summaryrefslogtreecommitdiffstats
path: root/progs/redbook/jitter.h
diff options
context:
space:
mode:
authorjtg <jtg>1999-08-19 00:55:39 +0000
committerjtg <jtg>1999-08-19 00:55:39 +0000
commitafb833d4e89c312460a4ab9ed6a7a8ca4ebbfe1c (patch)
tree59d65b4da12fb5379224cf5f6b808fde91523c7f /progs/redbook/jitter.h
parentf2544d4920ce168bec9cd94d774b7ea5103a3d74 (diff)
Initial revision
Diffstat (limited to 'progs/redbook/jitter.h')
-rw-r--r--progs/redbook/jitter.h222
1 files changed, 222 insertions, 0 deletions
diff --git a/progs/redbook/jitter.h b/progs/redbook/jitter.h
new file mode 100644
index 00000000000..1ec08c87fd4
--- /dev/null
+++ b/progs/redbook/jitter.h
@@ -0,0 +1,222 @@
+/*
+ * (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+ * Unpublished-- rights reserved under the copyright laws of the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.
+ */
+/*
+jitter.h
+
+This file contains jitter point arrays for 2,3,4,8,15,24 and 66 jitters.
+
+The arrays are named j2, j3, etc. Each element in the array has the form,
+for example, j8[0].x and j8[0].y
+
+Values are floating point in the range -.5 < x < .5, -.5 < y < .5, and
+have a gaussian distribution around the origin.
+
+Use these to do model jittering for scene anti-aliasing and view volume
+jittering for depth of field effects. Use in conjunction with the
+accwindow() routine.
+*/
+
+typedef struct
+{
+ GLfloat x, y;
+} jitter_point;
+
+#define MAX_SAMPLES 66
+
+
+/* 2 jitter points */
+jitter_point j2[] =
+{
+ { 0.246490, 0.249999},
+ {-0.246490, -0.249999}
+};
+
+
+/* 3 jitter points */
+jitter_point j3[] =
+{
+ {-0.373411, -0.250550},
+ { 0.256263, 0.368119},
+ { 0.117148, -0.117570}
+};
+
+
+/* 4 jitter points */
+jitter_point j4[] =
+{
+ {-0.208147, 0.353730},
+ { 0.203849, -0.353780},
+ {-0.292626, -0.149945},
+ { 0.296924, 0.149994}
+};
+
+
+/* 8 jitter points */
+jitter_point j8[] =
+{
+ {-0.334818, 0.435331},
+ { 0.286438, -0.393495},
+ { 0.459462, 0.141540},
+ {-0.414498, -0.192829},
+ {-0.183790, 0.082102},
+ {-0.079263, -0.317383},
+ { 0.102254, 0.299133},
+ { 0.164216, -0.054399}
+};
+
+
+/* 15 jitter points */
+jitter_point j15[] =
+{
+ { 0.285561, 0.188437},
+ { 0.360176, -0.065688},
+ {-0.111751, 0.275019},
+ {-0.055918, -0.215197},
+ {-0.080231, -0.470965},
+ { 0.138721, 0.409168},
+ { 0.384120, 0.458500},
+ {-0.454968, 0.134088},
+ { 0.179271, -0.331196},
+ {-0.307049, -0.364927},
+ { 0.105354, -0.010099},
+ {-0.154180, 0.021794},
+ {-0.370135, -0.116425},
+ { 0.451636, -0.300013},
+ {-0.370610, 0.387504}
+};
+
+
+/* 24 jitter points */
+jitter_point j24[] =
+{
+ { 0.030245, 0.136384},
+ { 0.018865, -0.348867},
+ {-0.350114, -0.472309},
+ { 0.222181, 0.149524},
+ {-0.393670, -0.266873},
+ { 0.404568, 0.230436},
+ { 0.098381, 0.465337},
+ { 0.462671, 0.442116},
+ { 0.400373, -0.212720},
+ {-0.409988, 0.263345},
+ {-0.115878, -0.001981},
+ { 0.348425, -0.009237},
+ {-0.464016, 0.066467},
+ {-0.138674, -0.468006},
+ { 0.144932, -0.022780},
+ {-0.250195, 0.150161},
+ {-0.181400, -0.264219},
+ { 0.196097, -0.234139},
+ {-0.311082, -0.078815},
+ { 0.268379, 0.366778},
+ {-0.040601, 0.327109},
+ {-0.234392, 0.354659},
+ {-0.003102, -0.154402},
+ { 0.297997, -0.417965}
+};
+
+
+/* 66 jitter points */
+jitter_point j66[] =
+{
+ { 0.266377, -0.218171},
+ {-0.170919, -0.429368},
+ { 0.047356, -0.387135},
+ {-0.430063, 0.363413},
+ {-0.221638, -0.313768},
+ { 0.124758, -0.197109},
+ {-0.400021, 0.482195},
+ { 0.247882, 0.152010},
+ {-0.286709, -0.470214},
+ {-0.426790, 0.004977},
+ {-0.361249, -0.104549},
+ {-0.040643, 0.123453},
+ {-0.189296, 0.438963},
+ {-0.453521, -0.299889},
+ { 0.408216, -0.457699},
+ { 0.328973, -0.101914},
+ {-0.055540, -0.477952},
+ { 0.194421, 0.453510},
+ { 0.404051, 0.224974},
+ { 0.310136, 0.419700},
+ {-0.021743, 0.403898},
+ {-0.466210, 0.248839},
+ { 0.341369, 0.081490},
+ { 0.124156, -0.016859},
+ {-0.461321, -0.176661},
+ { 0.013210, 0.234401},
+ { 0.174258, -0.311854},
+ { 0.294061, 0.263364},
+ {-0.114836, 0.328189},
+ { 0.041206, -0.106205},
+ { 0.079227, 0.345021},
+ {-0.109319, -0.242380},
+ { 0.425005, -0.332397},
+ { 0.009146, 0.015098},
+ {-0.339084, -0.355707},
+ {-0.224596, -0.189548},
+ { 0.083475, 0.117028},
+ { 0.295962, -0.334699},
+ { 0.452998, 0.025397},
+ { 0.206511, -0.104668},
+ { 0.447544, -0.096004},
+ {-0.108006, -0.002471},
+ {-0.380810, 0.130036},
+ {-0.242440, 0.186934},
+ {-0.200363, 0.070863},
+ {-0.344844, -0.230814},
+ { 0.408660, 0.345826},
+ {-0.233016, 0.305203},
+ { 0.158475, -0.430762},
+ { 0.486972, 0.139163},
+ {-0.301610, 0.009319},
+ { 0.282245, -0.458671},
+ { 0.482046, 0.443890},
+ {-0.121527, 0.210223},
+ {-0.477606, -0.424878},
+ {-0.083941, -0.121440},
+ {-0.345773, 0.253779},
+ { 0.234646, 0.034549},
+ { 0.394102, -0.210901},
+ {-0.312571, 0.397656},
+ { 0.200906, 0.333293},
+ { 0.018703, -0.261792},
+ {-0.209349, -0.065383},
+ { 0.076248, 0.478538},
+ {-0.073036, -0.355064},
+ { 0.145087, 0.221726}
+};