回答編集履歴
1
それとも「点の代わりにランダムな長さ・向きの線を描きたい」ってことかな？？
test
CHANGED
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@@ -37,3 +37,40 @@
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}
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}
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```
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---
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それとも「点の代わりにランダムな長さ・向きの線を描きたい」ってことかな？？
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```Processing
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int a = 4;
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float[] x = new float[a];
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float[] y = new float[a];
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void setup() {
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size(500, 500);
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frameRate(10);
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background(0);
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stroke(255);
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noFill();
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for (int i = 0; i < a; i++) {
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x[i] = width/2;
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y[i] = height/2;
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}
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}
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void draw() {
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for (int i = 0; i < a; i++) {
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//point(x[i], y[i]);
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PVector v = PVector.random2D().mult(random(5, 10));
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line(x[i], y[i], x[i] + v.x, y[i] + v.y);
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line(x[i], y[i], x[i] - v.x, y[i] - v.y);
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x[i] += random(-5, 5);
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y[i] += random(-5, 5);
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}
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}
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```
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[random2D() / Reference / Processing.org](https://processing.org/reference/PVector_random2D_.html)
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[mult() / Reference / Processing.org](https://processing.org/reference/PVector_mult_.html)
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