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.sg.prism.NGPath; import javafx.beans.property.DoubleProperty; import javafx.beans.property.DoublePropertyBase; /** * Creates a curved path element, defined by three new points, * by drawing a Cubic Bézier curve that intersects both the current coordinates * and the specified coordinates {@code (x,y)}, using the * specified points {@code (controlX1,controlY1)} and {@code (controlX2,controlY2)} * as Bézier control points. All coordinates are specified in double precision. * * <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(); MoveTo moveTo = new MoveTo(); moveTo.setX(0.0f); moveTo.setY(0.0f); CubicCurveTo cubicTo = new CubicCurveTo(); cubicTo.setControlX1(0.0f); cubicTo.setControlY1(0.0f); cubicTo.setControlX2(100.0f); cubicTo.setControlY2(100.0f); cubicTo.setX(100.0f); cubicTo.setY(50.0f); path.getElements().add(moveTo); path.getElements().add(cubicTo); </PRE> * @since JavaFX 2.0 */ public class CubicCurveTo extends PathElement { static { CubicCurveToHelper.setCubicCurveToAccessor(new CubicCurveToHelper.CubicCurveToAccessor() { @Override public void doAddTo(PathElement pathElement, Path2D path) { ((CubicCurveTo) pathElement).doAddTo(path); } }); } /** * Creates an empty instance of CubicCurveTo. */ public CubicCurveTo() { CubicCurveToHelper.initHelper(this); } /** * Creates a new instance of CubicCurveTo. * @param controlX1 the X coordinate of the first Bézier control point * @param controlY1 the Y coordinate of the first Bézier control point * @param controlX2 the X coordinate of the second Bézier control point * @param controlY2 the Y coordinate of the second Bézier control point * @param x the X coordinate of the final end point * @param y the Y coordinate of the final end point */ public CubicCurveTo(double controlX1, double controlY1, double controlX2, double controlY2, double x, double y) { setControlX1(controlX1); setControlY1(controlY1); setControlX2(controlX2); setControlY2(controlY2); setX(x); setY(y); CubicCurveToHelper.initHelper(this); } /** * Defines the X coordinate of the first Bézier control point. * * @defaultValue 0.0 */ private DoubleProperty controlX1; public final void setControlX1(double value) { if (controlX1 != null || value != 0.0) { controlX1Property().set(value); } } public final double getControlX1() { return controlX1 == null ? 0.0 : controlX1.get(); } public final DoubleProperty controlX1Property() { if (controlX1 == null) { controlX1 = new DoublePropertyBase() { @Override public void invalidated() { u(); } @Override public Object getBean() { return CubicCurveTo.this; } @Override public String getName() { return "controlX1"; } }; } return controlX1; } /** * Defines the Y coordinate of the first Bézier control point. * * @defaultValue 0.0 */ private DoubleProperty controlY1; public final void setControlY1(double value) { if (controlY1 != null || value != 0.0) { controlY1Property().set(value); } } public final double getControlY1() { return controlY1 == null ? 0.0 : controlY1.get(); } public final DoubleProperty controlY1Property() { if (controlY1 == null) { controlY1 = new DoublePropertyBase() { @Override public void invalidated() { u(); } @Override public Object getBean() { return CubicCurveTo.this; } @Override public String getName() { return "controlY1"; } }; } return controlY1; } /** * Defines the X coordinate of the second Bézier control point. * * @defaultValue 0.0 */ private DoubleProperty controlX2; public final void setControlX2(double value) { if (controlX2 != null || value != 0.0) { controlX2Property().set(value); } } public final double getControlX2() { return controlX2 == null ? 0.0 : controlX2.get(); } public final DoubleProperty controlX2Property() { if (controlX2 == null) { controlX2 = new DoublePropertyBase() { @Override public void invalidated() { u(); } @Override public Object getBean() { return CubicCurveTo.this; } @Override public String getName() { return "controlX2"; } }; } return controlX2; } /** * Defines the Y coordinate of the second Bézier control point. * * @defaultValue 0.0 */ private DoubleProperty controlY2; public final void setControlY2(double value) { if (controlY2 != null || value != 0.0) { controlY2Property().set(value); } } public final double getControlY2() { return controlY2 == null ? 0.0 : controlY2.get(); } public final DoubleProperty controlY2Property() { if (controlY2 == null) { controlY2 = new DoublePropertyBase() { @Override public void invalidated() { u(); } @Override public Object getBean() { return CubicCurveTo.this; } @Override public String getName() { return "controlY2"; } }; } return controlY2; } /** * 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 CubicCurveTo.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 CubicCurveTo.this; } @Override public String getName() { return "y"; } }; } return y; } /** * Adds the curved path element to the specified path. */ @Override void addTo(NGPath pgPath) { if (isAbsolute()) { pgPath.addCubicTo((float) getControlX1(), (float) getControlY1(), (float) getControlX2(), (float) getControlY2(), (float) getX(), (float) getY()); } else { final double dx = pgPath.getCurrentX(); final double dy = pgPath.getCurrentY(); pgPath.addCubicTo((float) (getControlX1() + dx), (float) (getControlY1() + dy), (float) (getControlX2() + dx), (float) (getControlY2() + 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.curveTo((float) getControlX1(), (float) getControlY1(), (float) getControlX2(), (float) getControlY2(), (float) getX(), (float) getY()); } else { final double dx = path.getCurrentX(); final double dy = path.getCurrentY(); path.curveTo((float) (getControlX1() + dx), (float) (getControlY1() + dy), (float) (getControlX2() + dx), (float) (getControlY2() + 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(", controlX1=").append(getControlX1()); sb.append(", controlY1=").append(getControlY1()); sb.append(", controlX2=").append(getControlX2()); sb.append(", controlY2=").append(getControlY2()); return sb.append("]").toString(); } }