DD::Image::Black Class Reference

Inherits DD::Image::Iop.

List of all members.

Public Member Functions
const char *	Class () const
const char *	node_help () const
	Black (Node *, const Format *=0, const Format *=0)
	Black (const Format *=0, const Format *=0)
void	first_frame (int a)
int	first_frame () const
void	last_frame (int a)
int	last_frame () const
void	fragment_shader (const VertexContext &, Pixel &out)
bool	shade_GL (ViewerContext *, GeoInfo &)

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Detailed Description

This operator produces a completely empty and black image. The output bounding box is 1x1 and the output channels is Mask_None.

Nuke uses this for all disconnected inputs, setting the formats from those set on the Root group.

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Constructor & Destructor Documentation

Black::Black	(	Node *	node,
		const Format *	format = 0,
		const Format *	full_size_format = 0
	)

The constructor takes the format and full-size-format to return. If format is null then Format::None is used. If full_size_format is null then format is used.

References DD::Image::IopInfo::black_outside(), DD::Image::IopInfo::format(), DD::Image::IopInfo::full_size_format(), DD::Image::IopInfoOwner::info_, DD::Image::Op::inputs(), DD::Image::Format::is_none(), DD::Image::Format::None, DD::Image::Box::set(), DD::Image::Box::x(), and DD::Image::Box::y().

Black::Black	(	const Format *	format = 0,
		const Format *	full_size_format = 0
	)

The constructor takes the format and full-size-format to return. If format is null then Format::None is used. If full_size_format is null then format is used.

References DD::Image::IopInfo::black_outside(), DD::Image::IopInfo::format(), DD::Image::IopInfo::full_size_format(), DD::Image::IopInfoOwner::info_, DD::Image::Op::inputs(), DD::Image::Format::is_none(), DD::Image::Format::None, DD::Image::Box::set(), DD::Image::Box::x(), and DD::Image::Box::y().

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Member Function Documentation

void Black::fragment_shader	(	const VertexContext &	vtx,
		Pixel &	out
	)			[virtual]

When used to shade an object, this always renders opaque black.

Reimplemented from DD::Image::Iop.

References DD::Image::Pixel::channels, and DD::Image::VertexContext::w().

bool Black::shade_GL	(	ViewerContext *	ctx,
		GeoInfo &	geo
	)			[virtual]

OpenGL preview shading fails, an indication that the user interface color should be used to color the object instead.

Reimplemented from DD::Image::Iop.

References DD::Image::GeoInfo::draw_solid().