com.yworks.yfiles.utils

Class ImageSupport

java.lang.Object

com.yworks.yfiles.utils.ImageSupport

public final class ImageSupport
extends Object

Utility class that offers convenience methods for working with Color instances and applies effects to WritableImages.

Method Summary

Modifier and Type	Method and Description
static void	copy(WritableImage sourceImage, WritableImage targetImage, int sx, int sy, int dx, int dy, int width, int height) Copys pixels from an image to another image.
static Color	fromHSB(double hue, double saturation, double brightness, double alpha) Create a color from HSB values.
static float[]	gaussian1D(double theta, int size)
static int[]	gaussian1DScaled(double theta, int size)
static void	gaussianBlur(WritableImage bitmap, double theta, int size)
static void	gaussianBlur(WritableImage bitmap, int[] intkernel)
static WritableImage	getCroppedImage(WritableImage sourceImage, int x, int y, int width, int height) Returns an image that is the cropped version of the given image with the coordinates of the pixels from (x,y) to (x+width, y+height).
static Color	mix(Color color0, Color color1, double ratio) Mixes two colors using the provided ratio.
static double[]	toHSB(Color color) Converts an RGB color value to HSB values.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

copy

public static void copy(WritableImage sourceImage,
                        WritableImage targetImage,
                        int sx,
                        int sy,
                        int dx,
                        int dy,
                        int width,
                        int height)

Copys pixels from an image to another image. Assumes that the given Bitmaps do have enough space to perform this action.

Parameters:

sourceImage - the image to copy the pixels from.

targetImage - the image to copy the pixels to.

sx - the x-coordinate of the first pixel in the sourceImage to copy.

sy - the y-coordinate of the first pixel in the sourceImage to copy.

dx - the x-coordinate of the first pixel in the targetImage to copy.

dy - the y-coordinate of the first pixel in the targetImage to copy.

width - the number of pixels to copy for each row.

height - the number of rows to copy.

fromHSB

public static final Color fromHSB(double hue,
                                  double saturation,
                                  double brightness,
                                  double alpha)

Create a color from HSB values.

gaussian1D

public static final float[] gaussian1D(double theta,
                                       int size)

gaussian1DScaled

public static final int[] gaussian1DScaled(double theta,
                                           int size)

gaussianBlur

public static final void gaussianBlur(WritableImage bitmap,
                                      double theta,
                                      int size)

gaussianBlur

public static final void gaussianBlur(WritableImage bitmap,
                                      int[] intkernel)

getCroppedImage

public static final WritableImage getCroppedImage(WritableImage sourceImage,
                                                  int x,
                                                  int y,
                                                  int width,
                                                  int height)

Returns an image that is the cropped version of the given image with the coordinates of the pixels from (x,y) to (x+width, y+height). This method does not alter the input image, but create a new instance and copy the relevant pixels from the source image into the newly created image.

Parameters:

sourceImage - the source image.

x - the x-coordinate of the first pixel in the source image to crop (pixels to the left are cropped).

y - the y-coordinate of the first pixel in the source image to crop (pixels above are cropped).

width - the width of the cropped image, starting at x (pixels to the right of x+width are cropped).

height - the height of the cropped image, starting at y (pixels below y+height are cropped).

Returns:

A new instance of WritableImage that is width wide and height tall, and contains the pixels of the source image in the area that is defined by x, y, width and height.

mix

public static final Color mix(Color color0,
                              Color color1,
                              double ratio)

Mixes two colors using the provided ratio.

toHSB

public static final double[] toHSB(Color color)

Converts an RGB color value to HSB values.

Parameters:

color - The color.

Returns:

An array of length 4 that contains the following values (in that order): The hue, the saturation, the brightness and the alpha.