95c26efc90
Change-Id: I2cb6255a553852a292427d6dc9ef8c5ed7f8286d Reviewed-on: https://skia-review.googlesource.com/c/skia/+/252926 Commit-Queue: Brian Osman <brianosman@google.com> Reviewed-by: Michael Ludwig <michaelludwig@google.com> Reviewed-by: Mike Reed <reed@google.com>
42 lines
1.2 KiB
JSON
42 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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"EffectCode": [
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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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],
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"Code": [
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"void spawn(inout Particle p) {",
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" float3 colors[4];",
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" colors[0] = float3(0.87, 0.24, 0.11);",
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" colors[1] = float3(1, 0.9, 0.2);",
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" colors[2] = float3(0.44, 0.73, 0.24);",
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" colors[3] = float3(0.38, 0.54, 0.95);",
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" int idx = int(rand(p.seed) * 4);",
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" p.color.rgb = colors[idx];",
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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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} |