diff options
author | jtg <jtg> | 1999-08-19 00:55:39 +0000 |
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committer | jtg <jtg> | 1999-08-19 00:55:39 +0000 |
commit | afb833d4e89c312460a4ab9ed6a7a8ca4ebbfe1c (patch) | |
tree | 59d65b4da12fb5379224cf5f6b808fde91523c7f /progs/redbook/jitter.h | |
parent | f2544d4920ce168bec9cd94d774b7ea5103a3d74 (diff) |
Initial revision
Diffstat (limited to 'progs/redbook/jitter.h')
-rw-r--r-- | progs/redbook/jitter.h | 222 |
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 + * Unpublished-- rights reserved under the copyright laws of the + * United States.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} +}; |