舞台

4. 画布

4.7. 创建图形缓冲区


createGraphics()

示例：

▶️运行示例代码



var pg;
function setup(){
  createCanvas(100,100);
  pg = (createGraphics(100,100));
};

function draw(){
  background('#c8c8c8');
  pg.background('#666666');
  pg.noStroke();
  pg.ellipse((pg.width / 2), (pg.height / 2), 50, 50);
  image(pg, 50, 50);
  image(pg, 0, 0, 50, 50);
};

舞台区显示的画布内容如下：


Description

Creates and returns a new p5.Renderer object. Use this class if you need to draw into an off-screen graphics buffer. The two parameters define the width and height in pixels.

Syntax

createGraphics(w, h, [renderer])

Parameters

  • w
     
    Number: 

    width of the offscreen graphics buffer

  • h
     
    Number: 

    height of the offscreen graphics buffer

  • renderer
     
    Constant: 

    either P2D or WEBGL undefined defaults to p2d

     (Optional)

Returns

p5.Graphics: offscreen graphics buffer




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