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Diffstat (limited to 'progs/redbook/unproject.c')
-rw-r--r-- | progs/redbook/unproject.c | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/progs/redbook/unproject.c b/progs/redbook/unproject.c deleted file mode 100644 index 6d1c7dbede..0000000000 --- a/progs/redbook/unproject.c +++ /dev/null @@ -1,126 +0,0 @@ -/* - * 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 - * Unpublished-- rights reserved under the copyright laws of the - * United States.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. - */ - -/* - * unproject.c - * When the left mouse button is pressed, this program - * reads the mouse position and determines two 3D points - * from which it was transformed. Very little is displayed. - */ -#include <GL/glut.h> -#include <stdlib.h> -#include <stdio.h> - -static void display(void) -{ - glClear(GL_COLOR_BUFFER_BIT); - glFlush(); -} - -/* Change these values for a different transformation */ -static void reshape(int w, int h) -{ - glViewport (0, 0, (GLsizei) w, (GLsizei) h); - glMatrixMode(GL_PROJECTION); - glLoadIdentity(); - gluPerspective (45.0, (GLfloat) w/(GLfloat) h, 1.0, 100.0); - glMatrixMode(GL_MODELVIEW); - glLoadIdentity(); -} - -static void mouse(int button, int state, int x, int y) -{ - GLint viewport[4]; - GLdouble mvmatrix[16], projmatrix[16]; - GLint realy; /* OpenGL y coordinate position */ - GLdouble wx, wy, wz; /* returned world x, y, z coords */ - - switch (button) { - case GLUT_LEFT_BUTTON: - if (state == GLUT_DOWN) { - glGetIntegerv (GL_VIEWPORT, viewport); - glGetDoublev (GL_MODELVIEW_MATRIX, mvmatrix); - glGetDoublev (GL_PROJECTION_MATRIX, projmatrix); -/* note viewport[3] is height of window in pixels */ - realy = viewport[3] - (GLint) y - 1; - printf ("Coordinates at cursor are (%4d, %4d)\n", x, realy); - gluUnProject ((GLdouble) x, (GLdouble) realy, 0.0, - mvmatrix, projmatrix, viewport, &wx, &wy, &wz); - printf ("World coords at z=0.0 are (%f, %f, %f)\n", - wx, wy, wz); - gluUnProject ((GLdouble) x, (GLdouble) realy, 1.0, - mvmatrix, projmatrix, viewport, &wx, &wy, &wz); - printf ("World coords at z=1.0 are (%f, %f, %f)\n", - wx, wy, wz); - } - break; - case GLUT_RIGHT_BUTTON: - if (state == GLUT_DOWN) - exit(0); - break; - default: - break; - } -} - -/* ARGSUSED1 */ -static void keyboard(unsigned char key, int x, int y) -{ - switch (key) { - case 27: - exit(0); - break; - } -} - -/* - * Open window, register input callback functions - */ -int main(int argc, char** argv) -{ - glutInit(&argc, argv); - glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB); - glutInitWindowSize (500, 500); - glutInitWindowPosition (100, 100); - glutCreateWindow (argv[0]); - glutDisplayFunc(display); - glutReshapeFunc(reshape); - glutKeyboardFunc (keyboard); - glutMouseFunc(mouse); - glutMainLoop(); - return 0; -} |