DD::Image::ReadGeo Class Reference

Inherits DD::Image::SourceGeo, and DD::Image::FileRead.

List of all members.

Public Member Functions
	ReadGeo (Node *node)
void	close ()
const char *	getFilename () const
void	filename (const char *f)
const char *	filename () const
virtual const char *	fname () const
virtual bool	readTextureWCoord ()
int	update_mode () const
int	full_geometry_frame () const
int	expected_first_frame () const
void	expected_first_frame (int v)
int	expected_last_frame () const
void	expected_last_frame (int v)
void	knobs (Knob_Callback)
int	knob_changed (Knob *k)
	The will handle the knob changes.
void	internalError (const char *fmt,...)
const char *	Class () const
const char *	node_help () const
Static Public Attributes
static const Description	d
Protected Member Functions
void	_validate (bool)
void	geometry_engine (Scene &, GeometryList &out)
void	get_geometry_hash ()
void	create_geometry (Scene &, GeometryList &out)
void	_close ()

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Detailed Description

Returns geometry from the outside world. The geometry is identified by the filename (which may just be a string interpreted by one of the reader implementations and not an actual file on the disk).

All the work is done by the various subclasses of GeoReader. ReadGeo just chooses what subclass to instantiate and returns the output from it, and correctly destroys and instantiates new ones as needed.

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Member Function Documentation

void ReadGeo::_validate

(

bool

for_real

)

[protected, virtual]

validate() will destroy any previous GeoReader and open a new one if the filename has changed or the version number has changed (the version number is incremented by the refresh button).

After opening the file, it copies the info_ from the Reader object. This will have been initialized with expected_first_frame(), expected_last_frame(), expected_format(), and expected_full_size_format(), but the Reader subclass may have changed this information.

For Nuke, this may be called with for_real set to false. If expected_format() and expected_full_size_format() are not null then no attempt is made to open the file and the the previous info_ is set to those formats and returned otherwise unchanged. This is done to avoid the overhead of opening image files that will not be used. Later when data is needed this is called again with for_real true, the file is really opened and the real info is determined.

Reimplemented from DD::Image::GeoOp.

References _close(), DD::Image::Hash::append(), DD::Image::Knob::get_text(), DD::Image::Op::knob(), DD::Image::Op::outputContext(), DD::Image::Hash::reset(), DD::Image::OutputContext::setFrame(), DD::Image::Op::uiContext(), and DD::Image::Op::validate().

void ReadGeo::get_geometry_hash

(

)

[protected, virtual]

Changes geometry hash by the filename. Use file date as well..?

Reimplemented from DD::Image::SourceGeo.

References DD::Image::Matrix4::a00, DD::Image::Matrix4::a01, DD::Image::Matrix4::a02, DD::Image::Matrix4::a03, DD::Image::Matrix4::a10, DD::Image::Matrix4::a11, DD::Image::Matrix4::a12, DD::Image::Matrix4::a13, DD::Image::Matrix4::a20, DD::Image::Matrix4::a21, DD::Image::Matrix4::a22, DD::Image::Matrix4::a23, DD::Image::Matrix4::a30, DD::Image::Matrix4::a31, DD::Image::Matrix4::a32, DD::Image::Matrix4::a33, DD::Image::Hash::append(), and DD::Image::GeoOp::geo_hash.

void ReadGeo::create_geometry	(	Scene &	scene,
		GeometryList &	out
	)			[protected, virtual]

Calls GeoReader::geometry_engine()

Implements DD::Image::SourceGeo.

References DD::Image::AttribContext::attribute, DD::Image::GeoInfo::Cache::attributes, DD::Image::GeoOp::cache_list, DD::Image::RefCountedPtr< T >::clear(), DD::Image::GeometryList::delete_objects(), DD::Image::GeoReader::geometry_engine(), DD::Image::AttribContext::group, DD::Image::Mask_Attributes, DD::Image::Mask_Points, DD::Image::Mask_Primitives, and DD::Image::GeoInfo::Cache::points.

void ReadGeo::_close

(

)

[protected, virtual]

Call this to close any current file. Besides freeing up resources, this can be used to make validate() check for the existence of a new file and prevent an error if the dimensions change.

Reimplemented from DD::Image::Op.

Referenced by _validate().

const char * ReadGeo::fname

(

)

const [virtual]

virtual bool DD::Image::ReadGeo::readTextureWCoord

(

)

[inline, virtual]

read texture texture w coord

int ReadGeo::knob_changed

(

Knob *

k

)

[virtual]

The will handle the knob changes.

The will handle the knob changes.

Reimplemented from DD::Image::GeoOp.

References DD::Image::Knob::disable(), DD::Image::Knob::enable(), and DD::Image::Knob::name().

void ReadGeo::internalError	(	const char *	fmt,
			...
	)

Normally calls Op::error(), but prefixes "filename: " to the message.

References DD::Image::Op::error(), strlcpy(), and vsnprintf().