LogRange Class Reference

#include <LogRange.h>

List of all members.

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Detailed Description

Definition at line 19 of file LogRange.h.

Static Public Member Functions
static void	mapRange (float &min, float &max, float thresh=-10)
	Map a linear range onto a logarithmic range.
static float	map (float value, float thresh=-10)
	Map a value onto a logarithmic range.
static float	unmap (float value)
	Map a value from the logarithmic range back again.

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Member Function Documentation

void LogRange::mapRange	(	float &	min,
		float &	max,
		float	thresh = -10
	)			[static]

Map a linear range onto a logarithmic range.

min and max are passed as the extents of the linear range and returned as the extents of the logarithmic range. thresh is the minimum value for the log range, to be used if the linear range spans zero.

Definition at line 22 of file LogRange.cpp.

Referenced by Colour3DPlotLayer::fillCache(), TimeValueLayer::getColourForValue(), TimeValueLayer::getScaleExtents(), and NoteLayer::getScaleExtents().

float LogRange::map	(	float	value,
		float	thresh = -10
	)			[static]

Map a value onto a logarithmic range.

This just means taking the base-10 log of the absolute value, or using the threshold value if the absolute value is zero.

Definition at line 55 of file LogRange.cpp.

Referenced by Colour3DPlotLayer::fillCache(), TimeValueLayer::getColourForValue(), TimeValueLayer::getYForValue(), and NoteLayer::getYForValue().

float LogRange::unmap

(

float

value

)

[static]

Map a value from the logarithmic range back again.

This just means taking the value'th power of ten.

Definition at line 62 of file LogRange.cpp.

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The documentation for this class was generated from the following files:

• LogRange.h
• LogRange.cpp

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