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PlantUML is a component that allows to quickly write diagrams from text.

There is a newer version: 1.2025.0

// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
package net.sourceforge.plantuml.nwdiag.next;

import java.util.HashSet;
import java.util.Set;

public class BooleanGrid {

	private final Set burned = new HashSet<>();

	private int merge(int x, int y) {
		return x + (y << 16);
	}

	public void burn(int x, int y) {
		final boolean added = burned.add(merge(x, y));
		if (added == false)
			throw new IllegalArgumentException("Already present");

	}

	public boolean isBurned(int x, int y) {
		return burned.contains(merge(x, y));
	}

	public void burnRect(int x1, int y1, int x2, int y2) {
		check(x1, y1, x2, y2);
		for (int x = x1; x <= x2; x++)
			for (int y = y1; y <= y2; y++)
				burn(x, y);
	}

	public boolean isBurnRect(int x1, int y1, int x2, int y2) {
		check(x1, y1, x2, y2);
		for (int x = x1; x <= x2; x++)
			for (int y = y1; y <= y2; y++)
				if (isBurned(x, y))
					return true;
		return false;
	}

	private void check(int x1, int y1, int x2, int y2) {
		if (x1 < 0 || y1 < 0 || x2 < 0 || y2 < 0) {
			throw new IllegalArgumentException();
		}
		if (x2 < x1) {
			throw new IllegalArgumentException();
		}
		if (y2 < y1) {
			throw new IllegalArgumentException();
		}
	}

	// -----------------

	public boolean isSpaceAvailable(Staged element, int x) {
		if (isBurnRect(x, element.getStart().getNumber(), x + element.getNWidth() - 1, element.getEnd().getNumber()))
			return false;

		return true;
	}

	public void useSpace(Staged element, int x) {
		burnRect(x, element.getStart().getNumber(), x + element.getNWidth() - 1, element.getEnd().getNumber());
	}

}