| { |
| "MaxCount": 4096, |
| "Duration": 1, |
| "Rate": 90, |
| "Drawable": { |
| "Type": "SkCircleDrawable", |
| "Radius": 2 |
| }, |
| "Code": [ |
| "", |
| "// float rand; Every read returns a random float [0 .. 1)", |
| "", |
| "float2 circle() {", |
| " float x;", |
| " float y;", |
| " do {", |
| " x = rand * 2 - 1;", |
| " y = rand * 2 - 1;", |
| " } while (x*x + y*y > 1);", |
| " return float2(x, y);", |
| "}", |
| "", |
| "void spawn(inout Particle p) {", |
| " p.lifetime = 30;", |
| " p.pos = circle() * 40;", |
| "}", |
| "", |
| "void update(inout Particle p) {", |
| " p.vel += normalize(p.pos) * dt * 10;", |
| " p.scale = mix(0.25, 3, p.age);", |
| "}", |
| "" |
| ], |
| "Bindings": [] |
| } |
