d3.js arc.startAngle()用法及代碼示例

d3.js庫中的arc.endAngle()函數用於設置弧的起始角度。該函數將起始角度設置為函數或整數。

用法:

arc.startAngle([angle]);

參數：該函數接受如上所述和以下描述的單個參數。

angle:這需要一個與弧的起始角度相對應的數字。

返回值：此函數不返回任何內容。

下麵給出的是上麵給出的函數的一些例子。

範例1：

HTML

<!DOCTYPE html> 
<html lang="en"> 
  
<head> 
    <meta charset="UTF-8" /> 
    <meta name="viewport" content= 
        "width=device-width, initial-scale=1.0" /> 
  
    <!--Fetching from CDN of D3.js -->
    <script src= 
        "https://d3js.org/d3.v6.min.js"> 
    </script> 
</head> 
  
<body> 
    <div style="width:300px; height:300px;"> 
        <center> 
            <h1 style="color:green"> 
                GeeksforGeeks 
            </h1> 
            <h2> 
                arc.startAngle() 
            </h2> 
        </center> 
        <svg width="300" height="300"> 
        </svg> 
    </div> 
      
    <script> 
        var svg = d3.select("svg") 
            .append("g") 
            .attr("transform", "translate(150, 100)"); 
  
        // An arc will be produced 
        var arc = d3.arc() 
            .outerRadius(20) 
            .innerRadius(90) 
            // Use of arc.startAngle() Function  
            .startAngle(3) 
            .endAngle(2 * 2.5); 
  
        svg.append("path") 
            .attr("class", "arc") 
            .attr("d", arc); 
  
        let p = document.querySelector(".arc"); 
        p.style.fill = "green"; 
    </script> 
</body> 
  
</html>

輸出：

範例2：

HTML

<!DOCTYPE html> 
<html lang="en"> 
  
<head> 
    <meta charset="UTF-8" /> 
    <meta name="viewport" content= 
        "width=device-width, initial-scale=1.0" /> 
  
    <!--Fetching from CDN of D3.js -->
    <script src= 
        "https://d3js.org/d3.v6.min.js"> 
    </script> 
</head> 
  
<body> 
    <div style="width:300px; height:300px;"> 
        <center> 
            <h1 style="color:green"> 
                GeeksforGeeks 
            </h1> 
            <h2> 
                arc.startAngle() 
            </h2> 
        </center> 
        <svg width="300" height="300"> 
        </svg> 
    </div> 
      
    <script> 
        var svg = d3.select("svg") 
            .append("g") 
            .attr("transform", "translate(150, 100)"); 
  
        // An arc will be produced 
        var arc = d3.arc() 
            .outerRadius(20) 
            .innerRadius(90) 
            // Use of arc.startAngle() Function  
            .startAngle(5) 
            .endAngle(0.5); 
  
        svg.append("path") 
            .attr("class", "arc") 
            .attr("d", arc); 
  
        let p = document.querySelector(".arc"); 
        p.style.fill = "green"; 
    </script> 
</body> 
  
</html>

輸出：

相關用法

注：本文由純淨天空篩選整理自tarun007大神的英文原創作品 D3.js arc.startAngle() Function。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。