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Fingerprint recognition engine that takes a pair of human fingerprint images and returns their similarity score. Supports efficient 1:N search.

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// Part of SourceAFIS for Java: https://sourceafis.machinezoo.com/java
package com.machinezoo.sourceafis.engine.primitives;

import java.util.*;

public class IntRect implements Iterable {
	public final int x;
	public final int y;
	public final int width;
	public final int height;
	public IntRect(int x, int y, int width, int height) {
		this.x = x;
		this.y = y;
		this.width = width;
		this.height = height;
	}
	public IntRect(IntPoint size) {
		this(0, 0, size.x, size.y);
	}
	public int left() {
		return x;
	}
	public int top() {
		return y;
	}
	public int right() {
		return x + width;
	}
	public int bottom() {
		return y + height;
	}
	public int area() {
		return width * height;
	}
	public static IntRect between(int startX, int startY, int endX, int endY) {
		return new IntRect(startX, startY, endX - startX, endY - startY);
	}
	public static IntRect between(IntPoint start, IntPoint end) {
		return between(start.x, start.y, end.x, end.y);
	}
	public static IntRect around(int x, int y, int radius) {
		return between(x - radius, y - radius, x + radius + 1, y + radius + 1);
	}
	public static IntRect around(IntPoint center, int radius) {
		return around(center.x, center.y, radius);
	}
	public IntPoint center() {
		return new IntPoint((right() + left()) / 2, (top() + bottom()) / 2);
	}
	public IntRect intersect(IntRect other) {
		return between(
			new IntPoint(Math.max(left(), other.left()), Math.max(top(), other.top())),
			new IntPoint(Math.min(right(), other.right()), Math.min(bottom(), other.bottom())));
	}
	public IntRect move(IntPoint delta) {
		return new IntRect(x + delta.x, y + delta.y, width, height);
	}
	private List