moved shadow code into teapot.c

1 files changed, 0 insertions, 119 deletions

diff --git a/progs/demos/shadow.c b/progs/demos/shadow.c
deleted file mode 100644
index 0f66b538d7..0000000000
--- a/progs/demos/shadow.c
+++ /dev/null
@@ -1,119 +0,0 @@
-/**
-(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  Unpublished-- rights reserved under the copyright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.
-*/
-
-/* Taken from the projshadow.c - by Tom McReynolds, SGI */
-
-/* Modified by David Bucciarelli */
-
-/* Rendering shadows using projective shadows. */
-
-#include <GL/glut.h>
-#include "shadow.h"
-
-
-enum {
-  X, Y, Z, W
-};
-enum {
-  A, B, C, D
-};
-
-/* create a matrix that will project the desired shadow */
-void
-shadowmatrix(GLfloat shadowMat[4][4],
-  GLfloat groundplane[4],
-  GLfloat lightpos[4])
-{
-  GLfloat dot;
-
-  /* find dot product between light position vector and ground plane normal */
-  dot = groundplane[X] * lightpos[X] +
-    groundplane[Y] * lightpos[Y] +
-    groundplane[Z] * lightpos[Z] +
-    groundplane[W] * lightpos[W];
-
-  shadowMat[0][0] = dot - lightpos[X] * groundplane[X];
-  shadowMat[1][0] = 0.f - lightpos[X] * groundplane[Y];
-  shadowMat[2][0] = 0.f - lightpos[X] * groundplane[Z];
-  shadowMat[3][0] = 0.f - lightpos[X] * groundplane[W];
-
-  shadowMat[X][1] = 0.f - lightpos[Y] * groundplane[X];
-  shadowMat[1][1] = dot - lightpos[Y] * groundplane[Y];
-  shadowMat[2][1] = 0.f - lightpos[Y] * groundplane[Z];
-  shadowMat[3][1] = 0.f - lightpos[Y] * groundplane[W];
-
-  shadowMat[X][2] = 0.f - lightpos[Z] * groundplane[X];
-  shadowMat[1][2] = 0.f - lightpos[Z] * groundplane[Y];
-  shadowMat[2][2] = dot - lightpos[Z] * groundplane[Z];
-  shadowMat[3][2] = 0.f - lightpos[Z] * groundplane[W];
-
-  shadowMat[X][3] = 0.f - lightpos[W] * groundplane[X];
-  shadowMat[1][3] = 0.f - lightpos[W] * groundplane[Y];
-  shadowMat[2][3] = 0.f - lightpos[W] * groundplane[Z];
-  shadowMat[3][3] = dot - lightpos[W] * groundplane[W];
-
-}
-
-/* find the plane equation given 3 points */
-void
-findplane(GLfloat plane[4],
-  GLfloat v0[3], GLfloat v1[3], GLfloat v2[3])
-{
-  GLfloat vec0[3], vec1[3];
-
-  /* need 2 vectors to find cross product */
-  vec0[X] = v1[X] - v0[X];
-  vec0[Y] = v1[Y] - v0[Y];
-  vec0[Z] = v1[Z] - v0[Z];
-
-  vec1[X] = v2[X] - v0[X];
-  vec1[Y] = v2[Y] - v0[Y];
-  vec1[Z] = v2[Z] - v0[Z];
-
-  /* find cross product to get A, B, and C of plane equation */
-  plane[A] = vec0[Y] * vec1[Z] - vec0[Z] * vec1[Y];
-  plane[B] = -(vec0[X] * vec1[Z] - vec0[Z] * vec1[X]);
-  plane[C] = vec0[X] * vec1[Y] - vec0[Y] * vec1[X];
-
-  plane[D] = -(plane[A] * v0[X] + plane[B] * v0[Y] + plane[C] * v0[Z]);
-}