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.CubicCurve2D; import com.sun.javafx.scene.DirtyBits; import com.sun.javafx.scene.NodeHelper; import com.sun.javafx.scene.shape.CubicCurveHelper; import com.sun.javafx.sg.prism.NGCubicCurve; import com.sun.javafx.sg.prism.NGNode; import javafx.beans.property.DoubleProperty; import javafx.beans.property.DoublePropertyBase; import javafx.scene.Node; import javafx.scene.paint.Paint; /** * <p>The {@code CubiCurve} class defines a cubic Bézier parametric curve segment * in (x,y) coordinate space. Drawing a curve that intersects both the specified * coordinates {@code (startX, startY)} and {@code (endX, enfY)}, using the * specified points {@code (controlX1, controlY1)} and {@code (controlX2, controlY2)} * as Bézier control points. * Example:</p> * <PRE> import javafx.scene.shape.*; CubicCurve cubic = new CubicCurve(); cubic.setStartX(0.0f); cubic.setStartY(50.0f); cubic.setControlX1(25.0f); cubic.setControlY1(0.0f); cubic.setControlX2(75.0f); cubic.setControlY2(100.0f); cubic.setEndX(100.0f); cubic.setEndY(50.0f); } </PRE> * @since JavaFX 2.0 */ public class CubicCurve extends Shape { static { CubicCurveHelper.setCubicCurveAccessor(new CubicCurveHelper.CubicCurveAccessor() { @Override public NGNode doCreatePeer(Node node) { return ((CubicCurve) node).doCreatePeer(); } @Override public void doUpdatePeer(Node node) { ((CubicCurve) node).doUpdatePeer(); } @Override public com.sun.javafx.geom.Shape doConfigShape(Shape shape) { return ((CubicCurve) shape).doConfigShape(); } }); } private final CubicCurve2D shape = new CubicCurve2D(); /** * Defines the X coordinate of the start point of the cubic curve segment. * * @defaultValue 0.0 */ private DoubleProperty startX; { // To initialize the class helper at the begining each constructor of this class CubicCurveHelper.initHelper(this); } /** * Creates an empty instance of CubicCurve. */ public CubicCurve() { } /** * Creates a new instance of CubicCurve. * @param startX the X coordinate of the start point * @param startY the Y coordinate of the start point * @param controlX1 the X coordinate of the first control point * @param controlY1 the Y coordinate of the first control point * @param controlX2 the X coordinate of the second control point * @param controlY2 the Y coordinate of the second control point * @param endX the X coordinate of the end point * @param endY the Y coordinate of the end point * @since JavaFX 2.1 */ public CubicCurve(double startX, double startY, double controlX1, double controlY1, double controlX2, double controlY2, double endX, double endY) { setStartX(startX); setStartY(startY); setControlX1(controlX1); setControlY1(controlY1); setControlX2(controlX2); setControlY2(controlY2); setEndX(endX); setEndY(endY); } public final void setStartX(double value) { if (startX != null || value != 0.0) { startXProperty().set(value); } } public final double getStartX() { return startX == null ? 0.0 : startX.get(); } public final DoubleProperty startXProperty() { if (startX == null) { startX = new DoublePropertyBase() { @Override public void invalidated() { NodeHelper.markDirty(CubicCurve.this, DirtyBits.NODE_GEOMETRY); NodeHelper.geomChanged(CubicCurve.this); } @Override public Object getBean() { return CubicCurve.this; } @Override public String getName() { return "startX"; } }; } return startX; } /** * Defines the Y coordinate of the start point of the cubic curve segment. * * @defaultValue 0.0 */ private DoubleProperty startY; public final void setStartY(double value) { if (startY != null || value != 0.0) { startYProperty().set(value); } } public final double getStartY() { return startY == null ? 0.0 : startY.get(); } public final DoubleProperty startYProperty() { if (startY == null) { startY = new DoublePropertyBase() { @Override public void invalidated() { NodeHelper.markDirty(CubicCurve.this, DirtyBits.NODE_GEOMETRY); NodeHelper.geomChanged(CubicCurve.this); } @Override public Object getBean() { return CubicCurve.this; } @Override public String getName() { return "startY"; } }; } return startY; } /** * Defines the X coordinate of the first control point * of the cubic curve segment. * * @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() { NodeHelper.markDirty(CubicCurve.this, DirtyBits.NODE_GEOMETRY); NodeHelper.geomChanged(CubicCurve.this); } @Override public Object getBean() { return CubicCurve.this; } @Override public String getName() { return "controlX1"; } }; } return controlX1; } /** * Defines the Y coordinate of the first control point * of the cubic curve segment. * * @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() { NodeHelper.markDirty(CubicCurve.this, DirtyBits.NODE_GEOMETRY); NodeHelper.geomChanged(CubicCurve.this); } @Override public Object getBean() { return CubicCurve.this; } @Override public String getName() { return "controlY1"; } }; } return controlY1; } /** * Defines the X coordinate of the second control point * of the cubic curve segment. * * @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() { NodeHelper.markDirty(CubicCurve.this, DirtyBits.NODE_GEOMETRY); NodeHelper.geomChanged(CubicCurve.this); } @Override public Object getBean() { return CubicCurve.this; } @Override public String getName() { return "controlX2"; } }; } return controlX2; } /** * Defines the Y coordinate of the second control point * of the cubic curve segment. * * @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() { NodeHelper.markDirty(CubicCurve.this, DirtyBits.NODE_GEOMETRY); NodeHelper.geomChanged(CubicCurve.this); } @Override public Object getBean() { return CubicCurve.this; } @Override public String getName() { return "controlY2"; } }; } return controlY2; } /** * Defines the X coordinate of the end point of the cubic curve segment. * * @defaultValue 0.0 */ private DoubleProperty endX; public final void setEndX(double value) { if (endX != null || value != 0.0) { endXProperty().set(value); } } public final double getEndX() { return endX == null ? 0.0 : endX.get(); } public final DoubleProperty endXProperty() { if (endX == null) { endX = new DoublePropertyBase() { @Override public void invalidated() { NodeHelper.markDirty(CubicCurve.this, DirtyBits.NODE_GEOMETRY); NodeHelper.geomChanged(CubicCurve.this); } @Override public Object getBean() { return CubicCurve.this; } @Override public String getName() { return "endX"; } }; } return endX; } /** * Defines the Y coordinate of the end point of the cubic curve segment. * * @defaultValue 0.0 */ private DoubleProperty endY; public final void setEndY(double value) { if (endY != null || value != 0.0) { endYProperty().set(value); } } public final double getEndY() { return endY == null ? 0.0 : endY.get(); } public final DoubleProperty endYProperty() { if (endY == null) { endY = new DoublePropertyBase() { @Override public void invalidated() { NodeHelper.markDirty(CubicCurve.this, DirtyBits.NODE_GEOMETRY); NodeHelper.geomChanged(CubicCurve.this); } @Override public Object getBean() { return CubicCurve.this; } @Override public String getName() { return "endY"; } }; } return endY; } /* * Note: This method MUST only be called via its accessor method. */ private CubicCurve2D doConfigShape() { shape.x1 = (float) getStartX(); shape.y1 = (float) getStartY(); shape.ctrlx1 = (float) getControlX1(); shape.ctrly1 = (float) getControlY1(); shape.ctrlx2 = (float) getControlX2(); shape.ctrly2 = (float) getControlY2(); shape.x2 = (float) getEndX(); shape.y2 = (float) getEndY(); return shape; } /* * Note: This method MUST only be called via its accessor method. */ private NGNode doCreatePeer() { return new NGCubicCurve(); } /* * Note: This method MUST only be called via its accessor method. */ private void doUpdatePeer() { if (NodeHelper.isDirty(this, DirtyBits.NODE_GEOMETRY)) { final NGCubicCurve peer = NodeHelper.getPeer(this); peer.updateCubicCurve((float) getStartX(), (float) getStartY(), (float) getEndX(), (float) getEndY(), (float) getControlX1(), (float) getControlY1(), (float) getControlX2(), (float) getControlY2()); } } /** * Returns a string representation of this {@code CubicCurve} object. * @return a string representation of this {@code CubicCurve} object. */ @Override public String toString() { final StringBuilder sb = new StringBuilder("CubicCurve["); String id = getId(); if (id != null) { sb.append("id=").append(id).append(", "); } sb.append("startX=").append(getStartX()); sb.append(", startY=").append(getStartY()); sb.append(", controlX1=").append(getControlX1()); sb.append(", controlY1=").append(getControlY1()); sb.append(", controlX2=").append(getControlX2()); sb.append(", controlY2=").append(getControlY2()); sb.append(", endX=").append(getEndX()); sb.append(", endY=").append(getEndY()); sb.append(", fill=").append(getFill()); Paint stroke = getStroke(); if (stroke != null) { sb.append(", stroke=").append(stroke); sb.append(", strokeWidth=").append(getStrokeWidth()); } return sb.append("]").toString(); } }