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, 8:40 PM 035 */ 036 037package com.kitfox.svg.pathcmd; 038 039//import org.apache.batik.ext.awt.geom.ExtendedGeneralPath; 040import java.awt.geom.*; 041 042/** 043 * @author Mark McKay 044 * @author <a href="mailto:mark@kitfox.com">Mark McKay</a> 045 */ 046public class QuadraticSmooth extends PathCommand { 047 048 public float x = 0f; 049 public float y = 0f; 050 051 /** Creates a new instance of MoveTo */ 052 public QuadraticSmooth() { 053 } 054 055 @Override 056 public String toString() 057 { 058 return "T " + x + " " + y; 059 } 060 061 public QuadraticSmooth(boolean isRelative, float x, float y) { 062 super(isRelative); 063 this.x = x; 064 this.y = y; 065 } 066 067// public void appendPath(ExtendedGeneralPath path, BuildHistory hist) 068 @Override 069 public void appendPath(GeneralPath path, BuildHistory hist) 070 { 071 float offx = isRelative ? hist.lastPoint.x : 0f; 072 float offy = isRelative ? hist.lastPoint.y : 0f; 073 074 float oldKx = hist.lastKnot.x; 075 float oldKy = hist.lastKnot.y; 076 float oldX = hist.lastPoint.x; 077 float oldY = hist.lastPoint.y; 078 //Calc knot as reflection of old knot 079 float kx = oldX * 2f - oldKx; 080 float ky = oldY * 2f - oldKy; 081 082 path.quadTo(kx, ky, x + offx, y + offy); 083 hist.setLastPoint(x + offx, y + offy); 084 hist.setLastKnot(kx, ky); 085 } 086 087 @Override 088 public int getNumKnotsAdded() 089 { 090 return 4; 091 } 092}