curveVertex() causes OutOfMemory in P2D renderer

Created by: Real-John-Cheung

Description

curveVertex() causes java.lang.OutOfMemoryError: Java heap space error when the vertex amount is big in P2D render. With the default Java2D render it works fine.

void setup(){
  size(800,800, P2D);
  beginShape();
  for(int i = 0; i < 26000;i ++){ 
    curveVertex(i * 0.1, 100);
  }
  endShape();
}

Above sketch crashes due to OutOfMemoryError, below sketches can be executed without problem:

void setup(){
  size(800,800);
  beginShape();
  for(int i = 0; i < 26000;i ++){ 
    curveVertex(i * 0.1, 100);
  }
  endShape();
}

void setup(){
  size(800,800, P2D);
  beginShape();
  for(int i = 0; i < 2000;i ++){ 
    curveVertex(i * 0.1, 100);
  }
  endShape();
}

Your Environment

• Processing version: 4.3
• Operating System and OS version: macOS 14.4.1
• Other information: on a Intel Mac

Possible Causes / Solutions

Might have something to do with how Catmull-Rom splines is calculated in P2D?

まず、提供された Processing 4.3 のスケッチを P2D レンダラーで実行し、curveVertex() の 26,000 回と 2,000 回の呼び出し、および Java2D 版を比較します。beginShape()、curveVertex()、endShape() のエントリポイントを P2D レンダラー内で追跡します。大きなスケッチが Java heap を使い果たさなくなり、期待される曲線出力が維持されれば完了です。