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Unified Diff: Source/core/platform/graphics/FloatPolygon.h

Issue 32823017: Move FloatPolygon.* and WindRule.h to Source/platform/ (Closed) Base URL: https://chromium.googlesource.com/chromium/blink.git@master
Patch Set: Export classes/enum for win/mac Created 7 years, 2 months ago
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Index: Source/core/platform/graphics/FloatPolygon.h
diff --git a/Source/core/platform/graphics/FloatPolygon.h b/Source/core/platform/graphics/FloatPolygon.h
deleted file mode 100644
index acf033f042a4ab450ef8b32d6d123acbb0d1678b..0000000000000000000000000000000000000000
--- a/Source/core/platform/graphics/FloatPolygon.h
+++ /dev/null
@@ -1,153 +0,0 @@
-/*
- * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved.
- *
- * 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 THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "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 THE
- * COPYRIGHT HOLDER 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 FloatPolygon_h
-#define FloatPolygon_h
-
-#include "core/platform/graphics/WindRule.h"
-#include "platform/PODIntervalTree.h"
-#include "platform/geometry/FloatPoint.h"
-#include "platform/geometry/FloatRect.h"
-#include "wtf/OwnPtr.h"
-#include "wtf/PassOwnPtr.h"
-#include "wtf/Vector.h"
-
-namespace WebCore {
-
-class FloatPolygonEdge;
-
-// This class is used by PODIntervalTree for debugging.
-#ifndef NDEBUG
-template <class> struct ValueToString;
-#endif
-
-class FloatPolygon {
-public:
- FloatPolygon(PassOwnPtr<Vector<FloatPoint> > vertices, WindRule fillRule);
-
- const FloatPoint& vertexAt(unsigned index) const { return (*m_vertices)[index]; }
- unsigned numberOfVertices() const { return m_vertices->size(); }
-
- WindRule fillRule() const { return m_fillRule; }
-
- const FloatPolygonEdge& edgeAt(unsigned index) const { return m_edges[index]; }
- unsigned numberOfEdges() const { return m_edges.size(); }
-
- FloatRect boundingBox() const { return m_boundingBox; }
- bool overlappingEdges(float minY, float maxY, Vector<const FloatPolygonEdge*>& result) const;
- bool contains(const FloatPoint&) const;
- bool isEmpty() const { return m_empty; }
-
-private:
- typedef PODInterval<float, FloatPolygonEdge*> EdgeInterval;
- typedef PODIntervalTree<float, FloatPolygonEdge*> EdgeIntervalTree;
-
- bool containsNonZero(const FloatPoint&) const;
- bool containsEvenOdd(const FloatPoint&) const;
-
- OwnPtr<Vector<FloatPoint> > m_vertices;
- WindRule m_fillRule;
- FloatRect m_boundingBox;
- bool m_empty;
- Vector<FloatPolygonEdge> m_edges;
- EdgeIntervalTree m_edgeTree; // Each EdgeIntervalTree node stores minY, maxY, and a ("UserData") pointer to a FloatPolygonEdge.
-
-};
-
-class VertexPair {
-public:
- virtual ~VertexPair() { }
-
- virtual const FloatPoint& vertex1() const = 0;
- virtual const FloatPoint& vertex2() const = 0;
-
- float minX() const { return std::min(vertex1().x(), vertex2().x()); }
- float minY() const { return std::min(vertex1().y(), vertex2().y()); }
- float maxX() const { return std::max(vertex1().x(), vertex2().x()); }
- float maxY() const { return std::max(vertex1().y(), vertex2().y()); }
-
- bool overlapsRect(const FloatRect&) const;
- bool intersection(const VertexPair&, FloatPoint&) const;
-};
-
-class FloatPolygonEdge : public VertexPair {
- friend class FloatPolygon;
-public:
- virtual const FloatPoint& vertex1() const OVERRIDE
- {
- ASSERT(m_polygon);
- return m_polygon->vertexAt(m_vertexIndex1);
- }
-
- virtual const FloatPoint& vertex2() const OVERRIDE
- {
- ASSERT(m_polygon);
- return m_polygon->vertexAt(m_vertexIndex2);
- }
-
- const FloatPolygonEdge& previousEdge() const
- {
- ASSERT(m_polygon && m_polygon->numberOfEdges() > 1);
- return m_polygon->edgeAt((m_edgeIndex + m_polygon->numberOfEdges() - 1) % m_polygon->numberOfEdges());
- }
-
- const FloatPolygonEdge& nextEdge() const
- {
- ASSERT(m_polygon && m_polygon->numberOfEdges() > 1);
- return m_polygon->edgeAt((m_edgeIndex + 1) % m_polygon->numberOfEdges());
- }
-
- const FloatPolygon* polygon() const { return m_polygon; }
- unsigned vertexIndex1() const { return m_vertexIndex1; }
- unsigned vertexIndex2() const { return m_vertexIndex2; }
- unsigned edgeIndex() const { return m_edgeIndex; }
-
-private:
- // Edge vertex index1 is less than index2, except the last edge, where index2 is 0. When a polygon edge
- // is defined by 3 or more colinear vertices, index2 can be the the index of the last colinear vertex.
- unsigned m_vertexIndex1;
- unsigned m_vertexIndex2;
- unsigned m_edgeIndex;
- const FloatPolygon* m_polygon;
-};
-
-// These structures are used by PODIntervalTree for debugging.
-#ifndef NDEBUG
-template <> struct ValueToString<float> {
- static String string(const float value) { return String::number(value); }
-};
-
-template<> struct ValueToString<FloatPolygonEdge*> {
- static String string(const FloatPolygonEdge* edge) { return String::format("%p (%f,%f %f,%f)", edge, edge->vertex1().x(), edge->vertex1().y(), edge->vertex2().x(), edge->vertex2().y()); }
-};
-#endif
-
-} // namespace WebCore
-
-#endif // FloatPolygon_h
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