Java颜色未定义

Question

我正在尝试制作棕褐色效果，并且需要将某些颜色减少到一定百分比。我的编译器错误如下:

Error: The constructor java.awt.Color(double, double, double) is undefined

Error: The constructor java.awt.Color(int, int, double) is undefined

Error: The constructor java.awt.Color(int, int, double) is undefined

这是我的代码:

public void sepiaTint()
  {
    Pixel[] pixelArray = this.getPixels();
    for (int i = 0; i < pixelArray.length; i++)
    {
     Pixel pixelObj = pixelArray[i];
     int amountRed = pixelObj.getRed();
     int amountGreen = pixelObj.getGreen();
     int amountBlue = pixelObj.getBlue();

     if (amountRed < 60)
     {
       Color newColor = new Color(amountRed*0.9, amountGreen*0.9, amountBlue*0.9);
       pixelObj.setColor(newColor);
     }
     if (amountRed >= 60 && amountRed <190)
     {
       Color newColor = new Color(amountRed, amountGreen, amountBlue*0.8);
       pixelObj.setColor(newColor);
     }
     else
     {
       Color newColor = new Color(amountRed, amountGreen, amountBlue*0.9);
       pixelObj.setColor(newColor);
     }
    }
    this.repaint();
  }

Answer 1

Pixel.getRed() 返回一个整数，因此 Color(float, float, float) 对您来说毫无用处。您想要的是 Color(int, int, int) 构造函数。

0.9 被解释为 double，因此在计算值后必须再次将其转换为 int。

Color newColor = new Color((int)(amountRed*0.9), (int)(amountGreen*0.9), (int)(amountBlue*0.9));