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. 
*/ 
 
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} 
};