d3.js interpolateRgbBasis()用法及代碼示例

d3.InterpolateRgbBasis()函數用於返回給定的顏色數組的統一非有理B-spline插值器函數，該數組將轉換為RGB顏色。

用法:

d3.interpolateRgbBasis(colors);

參數：它需要多種顏色。

返回：它返回插值器函數。

下麵給出了一些Interpolate.RgbBasis()函數的示例。

範例1：在控製台中打印輸出。

<!DOCTYPE html> 
<html lang="en"> 
<head> 
  <meta charset="UTF-8"> 
  <meta name="viewport" 
        content="width=device-width,  
                 initial-scale=1.0"> 
  <title>Document</title> 
</head> 
<style> 
  .b1, .b2{ 
    width:100px; 
    height:100px; 
  } 
</style> 
<body> 
  <div class="b1"> 
  
  </div> 
  <div class="b2"> 
  
  </div> 
  <!--Fetching from CDN of D3.js -->
  <script type = "text/javascript" 
          src =  
"https://d3js.org/d3.v4.min.js"> 
   </script> 
  <script> 
    console.log("Type of the function is:", 
 typeof(d3.interpolateRgbBasis(["red", "white", "blue"]))) 
  
    console.log( 
d3.interpolateRgbBasis(["red", "white", "blue"])(0.5)) 
  
    console.log( 
d3.interpolateRgbBasis(["red", "white", "blue"])(0.2)) 
  </script> 
</body> 
</html>

輸出：

範例2：在HTML中使用d3.interpolateRgbBasis。

<!DOCTYPE html> 
<html lang="en"> 
<head> 
  <meta charset="UTF-8"> 
  <meta name="viewport" 
        content="width=device-width,  
                 initial-scale=1.0"> 
  <title>Document</title> 
</head> 
<style> 
  div{ 
    width:100px; 
    height:100px; 
  } 
</style> 
<body> 
  D3.interpolateRgbBasis() 
  <div class="b1"> 
  </div> 
  <div class="b2"> 
  </div> 
  <!--Fetching from CDN of D3.js -->
  <script type = "text/javascript"
          src =  
"https://d3js.org/d3.v4.min.js"> 
   </script> 
  <script> 
    // Array of colors is given 
    let color= 
d3.interpolateRgbBasis([ "white", "red", "green"])(0.9); 
  
    let color2= 
d3.interpolateRgbBasis(["red", "white", "green"])(0.8); 
  
    let b1=document.querySelector(".b1"); 
    let b2=document.querySelector(".b2"); 
    b1.style.backgroundColor=color; 
    b2.style.backgroundColor=color2; 
  </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 interpolateRgbBasis() 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。