e59acb79b8
Change-Id: If57fb79db8f8c5fd185fefaa202167c8082dd846 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/229921 Reviewed-by: Mike Klein <mtklein@google.com> Commit-Queue: Brian Osman <brianosman@google.com>
79 lines
1.9 KiB
JSON
79 lines
1.9 KiB
JSON
{
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"MaxCount": 4096,
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"Duration": 1,
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"Rate": 400,
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"Drawable": {
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"Type": "SkCircleDrawable",
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"Radius": 2
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},
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"Code": [
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"// float rand; Every read returns a random float [0 .. 1)",
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"layout(ctype=float) in uniform float dt;",
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"layout(ctype=float) in uniform float effectAge;",
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"",
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"struct Particle {",
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" float age;",
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" float lifetime;",
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" float2 pos;",
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" float2 dir;",
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" float scale;",
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" float2 vel;",
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" float spin;",
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" float4 color;",
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" float frame;",
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"};",
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"",
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"void spawn(inout Particle p) {",
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" p.lifetime = 1 + 2 * rand;",
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" p.pos.x = rand * 50;",
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" float a = radians(-10 + 20 * rand);",
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" float s = 50 + 10 * rand;",
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" p.vel.x = sin(a) * s;",
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" p.vel.y = -cos(a) * s;",
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"}",
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"",
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"void update(inout Particle p) {",
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" p.vel.x += wind(p.age) * dt;",
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" p.scale = 3 - (1.5 * p.age);",
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" p.color = color(p.age);",
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"}",
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""
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],
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"Bindings": [
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{
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"Type": "SkCurveBinding",
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"Name": "wind",
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"Curve": {
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"XValues": [],
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"Segments": [
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{
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"Type": "Cubic",
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"Ranged": false,
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"Bidirectional": true,
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"A0": 180,
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"B0": -90,
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"C0": -120,
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"D0": -200
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}
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]
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}
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},
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{
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"Type": "SkColorCurveBinding",
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"Name": "color",
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"Curve": {
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"XValues": [],
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"Segments": [
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{
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"Type": "Linear",
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"Ranged": true,
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"A0": [ 1, 0, 0, 1 ],
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"D0": [ 1, 0.735294, 0, 1 ],
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"A1": [ 1, 0.588235, 0, 1 ],
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"D1": [ 0.941177, 1, 0, 1 ]
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}
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]
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}
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}
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]
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} |