8a97782956
Change-Id: If99e1802c8187ebd98b67717d744c6695bb25900 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/238118 Reviewed-by: Brian Osman <brianosman@google.com> Commit-Queue: Brian Osman <brianosman@google.com>
35 lines
764 B
JSON
35 lines
764 B
JSON
{
|
|
"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": []
|
|
} |