net.sourceforge.plantuml.klimt.drawing.hand.HandJiggle Maven / Gradle / Ivy
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PlantUML is a component that allows to quickly write diagrams from text.
// THIS FILE HAS BEEN GENERATED BY A PREPROCESSOR.
/* +=======================================================================
* |
* | PlantUML : a free UML diagram generator
* |
* +=======================================================================
*
* (C) Copyright 2009-2024, Arnaud Roques
*
* Project Info: https://plantuml.com
*
* If you like this project or if you find it useful, you can support us at:
*
* https://plantuml.com/patreon (only 1$ per month!)
* https://plantuml.com/liberapay (only 1€ per month!)
* https://plantuml.com/paypal
*
*
* PlantUML is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library. If not, see points = new ArrayList<>();
private double startX;
private double startY;
private final double defaultVariation;
private final Random rnd;
private double randomMe() {
return rnd.nextDouble();
}
public HandJiggle(double startX, double startY, double defaultVariation, Random rnd) {
this.startX = startX;
this.startY = startY;
this.defaultVariation = defaultVariation;
this.rnd = rnd;
points.add(new XPoint2D(startX, startY));
}
public static HandJiggle create(XPoint2D start, double defaultVariation, Random rnd) {
return new HandJiggle(start.getX(), start.getY(), defaultVariation, rnd);
}
public void lineTo(XPoint2D end) {
lineTo(end.getX(), end.getY());
}
public void arcTo(double angle0, double angle1, double centerX, double centerY, double rx, double ry) {
lineTo(pointOnCircle(centerX, centerY, (angle0 + angle1) / 2, rx, ry));
lineTo(pointOnCircle(centerX, centerY, angle1, rx, ry));
}
private static XPoint2D pointOnCircle(double centerX, double centerY, double angle, double rx, double ry) {
final double x = centerX + Math.cos(angle) * rx;
final double y = centerY + Math.sin(angle) * ry;
return new XPoint2D(x, y);
}
public void lineTo(final double endX, final double endY) {
final double diffX = Math.abs(endX - startX);
final double diffY = Math.abs(endY - startY);
final double distance = Math.sqrt(diffX * diffX + diffY * diffY);
if (distance < 0.001)
return;
int segments = (int) Math.round(distance / 10);
double variation = defaultVariation;
if (segments < 5) {
segments = 5;
variation /= 3;
}
final double stepX = Math.signum(endX - startX) * diffX / segments;
final double stepY = Math.signum(endY - startY) * diffY / segments;
final double fx = diffX / distance;
final double fy = diffY / distance;
for (int s = 0; s < segments; s++) {
double x = stepX * s + startX;
double y = stepY * s + startY;
final double offset = (randomMe() - 0.5) * variation;
points.add(new XPoint2D(x - offset * fy, y - offset * fx));
}
points.add(new XPoint2D(endX, endY));
this.startX = endX;
this.startY = endY;
}
public void curveTo(XCubicCurve2D curve) {
final double flatness = curve.getFlatness();
final double dist = curve.getP1().distance(curve.getP2());
if (flatness > 0.1 && dist > 20) {
final XCubicCurve2D left = XCubicCurve2D.none();
final XCubicCurve2D right = XCubicCurve2D.none();
curve.subdivide(left, right);
curveTo(left);
curveTo(right);
return;
}
lineTo(curve.getP2());
}
public UPolygon toUPolygon() {
final UPolygon result = new UPolygon();
for (XPoint2D p : points)
result.addPoint(p.getX(), p.getY());
return result;
}
public UPath toUPath() {
UPath path = null;
for (XPoint2D p : points) {
if (path == null) {
path = UPath.none();
path.moveTo(p);
} else {
path.lineTo(p);
}
}
if (path == null)
throw new IllegalStateException();
return path;
}
public void appendTo(UPath result) {
for (XPoint2D p : points)
result.lineTo(p);
}
}