Point.java

/*
 * citygml4j - The Open Source Java API for CityGML
 * https://github.com/citygml4j
 * 
 * Copyright 2013-2017 Claus Nagel <claus.nagel@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *     http://www.apache.org/licenses/LICENSE-2.0
 *     
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.citygml4j.geometry;

import org.citygml4j.builder.copy.CopyBuilder;

public class Point implements Geometry {
	private double x;
	private double y;
	private double z;

	public Point() {
		//
	}

	public Point(double x, double y, double z) {
		this.x = x;
		this.y = y;
		this.z = z;
	}

	public Point(Point point) {
		this.x = point.x;
		this.y = point.y;
		this.z = point.z;
	}

	public Point(double singleValue) {
		x = y = z = singleValue;
	}

	public double getX() {
		return x;
	}
	public void setX(double x) {
		this.x = x;
	}
	public double getY() {
		return y;
	}
	public void setY(double y) {
		this.y = y;
	}
	public double getZ() {
		return z;
	}
	public void setZ(double z) {
		this.z = z;
	}

	public boolean isEqual(double singleValue) {
		return (x == singleValue && y == singleValue && z == singleValue);
	}

	public boolean isEqual(double x, double y, double z) {
		return (this.x == x && this.y == y && this.z == z);
	}

	public void transform3D(Matrix m) {
		if (m != null) {
			if (m.getColumnDimension() != 4 || m.getRowDimension() != 4)
				throw new IllegalArgumentException("A 3D transformation requires a 4x4 matrix.");

			Matrix v = new Matrix(new double[]{x, y, z, 1}, 4);
			v = m.times(v);

			x = v.get(0, 0);
			y = v.get(1, 0);
			z = v.get(2, 0);
		}
	}

	public Object copy(CopyBuilder copyBuilder) {
		return copyTo(new Point(), copyBuilder);
	}

	public Object copyTo(Object target, CopyBuilder copyBuilder) {
		Point copy = (target == null) ? new Point() : (Point)target;

		copy.setX(copyBuilder.copy(x));		
		copy.setY(copyBuilder.copy(y));		
		copy.setZ(copyBuilder.copy(z));

		return copy;
	}

}