34 lines
1.4 KiB
C
34 lines
1.4 KiB
C
double circlex[NMAXCIRCLES], circley[NMAXCIRCLES], circlerad[NMAXCIRCLES]; /* position and radius of circular scatters */
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short int circleactive[NMAXCIRCLES]; /* tells which circular scatters are active */
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int ncircles = NMAXCIRCLES; /* actual number of circles, can be decreased e.g. for random patterns */
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/* some basic math */
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#define PI 3.141592654
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#define DPI 6.283185307
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#define PID 1.570796327
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/* Choice of the billiard table */
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#define D_RECTANGLE 0 /* rectangular domain */
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#define D_ELLIPSE 1 /* elliptical domain */
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#define D_STADIUM 2 /* stadium-shaped domain */
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#define D_SINAI 3 /* Sinai billiard */
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#define D_DIAMOND 4 /* diamond-shaped billiard */
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#define D_TRIANGLE 5 /* triangular billiard */
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#define D_ANNULUS 7 /* annulus */
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#define D_POLYGON 8 /* polygon */
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#define D_REULEAUX 9 /* Reuleaux and star shapes */
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#define D_FLOWER 10 /* Bunimovich flower */
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#define D_ALT_REU 11 /* alternating between star and Reuleaux */
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#define D_ANGLE 12 /* angular sector */
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#define D_LSHAPE 13 /* L-shaped billiard for conical singularity */
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#define D_GENUSN 14 /* polygon with identifies opposite sides */
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#define D_CIRCLES 20 /* several circles */
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#define C_FOUR_CIRCLES 0 /* four circles almost touching each other */
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#define C_SQUARE 1 /* square grid of circles */
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#define C_HEX 2 /* hexagonal/triangular grid of circles */
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