RectangularPixel Class Reference

A pixel in a RectangularDetector. More...

Inheritance diagram for RectangularPixel:

Collaboration diagram for RectangularPixel:

Public Member Functions
	RectangularPixel (const kvector_t &corner_pos, const kvector_t &width, const kvector_t &height)
RectangularPixel *	clone () const override
RectangularPixel *	createZeroSizePixel (double x, double y) const override
kvector_t	getK (double x, double y, double wavelength) const override
kvector_t	getPosition (double x, double y) const
double	integrationFactor (double x, double y) const override
double	solidAngle () const override

Private Member Functions
double	calculateSolidAngle () const
kvector_t	normalizeLength (const kvector_t direction, double length) const

Private Attributes
const kvector_t	m_corner_pos
const kvector_t	m_height
const kvector_t	m_normal
double	m_solid_angle
const kvector_t	m_width

Detailed Description

A pixel in a RectangularDetector.

Definition at line 27 of file RectangularPixel.h.

Constructor & Destructor Documentation

RectangularPixel()

RectangularPixel::RectangularPixel	(	const kvector_t &	corner_pos,
		const kvector_t &	width,
		const kvector_t &	height
	)

Definition at line 18 of file RectangularPixel.cpp.

    : m_corner_pos(std::move(corner_pos))
    , m_width(std::move(width))
    , m_height(std::move(height))
    , m_normal(width.cross(height))
{
    // TODO URGENT: why allow solid angle <=0 ??
    auto solid_angle_value = calculateSolidAngle();
    m_solid_angle = solid_angle_value <= 0.0 ? 1.0 : solid_angle_value;
}

References calculateSolidAngle(), and m_solid_angle.

Referenced by clone(), and createZeroSizePixel().

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Member Function Documentation

calculateSolidAngle()

double RectangularPixel::calculateSolidAngle ( ) const

private

Definition at line 71 of file RectangularPixel.cpp.

{
    kvector_t position = getPosition(0.5, 0.5);
    double length = position.mag();
    return std::abs(position.dot(m_normal)) / std::pow(length, 3);
}

References BasicVector3D< T >::dot(), getPosition(), m_normal, and BasicVector3D< T >::mag().

Referenced by RectangularPixel().

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clone()

RectangularPixel * RectangularPixel::clone ( ) const

overridevirtual

Implements IPixel.

Definition at line 30 of file RectangularPixel.cpp.

{
    return new RectangularPixel(m_corner_pos, m_width, m_height);
}

References RectangularPixel(), m_corner_pos, m_height, and m_width.

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createZeroSizePixel()

RectangularPixel * RectangularPixel::createZeroSizePixel ( double  x, double  y  ) const

overridevirtual

Implements IPixel.

Definition at line 35 of file RectangularPixel.cpp.

{
    return new RectangularPixel(getPosition(x, y), kvector_t(), kvector_t());
}

References RectangularPixel(), and getPosition().

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getK()

kvector_t RectangularPixel::getK ( double  x, double  y, double  wavelength  ) const

overridevirtual

Implements IPixel.

Definition at line 40 of file RectangularPixel.cpp.

{
    kvector_t direction = getPosition(x, y);
    double length = M_TWOPI / wavelength;
    return normalizeLength(direction, length);
}

References getPosition(), M_TWOPI, and normalizeLength().

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getPosition()

kvector_t RectangularPixel::getPosition	(	double	x,
		double	y
	)		const

Definition at line 47 of file RectangularPixel.cpp.

{
    return m_corner_pos + x * m_width + y * m_height;
}

References m_corner_pos, m_height, and m_width.

Referenced by calculateSolidAngle(), createZeroSizePixel(), getK(), and integrationFactor().

integrationFactor()

double RectangularPixel::integrationFactor ( double  x, double  y  ) const

overridevirtual

Implements IPixel.

Definition at line 52 of file RectangularPixel.cpp.

{
    if (m_solid_angle == 0.0)
        return 1.0;
    kvector_t position = getPosition(x, y);
    double length = position.mag();
    return std::abs(position.dot(m_normal)) / std::pow(length, 3) / m_solid_angle;
}

References BasicVector3D< T >::dot(), getPosition(), m_normal, m_solid_angle, and BasicVector3D< T >::mag().

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normalizeLength()

kvector_t RectangularPixel::normalizeLength ( const kvector_t  direction, double  length  ) const

private

Definition at line 66 of file RectangularPixel.cpp.

{
    return direction.unit() * length;
}

References BasicVector3D< T >::unit().

Referenced by getK().

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solidAngle()

double RectangularPixel::solidAngle ( ) const

overridevirtual

Implements IPixel.

Definition at line 61 of file RectangularPixel.cpp.

{
    return m_solid_angle;
}

References m_solid_angle.

Member Data Documentation

m_corner_pos

const kvector_t RectangularPixel::m_corner_pos

private

Definition at line 42 of file RectangularPixel.h.

Referenced by clone(), and getPosition().

m_height

const kvector_t RectangularPixel::m_height

private

Definition at line 44 of file RectangularPixel.h.

Referenced by clone(), and getPosition().

m_normal

const kvector_t RectangularPixel::m_normal

private

Definition at line 45 of file RectangularPixel.h.

Referenced by calculateSolidAngle(), and integrationFactor().

m_solid_angle

double RectangularPixel::m_solid_angle

mutableprivate

Definition at line 46 of file RectangularPixel.h.

Referenced by RectangularPixel(), integrationFactor(), and solidAngle().

m_width

const kvector_t RectangularPixel::m_width

private

Definition at line 43 of file RectangularPixel.h.

Referenced by clone(), and getPosition().

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

• /home/www/ba/Device/Detector/RectangularPixel.h
• /home/www/ba/Device/Detector/RectangularPixel.cpp