DD::Image::ChannelMap Class Reference

#include <ChannelMap.h>

Public Member Functions
	ChannelMap ()
	make an empty channel map
	ChannelMap (const DD::Image::ChannelSet &channels)
	make a channel map based on a ChannelSet
	operator const ChannelSet & () const
	get a reference to the ChannelSet
bool	contains (DD::Image::Channel z) const
	return whether or not the channel passed in is part of this set
size_t	size () const
	return the number of channels in this map
bool	empty () const
	return whether this ChannelMap is empty
bool	containsAll (const DD::Image::ChannelSet &want) const
	returns true if this ChannelMap contains all of the channels in want
int	chanNo (Channel z) const
bool	operator== (const ChannelMap &chans) const
	compare to another ChannelMap. Returns true if they represent the same channels.
bool	operator== (const ChannelSet &chans) const
	compare to a ChannelSet. Returns true if they represent the same channels.

Detailed Description

Helper class for doing quick lookups of channels within a ChannelSet

Member Function Documentation

chanNo()

int DD::Image::ChannelMap::chanNo ( Channel  z ) const

inline

return the index of the passed in channel within the ChannelMap (e.g. Chan_Green in Mask_RGB is 1), Chan_Alpha in Mask_RGBA is 3

Referenced by DD::Image::DeepPixel::makeSampleOrder(), and DD::Image::DeepLightSample::operator()().