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);
}

首先，使用 Processing 4 运行 issue 中完整的 Java sketch，并将其每个顶点的颜色行为与 Processing 3.x 进行比较。跟踪 PShape.setFill() 调用经过 createShape(BOX, ...).getTessellation() 和 shape(shape) 的过程。完成的标准是：在受影响的 Processing 4 版本中，sketch 再次使用随机顶点颜色更新 box。