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/*
 * 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
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 */

package javafx.scene.shape;


import com.sun.javafx.geom.Path2D;
import com.sun.javafx.scene.shape.QuadCurveToHelper;
import com.sun.javafx.sg.prism.NGPath;
import javafx.beans.property.DoubleProperty;
import javafx.beans.property.DoublePropertyBase;


/**
 * Creates a curved path element, defined by two new points,
 * by drawing a Quadratic Bézier curve that intersects both the current coordinates
 * and the specified coordinates {@code (x, y)},
 * using the specified point {@code (controlX, controlY)}
 * as a Bézier control point.
 * All coordinates are specified in double precision.
 *
 * 

For more information on path elements see the {@link Path} and * {@link PathElement} classes. * *

Example: *

import javafx.scene.shape.*;

Path path = new Path();

MoveTo moveTo = new MoveTo();
moveTo.setX(0.0f);
moveTo.setY(50.0f);

QuadCurveTo quadTo = new QuadCurveTo();
quadTo.setControlX(25.0f);
quadTo.setControlY(0.0f);
quadTo.setX(50.0f);
quadTo.setY(50.0f);

path.getElements().add(moveTo);
path.getElements().add(cubicTo);
* @since JavaFX 2.0 */ public class QuadCurveTo extends PathElement { static { QuadCurveToHelper.setQuadCurveToAccessor(new QuadCurveToHelper.QuadCurveToAccessor() { @Override public void doAddTo(PathElement pathElement, Path2D path) { ((QuadCurveTo) pathElement).doAddTo(path); } }); } /** * Creates an empty instance of QuadCurveTo. */ public QuadCurveTo() { QuadCurveToHelper.initHelper(this); } /** * Creates a new instance of QuadCurveTo. * @param controlX the X coordinate of the quadratic control point * @param controlY the Y coordinate of the quadratic control point * @param x the X coordinate of the final end point * @param y the Y coordinate of the final end point */ public QuadCurveTo(double controlX, double controlY, double x, double y) { setControlX(controlX); setControlY(controlY); setX(x); setY(y); QuadCurveToHelper.initHelper(this); } /** * Defines the X coordinate of the quadratic control point. * * @defaultValue 0.0 */ private DoubleProperty controlX = new DoublePropertyBase() { @Override public void invalidated() { u(); } @Override public Object getBean() { return QuadCurveTo.this; } @Override public String getName() { return "controlX"; } }; public final void setControlX(double value) { controlX.set(value); } public final double getControlX() { return controlX.get(); } public final DoubleProperty controlXProperty() { return controlX; } /** * Defines the Y coordinate of the quadratic control point. * * @defaultValue 0.0 */ private DoubleProperty controlY = new DoublePropertyBase() { @Override public void invalidated() { u(); } @Override public Object getBean() { return QuadCurveTo.this; } @Override public String getName() { return "controlY"; } }; public final void setControlY(double value) { controlY.set(value); } public final double getControlY() { return controlY.get(); } public final DoubleProperty controlYProperty() { return controlY; } /** * Defines the X coordinate of the final end point. * * @defaultValue 0.0 */ private DoubleProperty x; public final void setX(double value) { if (x != null || value != 0.0) { xProperty().set(value); } } public final double getX() { return x == null ? 0.0 : x.get(); } public final DoubleProperty xProperty() { if (x == null) { x = new DoublePropertyBase() { @Override public void invalidated() { u(); } @Override public Object getBean() { return QuadCurveTo.this; } @Override public String getName() { return "x"; } }; } return x; } /** * Defines the Y coordinate of the final end point. * * @defaultValue 0.0 */ private DoubleProperty y; public final void setY(double value) { if (y != null || value != 0.0) { yProperty().set(value); } } public final double getY() { return y == null ? 0.0 : y.get(); } public final DoubleProperty yProperty() { if (y == null) { y = new DoublePropertyBase() { @Override public void invalidated() { u(); } @Override public Object getBean() { return QuadCurveTo.this; } @Override public String getName() { return "y"; } }; } return y; } @Override void addTo(NGPath pgPath) { if (isAbsolute()) { pgPath.addQuadTo( (float)getControlX(), (float)getControlY(), (float)getX(), (float)getY()); } else { final double dx = pgPath.getCurrentX(); final double dy = pgPath.getCurrentY(); pgPath.addQuadTo( (float)(getControlX()+dx), (float)(getControlY()+dy), (float)(getX()+dx), (float)(getY()+dy)); } } /* * Note: This method MUST only be called via its accessor method. */ private void doAddTo(Path2D path) { if (isAbsolute()) { path.quadTo( (float)getControlX(), (float)getControlY(), (float)getX(), (float)getY()); } else { final double dx = path.getCurrentX(); final double dy = path.getCurrentY(); path.quadTo( (float)(getControlX()+dx), (float)(getControlY()+dy), (float)(getX()+dx), (float)(getY()+dy)); } } /** * Returns a string representation of this {@code CubicCurveTo} object. * @return a string representation of this {@code CubicCurveTo} object. */ @Override public String toString() { final StringBuilder sb = new StringBuilder("CubicCurveTo["); sb.append("x=").append(getX()); sb.append(", y=").append(getY()); sb.append(", controlX=").append(getControlX()); sb.append(", controlY=").append(getControlY()); return sb.append("]").toString(); } }




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