OpenGLUT 0.6.3 development - OpenGLUT: quadric.c File Reference
Keywords: OpenGLUT, FreeGLUT, OpenGL, GLUT, X11, Windows, Programming, Documentation, Download, Development, Sourceforge

OpenGLUT Documentation
Introduction | Documentation | Examples | Proposals | Authors | Copying | Todo | Bugs | Links

# quadric.c File Reference

## Detailed Description

This program demonstrates the use of some of the gluQuadric* routines.

Quadric objects are created with some quadric properties and the callback routine to handle errors.

Note that the cylinder has no top or bottom and the circle has a hole in it.

    /*
     * Copyright (c) 1993-1997, 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     * Unpublished-- rights reserved under the copyright laws of the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(R) is a registered trademark of Silicon Graphics, Inc.
     */

    #include <GL/openglut.h>
    #include <stdio.h>
    #include <stdlib.h>

    /* Win32 calling conventions. */
    #ifndef CALLBACK
    #define CALLBACK
    #endif

    GLuint startList;

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

       estring = gluErrorString(errorCode);
       fprintf(stderr, "Quadric Error: %s\n", estring);
       exit(0);
    }

    void init(void)
    {
       GLUquadricObj *qobj;
       GLfloat mat_ambient[] = { 0.5, 0.5, 0.5, 1.0 };
       GLfloat mat_specular[] = { 1.0, 1.0, 1.0, 1.0 };
       GLfloat mat_shininess[] = { 50.0 };
       GLfloat light_position[] = { 1.0, 1.0, 1.0, 0.0 };
       GLfloat model_ambient[] = { 0.5, 0.5, 0.5, 1.0 };

       glClearColor(0.0, 0.0, 0.0, 0.0);

       glMaterialfv(GL_FRONT, GL_AMBIENT, mat_ambient);
       glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
       glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess);
       glLightfv(GL_LIGHT0, GL_POSITION, light_position);
       glLightModelfv(GL_LIGHT_MODEL_AMBIENT, model_ambient);

       glEnable(GL_LIGHTING);
       glEnable(GL_LIGHT0);
       glEnable(GL_DEPTH_TEST);

    /*  Create 4 display lists, each with a different quadric object.
     *  Different drawing styles and surface normal specifications
     *  are demonstrated.
     */
       startList = glGenLists(4);
       qobj = gluNewQuadric();
       gluQuadricCallback(qobj, GLU_ERROR,
                          (GLvoid (CALLBACK*) ()) errorCallback);

       gluQuadricDrawStyle(qobj, GLU_FILL); /* smooth shaded */
       gluQuadricNormals(qobj, GLU_SMOOTH);
       glNewList(startList, GL_COMPILE);
          gluSphere(qobj, 0.75, 15, 10);
       glEndList();

       gluQuadricDrawStyle(qobj, GLU_FILL); /* flat shaded */
       gluQuadricNormals(qobj, GLU_FLAT);
       glNewList(startList+1, GL_COMPILE);
          gluCylinder(qobj, 0.5, 0.3, 1.0, 15, 5);
       glEndList();

       gluQuadricDrawStyle(qobj, GLU_LINE); /* all polygons wireframe */
       gluQuadricNormals(qobj, GLU_NONE);
       glNewList(startList+2, GL_COMPILE);
          gluDisk(qobj, 0.25, 1.0, 20, 4);
       glEndList();

       gluQuadricDrawStyle(qobj, GLU_SILHOUETTE); /* boundary only  */
       gluQuadricNormals(qobj, GLU_NONE);
       glNewList(startList+3, GL_COMPILE);
          gluPartialDisk(qobj, 0.0, 1.0, 20, 4, 0.0, 225.0);
       glEndList();
    }

    void display(void)
    {
       glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
       glPushMatrix();

       glEnable(GL_LIGHTING);
       glShadeModel (GL_SMOOTH);
       glTranslatef(-1.0, -1.0, 0.0);
       glCallList(startList);

       glShadeModel (GL_FLAT);
       glTranslatef(0.0, 2.0, 0.0);
       glPushMatrix();
       glRotatef(300.0, 1.0, 0.0, 0.0);
       glCallList(startList+1);
       glPopMatrix();

       glDisable(GL_LIGHTING);
       glColor3f(0.0, 1.0, 1.0);
       glTranslatef(2.0, -2.0, 0.0);
       glCallList(startList+2);

       glColor3f(1.0, 1.0, 0.0);
       glTranslatef(0.0, 2.0, 0.0);
       glCallList(startList+3);

       glPopMatrix();
       glFlush();
    }

    void reshape (int w, int h)
    {
       glViewport(0, 0, (GLsizei) w, (GLsizei) h);
       glMatrixMode(GL_PROJECTION);
       glLoadIdentity();
       if (w <= h)
          glOrtho(-2.5, 2.5, -2.5*(GLfloat)h/(GLfloat)w,
             2.5*(GLfloat)h/(GLfloat)w, -10.0, 10.0);
       else
          glOrtho(-2.5*(GLfloat)w/(GLfloat)h,
             2.5*(GLfloat)w/(GLfloat)h, -2.5, 2.5, -10.0, 10.0);
       glMatrixMode(GL_MODELVIEW);
       glLoadIdentity();
    }

    /* ARGSUSED1 */
    void keyboard(unsigned char key, int x, int y)
    {
       switch (key) {
          case 27:
             exit(0);
             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();
       glutDisplayFunc(display);
       glutReshapeFunc(reshape);
       glutKeyboardFunc(keyboard);
       glutMainLoop();
       return 0;
    }

OpenGLUT Development @ Sourceforge
Homepage | Summary | Files | CVS | Forums | Lists | Bugs | RFE
Generated on Tue Oct 5 18:44:25 2004 for OpenGLUT by doxygen 1.3.8
The OpenGLUT project is hosted by sourceforge.net.