Graphics.DrawPath

Graphics.DrawPath method

绘制一个 GraphicsPath。

public void DrawPath(Pen pen, GraphicsPath path)

参数	类型	描述
pen	Pen	`Pen` 用于确定路径的颜色、宽度和样式。
path	GraphicsPath	要绘制的 `GraphicsPath`。

异常

异常	条件
ArgumentNullException	pen 为 null。-or- path 为 null。

示例

此示例使用 GraphicsPath 和 Graphics 类在图像表面上创建和操作图形。示例创建一个新的 Image（Tiff 类型），清除表面并借助 GraphicsPath 类绘制路径。最后调用 Graphics 类公开的 DrawPath 方法在表面上渲染这些路径。

[C#]

//创建 FileStream 的实例
using (System.IO.FileStream stream = new System.IO.FileStream(@"C:\temp\output.tiff", System.IO.FileMode.Create))
{
    //创建 TiffOptions 的实例并设置其各种属性
    Aspose.Imaging.ImageOptions.TiffOptions tiffOptions = new Aspose.Imaging.ImageOptions.TiffOptions(Imaging.FileFormats.Tiff.Enums.TiffExpectedFormat.Default);

    //为 ImageOptions 实例设置源
    tiffOptions.Source = new Aspose.Imaging.Sources.StreamSource(stream);

    //创建 Image 的实例
    using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Create(tiffOptions, 500, 500))
    {
        //创建并初始化 Graphics 类的实例
        Aspose.Imaging.Graphics graphics = new Aspose.Imaging.Graphics(image);

        //清除 Graphics 表面
        graphics.Clear(Color.Wheat);

        //创建 GraphicsPath 类的实例
        Aspose.Imaging.GraphicsPath graphicspath = new Aspose.Imaging.GraphicsPath();

        //创建 Figure 类的实例
        Aspose.Imaging.Figure figure = new Aspose.Imaging.Figure();

        //向 Figure 对象添加形状
        figure.AddShape(new Aspose.Imaging.Shapes.RectangleShape(new Aspose.Imaging.RectangleF(10f, 10f, 300f, 300f)));
        figure.AddShape(new Aspose.Imaging.Shapes.EllipseShape(new Aspose.Imaging.RectangleF(50f, 50f, 300f, 300f)));
        figure.AddShape(new Aspose.Imaging.Shapes.PieShape(new Aspose.Imaging.RectangleF(new Aspose.Imaging.PointF(250f, 250f), new Aspose.Imaging.SizeF(200f, 200f)), 0f, 45f));

        //将 Figure 对象添加到 GraphicsPath
        graphicspath.AddFigure(figure);

        //使用颜色为 Black 的 Pen 对象绘制路径
        graphics.DrawPath(new Aspose.Imaging.Pen(Aspose.Imaging.Color.Black, 2), graphicspath);

        // 保存所有更改。
        image.Save();
    }
}

另请参见

class Pen
class GraphicsPath
class Graphics
namespace Aspose.Imaging
assembly Aspose.Imaging

Graphics.DrawLines Graphics.DrawPie