org.sunflow.core

Interface Filter

Known Implementing Classes:
BlackmanHarrisFilter, BoxFilter, CatmullRomFilter, GaussianFilter, LanczosFilter, MitchellFilter, SincFilter, TriangleFilter

public interface Filter

Represents a multi-pixel image filter kernel.

Method Summary

float
get(float x, float y)
Get value of the filter at offset (x, y).
float
getSize()
Width in pixels of the filter extents.

Method Details

get

public float get(float x,
                 float y)
Get value of the filter at offset (x, y). The filter should never be called with values beyond its extents but should return 0 in those cases anyway.
Parameters:
x - x offset in pixels
y - y offset in pixels
Returns:
value of the filter at the specified location

getSize

public float getSize()
Width in pixels of the filter extents. The filter will be applied to the range of pixels within a box of +/- getSize() / 2 around the center of the pixel.
Returns:
width in pixels