将弧形对象添加到PDF文件

以下代码片段也适用于Aspose.PDF.Drawing库。

添加弧形对象

Aspose.PDF for .NET支持将图形对象（例如图形、线条、矩形等）添加到PDF文档中的功能。它还提供了用特定颜色填充弧形对象的功能。

请按照以下步骤操作：

1. 创建Document实例。
2. 创建具有特定尺寸的Drawing object。
3. 为Drawing object设置Border。
4. 将Graph对象添加到页面的段落集合中。
5. 保存我们的PDF文件。

以下代码片段演示了如何添加Arc对象。

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void Arc()
{
    // The path to the document directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Images();

    // Create PDF document
    using (var document = new Aspose.Pdf.Document())
    {
        // Add page
        var page = document.Pages.Add();

        // Create Drawing object with certain dimensions
        var graph = new Aspose.Pdf.Drawing.Graph(400, 400);

        // Set border for Drawing object
        var borderInfo = new Aspose.Pdf.BorderInfo(Aspose.Pdf.BorderSide.All, Aspose.Pdf.Color.Green);
        graph.Border = borderInfo;

        // Create arcs and set their properties
        var arc1 = new Aspose.Pdf.Drawing.Arc(100, 100, 95, 0, 90)
        {
            GraphInfo = 
            { 
                Color = Aspose.Pdf.Color.GreenYellow 
            }
        };
        graph.Shapes.Add(arc1);

        var arc2 = new Aspose.Pdf.Drawing.Arc(100, 100, 90, 70, 180)
        {
            GraphInfo = 
            { 
                Color = Aspose.Pdf.Color.DarkBlue 
            }
        };
        graph.Shapes.Add(arc2);

        var arc3 = new Aspose.Pdf.Drawing.Arc(100, 100, 85, 120, 210)
        {
            GraphInfo = 
            { 
                Color = Aspose.Pdf.Color.Red 
            }
        };
        graph.Shapes.Add(arc3);

        // Add Graph object to paragraphs collection of page
        page.Paragraphs.Add(graph);

        // Save PDF document
        document.Save(dataDir + "DrawingArc_out.pdf");
    }
}

创建填充弧形对象

下一个示例演示了如何添加一个填充颜色和特定尺寸的弧形对象。

// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ArcFilled()
{
    // The path to the document directory
    var dataDir = RunExamples.GetDataDir_AsposePdf_Images();

    // Create PDF document
    using (var document = new Aspose.Pdf.Document())
    {
        // Add page
        var page = document.Pages.Add();

        // Create Drawing object with certain dimensions
        var graph = new Aspose.Pdf.Drawing.Graph(400, 400);

        // Set border for Drawing object
        var borderInfo = new Aspose.Pdf.BorderInfo(Aspose.Pdf.BorderSide.All, Aspose.Pdf.Color.Green);
        graph.Border = borderInfo;

        // Create an arc and set fill color
        var arc = new Aspose.Pdf.Drawing.Arc(100, 100, 95, 0, 90)
        {
            GraphInfo = 
            { 
                FillColor = Aspose.Pdf.Color.GreenYellow 
            }
        };
        graph.Shapes.Add(arc);

        // Create a line and set fill color
        var line = new Aspose.Pdf.Drawing.Line(new float[] { 195, 100, 100, 100, 100, 195 })
        {
            GraphInfo = 
            { 
                FillColor = Aspose.Pdf.Color.GreenYellow 
            }
        };
        graph.Shapes.Add(line);

        // Add Graph object to the paragraphs collection of page
        page.Paragraphs.Add(graph);

        // Save PDF document
        document.Save(dataDir + "ExampleFilledArc_out.pdf");
    }
}

让我们看看添加填充弧形的结果：