GDI+ 绘制路径渐变图形
通过路径渐变画刷来绘制图片
代码如下:
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
private void Form1_Paint(object sender, PaintEventArgs e)
{
Graphics g = e.Graphics;
GraphicsPath gp = new GraphicsPath();
Point[] p = new Point[]{
new Point(10,10),
new Point(100,30),
new Point(50,100)
};
gp.AddLines(p);
PathGradientBrush pgb = new PathGradientBrush(gp);
pgb.CenterColor = Color.White;
pgb.SurroundColors = new Color[]{
Color.Black,
Color.Red,
Color.Blue
};
GraphicsPath gp1 = new GraphicsPath();
gp1.AddLine(10,10,200,10);
gp1.AddLine(200, 300, 10, 300);
pgb.WrapMode = WrapMode.TileFlipY;
g.FillPath(pgb, gp1);
gp.Dispose();
pgb.Dispose();
}
{
Graphics g = e.Graphics;
GraphicsPath gp = new GraphicsPath();
Point[] p = new Point[]{
new Point(10,10),
new Point(100,30),
new Point(50,100)
};
gp.AddLines(p);
PathGradientBrush pgb = new PathGradientBrush(gp);
pgb.CenterColor = Color.White;
pgb.SurroundColors = new Color[]{
Color.Black,
Color.Red,
Color.Blue
};
GraphicsPath gp1 = new GraphicsPath();
gp1.AddLine(10,10,200,10);
gp1.AddLine(200, 300, 10, 300);
pgb.WrapMode = WrapMode.TileFlipY;
g.FillPath(pgb, gp1);
gp.Dispose();
pgb.Dispose();
}
如图:
编程总结:1:新建绘图表面
2.建立路径
3.根据路径设置画刷。
4.设置画刷的中心颜色
5,设置画刷的边框颜色
6.根据画刷去填充指定的路径。这里有两个路径, 一个是画刷本身的路径,一个是要填充的路径。