Inherits DD::Image::ProxyContext.

Public Types
enum	LineReadPreference { eScanlineAlways, ePreferScanline, ePreferAllLines }

typedef ProxyContext::ProxySetting	ProxySetting

Public Types inherited from DD::Image::ProxyContext
enum	ProxySetting { PROXY_OFF, PROXY_NEVER, PROXY_SCALE_DOWN, PROXY_NEAREST, PROXY_ALWAYS }

Public Member Functions
double	frame () const

void	setFrame (double v)

int	view () const

void	setView (int v)

void	view (int v)

void	setLineReadPreference (LineReadPreference linePreference)

LineReadPreference	lineReadPreference () const

void	append (Hash &) const

bool	operator== (const OutputContext &other) const

bool	operator!= (const OutputContext &other) const

bool	operator< (const OutputContext &other) const

bool	operator> (const OutputContext &other) const

const std::string &	viewname () const

const Format *	to_proxy_rel (const Format &from, Format &to, const OutputContext &rel) const

bool	sameProxy (const DD::Image::OutputContext &other) const

Public Member Functions inherited from DD::Image::ProxyContext
ProxySetting	proxy () const

void	setProxy (ProxySetting v)

float	scale_x () const

float	scale_y () const

float	translate_x () const

float	translate_y () const

void	setProxyscale (float scale)

void	setProxyscale (float sx, float sy)

void	setProxyscale (const Format &fullsize, const Format &proxysize)

void	setProxyscale (const Matrix4 &)

void	scale (float scale)

void	scale (float sx, float sy)

void	translate (float x, float y)

bool	isIdentity () const

void	to_proxy (Matrix4 &) const

void	to_proxy_wh (double &w, double &h) const

void	to_proxy_wh (float &w, float &h) const

double	to_proxy_w (double w) const

double	to_proxy_h (double w) const

void	to_proxy_xy (double &x, double &y) const

void	to_proxy_xy (float &x, float &y) const

double	to_proxy_x (double w) const

double	to_proxy_y (double w) const

double	from_proxy_x (double x) const

double	from_proxy_y (double y) const

void	to_proxy_box (DD::Image::Box &box) const

void	to_proxy_area (double &w, double &h) const

double	to_proxy_area (double area) const

void	to_proxy (const Format &from, Format &to) const

const Format *	to_proxy_rel (const Format &from, Format &to, const ProxyContext &) const

double	to_proxy_pixel_aspect (double pa) const

void	from_proxy (Matrix4 &) const

void	from_proxy_xy (double &x, double &y) const

void	from_proxy_wh (double &w, double &h) const

void	from_proxy_xy (float &x, float &y) const

void	from_proxy_wh (float &w, float &h) const

double	from_proxy_area (double area) const

double	from_proxy_pixel_aspect (double pa) const

void	appendProxy (Hash &hash) const
	Append the values affecting proxy scaling to the hash (i.e. not frame or view)

Static Public Member Functions
static const OutputContext &	defaultContext ()

static const std::string &	viewname (int v)

static const std::string &	viewshort (int v)

static int	viewcount ()

static bool	MultiView ()

static int	lookup_view (const std::string &viewname)

static void	set_viewnames (const std::string &s)

Static Public Attributes
static const OutputContext	default_

static void(*	create_view )(const std::string &s)

static int(*	viewIndex )(const std::string &viewName, Op *op)

static void(*	createView )(const std::string &viewName, const std::string &color, Op *op)

static const std::string &(*	viewName )(int index, Op *op)

static std::string(*	viewShortName )(int index, Op *op)

static void(*	setViewNames )(const std::vector< std::string > &viewNames, Op *op)
	Sets the op's root node to have view's named viewNames.

static int(*	viewCount )(Op *op)
	Returns the number of views on the op's root node.

static bool(*	hasMultipleViews )(Op *op)
	Returns true if op's root node has more than one view.

Friends
std::ostream &	operator<< (std::ostream &o, const OutputContext &)

Additional Inherited Members
Protected Member Functions inherited from DD::Image::ProxyContext
	ProxyContext ()

bool	isEqualTo (const ProxyContext &other) const

bool	isLessThan (const ProxyContext &other) const

Detailed Description

This is a block of data that is passed up the Op tree. The context modifies the values that are stored by knobs. An Op can further use information from it (such as the frame number) to modify it's behavior, by implementing Op::setOutputContext(). And an Op can modify the context that is used by each input, by implementing Op::inputContext().

Member Enumeration Documentation

enum DD::Image::OutputContext::LineReadPreference

Preferences which can be used to influence how files are read by Readers. eScanlineAlways - upstream Reader should always read frames line by line. ePreferScanline - prefer line-by-line reads, but allow other nodes upstream to override this preference. ePreferAllLines - prefer to read the whole of the requested area at once, but allow other nodes upstream to override this preference.

Member Function Documentation

void OutputContext::setLineReadPreference ( LineReadPreference linePreference )

By default readers read frames line by line (ePreferScanline). Some formats support reading the entire frame in one go. Setting the lineReadPreference can be used to switch between the two modes for these formats.

Referenced by DD::Image::Write::inputContext().

void OutputContext::append ( Hash & hash ) const

Add the contents of this to the hash, thus producing a different hash for any different setting of OutputContext.

int OutputContext::viewcount ( )

static

how many views exist. View 0 is always an extra view called 'default'. If there is one view, this is will be view 1.

Referenced by MultiView().

bool OutputContext::MultiView ( )

static

whether or not there are more than one actual view (not counting the hidden 'default' view)

References viewcount().

Member Data Documentation

int(* OutputContext::viewIndex)(const std::string &viewName, Op *op)

static

If a view exists with name viewName on op's root node then that view's index is returned, otherwise -1 is returned.

void(* OutputContext::createView)(const std::string &viewName, const std::string &color, Op *op)

static

Creates a new view with name viewName and color on op's root node.

const std::string &(* OutputContext::viewName)(int index, Op *op)

static

If a view exists at index on op's root node then that view's name is returned, otherwise an empty string is returned.

std::string(* OutputContext::viewShortName)(int index, Op *op)

static

If a view exists at index on op's root node then that view's short name is returned, otherwise an empty string is returned.

Public Types

Public Member Functions

Static Public Member Functions

Static Public Attributes

Friends

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

Member Function Documentation

Member Data Documentation