KHTML
PathTraversalState.h
Go to the documentation of this file.00001 /* 00002 * Copyright (C) 2006, 2007 Eric Seidel <eric@webkit.org> 00003 * 00004 * Redistribution and use in source and binary forms, with or without 00005 * modification, are permitted provided that the following conditions 00006 * are met: 00007 * 1. Redistributions of source code must retain the above copyright 00008 * notice, this list of conditions and the following disclaimer. 00009 * 2. Redistributions in binary form must reproduce the above copyright 00010 * notice, this list of conditions and the following disclaimer in the 00011 * documentation and/or other materials provided with the distribution. 00012 * 00013 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 00014 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00015 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 00016 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 00017 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00018 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 00019 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00020 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 00021 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00022 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00023 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00024 */ 00025 00026 #ifndef PathTraversalState_h 00027 #define PathTraversalState_h 00028 00029 #include "FloatPoint.h" 00030 #include <wtf/Vector.h> 00031 00032 namespace WebCore { 00033 00034 class Path; 00035 00036 class PathTraversalState { 00037 public: 00038 enum PathTraversalAction { 00039 TraversalTotalLength, 00040 TraversalPointAtLength, 00041 TraversalSegmentAtLength, 00042 TraversalNormalAngleAtLength 00043 }; 00044 00045 PathTraversalState(PathTraversalAction); 00046 00047 float closeSubpath(); 00048 float moveTo(const FloatPoint&); 00049 float lineTo(const FloatPoint&); 00050 float quadraticBezierTo(const FloatPoint& newControl, const FloatPoint& newEnd); 00051 float cubicBezierTo(const FloatPoint& newControl1, const FloatPoint& newControl2, const FloatPoint& newEnd); 00052 00053 public: 00054 PathTraversalAction m_action; 00055 bool m_success; 00056 00057 FloatPoint m_current; 00058 FloatPoint m_start; 00059 FloatPoint m_control1; 00060 FloatPoint m_control2; 00061 00062 float m_totalLength; 00063 unsigned m_segmentIndex; 00064 float m_desiredLength; 00065 00066 // For normal calculations 00067 FloatPoint m_previous; 00068 float m_normalAngle; // degrees 00069 }; 00070 } 00071 00072 #endif