svcore
1.9
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#include <PowerOfSqrtTwoZoomConstraint.h>
Public Types | |
enum | RoundingDirection { RoundDown, RoundUp, RoundNearest } |
Public Member Functions | |
virtual int | getNearestBlockSize (int requestedBlockSize, RoundingDirection dir=RoundNearest) const |
Given the "ideal" block size (frames per pixel) for a given zoom level, return the nearest viable block size for this constraint. | |
virtual int | getNearestBlockSize (int requestedBlockSize, int &type, int &power, RoundingDirection dir=RoundNearest) const |
virtual int | getMinCachePower () const |
virtual int | getMaxZoomLevel () const |
Return the maximum zoom level within range for this constraint. |
Definition at line 21 of file PowerOfSqrtTwoZoomConstraint.h.
enum ZoomConstraint::RoundingDirection [inherited] |
Definition at line 35 of file ZoomConstraint.h.
int PowerOfSqrtTwoZoomConstraint::getNearestBlockSize | ( | int | requestedBlockSize, |
RoundingDirection | = RoundNearest |
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) | const [virtual] |
Given the "ideal" block size (frames per pixel) for a given zoom level, return the nearest viable block size for this constraint.
For example, if a block size of 1523 frames per pixel is requested but the underlying model only supports value summaries at powers-of-two block sizes, return 1024 or 2048 depending on the rounding direction supplied.
Reimplemented from ZoomConstraint.
Definition at line 23 of file PowerOfSqrtTwoZoomConstraint.cpp.
Referenced by WaveFileModel::getSummaries(), and WaveFileModel::getSummaryBlockSize().
int PowerOfSqrtTwoZoomConstraint::getNearestBlockSize | ( | int | requestedBlockSize, |
int & | type, | ||
int & | power, | ||
RoundingDirection | dir = RoundNearest |
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) | const [virtual] |
Definition at line 32 of file PowerOfSqrtTwoZoomConstraint.cpp.
References ZoomConstraint::getMaxZoomLevel(), getMinCachePower(), ZoomConstraint::RoundDown, ZoomConstraint::RoundNearest, and ZoomConstraint::RoundUp.
virtual int PowerOfSqrtTwoZoomConstraint::getMinCachePower | ( | ) | const [inline, virtual] |
Definition at line 34 of file PowerOfSqrtTwoZoomConstraint.h.
Referenced by getNearestBlockSize(), WaveFileModel::getSummaries(), WaveFileModel::getSummaryBlockSize(), and WaveFileModel::RangeCacheFillThread::run().
virtual int ZoomConstraint::getMaxZoomLevel | ( | ) | const [inline, virtual, inherited] |
Return the maximum zoom level within range for this constraint.
Definition at line 62 of file ZoomConstraint.h.
Referenced by PowerOfTwoZoomConstraint::getNearestBlockSize(), getNearestBlockSize(), and ZoomConstraint::getNearestBlockSize().