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ShearRegion


Header: FIL.h
Namespace: fil
Module: FoundationBasic

Computes a leant region.

Syntax

C++
C#
 
void fil::ShearRegion
(
	const fil::Region& inRegion,
	float inShear,
	fil::Axis::Type inAxis,
	fil::Region& outRegion
)

Parameters

Name Type Range Default Description
Input value inRegion const Region& Input region
Input value inShear float - - The relative shift of each consecutive row or column
Input value inAxis Axis::Type Switches between shifting rows or columns
Output value outRegion Region& Output region

Description

The filter ShearRegion applies basic affine transform to each regions's pixel.

Shear affine transform when X axis is selected:

\[ \left[\begin{array}{ccc} x' \\ y' \end{array} \right] = \left[\begin{array}{ccc} 1 & inShear \\ 0 & 1 \end{array} \right] \left[\begin{array}{ccc} x \\ y \end{array} \right] \]

Shear affine transform when Y axis is selected:

\[ \left[\begin{array}{ccc} x' \\ y' \end{array} \right] = \left[\begin{array}{ccc} 1 & 0\\ inShear & 1 \end{array} \right] \left[\begin{array}{ccc} x \\ y \end{array} \right] \]

See Also

  • ShearImage – Computes a leant image (shifts the rows).