Start Method (original) (raw)

Syntax

Parameters

oldWidth
Specifies the original width of the image.

oldHeight
Specifies the original height of the image.

newWidth
Specifies the new width for the image.

newHeight
Specifies the new height for the image.

Example

using Leadtools; using Leadtools.Codecs; public void RasterBufferResizeExample() { string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"); string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1_resized.bmp"); using (RasterCodecs codecs = new RasterCodecs()) { codecs.ThrowExceptionsOnInvalidImages = true; // Load the source image using (RasterImage srcImage = codecs.Load(srcFileName)) { int destWidth = srcImage.Width / 2; int destHeight = srcImage.Height / 2; // Create the destination image using (RasterImage destImage = new RasterImage( RasterMemoryFlags.Conventional, destWidth, destHeight, srcImage.BitsPerPixel, srcImage.Order, srcImage.ViewPerspective, srcImage.GetPalette(), IntPtr.Zero, 0)) { // allocate buffer for one scanline from source image byte[] scanLine = new byte[srcImage.BytesPerLine]; // resize it RasterBufferResize bufferResize = new RasterBufferResize(); // Initialize the resize process. bufferResize.Start(srcImage.Width, srcImage.Height, destImage.Width, destImage.Height); srcImage.Access(); destImage.Access(); // Current destination row number int destRow = 0; for (int i = 0; i < srcImage.Height; i++) { // Get a scanline from the source image and resize it srcImage.GetRow(i, scanLine, 0, srcImage.BytesPerLine); bufferResize.ResizeBuffer(scanLine, 0, i, srcImage.BitsPerPixel); // Output as many or as few rows as ResizeBuffer supplies for (int j = 0; j < bufferResize.CopyRepetitions; j++) { destImage.SetRow(destRow, scanLine, 0, bufferResize.LineWidth * 3); destRow++; } } destImage.Release(); srcImage.Release(); bufferResize.Stop(); // Save the destination image codecs.Save(destImage, destFileName, RasterImageFormat.Bmp, 24); } } } } static class LEAD_VARS { public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; }

Leadtools Assembly

Convert(byte[],int,int,int,int,RasterByteOrder,RasterByteOrder,RasterColor[],RasterColor[],int,int,int,RasterConvertBufferFlags) Method

Convert(byte[],int,int,int,int,RasterByteOrder,RasterByteOrder,RasterColor[],RasterColor[],RasterColor16[],RasterColor16[],int,int,int,RasterConvertBufferFlags) Method

Convert(IntPtr,int,int,int,RasterByteOrder,RasterByteOrder,RasterColor[],RasterColor[],int,int,int,RasterConvertBufferFlags) Method

Convert(IntPtr,int,int,int,RasterByteOrder,RasterByteOrder,RasterColor[],RasterColor[],RasterColor16[],RasterColor16[],int,int,int,RasterConvertBufferFlags) Method