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Nils Berglund
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101
wave_3d.c
101
wave_3d.c
@@ -45,44 +45,47 @@
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#define MOVIE 0 /* set to 1 to generate movie */
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#define DOUBLE_MOVIE 1 /* set to 1 to produce movies for wave height and energy simultaneously */
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#define SAVE_MEMORY 0 /* set to 1 to save memory when writing tiff images */
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/* General geometrical parameters */
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#define WINWIDTH 1920 /* window width */
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#define WINHEIGHT 1000 /* window height */
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#define NX 2000 /* number of grid points on x axis */
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#define NY 2000 /* number of grid points on y axis */
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#define NX 2500 /* number of grid points on x axis */
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#define NY 1250 /* number of grid points on y axis */
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// #define NX 2700 /* number of grid points on x axis */
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// #define NY 1350 /* number of grid points on y axis */
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// // #define YMIN -1.041666667
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// // #define YMAX 1.041666667 /* y interval for 9/16 aspect ratio */
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// #define XMIN -2.0
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// #define XMAX 2.0 /* x interval */
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// #define YMIN -1.041666667
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// #define YMAX 1.041666667 /* y interval for 9/16 aspect ratio */
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#define XMIN -2.0
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#define XMAX 2.0 /* x interval */
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#define YMIN -1.041666667
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#define YMAX 1.041666667 /* y interval for 9/16 aspect ratio */
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#define HIGHRES 1 /* set to 1 if resolution of grid is double that of displayed image */
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// #define WINWIDTH 1280 /* window width */
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// #define WINHEIGHT 720 /* window height */
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// // //
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// #define NX 1500 /* number of grid points on x axis */
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// #define NY 1500 /* number of grid points on y axis */
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//
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// // #define NX 1280 /* number of grid points on x axis */
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// // #define NY 720 /* number of grid points on y axis */
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// #define NX 2560 /* number of grid points on x axis */
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// #define NY 1440 /* number of grid points on y axis */
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//
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// // #define NX 640 /* number of grid points on x axis */
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// // #define NY 360 /* number of grid points on y axis */
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//
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#define XMIN -1.4
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#define XMAX 1.4 /* x interval */
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#define YMIN -1.4
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#define YMAX 1.4 /* y interval for 9/16 aspect ratio */
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//
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// #define XMIN -2.0
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// #define XMAX 2.0 /* x interval */
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// #define YMIN -1.125
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// #define YMAX 1.125 /* y interval for 9/16 aspect ratio */
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#define JULIA_SCALE 0.8 /* scaling for Julia sets */
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/* Choice of the billiard table */
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#define B_DOMAIN 7 /* choice of domain shape, see list in global_pdes.c */
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#define B_DOMAIN 57 /* choice of domain shape, see list in global_pdes.c */
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#define CIRCLE_PATTERN 2 /* pattern of circles or polygons, see list in global_pdes.c */
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@@ -98,7 +101,7 @@
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#define NPOISSON 300 /* number of points for Poisson C_RAND_POISSON arrangement */
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#define RANDOM_POLY_ANGLE 1 /* set to 1 to randomize angle of polygons */
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#define LAMBDA 0.7 /* parameter controlling the dimensions of domain */
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#define LAMBDA 0.25 /* parameter controlling the dimensions of domain */
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#define MU 0.0 /* parameter controlling the dimensions of domain */
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#define NPOLY 3 /* number of sides of polygon */
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#define APOLY 2.0 /* angle by which to turn polygon, in units of Pi/2 */
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@@ -137,10 +140,10 @@
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#define AMPLITUDE 0.8 /* amplitude of periodic excitation */
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#define ACHIRP 0.2 /* acceleration coefficient in chirp */
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#define DAMPING 0.0 /* damping of periodic excitation */
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#define COURANT 0.06 /* Courant number */
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#define COURANTB 0.15 /* Courant number in medium B */
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#define COURANT 0.05 /* Courant number */
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#define COURANTB 0.1 /* Courant number in medium B */
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#define GAMMA 0.0 /* damping factor in wave equation */
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#define GAMMAB 0.015 /* damping factor in wave equation */
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#define GAMMAB 0.0 /* damping factor in wave equation */
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#define GAMMA_SIDES 1.0e-4 /* damping factor on boundary */
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#define GAMMA_TOPBOT 1.0e-7 /* damping factor on boundary */
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#define KAPPA 0.0 /* "elasticity" term enforcing oscillations */
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@@ -151,8 +154,9 @@
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/* Increasing COURANT speeds up the simulation, but decreases accuracy */
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/* For similar wave forms, COURANT^2*GAMMA should be kept constant */
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#define ADD_OSCILLATING_SOURCE 0 /* set to 1 to add an oscillating wave source */
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#define OSCILLATING_SOURCE_PERIOD 30 /* period of oscillating source */
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#define ADD_OSCILLATING_SOURCE 1 /* set to 1 to add an oscillating wave source */
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#define OSCILLATING_SOURCE_PERIOD 100 /* period of oscillating source */
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#define ALTERNATE_OSCILLATING_SOURCE 1 /* set to 1 to alternate sign of oscillating source */
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/* Boundary conditions, see list in global_pdes.c */
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@@ -163,9 +167,9 @@
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/* Parameters for length and speed of simulation */
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// #define NSTEPS 200 /* number of frames of movie */
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#define NSTEPS 1500 /* number of frames of movie */
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#define NVID 10 /* number of iterations between images displayed on screen */
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#define NSTEPS 1400 /* number of frames of movie */
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// #define NSTEPS 250 /* number of frames of movie */
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#define NVID 5 /* number of iterations between images displayed on screen */
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#define NSEG 1000 /* number of segments of boundary */
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#define INITIAL_TIME 0 /* time after which to start saving frames */
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#define BOUNDARY_WIDTH 2 /* width of billiard boundary */
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@@ -182,12 +186,9 @@
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/* Parameters of initial condition */
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// #define INITIAL_AMP 0.75 /* amplitude of initial condition */
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// #define INITIAL_VARIANCE 0.001 /* variance of initial condition */
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// #define INITIAL_WAVELENGTH 0.05 /* wavelength of initial condition */
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#define INITIAL_AMP 0.75 /* amplitude of initial condition */
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#define INITIAL_VARIANCE 0.0002 /* variance of initial condition */
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#define INITIAL_WAVELENGTH 0.01 /* wavelength of initial condition */
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#define INITIAL_AMP 0.25 /* amplitude of initial condition */
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#define INITIAL_VARIANCE 0.0005 /* variance of initial condition */
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#define INITIAL_WAVELENGTH 0.02 /* wavelength of initial condition */
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/* Plot type, see list in global_pdes.c */
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@@ -195,8 +196,8 @@
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#define ZPLOT 103 /* wave height */
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#define CPLOT 103 /* color scheme */
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#define ZPLOT_B 105
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#define CPLOT_B 105 /* plot type for second movie */
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#define ZPLOT_B 107
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#define CPLOT_B 107 /* plot type for second movie */
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#define AMPLITUDE_HIGH_RES 1 /* set to 1 to increase resolution of plot */
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#define SHADE_3D 1 /* set to 1 to change luminosity according to normal vector */
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@@ -218,13 +219,13 @@
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#define REP_AXO_3D 0 /* linear projection (axonometry) */
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#define REP_PROJ_3D 1 /* projection on plane orthogonal to observer line of sight */
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#define ROTATE_VIEW 0 /* set to 1 to rotate position of observer */
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#define ROTATE_VIEW 1 /* set to 1 to rotate position of observer */
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#define ROTATE_ANGLE 360.0 /* total angle of rotation during simulation */
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/* Color schemes */
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#define COLOR_PALETTE 10 /* Color palette, see list in global_pdes.c */
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#define COLOR_PALETTE_B 16 /* Color palette, see list in global_pdes.c */
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#define COLOR_PALETTE_B 14 /* Color palette, see list in global_pdes.c */
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#define BLACK 1 /* background */
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@@ -237,11 +238,12 @@
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#define PHASE_FACTOR 20.0 /* factor in computation of phase in color scheme P_3D_PHASE */
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#define PHASE_SHIFT 0.0 /* shift of phase in color scheme P_3D_PHASE */
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#define ATTENUATION 0.0 /* exponential attenuation coefficient of contrast with time */
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#define E_SCALE 100.0 /* scaling factor for energy representation */
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#define LOG_SCALE 0.5 /* scaling factor for energy log representation */
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#define E_SCALE 100.0 /* scaling factor for energy representation */
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#define LOG_SCALE 0.75 /* scaling factor for energy log representation */
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#define LOG_SHIFT 0.5 /* shift of colors on log scale */
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#define LOG_ENERGY_FLOOR -10.0 /* floor value for log of (total) energy */
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#define LOG_MEAN_ENERGY_SHIFT 1.0 /* additional shift for log of mean energy */
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#define FLUX_SCALE 1.0e4 /* scaling factor for enegy flux represtnation */
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#define RESCALE_COLOR_IN_CENTER 0 /* set to 1 to decrease color intentiy in the center (for wave escaping ring) */
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#define COLORHUE 260 /* initial hue of water color for scheme C_LUM */
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@@ -255,13 +257,11 @@
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#define NYMAZE 7 /* height of maze */
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#define MAZE_MAX_NGBH 4 /* max number of neighbours of maze cell */
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#define RAND_SHIFT 24 /* seed of random number generator */
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// 0, 9, 18, 20, 22
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// #define RAND_SHIFT 58 /* seed of random number generator */
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#define MAZE_XSHIFT 0.0 /* horizontal shift of maze */
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#define DRAW_COLOR_SCHEME 1 /* set to 1 to plot the color scheme */
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#define COLORBAR_RANGE 2.0 /* scale of color scheme bar */
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#define COLORBAR_RANGE_B 5.0 /* scale of color scheme bar for 2nd part */
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#define COLORBAR_RANGE 3.5 /* scale of color scheme bar */
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#define COLORBAR_RANGE_B 3.0 /* scale of color scheme bar for 2nd part */
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#define ROTATE_COLOR_SCHEME 0 /* set to 1 to draw color scheme horizontally */
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#define SAVE_TIME_SERIES 0 /* set to 1 to save wave time series at a point */
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@@ -286,7 +286,7 @@ double light[3] = {0.816496581, -0.40824829, 0.40824829}; /* vector of "lig
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double observer[3] = {8.0, 8.0, 8.0}; /* location of observer for REP_PROJ_3D representation */
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int reset_view = 0; /* switch to reset 3D view parameters (for option ROTATE_VIEW) */
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#define Z_SCALING_FACTOR 0.35 /* overall scaling factor of z axis for REP_PROJ_3D representation */
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#define Z_SCALING_FACTOR 0.3 /* overall scaling factor of z axis for REP_PROJ_3D representation */
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#define XY_SCALING_FACTOR 2.4 /* overall scaling factor for on-screen (x,y) coordinates after projection */
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#define ZMAX_FACTOR 1.0 /* max value of z coordinate for REP_PROJ_3D representation */
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#define XSHIFT_3D -0.1 /* overall x shift for REP_PROJ_3D representation */
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@@ -1028,7 +1028,7 @@ void animation()
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// init_circular_wave_mod(polyline[85].x, polyline[85].y, phi, psi, xy_in);
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init_circular_wave_mod(-0.85, 0.0, phi, psi, xy_in);
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init_circular_wave_mod(0.0, 0.0, phi, psi, xy_in);
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// init_wave_flat_mod(phi, psi, xy_in);
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// add_circular_wave_mod(1.0, 1.0, 0.0, phi, psi, xy_in);
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@@ -1108,15 +1108,16 @@ void animation()
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// add_circular_wave_mod(1.0, -1.0, 0.0, phi, psi, xy_in);
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// add_circular_wave(1.0, -1.5*LAMBDA, 0.0, phi, psi, xy_in);
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// add_circular_wave(-1.0, 0.6*cos((double)(period)*DPI/3.0), 0.6*sin((double)(period)*DPI/3.0), phi, psi, xy_in);
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yshift = (double)period*a + (double)(period*period)*b;
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add_circular_wave_mod(sign, -1.5 + yshift, 0.0, phi, psi, xy_in);
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// yshift = (double)period*a + (double)(period*period)*b;
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if (ALTERNATE_OSCILLATING_SOURCE) sign = -sign;
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add_circular_wave_mod(sign, 0.0, 0.0, phi, psi, xy_in);
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// speed = (a + 2.0*(double)(period)*b)/((double)(NVID));
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// speed = 0.55*(a + 2.0*(double)(period)*b)/((double)(NVID*OSCILLATING_SOURCE_PERIOD));
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speed = (a + 2.0*(double)(period)*b)/((double)(3*NVID*OSCILLATING_SOURCE_PERIOD));
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printf("v = %.3lg, c = %.3lg\n", speed, c);
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speed = speed/c;
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sign = -sign;
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period++;
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// speed = (a + 2.0*(double)(period)*b)/((double)(3*NVID*OSCILLATING_SOURCE_PERIOD));
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// printf("v = %.3lg, c = %.3lg\n", speed, c);
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// speed = speed/c;
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// sign = -sign;
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// period++;
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}
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if (PRINT_SPEED) print_speed_3d(speed, 0, 1.0);
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