001/* 002 * SVG Salamander 003 * Copyright (c) 2004, Mark McKay 004 * All rights reserved. 005 * 006 * Redistribution and use in source and binary forms, with or 007 * without modification, are permitted provided that the following 008 * conditions are met: 009 * 010 * - Redistributions of source code must retain the above 011 * copyright notice, this list of conditions and the following 012 * disclaimer. 013 * - Redistributions in binary form must reproduce the above 014 * copyright notice, this list of conditions and the following 015 * disclaimer in the documentation and/or other materials 016 * provided with the distribution. 017 * 018 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 019 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 020 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 021 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 022 * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 023 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 024 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 025 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 026 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 027 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 028 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 029 * OF THE POSSIBILITY OF SUCH DAMAGE. 030 * 031 * Mark McKay can be contacted at mark@kitfox.com. Salamander and other 032 * projects can be found at http://www.kitfox.com 033 * 034 * Created on January 26, 2004, 5:25 PM 035 */ 036package com.kitfox.svg; 037 038import com.kitfox.svg.xml.StyleAttribute; 039import java.awt.Graphics2D; 040import java.awt.Shape; 041import java.awt.geom.Ellipse2D; 042import java.awt.geom.Rectangle2D; 043 044/** 045 * @author Mark McKay 046 * @author <a href="mailto:mark@kitfox.com">Mark McKay</a> 047 */ 048public class Circle extends ShapeElement 049{ 050 051 public static final String TAG_NAME = "circle"; 052 float cx = 0f; 053 float cy = 0f; 054 float r = 0f; 055 Ellipse2D.Float circle = new Ellipse2D.Float(); 056 057 /** 058 * Creates a new instance of Rect 059 */ 060 public Circle() 061 { 062 } 063 064 @Override 065 public String getTagName() 066 { 067 return TAG_NAME; 068 } 069 070 @Override 071 protected void build() throws SVGException 072 { 073 super.build(); 074 075 StyleAttribute sty = new StyleAttribute(); 076 077 if (getPres(sty.setName("cx"))) 078 { 079 cx = sty.getFloatValueWithUnits(); 080 } 081 082 if (getPres(sty.setName("cy"))) 083 { 084 cy = sty.getFloatValueWithUnits(); 085 } 086 087 if (getPres(sty.setName("r"))) 088 { 089 r = sty.getFloatValueWithUnits(); 090 } 091 092 circle.setFrame(cx - r, cy - r, r * 2f, r * 2f); 093 } 094 095 @Override 096 public void render(Graphics2D g) throws SVGException 097 { 098 beginLayer(g); 099 renderShape(g, circle); 100 finishLayer(g); 101 } 102 103 @Override 104 public Shape getShape() 105 { 106 return shapeToParent(circle); 107 } 108 109 @Override 110 public Rectangle2D getBoundingBox() throws SVGException 111 { 112 return boundsToParent(includeStrokeInBounds(circle.getBounds2D())); 113 } 114 115 /** 116 * Updates all attributes in this diagram associated with a time event. Ie, 117 * all attributes with track information. 118 * 119 * @return - true if this node has changed state as a result of the time 120 * update 121 */ 122 @Override 123 public boolean updateTime(double curTime) throws SVGException 124 { 125// if (trackManager.getNumTracks() == 0) return false; 126 boolean changeState = super.updateTime(curTime); 127 128 //Get current values for parameters 129 StyleAttribute sty = new StyleAttribute(); 130 boolean shapeChange = false; 131 132 if (getPres(sty.setName("cx"))) 133 { 134 float newVal = sty.getFloatValueWithUnits(); 135 if (newVal != cx) 136 { 137 cx = newVal; 138 shapeChange = true; 139 } 140 } 141 142 if (getPres(sty.setName("cy"))) 143 { 144 float newVal = sty.getFloatValueWithUnits(); 145 if (newVal != cy) 146 { 147 cy = newVal; 148 shapeChange = true; 149 } 150 } 151 152 if (getPres(sty.setName("r"))) 153 { 154 float newVal = sty.getFloatValueWithUnits(); 155 if (newVal != r) 156 { 157 r = newVal; 158 shapeChange = true; 159 } 160 } 161 162 if (shapeChange) 163 { 164 build(); 165// circle.setFrame(cx - r, cy - r, r * 2f, r * 2f); 166// return true; 167 } 168 169 return changeState || shapeChange; 170 } 171}