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/* ========================================================================
* PlantUML : a free UML diagram generator
* ========================================================================
*
* (C) Copyright 2009-2020, Arnaud Roques
*
* Project Info: http://plantuml.com
*
* If you like this project or if you find it useful, you can support us at:
*
* http://plantuml.com/patreon (only 1$ per month!)
* http://plantuml.com/paypal
*
* 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.
*
*
* Original Author: Arnaud Roques
*
*
*/
package net.sourceforge.plantuml.cute;
import java.awt.geom.Point2D;
import net.sourceforge.plantuml.ugraphic.UTranslate;
public class RotationZoom {
private final double angle;
private final double zoom;
private RotationZoom(double angle, double zoom) {
if (zoom < 0) {
throw new IllegalArgumentException();
}
this.angle = angle;
this.zoom = zoom;
}
public RotationZoom compose(RotationZoom other) {
return new RotationZoom(this.angle + other.angle, this.zoom * other.zoom);
}
@Override
public String toString() {
return "Rotation=" + Math.toDegrees(angle) + " Zoom=" + zoom;
}
public static RotationZoom fromVarArgs(VarArgs varArgs) {
final double radians = Math.toRadians(varArgs.getAsDouble("rotation", 0));
final double scale = varArgs.getAsDouble("scale", 1);
return new RotationZoom(radians, scale);
}
public static RotationZoom rotationInDegrees(double angle) {
return new RotationZoom(Math.toRadians(angle), 1);
}
public static RotationZoom rotationInRadians(double angle) {
return new RotationZoom(angle, 1);
}
public static RotationZoom zoom(double zoom) {
return new RotationZoom(0, zoom);
}
public RotationZoom inverse() {
return new RotationZoom(-angle, 1 / zoom);
}
public double getAngleDegree() {
return Math.toDegrees(angle);
}
static public RotationZoom builtRotationOnYaxis(Point2D toRotate) {
final double a = Math.atan2(toRotate.getX(), toRotate.getY());
return new RotationZoom(a, 1);
}
public Point2D.Double getPoint(double x, double y) {
if (angle == 0) {
return new Point2D.Double(x * zoom, y * zoom);
}
final double x1 = Math.cos(angle) * x - Math.sin(angle) * y;
final double y1 = Math.sin(angle) * x + Math.cos(angle) * y;
return new Point2D.Double(x1 * zoom, y1 * zoom);
}
public Point2D getPoint(Point2D p) {
return getPoint(p.getX(), p.getY());
}
public UTranslate getUTranslate(UTranslate translate) {
return new UTranslate(getPoint(translate.getDx(), translate.getDy()));
}
public static RotationZoom none() {
return new RotationZoom(0, 1);
}
public boolean isNone() {
return angle == 0 && zoom == 1;
}
public double applyZoom(double value) {
return value * zoom;
}
public double applyRotation(double alpha) {
return angle + alpha;
}
}
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