c81378624f
Change-Id: Ic53dc7ecab1b44761fe06e6b528864d24cc5fa58 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/363940 Reviewed-by: Brian Osman <brianosman@google.com> Commit-Queue: Brian Osman <brianosman@google.com>
38 lines
1.2 KiB
JSON
38 lines
1.2 KiB
JSON
{
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"MaxCount": 200,
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"Drawable": {
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"Type": "SkCircleDrawable",
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"Radius": 8
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},
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"Code": [
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"void effectSpawn(inout Effect effect) {",
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" effect.lifetime = 2;",
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"}",
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"",
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"void effectUpdate(inout Effect effect) {",
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" if (effect.age < 0.25 || effect.age > 0.75) { effect.rate = 0; }",
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" else { effect.rate = 200; }",
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"}",
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"",
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"void spawn(inout Particle p) {",
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" int idx = int(rand(p.seed) * 4);",
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" p.color.rgb = (idx == 0) ? float3(0.87, 0.24, 0.11)",
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" : (idx == 1) ? float3(1.00, 0.90, 0.20)",
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" : (idx == 2) ? float3(0.44, 0.73, 0.24)",
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" : float3(0.38, 0.54, 0.95);",
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"",
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" p.lifetime = (1 - effect.age) * effect.lifetime;",
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" p.scale = mix(0.6, 1, rand(p.seed));",
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"}",
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"",
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"void update(inout Particle p) {",
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" p.color.a = 1 - p.age;",
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"",
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" float a = radians(rand(p.seed) * 360);",
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" float invAge = 1 - p.age;",
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" p.vel = float2(cos(a), sin(a)) * mix(250, 550, rand(p.seed)) * invAge * invAge;",
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"}",
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""
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],
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"Bindings": []
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} |