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PlantUML is a component that allows to quickly write :
* sequence diagram,
* use case diagram,
* class diagram,
* activity diagram,
* component diagram,
* state diagram
* object diagram
/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2013, Arnaud Roques
*
* Project Info: http://plantuml.sourceforge.net
*
* This file is part of PlantUML.
*
* PlantUML is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* PlantUML distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
* License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA.
*
* [Java is a trademark or registered trademark of Sun Microsystems, Inc.
* in the United States and other countries.]
*
* Original Author: Arnaud Roques
*
* Revision $Revision: 9786 $
*
*/
package net.sourceforge.plantuml.geom;
public class Neighborhood {
final private double angle1;
final private double angle2;
final private Point2DInt center;
public Neighborhood(Point2DInt center) {
this(center, 0, 0);
}
public boolean is360() {
return angle1 == angle2;
}
public Neighborhood(Point2DInt center, double angle1, double angle2) {
this.center = center;
this.angle1 = angle1;
this.angle2 = angle2;
}
@Override
public String toString() {
final int a1 = (int) (angle1 * 180 / Math.PI);
final int a2 = (int) (angle2 * 180 / Math.PI);
return center + " " + a1 + " " + a2;
}
public final Point2DInt getCenter() {
return center;
}
public final double getMiddle() {
if (is360()) {
return angle1 + Math.PI;
}
double result = (angle1 + angle2) / 2;
if (angle2 < angle1) {
result += Math.PI;
}
return result;
}
public boolean isInAngleStrict(double angle) {
if (angle < 0) {
throw new IllegalArgumentException();
}
if (angle2 > angle1) {
return angle > angle1 && angle < angle2;
}
return angle > angle1 || angle < angle2;
}
public boolean isInAngleLarge(double angle) {
if (angle < 0) {
throw new IllegalArgumentException();
}
if (angle2 > angle1) {
return angle >= angle1 && angle <= angle2;
}
return angle >= angle1 || angle <= angle2;
}
public boolean isAngleLimit(double angle) {
return angle == angle1 || angle == angle2;
}
public Orientation getOrientationFrom(double angle) {
if (angle1 == angle2) {
throw new IllegalStateException();
}
if (angle != angle1 && angle != angle2) {
throw new IllegalArgumentException("this=" + this + " angle=" + (int) (angle * 180 / Math.PI));
}
assert angle == angle1 || angle == angle2;
if (angle == angle1) {
return Orientation.MATH;
}
return Orientation.CLOCK;
}
}