Burn Method

Summary

Burns the annotation objects in Container to the destination context using the existing destination rectangle and resolution (DPI).

Syntax

Objective-C

C++/CLI

Java

Python

public virtual void Burn()

- (void)burn;

public void burn()

public:  
   virtual void Burn()

def Burn(self):

Remarks

This method will call Render with clipRect set to LeadRectD.Empty.

Burning is different from rendering where the object's thumbs and the selection object will not be drawn.

Example

using Leadtools.Annotations.Automation; 
using Leadtools.Annotations.Engine; 
using Leadtools.Annotations.Rendering; 
using Leadtools.Codecs; 
using Leadtools.Annotations; 
using Leadtools.WinForms; 
 
public void AnnRenderingEngine_BurnToRectWithDpi(/*RasterImage image*/) 
{ 
   // _viewer is ImageViewer _automation is working on 
 
   // Get the container 
   AnnContainer container = _automation.Container; 
   RasterImage image = _viewer.Image; 
 
   double inch = 720.0; 
 
   // Add a red line object, from 1in 1in to 2in 2in 
   AnnPolylineObject lineObj = new AnnPolylineObject(); 
   lineObj.Points.Add(LeadPointD.Create(1 * inch, 1 * inch)); 
   lineObj.Points.Add(LeadPointD.Create(2 * inch, 2 * inch)); 
   lineObj.Stroke = AnnStroke.Create(AnnSolidColorBrush.Create("Red"), LeadLengthD.Create(1)); 
   container.Children.Add(lineObj); 
 
   // Add a blue on yellow rectangle from 3in 3in to 4in 4in 
   AnnRectangleObject rectObj = new AnnRectangleObject(); 
   rectObj.Rect = LeadRectD.Create(3 * inch, 3 * inch, 1 * inch, 1 * inch); 
   rectObj.Stroke = AnnStroke.Create(AnnSolidColorBrush.Create("Blue"), LeadLengthD.Create(1)); 
   rectObj.Fill = AnnSolidColorBrush.Create("Yellow"); 
   container.Children.Add(rectObj); 
 
   IAnnAutomationControl annAutomationControl = _automation.AutomationControl; 
 
   RasterColor[] colors = image.GetPalette(); 
   IntPtr hDC = Leadtools.Drawing.RasterImagePainter.CreateLeadDC(image); 
   if (hDC != null) 
   { 
      using (Graphics g = Graphics.FromHdc(hDC)) 
      { 
         // Create a new rendering engine for this container and context 
         AnnWinFormsRenderingEngine renderingEngine = new AnnWinFormsRenderingEngine(container, g); 
 
         // Set the resolution 
         double dpiX = g.DpiX; 
         double dpiY = g.DpiY; 
         double xRes = annAutomationControl.AutomationDpiX; 
         double yRes = annAutomationControl.AutomationDpiY; 
 
         // Burn it 
         renderingEngine.BurnToRectWithDpi(LeadRectD.Empty, dpiX, dpiY, xRes, yRes); 
      } 
 
      Leadtools.Drawing.RasterImagePainter.DeleteLeadDC(hDC); 
   } 
 
   // Delete the objects we added 
   _automation.SelectObjects(container.Children); 
   _automation.DeleteSelectedObjects(); 
 
   // Invalidate to see the burned objects 
   _automation.Invalidate(LeadRectD.Empty); 
}

Requirements

Target Platforms

Reference

AnnRenderingEngine Class

AnnRenderingEngine Members

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Help Version 23.0.2024.2.29

Leadtools.Annotations.Engine Assembly

Introduction

Getting Started

Namespaces

Leadtools.Annotations.Engine Namespace

Assemblies