impeller::Radius Struct Reference

For convolution filters, the "radius" is the size of the convolution kernel to use on the local space pixel grid of the filter input. For Gaussian blur kernels, this unit has a linear relationship with Sigma. See kKernelRadiusPerSigma for details on how this relationship works. More...

#include <sigma.h>

Public Member Functions
constexpr	Radius ()=default
constexpr	Radius (Scalar p_radius)
	operator Sigma () const

Public Attributes
Scalar	radius = 0.0

Detailed Description

For convolution filters, the "radius" is the size of the convolution kernel to use on the local space pixel grid of the filter input. For Gaussian blur kernels, this unit has a linear relationship with Sigma. See kKernelRadiusPerSigma for details on how this relationship works.

Definition at line 48 of file sigma.h.

Constructor & Destructor Documentation

Radius() [1/2]

constexpr impeller::Radius::Radius ( )

constexprdefault

Radius() [2/2]

constexpr impeller::Radius::Radius ( Scalar  p_radius )

inlineexplicitconstexpr

Definition at line 53 of file sigma.h.

: radius(p_radius) {}

Member Function Documentation

operator Sigma()

impeller::Radius::operator Sigma

(

)

const

Definition at line 15 of file sigma.cc.

                             {
  return Sigma{radius > 0 ? radius / kKernelRadiusPerSigma + 0.5f : 0.0f};
}

Member Data Documentation

radius

Scalar impeller::Radius::radius = 0.0

Definition at line 49 of file sigma.h.

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

• impeller/geometry/sigma.h
• impeller/geometry/sigma.cc