src/Jitter.h

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/*
This file is part of Teapot Colony Wars.

Teapot Colony Wars is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.

Teapot Colony Wars is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Teapot Colony Wars.  If not, see <http://www.gnu.org/licenses/>.
*/

/*
 * (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 * Unpublished-- rights reserved under the copyright laws of the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.
 */

#ifndef JITTER_H
#define JITTER_H

/*
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.
*/

#include <GL/glut.h>

#define MAX_SAMPLES 66

#define MAX_JITTERS 7

typedef struct _jitter_point {
  GLfloat x;
  GLfloat y;
} jitter_point;

typedef struct _jitter_set {
  const int nb;
  jitter_point* jitter_points;
} jitter_set;


jitter_point j_1[] =
{
  {0.0, 0.0}
};

jitter_point j_2[] =
{
  { 0.246490,  0.249999},
  {-0.246490, -0.249999}
};


jitter_point j_3[] =
{
  {-0.373411, -0.250550},
  { 0.256263,  0.368119},
  { 0.117148, -0.117570}
};


jitter_point j_4[] =
{
  {-0.208147,  0.353730},
  { 0.203849, -0.353780},
  {-0.292626, -0.149945},
  { 0.296924,  0.149994}
};


jitter_point j_8[] =
{
  {-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}
};


jitter_point j_15[] =
{
  { 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}
};


jitter_point j_24[] =
{
  { 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}
};


jitter_point j_66[] =
{
  { 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}
};

jitter_set j[] =
{
  { 1, j_1},
  { 2, j_2},
  { 3, j_3},
  { 4, j_4},
  { 8, j_8},
  {15, j_15},
  {24, j_24},
  {66, j_66}
};

#endif // JITTER_H

---