uk.ac.starlink.table.join

Interface VariableRadiusConePixer

public interface VariableRadiusConePixer

Can calculate which sky pixels fall within a cone of variable radius.

Since:

10 May 2022

Author:

Mark Taylor

Method Summary

Modifier and Type	Method and Description
Object[]	getPixels(double alpha, double delta, double radius) Returns an array of objects representing pixels in a given region.

Method Detail

getPixels

Object[] getPixels(double alpha,
                   double delta,
                   double radius)

Returns an array of objects representing pixels in a given region. The parameters specify a small circle on the sphere; any pixels which overlap this circle must be returned (additional pixels may also be returned). The output objects must implement the equals and hashCode methods appropriately, so that objects returned from one call can be compared for identity with objects returned from a subsequent call.

Instances of this class are not thread-safe, and should not be used concurrently from multiple threads.

Parameters:

alpha - right ascension of circle centre in radians

delta - declination of circle centre in radians

radius - radius of circle in radians

Returns:

array of comparable pixel objects