RGB;
|
|
type |= (doubleBuffer) ? TK_DOUBLE : TK_SINGLE;
|
|
type |= (directRender) ? TK_DIRECT : TK_INDIRECT;
|
|
tkInitDisplayMode(type);
|
|
|
|
if (tkInitWindow("NURBS Test") == GL_FALSE) {
|
|
tkQuit();
|
|
}
|
|
|
|
Init();
|
|
|
|
tkExposeFunc(Reshape);
|
|
tkReshapeFunc(Reshape);
|
|
tkKeyDownFunc(Key);
|
|
tkDisplayFunc(Draw);
|
|
tkExec();
|
|
}
|