p5js冲突的2D和3D渲染

p5js conflicting 2D and 3D rendering

本文关键字：3D 渲染 2D 冲突 p5js      更新时间：2023-09-26

我是p5js和一般代码的初学者。我正在为我的一个类开发一个（希望如此）交互式网站，该网站使用由DOM控制的两个单独的草图。我认为3D渲染模式和2D渲染模式正在相互对抗。这两幅草图完全分开画。我在Chrome开发人员中收到了以下错误消息："p2d中不支持p5.js:16124 Uncaught。请使用webgl模式"。这是我的代码：

HTML

<html>
<head>
  <meta charset="UTF-8">
  <script language="javascript" type="text/javascript" src="libraries/p5.js"></script>
<script language="javascript" src="libraries/p5.dom.js"></script>
  <script language="javascript" type="text/javascript" src="sketch.js"></script>
  <script language="javascript" type="text/javascript" src="sketch2.js"></script>
  <style> body {padding: 0; margin: 0;} </style>
</head>
<body>
<div id="text" style="background: none; position: absolute; color: white; font-family: avenir,sans-serif; width: 250px; margin-left: 140px; margin-top: 50px; line-height: 15pt; font-size: 9pt; z-index:1;">
<p>
text
</p>
</div>
<div id="myContainer" style="background:none; position:absolute; z-index:-1; width:100%;height:100%;"></div>
<div id="myContainer2" style="background:none; position:absolute; z-index:-2; width:100%;height:100%;"></div>
</body>
</html>

草图1

function setup(){
  var myCanvas = createCanvas(windowWidth, windowHeight,WEBGL);
  myCanvas.parent('myContainer2');
}
function draw(){
  background(0,0,0);
  rotateY(frameCount * 0.01);
  for(var j = 0; j < 50; j++){
    push();
    for(var i = 0; i < 80; i++){
      translate(sin(frameCount * 0.02 + j) * 150, sin(frameCount * 0.1 + j) * 110, i * 0.9);
      rotateZ(frameCount * 0.04);
      push();
      sphere(10, 15, 5); 
      pop();
    }
    pop();
  }
}

草图2

var input, button;
function setup() {
  // create canvas
  var myCanvas = createCanvas(windowWidth, windowHeight);
  myCanvas.parent('myContainer');
  background(255,255,255,0);
  input = createInput();
  input.position(140, 675);
  button = createButton('Share');
  button.position(280, 676);
  button.mousePressed(greet);
  textAlign(CENTER)
  textSize(15);
}
function greet() {
  var name = input.value();
  for (var i=0; i<1; i++) {
    push();
    fill(255,255,0);
    translate(random(width), random(height));
    text(name, 0, 0);
    pop();
  }
}

此操作不适用于2d（GitHub）。如果要反转x坐标并创建对象镜像，只需设置translate并对所有x坐标使用-x即可。

line(this.mirroring*0.5*grid_step, 0, this.mirroring*0.5*grid_step, 0.5*grid_step);
line(this.mirroring*2.5*grid_step, 0, this.mirroring*2.5*grid_step, 0.5*grid_step);
line(this.mirroring*0.5*grid_step, 0.25*grid_step, this.mirroring*2.5*grid_step, 0.25*grid_step);

其中this.mirroring可以是-1或1。当this.mirroring=-1时；反向切换

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