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.shape; import com.sun.javafx.geom.Path2D; import com.sun.javafx.scene.shape.CubicCurveToHelper; import com.sun.javafx.scene.shape.LineToHelper; import com.sun.javafx.sg.prism.NGPath; import javafx.beans.property.DoubleProperty; import javafx.beans.property.DoublePropertyBase; /** * Creates a line path element by drawing a straight line * from the current coordinate to the new coordinates. * * <p>For more information on path elements see the {@link Path} and * {@link PathElement} classes. * * <p>Example: * <PRE> import javafx.scene.shape.*; Path path = new Path(); path.getElements().add(new MoveTo(0.0f, 50.0f)); path.getElements().add(new LineTo(100.0f, 100.0f)); </PRE> * @since JavaFX 2.0 */ public class LineTo extends PathElement { static { LineToHelper.setLineToAccessor(new LineToHelper.LineToAccessor() { @Override public void doAddTo(PathElement pathElement, Path2D path) { ((LineTo) pathElement).doAddTo(path); } }); } /** * Creates an empty instance of LineTo. */ public LineTo() { LineToHelper.initHelper(this); } /** * Creates a new isntance of LineTo. * @param x the horizontal coordinate of the line end point * @param y the vertical coordinate of the line end point */ public LineTo(double x, double y) { setX(x); setY(y); LineToHelper.initHelper(this); } /** * Defines the X coordinate. * * @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 LineTo.this; } @Override public String getName() { return "x"; } }; } return x; } /** * Defines the Y coordinate. * * @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 LineTo.this; } @Override public String getName() { return "y"; } }; } return y; } @Override void addTo(NGPath pgPath) { if (isAbsolute()) { pgPath.addLineTo((float) getX(), (float) getY()); } else { pgPath.addLineTo((float) (pgPath.getCurrentX() + getX()), (float) (pgPath.getCurrentY() + getY())); } } /* * Note: This method MUST only be called via its accessor method. */ private void doAddTo(Path2D path) { if (isAbsolute()) { path.lineTo((float) getX(), (float) getY()); } else { path.lineTo((float) (path.getCurrentX() + getX()), (float) (path.getCurrentY() + getY())); } } /** * Returns a string representation of this {@code LineTo} object. * @return a string representation of this {@code LineTo} object. */ @Override public String toString() { final StringBuilder sb = new StringBuilder("LineTo["); sb.append("x=").append(getX()); sb.append(", y=").append(getY()); return sb.append("]").toString(); } }