/**
* BiLinearGradient.java
*
* Copyright (c) 2011-2014, JFXtras
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the organization nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package jfxtras.labs.util;
import javafx.animation.Interpolator;
import javafx.scene.image.Image;
import javafx.scene.image.PixelWriter;
import javafx.scene.image.WritableImage;
import javafx.scene.paint.Color;
import javafx.scene.paint.ImagePattern;
import javafx.scene.shape.Shape;
/**
* Created by
* User: hansolo
* Date: 17.07.12
* Time: 08:13
*/
public class BiLinearGradient {
private final Color COLOR_00;
private final Color COLOR_10;
private final Color COLOR_01;
private final Color COLOR_11;
// ******************** Constructors **************************************
public BiLinearGradient(final Color COLOR_00, final Color COLOR_10, final Color COLOR_01, final Color COLOR_11) {
// Set the values
this.COLOR_00 = COLOR_00;
this.COLOR_10 = COLOR_10;
this.COLOR_01 = COLOR_01;
this.COLOR_11 = COLOR_11;
}
// ******************** Methods *******************************************
private Color biLinearInterpolateColor(final Color COL_00, final Color COL_10, final Color COL_01, final Color COL_11, final double FRAC_X, final double FRAC_Y) {
final Color INTERPOLATED_COLOR_X1 = (Color) Interpolator.LINEAR.interpolate(COL_00, COL_10, FRAC_X);
final Color INTERPOLATED_COLOR_X2 = (Color) Interpolator.LINEAR.interpolate(COL_01, COL_11, FRAC_X);
return (Color) Interpolator.LINEAR.interpolate(INTERPOLATED_COLOR_X1, INTERPOLATED_COLOR_X2, FRAC_Y);
}
public Image getImage(final double WIDTH, final double HEIGHT) {
int width = (int) WIDTH <= 0 ? 100 : (int) WIDTH;
int height = (int) HEIGHT <= 0 ? 100 : (int) HEIGHT;
final WritableImage RASTER = new WritableImage(width, height);
final PixelWriter PIXEL_WRITER = RASTER.getPixelWriter();
final double FRACTION_STEP_X = 1.0 / (WIDTH - 1);
final double FRACTION_STEP_Y = 1.0 / (HEIGHT - 1);
double fractionX = 0;
double fractionY = 0;
for (int y = 0; y < HEIGHT ; y++) {
for (int x = 0 ; x < WIDTH ; x++) {
PIXEL_WRITER.setColor(x, y, biLinearInterpolateColor(COLOR_00, COLOR_10, COLOR_01, COLOR_11, fractionX, fractionY));
fractionX += FRACTION_STEP_X;
fractionX = fractionX > 1 ? 1 : fractionX;
}
fractionY += FRACTION_STEP_Y;
fractionY = fractionY > 1 ? 1 : fractionY;
fractionX = 0;
}
return RASTER;
}
public ImagePattern apply(final Shape SHAPE) {
double x = SHAPE.getLayoutBounds().getMinX();
double y = SHAPE.getLayoutBounds().getMinY();
double width = SHAPE.getLayoutBounds().getWidth();
double height = SHAPE.getLayoutBounds().getHeight();
return new ImagePattern(getImage(width, height), x, y, width, height, false);
}
}