The avatar for @essingen123
K Lindberg
I like AR & Audio :) If Tesla was right about energy and vibration; a Fourier Series makes sine waves and Pi Fractals extra interesting
Published
Edited
May 20, 2018
5 stars
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function generateDistribution(triangles) {
const totalArea = triangles.reduce((sum, triangle) => sum + getTriangleArea(triangle), 0);
const cumulativeDistribution = [];
for (let i = 0; i < triangles.length; i++) {
const lastValue = cumulativeDistribution[i - 1] || 0;
const nextValue = lastValue + getTriangleArea(triangles[i]) / totalArea;
cumulativeDistribution.push(nextValue);
}
// [area1, area1 + aera2, area1 + area2 + area3, ...]
return cumulativeDistribution;
}
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function selectRandomTriangle(triangles) {
const cumulativeDistribution = generateDistribution(triangles);
const rnd = Math.random();
const index = cumulativeDistribution.findIndex(v => v > rnd);
return triangles[index];
}
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