78e2768897
This reverts commit 7c4cdd2c5b.
BUG=skia:
Review URL: https://codereview.chromium.org/738083002
62 lines
1.6 KiB
C++
62 lines
1.6 KiB
C++
/*
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* Copyright 2014 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkBBHFactory_DEFINED
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#define SkBBHFactory_DEFINED
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#include "SkSize.h"
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#include "SkRect.h"
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class SkBBoxHierarchy;
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class SK_API SkBBHFactory {
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public:
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/**
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* Allocate a new SkBBoxHierarchy. Return NULL on failure.
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*/
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virtual SkBBoxHierarchy* operator()(const SkRect& bounds) const = 0;
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virtual ~SkBBHFactory() {};
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};
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class SK_API SkRTreeFactory : public SkBBHFactory {
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public:
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virtual SkBBoxHierarchy* operator()(const SkRect& bounds) const SK_OVERRIDE;
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private:
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typedef SkBBHFactory INHERITED;
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};
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class SK_API SkTileGridFactory : public SkBBHFactory {
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public:
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struct TileGridInfo {
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/** Tile placement interval */
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SkISize fTileInterval;
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/** Pixel coverage overlap between adjacent tiles */
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SkISize fMargin;
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/** Offset added to device-space bounding box positions to convert
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* them to tile-grid space. This can be used to adjust the "phase"
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* of the tile grid to match probable query rectangles that will be
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* used to search into the tile grid. As long as the offset is smaller
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* or equal to the margin, there is no need to extend the domain of
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* the tile grid to prevent data loss.
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*/
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SkIPoint fOffset;
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};
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SkTileGridFactory(const TileGridInfo& info) : fInfo(info) { }
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virtual SkBBoxHierarchy* operator()(const SkRect& bounds) const SK_OVERRIDE;
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private:
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TileGridInfo fInfo;
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typedef SkBBHFactory INHERITED;
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};
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#endif
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