Java tutorial
/* * Copyright (c) 2010, 2016, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javafx.scene.effect; import javafx.beans.property.BooleanProperty; import javafx.beans.property.IntegerProperty; import javafx.beans.property.IntegerPropertyBase; import javafx.beans.property.SimpleBooleanProperty; import com.sun.javafx.util.Utils; /** * A buffer that contains floating point data, intended for use as a parameter * to effects such as {@link DisplacementMap}. * @since JavaFX 2.0 */ public class FloatMap { private com.sun.scenario.effect.FloatMap map; private float[] buf; private boolean mapBufferDirty = true; com.sun.scenario.effect.FloatMap getImpl() { return map; } private void updateBuffer() { if (getWidth() > 0 && getHeight() > 0) { int w = Utils.clampMax(getWidth(), 4096); int h = Utils.clampMax(getHeight(), 4096); int size = w * h * 4; buf = new float[size]; mapBufferDirty = true; } } private void update() { if (mapBufferDirty) { map = new com.sun.scenario.effect.FloatMap(Utils.clamp(1, getWidth(), 4096), Utils.clamp(1, getHeight(), 4096)); mapBufferDirty = false; } map.put(buf); } void sync() { if (isEffectDirty()) { update(); clearDirty(); } } private BooleanProperty effectDirty; private void setEffectDirty(boolean value) { effectDirtyProperty().set(value); } final BooleanProperty effectDirtyProperty() { if (effectDirty == null) { effectDirty = new SimpleBooleanProperty(this, "effectDirty"); } return effectDirty; } boolean isEffectDirty() { return effectDirty == null ? false : effectDirty.get(); } private void markDirty() { setEffectDirty(true); } private void clearDirty() { setEffectDirty(false); } /** * Creates a new instance of FloatMap with default parameters. */ public FloatMap() { updateBuffer(); markDirty(); } /** * Creates a new instance of FloatMap with the specified width and height. * @param width the width of the map, in pixels * @param height the height of the map, in pixels * @since JavaFX 2.1 */ public FloatMap(int width, int height) { setWidth(width); setHeight(height); updateBuffer(); markDirty(); } /** * The width of the map, in pixels. * <pre> * Min: 1 * Max: 4096 * Default: 1 * Identity: n/a * </pre> * @defaultValue 1 */ private IntegerProperty width; public final void setWidth(int value) { widthProperty().set(value); } public final int getWidth() { return width == null ? 1 : width.get(); } public final IntegerProperty widthProperty() { if (width == null) { width = new IntegerPropertyBase(1) { @Override public void invalidated() { updateBuffer(); markDirty(); } @Override public Object getBean() { return FloatMap.this; } @Override public String getName() { return "width"; } }; } return width; } /** * The height of the map, in pixels. * <pre> * Min: 1 * Max: 4096 * Default: 1 * Identity: n/a * </pre> * @defaultValue 1 */ private IntegerProperty height; public final void setHeight(int value) { heightProperty().set(value); } public final int getHeight() { return height == null ? 1 : height.get(); } public final IntegerProperty heightProperty() { if (height == null) { height = new IntegerPropertyBase(1) { @Override public void invalidated() { updateBuffer(); markDirty(); } @Override public Object getBean() { return FloatMap.this; } @Override public String getName() { return "height"; } }; } return height; } /** * Sets the sample for a specific band at the given (x,y) location. * * @param x the x location * @param y the y location * @param band the band to set (must be 0, 1, 2, or 3) * @param s the sample value to set */ public void setSample(int x, int y, int band, float s) { buf[((x + (y * getWidth())) * 4) + band] = s; markDirty(); } /** * Sets the sample for the first band at the given (x,y) location. * * @param x the x location * @param y the y location * @param s0 the sample value to set for the first band */ public void setSamples(int x, int y, float s0) { int index = (x + (y * getWidth())) * 4; buf[index + 0] = s0; markDirty(); } /** * Sets the sample for the first two bands at the given (x,y) location. * * @param x the x location * @param y the y location * @param s0 the sample value to set for the first band * @param s1 the sample value to set for the second band */ public void setSamples(int x, int y, float s0, float s1) { int index = (x + (y * getWidth())) * 4; buf[index + 0] = s0; buf[index + 1] = s1; markDirty(); } /** * Sets the sample for the first three bands at the given (x,y) location. * * @param x the x location * @param y the y location * @param s0 the sample value to set for the first band * @param s1 the sample value to set for the second band * @param s2 the sample value to set for the third band */ public void setSamples(int x, int y, float s0, float s1, float s2) { int index = (x + (y * getWidth())) * 4; buf[index + 0] = s0; buf[index + 1] = s1; buf[index + 2] = s2; markDirty(); } /** * Sets the sample for each of the four bands at the given (x,y) location. * * @param x the x location * @param y the y location * @param s0 the sample value to set for the first band * @param s1 the sample value to set for the second band * @param s2 the sample value to set for the third band * @param s3 the sample value to set for the fourth band */ public void setSamples(int x, int y, float s0, float s1, float s2, float s3) { int index = (x + (y * getWidth())) * 4; buf[index + 0] = s0; buf[index + 1] = s1; buf[index + 2] = s2; buf[index + 3] = s3; markDirty(); } FloatMap copy() { FloatMap dest = new FloatMap(this.getWidth(), this.getHeight()); System.arraycopy(buf, 0, dest.buf, 0, buf.length); return dest; } }