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A multidimensional, type-agnostic image processing library.
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/*
 * #%L
 * ImgLib2: a general-purpose, multidimensional image processing library.
 * %%
 * Copyright (C) 2009 - 2020 Tobias Pietzsch, Stephan Preibisch, Stephan Saalfeld,
 * John Bogovic, Albert Cardona, Barry DeZonia, Christian Dietz, Jan Funke,
 * Aivar Grislis, Jonathan Hale, Grant Harris, Stefan Helfrich, Mark Hiner,
 * Martin Horn, Steffen Jaensch, Lee Kamentsky, Larry Lindsey, Melissa Linkert,
 * Mark Longair, Brian Northan, Nick Perry, Curtis Rueden, Johannes Schindelin,
 * Jean-Yves Tinevez and Michael Zinsmaier.
 * %%
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
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 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
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package net.imglib2.position;

import java.util.function.BiConsumer;
import java.util.function.Supplier;

import net.imglib2.EuclideanSpace;

/**
 * Abstract base class for functions that generate values through a
 * {@link BiConsumer}.
 *
 * @author Stephan Saalfeld
 */
public abstract class AbstractFunctionEuclideanSpace< P, T > implements EuclideanSpace
{
	protected final int n;
	protected final Supplier< BiConsumer< P, ? super T > > functionSupplier;
	protected final Supplier< T > typeSupplier;

	/**
	 * Constructor for stateful functions that cannot be used concurrently.
	 *
	 * @param n
	 * @param functionSupplier
	 * @param typeSupplier
	 */
	public AbstractFunctionEuclideanSpace(
			final int n,
			final Supplier< BiConsumer< P, ? super T > > functionSupplier,
			final Supplier< T > typeSupplier )
	{
		this.n = n;
		this.functionSupplier = functionSupplier;
		this.typeSupplier = typeSupplier;
	}

	/**
	 * Simplified constructor if the same function is stateless and can be used
	 * concurrently.
	 *
	 * @param n
	 * @param function
	 * @param typeSupplier
	 */
	public AbstractFunctionEuclideanSpace(
			final int n,
			final BiConsumer< P, ? super T > function,
			final Supplier< T > typeSupplier )
	{
		this(n, () -> function, typeSupplier);
	}

	@Override
	public int numDimensions()
	{
		return n;
	}
}