Class RasterCachedImage
nazivni prostor: Aspose.Imaging Sastav: Aspose.Imaging.dll (25.4.0)
Predstavlja raster sliku koja podržava raster grafike operacije. ova slika cache pixel podatke kada je potrebno.
public abstract class RasterCachedImage : RasterImage, IDisposable, IObjectWithBounds, IRasterImageArgb32PixelLoader, IRasterImageRawDataLoader, IHasXmpData, IHasMetadataInheritance
object ← DisposableObject ← DataStreamSupporter ← Image ← RasterImage ← RasterCachedImage
Derived
ApngFrame , AvifImage , BmpImage , DicomPage , DjvuPage , DjvuRaster , DngImage , GifFrameBlock , Jpeg2000Image , JpegImage , PngImage , RasterCachedMultipageImage , TgaImage , TiffFrame , WebPFrameBlock
Implements
IDisposable , IObjectWithBounds , IRasterImageArgb32PixelLoader , IRasterImageRawDataLoader , IHasXmpData , IHasMetadata
naslijeđeni članovi
RasterImage.xmpData , RasterImage.RemoveMetadata() , RasterImage.Save(Stream, ImageOptionsBase, Rectangle) , RasterImage.GetModifyDate(bool) , RasterImage.Dither(DitheringMethod, int) , RasterImage.Dither(DitheringMethod, int, IColorPalette) , RasterImage.GetDefaultPixels(Rectangle, IPartialArgb32PixelLoader) , RasterImage.GetDefaultRawData(Rectangle, IPartialRawDataLoader, RawDataSettings) , RasterImage.GetDefaultArgb32Pixels(Rectangle) , RasterImage.GetDefaultRawData(Rectangle, RawDataSettings) , RasterImage.GetArgb32Pixel(int, int) , RasterImage.GetPixel(int, int) , RasterImage.SetArgb32Pixel(int, int, int) , RasterImage.SetPixel(int, int, Color) , RasterImage.ReadScanLine(int) , RasterImage.ReadArgb32ScanLine(int) , RasterImage.WriteScanLine(int, Color[]) , RasterImage.WriteArgb32ScanLine(int, int[]) , RasterImage.LoadPartialArgb32Pixels(Rectangle, IPartialArgb32PixelLoader) , RasterImage.LoadPartialPixels(Rectangle, IPartialPixelLoader) , RasterImage.LoadArgb32Pixels(Rectangle) , RasterImage.LoadArgb64Pixels(Rectangle) , RasterImage.LoadPartialArgb64Pixels(Rectangle, IPartialArgb64PixelLoader) , RasterImage.LoadPixels(Rectangle) , RasterImage.LoadCmykPixels(Rectangle) , RasterImage.LoadCmyk32Pixels(Rectangle) , RasterImage.LoadRawData(Rectangle, RawDataSettings, IPartialRawDataLoader) , RasterImage.LoadRawData(Rectangle, Rectangle, RawDataSettings, IPartialRawDataLoader) , RasterImage.SaveRawData(byte[], int, Rectangle, RawDataSettings) , RasterImage.SaveArgb32Pixels(Rectangle, int[]) , RasterImage.SavePixels(Rectangle, Color[]) , RasterImage.SaveCmykPixels(Rectangle, CmykColor[]) , RasterImage.SaveCmyk32Pixels(Rectangle, int[]) , RasterImage.SetResolution(double, double) , RasterImage.SetPalette(IColorPalette, bool) , RasterImage.Resize(int, int, ImageResizeSettings) , RasterImage.Rotate(float, bool, Color) , RasterImage.Rotate(float) , RasterImage.BinarizeFixed(byte) , RasterImage.BinarizeOtsu() , RasterImage.BinarizeBradley(double) , RasterImage.BinarizeBradley(double, int) , RasterImage.Blend(Point, RasterImage, Rectangle, byte) , RasterImage.Blend(Point, RasterImage, byte) , RasterImage.Grayscale() , RasterImage.NormalizeHistogram() , RasterImage.AdjustBrightness(int) , RasterImage.AdjustContrast(float) , RasterImage.AdjustGamma(float, float, float) , RasterImage.AdjustGamma(float) , RasterImage.GetSkewAngle() , RasterImage.NormalizeAngle() , RasterImage.NormalizeAngle(bool, Color) , RasterImage.Filter(Rectangle, FilterOptionsBase) , RasterImage.ReplaceColor(Color, byte, Color) , RasterImage.ReplaceColor(int, byte, int) , RasterImage.ReplaceNonTransparentColors(Color) , RasterImage.ReplaceNonTransparentColors(int) , RasterImage.ToBitmap() , RasterImage.ReleaseManagedResources() , RasterImage.UpdateMetadata() , RasterImage.UpdateDimensions(int, int) , RasterImage.PremultiplyComponents , RasterImage.UseRawData , RasterImage.UpdateXmpData , RasterImage.XmpData , RasterImage.RawIndexedColorConverter , RasterImage.RawCustomColorConverter , RasterImage.RawFallbackIndex , RasterImage.RawDataSettings , RasterImage.UsePalette , RasterImage.RawDataFormat , RasterImage.RawLineSize , RasterImage.IsRawDataAvailable , RasterImage.HorizontalResolution , RasterImage.VerticalResolution , RasterImage.HasTransparentColor , RasterImage.HasAlpha , RasterImage.TransparentColor , RasterImage.ImageOpacity , RasterImage.DataLoader , Image.CanLoad(string) , Image.CanLoad(string, LoadOptions) , Image.CanLoad(Stream) , Image.CanLoad(Stream, LoadOptions) , Image.Create(ImageOptionsBase, int, int) , Image.Create(Image[]) , Image.Create(MultipageCreateOptions) , Image.Create(string[], bool) , Image.Create(string[]) , Image.Create(Image[], bool) , Image.GetFileFormat(string) , Image.GetFileFormat(Stream) , Image.GetFittingRectangle(Rectangle, int, int) , Image.GetFittingRectangle(Rectangle, int[], int, int) , Image.Load(string, LoadOptions) , Image.Load(string) , Image.Load(Stream, LoadOptions) , Image.Load(Stream) , Image.GetProportionalWidth(int, int, int) , Image.GetProportionalHeight(int, int, int) , Image.RemoveMetadata() , Image.CanSave(ImageOptionsBase) , Image.Resize(int, int) , Image.Resize(int, int, ResizeType) , Image.Resize(int, int, ImageResizeSettings) , Image.GetDefaultOptions(object[]) , Image.GetOriginalOptions() , Image.ResizeWidthProportionally(int) , Image.ResizeHeightProportionally(int) , Image.ResizeWidthProportionally(int, ResizeType) , Image.ResizeHeightProportionally(int, ResizeType) , Image.ResizeWidthProportionally(int, ImageResizeSettings) , Image.ResizeHeightProportionally(int, ImageResizeSettings) , Image.RotateFlip(RotateFlipType) , Image.Rotate(float) , Image.Crop(Rectangle) , Image.Crop(int, int, int, int) , Image.Save() , Image.Save(string) , Image.Save(string, ImageOptionsBase) , Image.Save(string, ImageOptionsBase, Rectangle) , Image.Save(Stream, ImageOptionsBase) , Image.Save(Stream, ImageOptionsBase, Rectangle) , Image.GetSerializedStream(ImageOptionsBase, Rectangle, out int) , Image.SetPalette(IColorPalette, bool) , Image.UpdateContainer(Image) , Image.GetCanNotSaveMessage(ImageOptionsBase) , Image.GetFitRectangle(Rectangle) , Image.GetImage2Export(ImageOptionsBase, Rectangle, IImageExporter) , Image.GetFitRectangle(Rectangle, int[]) , Image.OnPaletteChanged(IColorPalette, IColorPalette) , Image.OnPaletteChanging(IColorPalette, IColorPalette) , Image.ReleaseManagedResources() , Image.BitsPerPixel , Image.Bounds , Image.Container , Image.Height , Image.Palette , Image.UsePalette , Image.Size , Image.Width , Image.InterruptMonitor , Image.BufferSizeHint , Image.AutoAdjustPalette , Image.HasBackgroundColor , Image.FileFormat , Image.BackgroundColor , DataStreamSupporter.timeout , DataStreamSupporter.CacheData() , DataStreamSupporter.Save() , DataStreamSupporter.Save(Stream) , DataStreamSupporter.Save(string) , DataStreamSupporter.Save(string, bool) , DataStreamSupporter.SaveData(Stream) , DataStreamSupporter.ReleaseManagedResources() , DataStreamSupporter.OnDataStreamContainerChanging(StreamContainer) , DataStreamSupporter.DataStreamContainer , DataStreamSupporter.IsCached , DisposableObject.Dispose() , DisposableObject.ReleaseManagedResources() , DisposableObject.ReleaseUnmanagedResources() , DisposableObject.VerifyNotDisposed() , DisposableObject.Disposed , object.GetType() , object.MemberwiseClone() , object.ToString() , object.Equals(object?) , object.Equals(object?, object?) , object.ReferenceEquals(object?, object?) , object.GetHashCode()
Examples
Sljedeći primjer pretvara crvenu rasteru prikazanu sliku u njezinu grayscale reprezentaciju. Grayscal slike sastoje se isključivo od sjene sive i nose samo informacije o intenzitetu.
string dir = "c:\\temp\\";
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.png"))
{
Aspose.Imaging.RasterCachedImage rasterImage = (Aspose.Imaging.RasterCachedImage)image;
rasterImage.Grayscale();
rasterImage.Save(dir + "sample.Grayscale.png");
}Constructors
RasterCachedImage()
Inicijalizira novu primjenu Aspose.Imaging.RasterCachedImage klase.
protected RasterCachedImage()RasterCachedImage(ICOLORPALETE)
Inicijalizira novu primjenu Aspose.Imaging.RasterCachedImage klase.
protected RasterCachedImage(IColorPalette colorPalette)Parameters
colorPalette IColorPalette
Boja je paleta.
Properties
IsCached
Dobiva vrijednost koja ukazuje da li su podaci o slici trenutno sakriveni.
public override bool IsCached { get; }Vrijednost nekretnina
Methods
AdjustBrightness(int)
Prilagoditi svjetlost za sliku.
public override void AdjustBrightness(int brightness)Parameters
brightness int
Vrijednost svjetlosti
Examples
Sljedeći primjer izvršava korekciju svjetlosti raster cached slike.
string dir = "c:\\temp\\";
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.png"))
{
Aspose.Imaging.RasterCachedImage rasterImage = (Aspose.Imaging.RasterCachedImage)image;
// Set the brightness value. The accepted values of brightness are in the range [-255, 255].
rasterImage.AdjustBrightness(50);
rasterImage.Save(dir + "sample.AdjustBrightness.png");
}AdjustContrast(float)
kontrast slike
public override void AdjustContrast(float contrast)Parameters
contrast float
Vrijednost kontrasta (u rasponu [-100; 100])
Examples
Sljedeći primjer provodi kontrastno ispravljanje raster cached slike.
string dir = "c:\\temp\\";
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.png"))
{
Aspose.Imaging.RasterCachedImage rasterImage = (Aspose.Imaging.RasterCachedImage)image;
// Set the contrast value. The accepted values of contrast are in the range [-100f, 100f].
rasterImage.AdjustContrast(50);
rasterImage.Save(dir + "sample.AdjustContrast.png");
}AdjustGamma(plovilo, plovilo i plovilo)
Gamma korekcija slike.
public override void AdjustGamma(float gammaRed, float gammaGreen, float gammaBlue)Parameters
gammaRed float
Gamma za koeficijenta crvenog kanala
gammaGreen float
Gamma za zeleni kanal koeficijenta
gammaBlue float
Gamma za kofein plavog kanala
Examples
Sljedeći primjer izvršava gamma-korekciju raster cached slike primjenom različitih koeficijenata za komponente boje.
string dir = "c:\\temp\\";
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.png"))
{
Aspose.Imaging.RasterCachedImage rasterImage = (Aspose.Imaging.RasterCachedImage)image;
// Set individual gamma coefficients for red, green and blue channels.
rasterImage.AdjustGamma(1.5f, 2.5f, 3.5f);
rasterImage.Save(dir + "sample.AdjustGamma.png");
}AdjustGamma(float)
Gamma korekcija slike.
public override void AdjustGamma(float gamma)Parameters
gamma float
Gamma za koeficijenta crvenih, zelenih i plavih kanala
Examples
Sljedeći primjer provodi gamma-korekciju raster cached slike.
string dir = "c:\\temp\\";
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.png"))
{
Aspose.Imaging.RasterCachedImage rasterImage = (Aspose.Imaging.RasterCachedImage)image;
// Set gamma coefficient for red, green and blue channels.
rasterImage.AdjustGamma(2.5f);
rasterImage.Save(dir + "sample.AdjustGamma.png");
}BinarizeBradley(Dvostruka, int)
Binarizacija slike pomoću Bradleyjevog adaptivnog pragova algoritma pomoću integriranog pragova slike
public override void BinarizeBradley(double brightnessDifference, int windowSize)Parameters
brightnessDifference double
Razlika u svjetlosti između piksela i prosjeka prozora s x s piksela usredotočenog oko ovog piksela.
windowSize int
Veličina s x s prozora piksela usredotočenih oko ovog piksela
Examples
Sljedeći primjer binarizira raster cached sliku s Bradleyjevim adaptivnim algoritmom ograničenja s određenom veličinom prozora.
string dir = "c:\\temp\\";
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.png"))
{
Aspose.Imaging.RasterCachedImage rasterImage = (Aspose.Imaging.RasterCachedImage)image;
// Binarize the image with a brightness difference of 5.
// The brightness is a difference between a pixel and the average of an 10 x 10 window of pixels centered around this pixel.
rasterImage.BinarizeBradley(5, 10);
rasterImage.Save(dir + "sample.BinarizeBradley5_10x10.png");
}BinarizeBradley(Dvostruko)
Binarizacija slike pomoću Bradleyjevog adaptivnog pragova algoritma pomoću integriranog pragova slike
public override void BinarizeBradley(double brightnessDifference)Parameters
brightnessDifference double
Razlika u svjetlosti između piksela i prosjeka prozora s x s piksela usredotočenog oko ovog piksela.
Examples
Sljedeći primjer binarizira raster cached sliku s Bradleyjevim adaptivnim algoritmom ograničenja.
string dir = "c:\\temp\\";
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.png"))
{
Aspose.Imaging.RasterCachedImage rasterImage = (Aspose.Imaging.RasterCachedImage)image;
// Binarize the image with a brightness difference of 5.
// The brightness is a difference between a pixel and the average of an s x s window of pixels centered around this pixel.
// The size of window will be calibrated automatically.
rasterImage.BinarizeBradley(5);
rasterImage.Save(dir + "sample.BinarizeBradley5.png");
}BinarizeFixed(byte)
Binarizacija slike s unaprijed definiranim pragom
public override void BinarizeFixed(byte threshold)Parameters
threshold byte
Ako je odgovarajuća siva vrijednost piksela veća od granice, vrijednost od 255 će joj biti dodijeljena, 0 drugačije.
Examples
Sljedeći primjer binarizira raster cached sliku s unaprijed definiranim pragom. binarne slike sadrže samo 2 boje - crno i bijelo.
string dir = "c:\\temp\\";
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.png"))
{
Aspose.Imaging.RasterCachedImage rasterImage = (Aspose.Imaging.RasterCachedImage)image;
// Binarize the image with a threshold value of 127.
// If a corresponding gray value of a pixel is greater than 127, a value of 255 will be assigned to it, 0 otherwise.
rasterImage.BinarizeFixed(127);
rasterImage.Save(dir + "sample.BinarizeFixed.png");
}BinarizeOtsu()
Binarizacija slike s Otsu ograničenjem
public override void BinarizeOtsu()Examples
Sljedeći primjer binarizira raster cached sliku s Otsu ograničenja. binarne slike sadrže samo 2 boje - crno i bijelo.
string dir = "c:\\temp\\";
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.png"))
{
Aspose.Imaging.RasterCachedImage rasterImage = (Aspose.Imaging.RasterCachedImage)image;
// Binarize the image with Otsu thresholding.
rasterImage.BinarizeOtsu();
rasterImage.Save(dir + "sample.BinarizeOtsu.png");
}Blend(Točka, RasterImage, Rectangle, byte)
Pomiješajte ovaj primjer slike s slikom overlay".
public override void Blend(Point origin, RasterImage overlay, Rectangle overlayArea, byte overlayAlpha = 255)Parameters
origin Point
Slika pozadine miješanog porijekla.
overlay RasterImage
Iznenađujuća je slika.
overlayArea Rectangle
Područje za preopterećenje.
overlayAlpha byte
Slijedeći članakAlfa.
CacheData()
Čišćenje podataka i osigurava da se neće izvršiti dodatni teret podataka iz podrijetla Aspose.Imaging.DataStreamSupporter.
public override void CacheData()Examples
Sljedeći primjer pokazuje kako raster caching slike utječe na performanse.U općem slučaju, čitanje cache podataka obavlja se brže od čitanja ne-cache podataka.
string dir = "c:\\temp\\";
// Load an image from a PNG file.
using (Aspose.Imaging.RasterCachedImage image = (Aspose.Imaging.RasterCachedImage)Aspose.Imaging.Image.Load(dir + "sample.png"))
{
// Cache all pixel data so that no additional data loading will be performed from the underlying data stream
image.CacheData();
System.Diagnostics.Stopwatch stopwatch = new System.Diagnostics.Stopwatch();
stopwatch.Start();
// Reading all pixels is pretty fast.
for (int y = 0; y < image.Height; y++)
{
for (int x = 0; x < image.Width; x++)
{
int color = image.GetArgb32Pixel(x, y);
}
}
stopwatch.Stop();
System.Console.WriteLine("Reading all cached pixels took {0} ms.", stopwatch.ElapsedMilliseconds);
}
// Load an image from a PNG file
using (Aspose.Imaging.RasterCachedImage image = (Aspose.Imaging.RasterCachedImage)Aspose.Imaging.Image.Load(dir + "sample.png"))
{
System.Diagnostics.Stopwatch stopwatch = new System.Diagnostics.Stopwatch();
stopwatch.Start();
// Reading all pixels is not as fast as when caching
for (int y = 0; y < image.Height; y++)
{
for (int x = 0; x < image.Width; x++)
{
int color = image.GetArgb32Pixel(x, y);
}
}
stopwatch.Stop();
System.Console.WriteLine("Reading all pixels without preliminary caching took {0} ms.", stopwatch.ElapsedMilliseconds);
}
// The output may look like this:
// Reading all cached pixels took 1500 ms.
// Reading all pixels without preliminary caching took 150000 ms.Crop(Rectangle)
Korištenje slike.
public override void Crop(Rectangle rectangle)Parameters
rectangle Rectangle
U pravom dijelu.
Examples
Sljedeći primjer uzgaja raster cached sliku. područje uzgoja određuje se putem Aspose.Imaging.Rectangle.
string dir = @"c:\temp\";
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.png"))
{
Aspose.Imaging.RasterCachedImage rasterImage = (Aspose.Imaging.RasterCachedImage)image;
// Crop the image. The cropping area is the rectangular central area of the image.
Aspose.Imaging.Rectangle area = new Aspose.Imaging.Rectangle(rasterImage.Width / 4, rasterImage.Height / 4, rasterImage.Width / 2, rasterImage.Height / 2);
rasterImage.Crop(area);
// Save the cropped image to PNG
rasterImage.Save(dir + "sample.Crop.png");
}Dither(DitheringMetoda, int, IColorPalette)
To se događa na trenutnoj slici.
public override void Dither(DitheringMethod ditheringMethod, int bitsCount, IColorPalette customPalette)Parameters
ditheringMethod DitheringMethod
Metoda za iscjedak.
bitsCount int
Konačni bitovi računaju za dithering.
customPalette IColorPalette
Korištenje prilagođene palete za dijetiranje.
Grayscale()
Promjena slike u njezinu grayscale reprezentaciju
public override void Grayscale()Examples
Sljedeći primjer pretvara crvenu rasteru prikazanu sliku u njezinu grayscale reprezentaciju. Grayscal slike sastoje se isključivo od sjene sive i nose samo informacije o intenzitetu.
string dir = "c:\\temp\\";
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.png"))
{
Aspose.Imaging.RasterCachedImage rasterImage = (Aspose.Imaging.RasterCachedImage)image;
rasterImage.Grayscale();
rasterImage.Save(dir + "sample.Grayscale.png");
}NormalizeHistogram()
Normalizira histogram slike – prilagođava vrijednosti piksela za korištenje svih dostupnih opsega.
public override void NormalizeHistogram()OnCached()
Naziva se kada se podaci sakrivaju i svi povezani resursi mogu biti de-određeni.
protected virtual void OnCached()OnPaletteChanged(Sljedeći članakSljedeći članakSljedeći članakIcolorPalette)
Naziva se kada se paleta mijenja.
protected override void OnPaletteChanged(IColorPalette oldPalette, IColorPalette newPalette)Parameters
oldPalette IColorPalette
Stara je paleta.
newPalette IColorPalette
Nova je paleta.
Resize(int, int, resizeType)
Obnavljajte sliku.
public override void Resize(int newWidth, int newHeight, ResizeType resizeType)Parameters
newWidth int
U novoj širini.
newHeight int
U novoj visini.
resizeType ResizeType
Vrsta povlačenja.
Examples
Ovaj primjer opterećuje raster cached sliku i reciklira ga pomoću različitih metoda recidiva.
string dir = "c:\\temp\\";
using (Aspose.Imaging.RasterCachedImage image = (Aspose.Imaging.RasterCachedImage)Aspose.Imaging.Image.Load(dir + "sample.png"))
{
// Scale up by 2 times using Nearest Neighbour resampling.
image.Resize(image.Width* 2, image.Height* 2, Aspose.Imaging.ResizeType.NearestNeighbourResample);
// Save to PNG with default options.
image.Save(dir + "upsample.nearestneighbour.png", new Aspose.Imaging.ImageOptions.PngOptions());
}
using (Aspose.Imaging.RasterCachedImage image = (Aspose.Imaging.RasterCachedImage)Aspose.Imaging.Image.Load(dir + "sample.png"))
{
// Scale down by 2 times using Nearest Neighbour resampling.
image.Resize(image.Width / 2, image.Height / 2, Aspose.Imaging.ResizeType.NearestNeighbourResample);
// Save to PNG with default options.
image.Save(dir + "downsample.nearestneighbour.png", new Aspose.Imaging.ImageOptions.PngOptions());
}
using (Aspose.Imaging.RasterCachedImage image = (Aspose.Imaging.RasterCachedImage)Aspose.Imaging.Image.Load(dir + "sample.png"))
{
// Scale up by 2 times using Bilinear resampling.
image.Resize(image.Width* 2, image.Height* 2, Aspose.Imaging.ResizeType.BilinearResample);
// Save to PNG with default options.
image.Save(dir + "upsample.bilinear.png", new Aspose.Imaging.ImageOptions.PngOptions());
}
using (Aspose.Imaging.RasterCachedImage image = (Aspose.Imaging.RasterCachedImage)Aspose.Imaging.Image.Load(dir + "sample.png"))
{
// Scale down by 2 times using Bilinear resampling.
image.Resize(image.Width / 2, image.Height / 2, Aspose.Imaging.ResizeType.BilinearResample);
// Save to PNG with default options.
image.Save(dir + "downsample.bilinear.png", new Aspose.Imaging.ImageOptions.PngOptions());
}Resize(int, int, ImageResizeUredi)
Obnavljajte sliku.
public override void Resize(int newWidth, int newHeight, ImageResizeSettings settings)Parameters
newWidth int
U novoj širini.
newHeight int
U novoj visini.
settings ImageResizeSettings
Određivanje nastavaka.
Examples
Ovaj primjer preuzima raster cached sliku i ponavlja ga pomoću različitih ponovnih postavki.
string dir = "c:\\temp\\";
Aspose.Imaging.ImageResizeSettings resizeSettings = new Aspose.Imaging.ImageResizeSettings();
// The adaptive algorithm based on weighted and blended rational function and lanczos3 interpolation.
resizeSettings.Mode = Aspose.Imaging.ResizeType.AdaptiveResample;
// The small rectangular filter
resizeSettings.FilterType = Aspose.Imaging.ImageFilterType.SmallRectangular;
// The number of colors in the palette.
resizeSettings.EntriesCount = 256;
// The color quantization is not used
resizeSettings.ColorQuantizationMethod = ColorQuantizationMethod.None;
// The euclidian method
resizeSettings.ColorCompareMethod = ColorCompareMethod.Euclidian;
using (Aspose.Imaging.RasterCachedImage image = (Aspose.Imaging.RasterCachedImage)Aspose.Imaging.Image.Load(dir + "sample.png"))
{
// Scale down by 2 times using adaptive resampling.
image.Resize(image.Width / 2, image.Height / 2, resizeSettings);
image.Save(dir + "downsample.adaptive.png", new Aspose.Imaging.ImageOptions.PngOptions());
}Rotate(Float, bool, boja i boja)
Rotacija slike oko središta.
public override void Rotate(float angle, bool resizeProportionally, Color backgroundColor)Parameters
angle float
Okretni kut u stupanjima. pozitivne vrijednosti će se okrenuti na sat.
resizeProportionally bool
ako ste postavljeni na ‘pravi’ promijenit ćete veličinu slike u skladu s rotacijskim rektangularnim (kornim točkama) projekcijama u drugim slučajevima koje ostavljaju dimenzije bez dodira i samo unutarnje sadržaje slike su rotacije.
backgroundColor Color
Boja pozadine.
RotateFlip(RotateFlipType)
Vrti, flips, ili vrti i flips sliku.
public override void RotateFlip(RotateFlipType rotateFlipType)Parameters
rotateFlipType RotateFlipType
Vrsta rotirajućeg flip.
Examples
Ovaj primjer opterećuje raster cached sliku, vrti ga po 90 stupnjeva na sat i opcionalno flips slika horizontalno i (ili) vertikalno.
string dir = "c:\\temp\\";
Aspose.Imaging.RotateFlipType[] rotateFlipTypes = new Aspose.Imaging.RotateFlipType[]
{
Aspose.Imaging.RotateFlipType.Rotate90FlipNone,
Aspose.Imaging.RotateFlipType.Rotate90FlipX,
Aspose.Imaging.RotateFlipType.Rotate90FlipXY,
Aspose.Imaging.RotateFlipType.Rotate90FlipY,
};
foreach (Aspose.Imaging.RotateFlipType rotateFlipType in rotateFlipTypes)
{
// Rotate, flip and save to the output file.
using (Aspose.Imaging.RasterCachedImage image = (Aspose.Imaging.RasterCachedImage)Aspose.Imaging.Image.Load(dir + "sample.bmp"))
{
image.RotateFlip(rotateFlipType);
image.Save(dir + "sample." + rotateFlipType + ".bmp");
}
}
