我有两个System.Windows.Media.Color(a和b),需要得到一个并将置于b 以模拟透明度。在我的合并方法中使用:
public static Image Merge(Image a,Image b)
{
for(int x=0;x < b.Width;x++ )
{
for (int y = 0; y < b.Height; y++)
{
a.SetPixel(x, y, b.GetPixel(x, y));
}
}
return a;
}
帮助感谢!!
解决方案:
public static Image Merge(Image a,Image b)
{
for(int x=0;x < b.Width;x++ )
{
for (int y = 0; y < b.Height; y++)
{
a.SetPixel(x, y, Mix(a.GetPixel(x, y), b.GetPixel(x, y), .5f));
//a.SetPixel(x, y,b.GetPixel(x, y));
}
}
return a;
}
public static Color Mix(Color from, Color to, float percent)
{
float amountFrom = 1.0f - percent;
return Color.FromArgb(
(byte)(from.A * amountFrom + to.A * percent),
(byte)(from.R * amountFrom + to.R * percent),
(byte)(from.G * amountFrom + to.G * percent),
(byte)(from.B * amountFrom + to.B * percent));
}
我在Mix方法中发现了一个舍入错误,在使用Math.Round()时解决:
public static Color Mix(Color from,Color to,float percent) { float amountFrom = 1.0f - percent;
return Color.FromArgb(
(byte)Math.Round(from.A * amountFrom + to.A * percent),
(byte)Math.Round(from.R * amountFrom + to.R * percent),
(byte)Math.Round(from.G * amountFrom + to.G * percent),
(byte)Math.Round(from.B * amountFrom + to.B * percent));
}
答案 0 :(得分:4)
找到this article,其中包含以下方法:
public static Color Mix(Color from, Color to, float percent)
{
float amountFrom = 1.0f - percent;
return Color.FromArgb(
(int)(from.A * amountFrom + to.A * percent),
(int)(from.R * amountFrom + to.R * percent),
(int)(from.G * amountFrom + to.G * percent),
(int)(from.B * amountFrom + to.B * percent));
}
这样称呼:
a.SetPixel(x, y, Mix(a.GetPixel(x, y), b.GetPixel(x, y), .5f));
您可能需要稍微使用该功能(甚至可能更改它),但我认为它可以让您获得您正在寻找的结果。