daviddoji/YouTube-simulations
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nilsberglund-orleans
2021-09-26 16:47:29 +02:00
committed by GitHub
parent 70440115ee
commit c73cbe10a0
10 changed files with 2597 additions and 79 deletions
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45
particle_billiard.c
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@@ -44,23 +44,29 @@
/* Choice of the billiard table, see global_particles.c */
#define B_DOMAIN 20 /* choice of domain shape */
#define B_DOMAIN 16 /* choice of domain shape */
#define CIRCLE_PATTERN 2 /* pattern of circles */
#define ABSORBING_CIRCLES 0 /* set to 1 for circular scatterers to be absorbing */
#define NMAXCIRCLES 1000 /* total number of circles (must be at least NCX*NCY for square grid) */
#define NCX 15 /* number of circles in x direction */
// #define NCX 10 /* number of circles in x direction */
// #define NCY 10 /* number of circles in y direction */
#define NCX 30 /* number of circles in x direction */
#define NCY 20 /* number of circles in y direction */
#define NPOISSON 500 /* number of points for Poisson C_RAND_POISSON arrangement */
#define NGOLDENSPIRAL 2000 /* max number of points for C_GOLDEN_SPIRAL arrandement */
#define LAMBDA 0.75 /* parameter controlling shape of billiard */
#define MU 0.035 /* second parameter controlling shape of billiard */
// #define LAMBDA 1.4 /* parameter controlling shape of domain */
// #define MU 0.2 /* second parameter controlling shape of billiard */
#define LAMBDA 1.5 /* parameter controlling shape of domain */
#define MU 0.3 /* second parameter controlling shape of billiard */
#define FOCI 1 /* set to 1 to draw focal points of ellipse */
#define NPOLY 8 /* number of sides of polygon */
#define APOLY 0.25 /* angle by which to turn polygon, in units of Pi/2 */
#define NPOLY 4 /* number of sides of polygon */
#define APOLY 0.0 /* angle by which to turn polygon, in units of Pi/2 */
#define DRAW_BILLIARD 1 /* set to 1 to draw billiard */
#define DRAW_CONSTRUCTION_LINES 1 /* set to 1 to draw additional construction lines for billiard */
#define DRAW_CONSTRUCTION_LINES 0 /* set to 1 to draw additional construction lines for billiard */
#define PERIODIC_BC 0 /* set to 1 to enforce periodic boundary conditions when drawing particles */
#define RESAMPLE 0 /* set to 1 if particles should be added when dispersion too large */
@@ -68,16 +74,16 @@
/* Simulation parameters */
#define NPART 30000 /* number of particles */
#define NPART 10000 /* number of particles */
#define NPARTMAX 100000 /* maximal number of particles after resampling */
#define LMAX 0.01 /* minimal segment length triggering resampling */
#define DMIN 0.02 /* minimal distance to boundary for triggering resampling */
#define CYCLE 1 /* set to 1 for closed curve (start in all directions) */
#define SHOWTRAILS 0 /* set to 1 to keep trails of the particles */
#define NSTEPS 3000 /* number of frames of movie */
#define TIME 1000 /* time between movie frames, for fluidity of real-time simulation */
#define DPHI 0.000005 /* integration step */
#define NSTEPS 3500 /* number of frames of movie */
#define TIME 1200 /* time between movie frames, for fluidity of real-time simulation */
#define DPHI 0.00001 /* integration step */
#define NVID 150 /* number of iterations between images displayed on screen */
/* Decreasing TIME accelerates the animation and the movie */
@@ -88,12 +94,12 @@
/* Colors and other graphical parameters */
#define NCOLORS 32 /* number of colors */
#define NCOLORS 16 /* number of colors */
#define COLORSHIFT 0 /* hue of initial color */
#define RAINBOW_COLOR 0 /* set to 1 to use different colors for all particles */
#define FLOWER_COLOR 0 /* set to 1 to adapt initial colors to flower billiard (tracks vs core) */
#define NSEG 100 /* number of segments of boundary */
#define LENGTH 0.02 /* length of velocity vectors */
#define LENGTH 0.01 /* length of velocity vectors */
#define BILLIARD_WIDTH 2 /* width of billiard */
#define PARTICLE_WIDTH 2 /* width of particles */
#define FRONT_WIDTH 3 /* width of wave front */
@@ -102,7 +108,7 @@
#define COLOR_OUTSIDE 0 /* set to 1 for colored outside */
#define OUTER_COLOR 270.0 /* color outside billiard */
#define PAINT_INT 0 /* set to 1 to paint interior in other color (for polygon/Reuleaux) */
#define PAINT_EXT 1 /* set to 1 to paint exterior */
#define PAUSE 1000 /* number of frames after which to pause */
#define PSLEEP 1 /* sleep time during pause */
@@ -326,7 +332,7 @@ void graph_movie(int time, int color[NPARTMAX], double *configs[NPARTMAX], int a
{
// printf("reflecting particle %i\n", i);
c = vbilliard(configs[i]);
// if (c>=0) color[i]++;
if (c>=0) color[i]++;
if (!RAINBOW_COLOR)
{
color[i]++;
@@ -368,14 +374,17 @@ void animation()
r = cos(PI/(double)NPOLY)/cos(DPI/(double)NPOLY);
// init_line_config(-1.25, -0.5, -1.25, 0.5, 0.0, configs);
// init_drop_config(-0.75, 0.0, -0.1, 0.1, configs);
// init_drop_config(0.5, 0.7, 0.0, DPI, configs);
// init_drop_config(-1.3, -0.1, 0.0, DPI, configs);
init_drop_config(1.4, 0.1, 0.0, DPI, configs);
// init_drop_config(0.5, 0.5, -1.0, 1.0, configs);
// init_sym_drop_config(-1.0, 0.5, -PID, PID, configs);
// init_drop_config(-0.999, 0.0, -alpha, alpha, configs);
// other possible initial conditions :
init_line_config(-1.25, -0.5, -1.25, 0.5, 0.0, configs);
// init_line_config(0.0, -0.5, 0.0, 0.5, 0.0, configs);
// init_line_config(-1.3, -0.3, -1.2, -0.3, PID, configs);
// init_line_config(0.0, 0.0, 0.5, 0.0, PID, configs);
// init_line_config(0.0, 0.0, 0.0, -0.5, PI, configs);
// init_line_config(-1.25, -0.5, -1.25, 0.5, 0.0*PID, configs);
// init_line_config(-1.0, -0.3, -1.0, 0.3, 0.0, configs);
// init_line_config(-0.7, -0.45, -0.7, 0.45, 0.0, configs);