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/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrRectanizer_skyline_DEFINED
#define GrRectanizer_skyline_DEFINED
#include "GrRectanizer.h"
#include "SkTDArray.h"
// Pack rectangles and track the current silhouette
// Based, in part, on Jukka Jylanki's work at http://clb.demon.fi
class GrRectanizerSkyline : public GrRectanizer {
public:
GrRectanizerSkyline(int w, int h) : INHERITED(w, h) {
this->reset();
}
virtual ~GrRectanizerSkyline() { }
virtual void reset() SK_OVERRIDE{
fAreaSoFar = 0;
fSkyline.reset();
SkylineSegment* seg = fSkyline.append(1);
seg->fX = 0;
seg->fY = 0;
seg->fWidth = this->width();
}
virtual bool addRect(int w, int h, GrIPoint16* loc) SK_OVERRIDE;
virtual float percentFull() const SK_OVERRIDE{
return fAreaSoFar / ((float)this->width() * this->height());
}
private:
struct SkylineSegment {
int fX;
int fY;
int fWidth;
};
SkTDArray<SkylineSegment> fSkyline;
int32_t fAreaSoFar;
bool rectangleFits(int skylineIndex, int width, int height, int* y) const;
void addSkylineLevel(int skylineIndex, int x, int y, int width, int height);
typedef GrRectanizer INHERITED;
};
#endif
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