PShape.setFill() no longer works

Created by: cacheflowe

This used to work in Processing 3.x, but no longer works in recent Processing 4 versions.

Here's a complete sketch. In Processing 3.x and up to 4.0.b2, we see the box updates to random vertex colors. Since Processing 4.0.b4 (or maybe beta 3), it doesn't have an effect.

PShape shape;
  
public void setup() {
  size(640, 360, P3D);
  shape = createShape(BOX, 100, 100, 100).getTessellation();
  updateFill();
}

public void updateFill() {
  int numVerts = shape.getVertexCount();
  for (int i = 0; i < numVerts; i++) {
    shape.setFill(i, color(random(255), random(255), random(255)));
  }
}

public void draw() {
  background(0);
  translate(width/2, height/2, 0);
  rotateY(frameCount * 0.01);
  shape(shape);
}

まず、issue にある完全な Java スケッチを Processing 4 で実行し、頂点ごとの色の挙動を Processing 3.x と比較します。PShape.setFill() の呼び出しを createShape(BOX, ...).getTessellation() と shape(shape) まで追跡します。完了の条件は、影響を受ける Processing 4 のバージョンで、スケッチが再びボックスをランダムな頂点カラーで更新することです。