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>
94 lines
2.6 KiB
JSON
94 lines
2.6 KiB
JSON
{
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"MaxCount": 2000,
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"Drawable": {
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"Type": "SkCircleDrawable",
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"Radius": 4
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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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" 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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" p.lifetime = 10;",
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"}",
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"",
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"float4x4 rx(float rad) {",
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" float c = cos(rad);",
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" float s = sin(rad);",
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" return float4x4(1, 0, 0, 0,",
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" 0, c, -s, 0,",
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" 0, s, c, 0,",
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" 0, 0, 0, 1);",
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"}",
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"",
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"float4x4 ry(float rad) {",
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" float c = cos(rad);",
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" float s = sin(rad);",
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" return float4x4(c, 0, -s, 0,",
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" 0, 1, 0, 0,",
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" s, 0, c, 0,",
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" 0, 0, 0, 1);",
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"}",
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"",
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"float4x4 rz(float rad) {",
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" float c = cos(rad);",
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" float s = sin(rad);",
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" return float4x4( c, s, 0, 0,",
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" -s, c, 0, 0,",
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" 0, 0, 1, 0,",
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" 0, 0, 0, 1);",
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"}",
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"",
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"void update(inout Particle p) {",
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" float3 pos = float3(rand(p.seed), rand(p.seed), rand(p.seed));",
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" if (rand(p.seed) < 0.33) {",
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" if (pos.x > 0.5) {",
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" pos.x = 1;",
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" p.color.rgb = float3(1, 0.2, 0.2);",
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" } else {",
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" pos.x = 0;",
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" p.color.rgb = float3(0.2, 1, 1);",
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" }",
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" } else if (rand(p.seed) < 0.5) {",
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" if (pos.y > 0.5) {",
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" pos.y = 1;",
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" p.color.rgb = float3(0.2, 0.2, 1);",
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" } else {",
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" pos.y = 0;",
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" p.color.rgb = float3(1, 1, 0.2);",
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" }",
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" } else {",
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" if (pos.z > 0.5) {",
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" pos.z = 1;",
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" p.color.rgb = float3(0.2, 1, 0.2);",
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" } else {",
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" pos.z = 0;",
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" p.color.rgb = float3(1, 0.2, 1);",
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" }",
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" }",
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"",
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" float s = effect.age * 2 - 1;",
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" s = s < 0 ? -s : s;",
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"",
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" pos = pos * 2 - 1;",
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" pos = mix(pos, normalize(pos), s);",
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" pos = pos * 100;",
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"",
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" float age = effect.loop + effect.age;",
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" float4x4 mat = rx(age * radians(60))",
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" * ry(age * radians(70))",
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" * rz(age * radians(80));",
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" pos = (mat * float4(pos, 1)).xyz;",
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"",
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" p.pos.x = pos.x;",
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" p.pos.y = pos.y;",
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" p.scale = ((pos.z + 50) / 100 + 0.5) / 2;",
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"}",
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""
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],
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"Bindings": []
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} |