inviwo::ImageSampler< ReturnType > Class Template Reference

ImageSampler aids sampling of images using Bi-Linear Interpolation. More...

#include <imagesampler.h>

Inheritance diagram for inviwo::ImageSampler< ReturnType >:

Public Member Functions
	ImageSampler (const Layer *layer)
	ImageSampler (std::shared_ptr< const Layer > layer)
	ImageSampler (const Image *img)
	ImageSampler (std::shared_ptr< const Image > sharedImage)
ReturnType	sample (double x, double y, CoordinateSpace space) const
ReturnType	sample (double x, double y) const
Public Member Functions inherited from inviwo::SpatialSampler< dvec4 >
	SpatialSampler (const SpatialEntity &spatialEntity, CoordinateSpace space=CoordinateSpace::Data)
dvec4	sample (const dvec3 &pos) const
bool	withinBounds (const dvec3 &pos) const
mat3	getBasis () const
mat4	getModelMatrix () const
mat4	getWorldMatrix () const
const SpatialCoordinateTransformer &	getCoordinateTransformer () const

Protected Member Functions
virtual ReturnType	sampleDataSpace (const dvec3 &pos) const override
virtual bool	withinBoundsDataSpace (const dvec3 &pos) const override

Additional Inherited Members
Public Types inherited from inviwo::SpatialSampler< dvec4 >
using	type
Static Public Attributes inherited from inviwo::SpatialSampler< dvec4 >
static const unsigned	SpatialDimensions
Protected Attributes inherited from inviwo::SpatialSampler< dvec4 >
CoordinateSpace	space_
const SpatialEntity &	spatialEntity_
dmat4	transform_

Detailed Description

template<typename ReturnType = dvec4>
class inviwo::ImageSampler< ReturnType >

ImageSampler aids sampling of images using Bi-Linear Interpolation.

A helper class to aid sampling of images. Expects the input to be on the range [0 1]. Eg., input of (0,0) will return the color of the bottom left pixel and (1,1) will return then top right pixel. Output values are bi-linear interpolated between the 4 nearest neighbors.

Constructor & Destructor Documentation

ImageSampler() [1/3]

template<typename ReturnType = dvec4>

inviwo::ImageSampler< ReturnType >::ImageSampler ( const Layer * layer )

inline

Creates a ImageSampler for the given Layer, does not take ownership of layer. Use ImageSampler(std::shared_ptr<const Layer>) to ensure that the Layer is available for the lifetime of the ImageSampler

ImageSampler() [2/3]

template<typename ReturnType = dvec4>

inviwo::ImageSampler< ReturnType >::ImageSampler ( const Image * img )

inline

Creates a ImageSampler for the given Image, does not take ownership of ram. Use ImageSampler(std::shared_ptr<const Image>) to ensure that the Image is available for the lifetime of the ImageSampler

ImageSampler() [3/3]

template<typename ReturnType = dvec4>

inviwo::ImageSampler< ReturnType >::ImageSampler ( std::shared_ptr< const Image > sharedImage )

inline

Creates a ImageSampler for the given Image. The shared_ptr will ensure that the Image is available for the lifetime of the ImageSampler

Member Function Documentation

sample() [1/2]

template<typename ReturnType = dvec4>

ReturnType inviwo::ImageSampler< ReturnType >::sample ( double x, double y ) const

inline

See also

sample(double, double, CoordinateSpace)

Parameters

x	X coordinate of the position to sample at
y	Y coordinate of the position to sample at

sample() [2/2]

template<typename ReturnType = dvec4>

ReturnType inviwo::ImageSampler< ReturnType >::sample ( double x, double y, CoordinateSpace space ) const

inline

Samples the image at the given position using bi-linear interpolation.

Parameters

x	position to sample at
y	position to sample at
space	in what CoordinateSpace x and y is defined in

sampleDataSpace()

template<typename ReturnType = dvec4>

virtual ReturnType inviwo::ImageSampler< ReturnType >::sampleDataSpace ( const dvec3 & pos ) const

inlineoverrideprotectedvirtual

Implements inviwo::SpatialSampler< dvec4 >.

withinBoundsDataSpace()

template<typename ReturnType = dvec4>

virtual bool inviwo::ImageSampler< ReturnType >::withinBoundsDataSpace ( const dvec3 & pos ) const

inlineoverrideprotectedvirtual

Implements inviwo::SpatialSampler< dvec4 >.

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

• imagesampler.h