sandbox/Antoonvh/minbwatch.c

    All bwatch sketch functions

    A minimal example

    A minimal example

    From top left to bottom right, you see:

    1. A background with a color gradient
    2. A Stanford bunny, triangular tessellation by Johnny6 via Thingiverse
    3. A semi transparent sphere
    4. A slice of the grid
    5. A photo by Kitty Kono via Flickr.
    6. A volumetric smoke plume with contrentration color coding that is casting a shade on itself and the isosurface
    7. A round mirror
    8. A reflective sphere, color coded with scalar data
    9. A green iso surface of scalar data
    10. white fov facets that cast a shade
    11. A refractive blob definded by volume fractions
    12. A string
    13. A slice displaying scalar field data
    #include "grid/octree.h"
#include "bwatch.h"
#include "distance.h"

scalar dummy[], s[], f[], f2[], s2[];

void flipflop (coord * p) {
   while (p->x < nodata) {
     //resize
     foreach_dimension() 
       p->x /= 300;
     //rotate;
     double tmp = p->y; p->y = p->z; p->z = tmp;
     //mirror;
     p->z *= -1;
     //positioning
     p->x -= 0.55;
    p->y += 0.20;
    p++;
  }
}

int main() {
  X0 = Y0 = Z0 = -L0/2.01;
  init_grid (32);
  unrefine (y - x > 0.45);
  system ("wget -q \
https://cdn.thingiverse.com/assets/87/d8/89/b0/7c/Bunny-LowPoly.stl");
  system ("wget -q \
https://live.staticflickr.com/7894/45505956245_f24c178bed_b.jpg");
  coord * p = input_stl (fopen ("Bunny-LowPoly.stl", "r"));
  flipflop (p);
  foreach() {
    s[] = cube(x) + y + z;
    s2[] = 1.1*(exp(-(sq(x + 0.3) + sq(y) + sq(z - 0.25))*40.) - 0.05);
  }
  boundary ({s, s2});
  fraction (f , (0.2  - sqrt((sq(x/1.2 - 0.15) + sq(y + 0.15) + sq(z - 0.15)))));
  fraction (f2, (0.15 - sqrt((sq(x + 0.2) + sq((y + 0.3) /1.1) + sq(z - 0.3)))));
  restriction ({f, f2});
  watch (fov = 1.5, O = {-0.5, 0.2, 0}, poi = {0.05, 0.05, 0}, nx = 1000, ny = 900);
  image ("45505956245_f24c178bed_b.jpg",
	 alpha = -0.2, res = 650, mat = {.dull = true});
  sphere (5, mat = {.dull = true});
  equiplane (f, vof = true, mat = {.ind = 1.2});
  sketch_vof (f2, true);
  equiplane (s, -0.6);
  volume (s2, cols = true, sc = 0.04, mval = 0.01, shading = 1);
  quadriangles (s, n = {1,0,0}, alpha = 0.49, mat = {.map = cool_warm, .linear = true});
  lattice (alpha = -0.2, HQ = true);
  disk (0.4, {0.3, 0.4, 0}, {-1., -1., 1.});
  sphere (C = {-0.0, 0.25, .0}, R = 0.12, mat = {.s = s, .linear = true, .R = 0.3});
  sphere (R = 0.15, C = {-0.3, 0.5, 0.4}, mat = {.T = 0.5});
  triangles (p);
  sketch_text ("Hallo, Basilisk!  ", ops = "-font Bookman-DemiItalic", 
	       pos = "southeast", tc = {131, 23, 123}, fs = 70, alpha = 0.3);
  
  store (fopen ("min.ppm", "w"));
  plain();
  system ("convert min.ppm -resize 80% min.png"); //some MSAA
  free (p);
}