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/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2014, Arnaud Roques
*
* Project Info: http://plantuml.sourceforge.net
*
* This file is part of PlantUML.
*
* Licensed under The MIT License (Massachusetts Institute of Technology License)
*
* See http://opensource.org/licenses/MIT
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
* IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*
* Original Author: Arnaud Roques
*/
package net.sourceforge.plantuml.cute;
import java.awt.geom.Point2D;
import net.sourceforge.plantuml.ugraphic.UTranslate;
public class TriangleCorner {
private final Point2D o;
private final Point2D a;
private final Point2D b;
private final TriangleCornerSimple simple;
private final UTranslate translateO;
private final UTranslate translateOreverse;
private final RotationZoom rotation;
private final RotationZoom rotationInverse;
@Override
public String toString() {
return "Corner " + o + " a=" + a + " b=" + b;
}
public boolean hasCurvation() {
return ((MyPoint2D) o).hasCurvation();
}
public double getCurvation() {
if (hasCurvation() == false) {
throw new IllegalStateException();
}
return ((MyPoint2D) o).getCurvation(0);
}
public TriangleCorner(Point2D o, Point2D a, Point2D b) {
this.o = o;
this.a = a;
this.b = b;
this.translateO = new UTranslate(o);
this.translateOreverse = translateO.reverse();
final Point2D a2 = translateOreverse.getTranslated(a);
final Point2D b2 = translateOreverse.getTranslated((b));
final Point2D a3, b3;
if (a2.getX() == 0) {
a3 = a2;
b3 = b2;
this.rotation = RotationZoom.none();
this.rotationInverse = RotationZoom.none();
} else {
this.rotation = RotationZoom.builtRotationOnYaxis(a2);
this.rotationInverse = rotation.inverse();
a3 = rotation.getPoint(a2);
b3 = rotation.getPoint(b2);
}
this.simple = new TriangleCornerSimple(a3, b3);
}
public Point2D getOnSegmentA(double dist) {
final Segment seg = new Segment(o, a);
return seg.getFromAtoB(dist);
}
public Point2D getOnSegmentB(double dist) {
final Segment seg = new Segment(o, b);
return seg.getFromAtoB(dist);
}
public Balloon getCenterWithFixedRadius(double radius) {
final Point2D centerSimple = simple.getCenterWithFixedRadius(radius);
return new Balloon(rotationInverse.getPoint(translateO.getTranslated(centerSimple)), radius);
}
private Balloon getBalloonWithFixedY(double y) {
Balloon result = simple.getBalloonWithFixedY(y);
result = result.rotate(rotationInverse);
result = result.translate(translateO);
return result;
}
public Point2D getCornerOrBalloonCenter() {
if (hasCurvation()) {
return getBalloonInside().getCenter();
}
return getO();
}
public double determinant() {
final double ux = a.getX() - o.getX();
final double uy = a.getY() - o.getY();
final double vx = b.getX() - o.getX();
final double vy = b.getY() - o.getY();
return ux * vy - uy * vx;
}
public Point2D getO() {
return o;
}
public Balloon getBalloonInside() {
if (hasCurvation() == false) {
throw new IllegalStateException();
}
return getBalloonWithFixedY(getCurvation());
}
}
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