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 public String getTagName() 065 { 066 return TAG_NAME; 067 } 068 069 protected void build() throws SVGException 070 { 071 super.build(); 072 073 StyleAttribute sty = new StyleAttribute(); 074 075 if (getPres(sty.setName("cx"))) 076 { 077 cx = sty.getFloatValueWithUnits(); 078 } 079 080 if (getPres(sty.setName("cy"))) 081 { 082 cy = sty.getFloatValueWithUnits(); 083 } 084 085 if (getPres(sty.setName("r"))) 086 { 087 r = sty.getFloatValueWithUnits(); 088 } 089 090 circle.setFrame(cx - r, cy - r, r * 2f, r * 2f); 091 } 092 093 public void render(Graphics2D g) throws SVGException 094 { 095 beginLayer(g); 096 renderShape(g, circle); 097 finishLayer(g); 098 } 099 100 public Shape getShape() 101 { 102 return shapeToParent(circle); 103 } 104 105 public Rectangle2D getBoundingBox() throws SVGException 106 { 107 return boundsToParent(includeStrokeInBounds(circle.getBounds2D())); 108 } 109 110 /** 111 * Updates all attributes in this diagram associated with a time event. Ie, 112 * all attributes with track information. 113 * 114 * @return - true if this node has changed state as a result of the time 115 * update 116 */ 117 public boolean updateTime(double curTime) throws SVGException 118 { 119// if (trackManager.getNumTracks() == 0) return false; 120 boolean changeState = super.updateTime(curTime); 121 122 //Get current values for parameters 123 StyleAttribute sty = new StyleAttribute(); 124 boolean shapeChange = false; 125 126 if (getPres(sty.setName("cx"))) 127 { 128 float newVal = sty.getFloatValueWithUnits(); 129 if (newVal != cx) 130 { 131 cx = newVal; 132 shapeChange = true; 133 } 134 } 135 136 if (getPres(sty.setName("cy"))) 137 { 138 float newVal = sty.getFloatValueWithUnits(); 139 if (newVal != cy) 140 { 141 cy = newVal; 142 shapeChange = true; 143 } 144 } 145 146 if (getPres(sty.setName("r"))) 147 { 148 float newVal = sty.getFloatValueWithUnits(); 149 if (newVal != r) 150 { 151 r = newVal; 152 shapeChange = true; 153 } 154 } 155 156 if (shapeChange) 157 { 158 build(); 159// circle.setFrame(cx - r, cy - r, r * 2f, r * 2f); 160// return true; 161 } 162 163 return changeState || shapeChange; 164 } 165}