submodule/skia/resources/particles/mouse_trail.json

   1 {
   2    "MaxCount": 2000,
   3    "Drawable": {
   4       "Type": "SkCircleDrawable",
   5       "Radius": 4
   6    },
   7    "Code": [
   8       "void effectSpawn(inout Effect effect) {",
   9       "  effect.rate = 800;",
  10       "}",
  11       "",
  12       "void spawn(inout Particle p) {",
  13       "  p.lifetime = 2 + rand(p.seed);",
  14       "  float a = radians(rand(p.seed) * 360);",
  15       "  p.vel = float2(cos(a), sin(a)) * mix(5, 15, rand(p.seed));",
  16       "  p.scale = mix(0.25, 0.75, rand(p.seed));",
  17       "}",
  18       "",
  19       "void update(inout Particle p) {",
  20       "  p.color.r = p.age;",
  21       "  p.color.g = 1 - p.age;",
  22       "}",
  23       ""
  24    ],
  25    "Bindings": []
  26 }