lsst::afw::image::pixel::variance_multiplies< T1 > Struct Template Reference

Calculate the variance when we multiply two Pixels. More...

#include <Pixel.h>

Public Member Functions
T1	operator() (T1 const &x, T1 const &y, T1 const &vx, T1 const &vy) const
T1	operator() (T1 const &, T1 const &y, T1 const &vx) const

Detailed Description

template<typename T1>
struct lsst::afw::image::pixel::variance_multiplies< T1 >

Calculate the variance when we multiply two Pixels.

Note

We provide a single-operand version for when the right-hand-side of an expression is a scalar, not a masked pixel,

Definition at line 49 of file Pixel.h.

Member Function Documentation

operator()() [1/2]

template<typename T1 >

T1 lsst::afw::image::pixel::variance_multiplies< T1 >::operator() ( T1 const &  x, T1 const &  y, T1 const &  vx, T1 const &  vy  ) const

inline

Definition at line 377 of file Pixel.h.

                                                                              {
        T1 const x2 = x * x;
        T1 const y2 = y * y;
        return x2 * vy + y2 * vx;
    }

operator()() [2/2]

template<typename T1 >

T1 lsst::afw::image::pixel::variance_multiplies< T1 >::operator() ( T1 const &  , T1 const &  y, T1 const &  vx  ) const

inline

Definition at line 383 of file Pixel.h.

{ return vx * y * y; }

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

• /j/snowflake/release/lsstsw/stack/Linux64/afw/18.1.0/include/lsst/afw/image/Pixel.h