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progs/redbook: add additional tests for GL 1.4

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This commit is contained in:
Brian Paul
2010-02-15 09:55:01 -07:00
parent 3be1c11001
commit ce65a8debe
15 changed files with 2912 additions and 8 deletions
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progs/redbook/surfpoints.c Normal file
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/*
* Copyright (c) 1993-2003, 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 Unpublished - rights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.
* 1500 Crittenden Lane
* Mountain View, CA 94043
* United State of America
*
* OpenGL(R) is a registered trademark of Silicon Graphics, Inc.
*/
/*
* surfpoints.c
* This program is a modification of the earlier surface.c
* program. The vertex data are not directly rendered,
* but are instead passed to the callback function.
* The values of the tessellated vertices are printed
* out there.
*
* This program draws a NURBS surface in the shape of a
* symmetrical hill. The 'c' keyboard key allows you to
* toggle the visibility of the control points themselves.
* Note that some of the control points are hidden by the
* surface itself.
*/
#include <GL/glut.h>
#include <stdlib.h>
#include <stdio.h>
#ifdef GLU_VERSION_1_3
#ifndef CALLBACK
#define CALLBACK
#endif
GLfloat ctlpoints[4][4][3];
int showPoints = 0;
GLUnurbsObj *theNurb;
/*
* Initializes the control points of the surface to a small hill.
* The control points range from -3 to +3 in x, y, and z
*/
static void init_surface(void)
{
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;
}
}
}
static void CALLBACK nurbsError(GLenum errorCode)
{
const GLubyte *estring;
estring = gluErrorString(errorCode);
fprintf (stderr, "Nurbs Error: %s\n", estring);
exit (0);
}
static void CALLBACK beginCallback(GLenum whichType)
{
glBegin (whichType); /* resubmit rendering directive */
printf ("glBegin(");
switch (whichType) { /* print diagnostic message */
case GL_LINES:
printf ("GL_LINES)\n");
break;
case GL_LINE_LOOP:
printf ("GL_LINE_LOOP)\n");
break;
case GL_LINE_STRIP:
printf ("GL_LINE_STRIP)\n");
break;
case GL_TRIANGLES:
printf ("GL_TRIANGLES)\n");
break;
case GL_TRIANGLE_STRIP:
printf ("GL_TRIANGLE_STRIP)\n");
break;
case GL_TRIANGLE_FAN:
printf ("GL_TRIANGLE_FAN)\n");
break;
case GL_QUADS:
printf ("GL_QUADS)\n");
break;
case GL_QUAD_STRIP:
printf ("GL_QUAD_STRIP)\n");
break;
case GL_POLYGON:
printf ("GL_POLYGON)\n");
break;
default:
break;
}
}
static void CALLBACK endCallback()
{
glEnd(); /* resubmit rendering directive */
printf ("glEnd()\n");
}
static void CALLBACK vertexCallback(GLfloat *vertex)
{
glVertex3fv(vertex); /* resubmit rendering directive */
printf ("glVertex3f (%5.3f, %5.3f, %5.3f)\n",
vertex[0], vertex[1], vertex[2]);
}
static void CALLBACK normalCallback(GLfloat *normal)
{
glNormal3fv(normal); /* resubmit rendering directive */
printf ("glNormal3f (%5.3f, %5.3f, %5.3f)\n",
normal[0], normal[1], normal[2]);
}
/* Initialize material property and depth buffer.
*/
static void init(void)
{
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_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_DEPTH_TEST);
glEnable(GL_AUTO_NORMAL);
glEnable(GL_NORMALIZE);
init_surface();
theNurb = gluNewNurbsRenderer();
gluNurbsProperty(theNurb, GLU_NURBS_MODE,
GLU_NURBS_TESSELLATOR);
gluNurbsProperty(theNurb, GLU_SAMPLING_TOLERANCE, 25.0);
gluNurbsProperty(theNurb, GLU_DISPLAY_MODE, GLU_FILL);
gluNurbsCallback(theNurb, GLU_ERROR, nurbsError);
gluNurbsCallback(theNurb, GLU_NURBS_BEGIN, beginCallback);
gluNurbsCallback(theNurb, GLU_NURBS_VERTEX, vertexCallback);
gluNurbsCallback(theNurb, GLU_NURBS_NORMAL, normalCallback);
gluNurbsCallback(theNurb, GLU_NURBS_END, endCallback);
}
static void display(void)
{
GLfloat knots[8] = {0.0, 0.0, 0.0, 0.0, 1.0, 1.0, 1.0, 1.0};
int i, j;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glPushMatrix();
glRotatef(330.0, 1.,0.,0.);
glScalef (0.5, 0.5, 0.5);
gluBeginSurface(theNurb);
gluNurbsSurface(theNurb,
8, knots, 8, knots,
4 * 3, 3, &ctlpoints[0][0][0],
4, 4, GL_MAP2_VERTEX_3);
gluEndSurface(theNurb);
if (showPoints) {
glPointSize(5.0);
glDisable(GL_LIGHTING);
glColor3f(1.0, 1.0, 0.0);
glBegin(GL_POINTS);
for (i = 0; i < 4; i++) {
for (j = 0; j < 4; j++) {
glVertex3f(ctlpoints[i][j][0],
ctlpoints[i][j][1], ctlpoints[i][j][2]);
}
}
glEnd();
glEnable(GL_LIGHTING);
}
glPopMatrix();
glFlush();
}
static void reshape(int w, int h)
{
glViewport(0, 0, (GLsizei) w, (GLsizei) h);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective (45.0, (GLdouble)w/(GLdouble)h, 3.0, 8.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef (0.0, 0.0, -5.0);
}
static void keyboard(unsigned char key, int x, int y)
{
switch (key) {
case 'c':
case 'C':
showPoints = !showPoints;
glutPostRedisplay();
break;
case 27:
exit(0);
break;
default:
break;
}
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB | GLUT_DEPTH);
glutInitWindowSize (500, 500);
glutInitWindowPosition (100, 100);
glutCreateWindow(argv[0]);
init();
glutReshapeFunc(reshape);
glutDisplayFunc(display);
glutKeyboardFunc (keyboard);
glutMainLoop();
return 0;
}
#else
int main(int argc, char** argv)
{
fprintf (stderr, "This program demonstrates a feature which is introduced in the\n");
fprintf (stderr, "OpenGL Utility Library (GLU) Version 1.3.\n");
fprintf (stderr, "If your implementation of GLU has the right extensions,\n");
fprintf (stderr, "you may be able to modify this program to make it run.\n");
return 0;
}
#endif