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以下代码片段也适用于Aspose.PDF.Drawing库。
图形曲线是投影线的连接联合,每条线在普通双点上与三条其他线相交。
Aspose.PDF for .NET展示了如何在您的图形中使用贝塞尔曲线。 贝塞尔曲线广泛用于计算机图形学中建模平滑曲线。曲线完全包含在其控制点的凸包中,这些点可以图形化显示并用于直观地操作曲线。 整个曲线包含在四个给定点(它们的凸包)所形成的四边形中。
在本文中,我们将研究您可以在PDF文档中创建的简单图形曲线和填充曲线。
请按照以下步骤操作:
// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void ExampleCurve()
{
// 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, 200);
// Set border for Drawing object
var borderInfo = new Aspose.Pdf.BorderInfo(Aspose.Pdf.BorderSide.All, Aspose.Pdf.Color.Green);
graph.Border = borderInfo;
// Create a curve and set its properties
var curve1 = new Aspose.Pdf.Drawing.Curve(new float[] { 10, 10, 50, 60, 70, 10, 100, 120 })
{
GraphInfo =
{
Color = Aspose.Pdf.Color.GreenYellow
}
};
// Add the curve to the graph shapes
graph.Shapes.Add(curve1);
// Add Graph object to paragraphs collection of page
page.Paragraphs.Add(graph);
// Save PDF document
document.Save(dataDir + "DrawingCurve1_out.pdf");
}
}
以下图片显示了使用我们的代码片段执行的结果:
此示例展示了如何添加一个填充颜色的曲线对象。
// For complete examples and data files, visit https://github.com/aspose-pdf/Aspose.PDF-for-.NET
private static void CurveFilled()
{
// 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, 200);
// Set border for Drawing object
var borderInfo = new Aspose.Pdf.BorderInfo(Aspose.Pdf.BorderSide.All, Aspose.Pdf.Color.Green);
graph.Border = borderInfo;
// Create a curve and set fill color
var curve1 = new Aspose.Pdf.Drawing.Curve(new float[] { 10, 10, 50, 60, 70, 10, 100, 120 })
{
GraphInfo =
{
FillColor = Aspose.Pdf.Color.GreenYellow
}
};
// Add the curve to the graph shapes
graph.Shapes.Add(curve1);
// Add Graph object to paragraphs collection of page
page.Paragraphs.Add(graph);
// Save PDF document
document.Save(dataDir + "DrawingCurve2_out.pdf");
}
}
查看添加填充曲线的结果:
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