1 /* 2 * Copyright (C) 2006, 2007 Eric Seidel <eric@webkit.org> 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef PathTraversalState_h 27 #define PathTraversalState_h 28 29 #include "FloatPoint.h" 30 #include <wtf/Vector.h> 31 32 namespace WebCore { 33 34 class Path; 35 36 class PathTraversalState { 37 public: 38 enum PathTraversalAction { 39 TraversalTotalLength, 40 TraversalPointAtLength, 41 TraversalSegmentAtLength, 42 TraversalNormalAngleAtLength 43 }; 44 45 PathTraversalState(PathTraversalAction); 46 47 float closeSubpath(); 48 float moveTo(const FloatPoint&); 49 float lineTo(const FloatPoint&); 50 float quadraticBezierTo(const FloatPoint& newControl, const FloatPoint& newEnd); 51 float cubicBezierTo(const FloatPoint& newControl1, const FloatPoint& newControl2, const FloatPoint& newEnd); 52 53 public: 54 PathTraversalAction m_action; 55 bool m_success; 56 57 FloatPoint m_current; 58 FloatPoint m_start; 59 FloatPoint m_control1; 60 FloatPoint m_control2; 61 62 float m_totalLength; 63 unsigned m_segmentIndex; 64 float m_desiredLength; 65 66 // For normal calculations 67 FloatPoint m_previous; 68 float m_normalAngle; // degrees 69 }; 70 } 71 72 #endif 73