| /* |
| * Copyright (C) 2006, 2007 Eric Seidel <eric@webkit.org> |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef PathTraversalState_h |
| #define PathTraversalState_h |
| |
| #include "platform/PlatformExport.h" |
| #include "platform/geometry/FloatPoint.h" |
| |
| namespace WebCore { |
| |
| class PLATFORM_EXPORT PathTraversalState { |
| public: |
| enum PathTraversalAction { |
| TraversalTotalLength, |
| TraversalPointAtLength, |
| TraversalSegmentAtLength, |
| TraversalNormalAngleAtLength |
| }; |
| |
| PathTraversalState(PathTraversalAction); |
| |
| float closeSubpath(); |
| float moveTo(const FloatPoint&); |
| float lineTo(const FloatPoint&); |
| float quadraticBezierTo(const FloatPoint& newControl, const FloatPoint& newEnd); |
| float cubicBezierTo(const FloatPoint& newControl1, const FloatPoint& newControl2, const FloatPoint& newEnd); |
| |
| void processSegment(); |
| |
| public: |
| PathTraversalAction m_action; |
| bool m_success; |
| |
| FloatPoint m_current; |
| FloatPoint m_start; |
| FloatPoint m_control1; |
| FloatPoint m_control2; |
| |
| float m_totalLength; |
| unsigned m_segmentIndex; |
| float m_desiredLength; |
| |
| // For normal calculations |
| FloatPoint m_previous; |
| float m_normalAngle; // degrees |
| }; |
| } |
| |
| #endif |