public int Index { get; set; }
Public Property Index As Integer
An integer value that indicates the index of the current frame during animation playback.
You can use the Index property to skip frames during a playback if required.
This example uses Index to skip frames during a playback
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.Drawing;
[Ignore()]
public void RasterImageAnimatorIndexExample(Panel panel)
{
// Initialize the RasterCodecs object
RasterCodecs codecs = new RasterCodecs();
// Load the animated GIF file
string fileName = Path.Combine(LEAD_VARS.ImagesDir, "Eye.gif");
RasterImage animatedImage = codecs.Load(fileName);
// Create the target image, we want it to be in the animated image size
RasterImage targetImage = new RasterImage(
RasterMemoryFlags.Conventional,
animatedImage.AnimationGlobalSize.Width,
animatedImage.AnimationGlobalSize.Height,
animatedImage.BitsPerPixel,
animatedImage.Order,
animatedImage.ViewPerspective,
null,
IntPtr.Zero,
0);
// Copy the palette from the animated image to this newly created image
animatedImage.CopyPaletteTo(targetImage);
// Create the RasterImageAnimator object
RasterImageAnimator animator = new RasterImageAnimator(targetImage, animatedImage);
// Animate it
// Use GDI+ paint engine to support transparent colors
RasterPaintProperties props = RasterPaintProperties.Default;
props.PaintEngine = RasterPaintEngine.GdiPlus;
Graphics g = panel.CreateGraphics();
RasterImageAnimatorState state;
do
{
LeadRect srcRect = new LeadRect(0, 0, targetImage.ImageWidth, targetImage.ImageHeight);
LeadRect updateRect;
LeadRect destRect;
int index;
state = animator.Process();
switch (state)
{
case RasterImageAnimatorState.WaitDelay:
case RasterImageAnimatorState.WaitInputDelay:
case RasterImageAnimatorState.Render:
// Continue processing
break;
case RasterImageAnimatorState.WaitInput:
// In case the animated image has the "wait for user input" flags,
// cancel the waiting
animator.CancelWait();
break;
case RasterImageAnimatorState.PreRender:
index = animator.Index;
index++;
animator.Index = index;
break;
case RasterImageAnimatorState.PostRender:
// Get the area in the target image that has changed
updateRect = animator.GetUpdateRectangle(true);
// Paint it
destRect = new LeadRect(0, 0, targetImage.ImageWidth, targetImage.ImageHeight);
RasterImagePainter.Paint(targetImage, g, srcRect, updateRect, destRect, destRect, props);
break;
default:
break;
}
}
while (state != RasterImageAnimatorState.End);
g.Dispose();
animator.Dispose();
targetImage.Dispose();
animatedImage.Dispose();
codecs.Dispose();
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS21\Resources\Images";
}
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.ImageProcessing
Imports Leadtools.Drawing
Sub RasterImageAnimatorIndexExample(ByVal panel As Panel)
' Initialize the RasterCodecs object
Dim codecs As New RasterCodecs()
' Load the animated GIF file
Dim fileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Eye.gif")
Dim animatedImage As RasterImage = codecs.Load(fileName)
' Create the target image, we want it to be in the animated image size
Dim targetImage As New RasterImage(
RasterMemoryFlags.Conventional,
animatedImage.AnimationGlobalSize.Width,
animatedImage.AnimationGlobalSize.Height,
animatedImage.BitsPerPixel,
animatedImage.Order,
animatedImage.ViewPerspective,
Nothing,
IntPtr.Zero,
0)
' Copy the palette from the animated image to this newly created image
animatedImage.CopyPaletteTo(targetImage)
' Create the RasterImageAnimator object
Dim animator As New RasterImageAnimator(targetImage, animatedImage)
' Animate it
' Use GDI+ paint engine to support transparent colors
Dim props As RasterPaintProperties = RasterPaintProperties.Default
props.PaintEngine = RasterPaintEngine.GdiPlus
Dim g As Graphics = panel.CreateGraphics()
Dim state As RasterImageAnimatorState
Do
Dim srcRect As New LeadRect(0, 0, targetImage.ImageWidth, targetImage.ImageHeight)
Dim updateRect As LeadRect
Dim destRect As LeadRect
Dim index As Integer
state = animator.Process()
Select Case (state)
Case RasterImageAnimatorState.WaitDelay,
RasterImageAnimatorState.WaitInputDelay,
RasterImageAnimatorState.Render
'Continue processing
Case RasterImageAnimatorState.WaitInput
' In case the animated image has the "wait for user input" flags,
' cancel the waiting
animator.CancelWait()
Case RasterImageAnimatorState.PreRender
index = animator.Index
index = index + 1
animator.Index = index
Case RasterImageAnimatorState.PostRender
' Get the area in the target image that has changed
updateRect = animator.GetUpdateRectangle(True)
' Paint it
destRect = New LeadRect(0, 0, targetImage.ImageWidth, targetImage.ImageHeight)
RasterImagePainter.Paint(targetImage, g, srcRect, updateRect, destRect, destRect, props)
End Select
Loop While (state <> RasterImageAnimatorState.End)
g.Dispose()
animator.Dispose()
targetImage.Dispose()
animatedImage.Dispose()
codecs.Dispose()
End Sub
Public NotInheritable Class LEAD_VARS
Public Const ImagesDir As String = "C:\LEADTOOLS21\Resources\Images"
End Class
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