using Spire.Pdf;
using Spire.Pdf.Graphics;
using System.Drawing;namespace DrawRectangle_PDF
{class Program{static void Main(string[] args){        //新建一个PDF文档，添加页PdfDocument doc = new PdfDocument();PdfPageBase page = doc.Pages.Add();//设置画笔和画刷PdfPen pen = new PdfPen(PdfBrushes.Black, 1f);PdfBrush brush1 = PdfBrushes.RosyBrown;PdfBrush brush2 = PdfBrushes.Goldenrod;//绘入矩形（此处通过设置值来绘制成正方形）page.Canvas.DrawRectangle(pen, brush1, new Rectangle(new Point(50, 50), new Size(60, 60)));//绘入椭圆（此处通过设置值来绘制成圆形）page.Canvas.DrawEllipse(pen, brush2, 210, 50, 60, 60);//绘入线段page.Canvas.DrawLine(pen, new PointF(50, 115), new PointF(270, 115));//绘入多边形（此处绘制成三角形）PointF p1 = new PointF(130, 172);PointF p2 = new PointF(160, 120);PointF p3 = new PointF(190, 172);PointF[] points = new PointF[] { p1, p2, p3 };page.Canvas.DrawPolygon(pen, points);//保存并打开文档doc.SaveToFile("基本图形.pdf");System.Diagnostics.Process.Start("基本图形.pdf");}}
}

using Spire.Pdf;
using Spire.Pdf.Graphics;
using System;
using System.Drawing;namespace DrawCustomGraphics_PDF
{class Program{static void Main(string[] args){//新建一个PDF文档，添加页PdfDocument doc = new PdfDocument();PdfPageBase page = doc.Pages.Add();//调用DrawStar()方法绘入五角星图形
            DrawStar(page);//保存并打开文档doc.SaveToFile("自定义图形.pdf");System.Diagnostics.Process.Start("自定义图形.pdf");}//自定义DrawStar方法绘制几个不同样式的五角星private static void DrawStar(PdfPageBase page){//设置五角星的5个顶点坐标PointF[] points = new PointF[5];for (int i = 0; i < points.Length; i++){float x = (float)Math.Cos(i * 2 * Math.PI / 5);float y = (float)Math.Sin(i * 2 * Math.PI / 5);points[i] = new PointF(x, y);}//创建PdfPath类，在顶点之间添加线段组成五角星PdfPath path = new PdfPath();path.AddLine(points[2], points[0]);path.AddLine(points[0], points[3]);path.AddLine(points[3], points[1]);path.AddLine(points[1], points[4]);path.AddLine(points[4], points[2]);//保存画布状态PdfGraphicsState state = page.Canvas.Save();//实例化画笔和画刷1、画刷2PdfPen pen = new PdfPen(Color.DeepSkyBlue, 0.02f);PdfBrush brush1 = new PdfSolidBrush(Color.PaleGreen);PdfBrush brush2 = new PdfSolidBrush(Color.Bisque);//将坐标放大40倍
            page.Canvas.ScaleTransform(40f, 40f);//平移坐标page.Canvas.TranslateTransform(1f, 1.5f);//绘入第一个五角星
            page.Canvas.DrawPath(pen, path);//平移坐标并在新的位置绘入第二个五角星
            page.Canvas.TranslateTransform(2f, 0f);path.FillMode = PdfFillMode.Alternate;page.Canvas.DrawPath(pen, brush1, path);//平移坐标并在新的位置绘入第三个五角星
            page.Canvas.TranslateTransform(2f, 0f);path.FillMode = PdfFillMode.Winding;page.Canvas.DrawPath(pen, brush2, path);//实例化画刷3，平移坐标并在新的位置绘入第四个五角星
            PdfLinearGradientBrush brush3= new PdfLinearGradientBrush(new PointF(-2, 0), new PointF(2, 0), Color.OrangeRed, Color.Yellow);page.Canvas.TranslateTransform(-4f, 2f);path.FillMode = PdfFillMode.Alternate;page.Canvas.DrawPath(pen, brush3, path);//实例化画刷4，平移坐标并在新的位置绘入第五个五角星
            PdfRadialGradientBrush brush4= new PdfRadialGradientBrush(new PointF(0f, 0f), 0f, new PointF(0f, 0f), 1f, Color.Orchid, Color.LightBlue);page.Canvas.TranslateTransform(2f, 0f);path.FillMode = PdfFillMode.Winding;page.Canvas.DrawPath(pen, brush4, path);//实例化画刷5，平移坐标并在新的位置绘入第六个五角星PdfTilingBrush brush5 = new PdfTilingBrush(new RectangleF(0, 0, 4f, 4f));brush5.Graphics.DrawRectangle(brush3, 0, 0, 4f, 4f);page.Canvas.TranslateTransform(2f, 0f);path.FillMode = PdfFillMode.Winding;page.Canvas.DrawPath(pen, brush5, path);//再次保存画布状态
            page.Canvas.Restore(state);}}
}

using Spire.Pdf;
using Spire.Pdf.ColorSpace;
using Spire.Pdf.Graphics;
using System.Drawing;namespace CrearteSpotColor_PDF
{class Program{static void Main(string[] args){//新建一个PDF文档，添加页PdfDocument doc = new PdfDocument();PdfPageBase page = doc.Pages.Add();//初始化一个PdfSeparationColorSpace的对象，用于创建基本色PdfSeparationColorSpace cs1 = new PdfSeparationColorSpace("MySpotColor", Color.DarkGreen);PdfSeparationColorSpace cs2 = new PdfSeparationColorSpace("MySpotColor", Color.Yellow);PdfSeparationColorSpace cs3 = new PdfSeparationColorSpace("MySpotColor", Color.DeepPink);//将基本色透明度设置为1PdfSeparationColor color1 = new PdfSeparationColor(cs1, 1f);PdfSeparationColor color2 = new PdfSeparationColor(cs2, 1f);PdfSeparationColor color3 = new PdfSeparationColor(cs3, 1f);//根据颜色创建画刷PdfSolidBrush brush1 = new PdfSolidBrush(color1);PdfSolidBrush brush2 = new PdfSolidBrush(color2);PdfSolidBrush brush3 = new PdfSolidBrush(color3);//绘入图形及文字并着色page.Canvas.DrawPie(brush1, 10, 30, 60, 60, 360, 360);page.Canvas.DrawPie(brush2, 10, 120, 60, 60, 360, 360);page.Canvas.DrawPie(brush3, 10, 210, 60, 60, 360, 360);page.Canvas.DrawString("透明度=1.0", new PdfTrueTypeFont(new Font("Arial Unicode MS", 10f), true), brush1, new PointF(16, 100));//将基本色透明度设置为0.5,并绘入图片及文字color1 = new PdfSeparationColor(cs1, 0.5f);brush1 = new PdfSolidBrush(color1);page.Canvas.DrawPie(brush1, 80, 30, 60, 60, 360, 360);color2 = new PdfSeparationColor(cs2, 0.5f);brush2 = new PdfSolidBrush(color2);page.Canvas.DrawPie(brush2, 80, 120, 60, 60, 360, 360);color3 = new PdfSeparationColor(cs3, 0.5f);brush3 = new PdfSolidBrush(color3);page.Canvas.DrawPie(brush3, 80, 210, 60, 60, 360, 360);page.Canvas.DrawString("透明度=0.5", new PdfTrueTypeFont(new Font("Arial Unicode MS", 10f), true), brush1, new PointF(86, 100));//将基本色透明度设置为0.25,并绘入图片及文字color1 = new PdfSeparationColor(cs1, 0.25f);brush1 = new PdfSolidBrush(color1);page.Canvas.DrawPie(brush1, 150, 30, 60, 60, 360, 360);color2 = new PdfSeparationColor(cs2, 0.25f);brush2 = new PdfSolidBrush(color2);page.Canvas.DrawPie(brush2, 150, 120, 60, 60, 360, 360);color3 = new PdfSeparationColor(cs3, 0.25f);brush3 = new PdfSolidBrush(color3);page.Canvas.DrawPie(brush3, 150, 210, 60, 60, 360, 360);page.Canvas.DrawString("透明度=0.25", new PdfTrueTypeFont(new Font("Arial Unicode MS", 10f), true), brush1, new PointF(156, 100));//保存并打开文档doc.SaveToFile("设置透明度.pdf");System.Diagnostics.Process.Start("设置透明度.pdf");}}
}