p5.js mouseClicked()用法及代码示例

按下并释放鼠标按钮时，p5.js中的mouseClicked()函数起作用。浏览器可能包含附加到各种鼠标事件的不同默认行为。为防止此事件的默认行为，请将“return false”添加到方法的末尾。

用法:

mouseReleased(Event)

以下程序说明了p5.js中的mouseClicked()函数：

范例1：本示例说明了mouseClicked()函数。

let valueX; 
let valueY; 
  
function setup() { 
      
    // Create Canvas 
    createCanvas(500, 500); 
} 
   
function draw() { 
      
    // Set the background color 
    background(200);  
      
    // SEt the filled color 
    fill('green'); 
      
    // Set the font size 
    textSize(25); 
      
    text('Click mouse to change color', 30, 30); 
      
    // Fill color according to mouseClicked()  
    fill(valueX, 255-valueY, 255-valueX); 
      
    // Draw ellipse   
    ellipse(mouseX, mouseY, 115, 115); 
} 
  
function mouseClicked() { 
    valueX = mouseX%255; 
    valueY = mouseY%255; 
}

输出：

范例2：

let valueX; 
let valueY; 
  
function setup() { 
      
    // Create Canvas 
    createCanvas(500, 500); 
} 
   
function draw() { 
      
    // Set background color 
    background(200);  
      
    fill('green'); 
      
    // Set font size 
    textSize(25); 
      
    text('Click mouse to change color', 30, 30); 
      
    // Fill color according to mouseMoved()  
    fill(valueX, 255-valueY, 255-valueX); 
      
    // Draw rectangle  
    rect(mouseX, mouseY, 115, 115); 
      
    fill(valueY, 255-valueX, 255-valueX); 
   
    rect(mouseX, mouseY+115, 115, 115); 
    fill(255-valueY, 255-valueX, 255-valueY); 
   
    rect(mouseX-115, mouseY, 115, 115); 
    fill(255-valueY, 255-valueY, 255-valueY); 
   
    rect(mouseX-115, mouseY+115, 115, 115); 
} 
  
function mouseReleased() { 
    valueX = mouseX%255; 
    valueY = mouseY%255; 
}

输出：

参考： https://p5js.org/reference/#/p5/mouseReleased

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注：本文由纯净天空筛选整理自sarthak_ishu11大神的英文原创作品 p5.js | Mouse | mouseClicked() Function。非经特殊声明，原始代码版权归原作者所有，本译文未经允许或授权，请勿转载或复制。