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