半透明なブロック

/**
* translucent blocks
*
* @author aa_debdeb
* @date 2017/01/06
*/

float W = 800;
float H = 800;
float BOX_WIDTH = 20;

void setup(){
  size(500, 500, P3D);
  fill(255, 50);
  stroke(255, 150);
  strokeWeight(2);
}

void draw(){
  background(0);
  translate(width / 2, height / 3, -200);
  rotateX(PI / 5);
  rotateZ(PI / 4);
  lights();
  for(float w = -W; w <= W; w += BOX_WIDTH){
    for(float h = -H; h <= H; h += BOX_WIDTH){
      pushMatrix();
      float boxHeight = map(calcCubic(noise(w * 0.01, h * 0.01 - frameCount * 0.04, frameCount * 0.01)), 0, 1, 0, 150);
      translate(w, h, boxHeight / 2);
      box(BOX_WIDTH, BOX_WIDTH, boxHeight);
      popMatrix();
    }
  }
}

float calcCubic(float v){
  if(v < 0.5){
    return 4.0 * v * v * v;
  } else {
    return 4.0 * (v - 1.0) * (v - 1.0) * (v - 1.0) + 1.0;
  }
}