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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkBBoxHierarchy_DEFINED
#define SkBBoxHierarchy_DEFINED
#include "SkRect.h"
#include "SkRefCnt.h"
#include "SkTDArray.h"
#include "SkTemplates.h"
/**
* Interface for a spatial data structure that stores axis-aligned bounding
* boxes and allows efficient retrieval of intersections with query rectangles.
*/
class SkBBoxHierarchy : public SkRefCnt {
public:
SkBBoxHierarchy() {}
virtual ~SkBBoxHierarchy() {}
/**
* Insert N bounding boxes into the hierarchy.
* The SkBBoxHierarchy may take ownership of boundsArray by calling detach().
*/
virtual void insert(SkAutoTMalloc<SkRect>* boundsArray, int N) = 0;
/**
* Populate results with the indices of bounding boxes interesecting that query.
*/
virtual void search(const SkRect& query, SkTDArray<unsigned>* results) const = 0;
virtual size_t bytesUsed() const = 0;
SK_DECLARE_INST_COUNT(SkBBoxHierarchy)
private:
typedef SkRefCnt INHERITED;
};
#endif
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