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This commit is contained in:
tamat
2020-05-15 12:15:33 +02:00
parent a1c312fab9
commit 4cb1d9c0e5
7 changed files with 85 additions and 24 deletions
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21
src/nodes/math.js
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@@ -236,6 +236,10 @@
this.addProperty("min", 0);
this.addProperty("max", 1);
this.addProperty("smooth", true);
this.addProperty("seed", 0);
this.addProperty("octaves", 1);
this.addProperty("persistence", 0.8);
this.addProperty("speed", 1);
this.size = [90, 30];
}
@@ -266,7 +270,22 @@
MathNoise.prototype.onExecute = function() {
var f = this.getInputData(0) || 0;
var r = MathNoise.getValue(f, this.properties.smooth);
var iterations = this.properties.octaves || 1;
var r = 0;
var amp = 1;
var seed = this.properties.seed || 0;
f += seed;
var speed = this.properties.speed || 1;
var total_amp = 0;
for(var i = 0; i < iterations; ++i)
{
r += MathNoise.getValue(f * (1+i) * speed, this.properties.smooth) * amp;
total_amp += amp;
amp *= this.properties.persistence;
if(amp < 0.001)
break;
}
r /= total_amp;
var min = this.properties.min;
var max = this.properties.max;
this._last_v = r * (max - min) + min;