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#define _USE_MATH_DEFINES |
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#include <math.h> |
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#include "fvect.h" |
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/* |
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This transforms points on [0,1]^2 to points on unit disk centered at |
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/* Map a [0,1]^2 square to a unit radius disk */ |
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void |
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SDsquare2disk(double ds[2], double seedx, double seedy) |
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square2disk(RREAL ds[2], double seedx, double seedy) |
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{ |
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double phi, r; |
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/* Map point on unit disk to a unit square in [0,1]^2 range */ |
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void |
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SDdisk2square(double sq[2], double diskx, double disky) |
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disk2square(RREAL sq[2], double diskx, double disky) |
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{ |
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double r = sqrt( diskx*diskx + disky*disky ); |
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double phi = atan2( disky, diskx ); |