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This sample shows how to customize a way in which semi-transparent objects will blend on a canvas.
C# :
using PDFMosaic; using System.Drawing; namespace BlendMode { class BlendMode { static void Main() { PDFDocument document = new PDFDocument(); document.Pages.Add(new PDFPage(PDFPaperFormat.A4)); PDFCanvas canvas = document.Pages[0].Canvas; PDFDeviceColor red = new PDFColorRGB(255, 0, 0); PDFDeviceColor green = new PDFColorRGB(0, 255, 0); PDFDeviceColor blue = new PDFColorRGB(0, 0, 255); PDFSolidBrush brushRed = new PDFSolidBrush(red); PDFSolidBrush brushGreen = new PDFSolidBrush(green); PDFSolidBrush brushBlue = new PDFSolidBrush(blue); PDFSolidPen pen = new PDFSolidPen(); canvas.DrawCircle(brushRed, 300, 300, 50); canvas.DrawCircle(brushGreen, 300, 350, 50); canvas.DrawCircle(brushBlue, 350, 300, 50); canvas.BlendMode = PDFBlendMode.Screen; canvas.DrawCircle(brushRed, 100, 100, 50); canvas.DrawCircle(brushGreen, 100, 150, 50); canvas.DrawCircle(brushBlue, 150, 100, 50); canvas.BlendMode = PDFBlendMode.Darken; canvas.DrawCircle(brushRed, 300, 100, 50); canvas.DrawCircle(brushGreen, 300, 150, 50); canvas.DrawCircle(brushBlue, 350, 100, 50); canvas.BlendMode = PDFBlendMode.Hue; canvas.DrawCircle(brushRed, 100, 300, 50); canvas.DrawCircle(brushGreen, 100, 350, 50); canvas.DrawCircle(brushBlue, 150, 300, 50); document.Save("BlendMode.pdf", true); } } }
Visial Basic.NET :
Imports PDFMosaic Imports System.Drawing Module BlendMode Sub Main() Dim document As PDFDocument = New PDFDocument() document.Pages.Add(New PDFPage(PDFPaperFormat.A4)) Dim canvas As PDFCanvas = document.Pages(0).Canvas Dim red As PDFDeviceColor = New PDFColorRGB(255, 0, 0) Dim green As PDFDeviceColor = New PDFColorRGB(0, 255, 0) Dim blue As PDFDeviceColor = New PDFColorRGB(0, 0, 255) Dim brushRed As PDFSolidBrush = New PDFSolidBrush(red) Dim brushGreen As PDFSolidBrush = New PDFSolidBrush(green) Dim brushBlue As PDFSolidBrush = New PDFSolidBrush(blue) Dim pen As PDFSolidPen = New PDFSolidPen() canvas.DrawCircle(brushRed, 300, 300, 50) canvas.DrawCircle(brushGreen, 300, 350, 50) canvas.DrawCircle(brushBlue, 350, 300, 50) canvas.BlendMode = PDFBlendMode.Screen canvas.DrawCircle(brushRed, 100, 100, 50) canvas.DrawCircle(brushGreen, 100, 150, 50) canvas.DrawCircle(brushBlue, 150, 100, 50) canvas.BlendMode = PDFBlendMode.Darken canvas.DrawCircle(brushRed, 300, 100, 50) canvas.DrawCircle(brushGreen, 300, 150, 50) canvas.DrawCircle(brushBlue, 350, 100, 50) canvas.BlendMode = PDFBlendMode.Hue canvas.DrawCircle(brushRed, 100, 300, 50) canvas.DrawCircle(brushGreen, 100, 350, 50) canvas.DrawCircle(brushBlue, 150, 300, 50) document.Save("BlendMode.pdf", True) End Sub End Module
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