52 lines
2.5 KiB
C
52 lines
2.5 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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short int newcircle[NMAXCIRCLES]; /* takes value 1 when circle has just been hit */
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int circlecolor[NMAXCIRCLES]; /* color of circular scatterer */
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int ncircles = NMAXCIRCLES; /* actual number of circles, can be decreased e.g. for random patterns */
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double x_shooter = -0.2, y_shooter = -0.6, x_target = 0.4, y_target = 0.7;
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/* shooter and target positions for "laser in room of mirrors" simulations, with default values for square domain */
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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_PARABOLAS 15 /* polygon with parabolic sides */
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#define D_PENROSE 16 /* Penrose solution to illumination problem */
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#define D_CIRCLES 20 /* several circles */
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#define D_CIRCLES_IN_RECT 21 /* several circles inside a rectangle */
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#define D_CIRCLES_IN_GENUSN 22 /* several circles in polygon with identified opposite sides */
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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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#define C_TRI 21 /* equilateral triangular grid of circles */
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#define C_GOLDEN_MEAN 3 /* golden mean grid */
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#define C_GOLDEN_SPIRAL 4 /* golden spiral (sunflower) grid */
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#define C_RAND_DISPLACED 5 /* randomly displaced square grid */
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#define C_RAND_POISSON 6 /* random Poisson point process */
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#define C_POISSON_DISC 7 /* Poisson disc sampling */
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#define C_LASER 11 /* laser fight in a room of mirrors */
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#define C_LASER_GENUSN 12 /* laser fight in a translation surface */ |