net.sourceforge.plantuml.gitlog.GitCurve Maven / Gradle / Ivy

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PlantUML is a component that allows to quickly write diagrams from text.
There is a newer version: 1.2024.8
// 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 .
 *
 * PlantUML can occasionally display sponsored or advertising messages. Those
 * messages are usually generated on welcome or error images and never on
 * functional diagrams.
 * See https://plantuml.com/professional if you want to remove them
 *
 * Images (whatever their format : PNG, SVG, EPS...) generated by running PlantUML
 * are owned by the author of their corresponding sources code (that is, their
 * textual description in PlantUML language). Those images are not covered by
 * this LGPL license.
 *
 * The generated images can then be used without any reference to the LGPL license.
 * It is not even necessary to stipulate that they have been generated with PlantUML,
 * although this will be appreciated by the PlantUML team.
 *
 * There is an exception : if the textual description in PlantUML language is also covered
 * by any license, then the generated images are logically covered
 * by the very same license.
 *
 * This is the IGY distribution (Install GraphViz by Yourself).
 * You have to install GraphViz and to setup the GRAPHVIZ_DOT environment variable
 * (see https://plantuml.com/graphviz-dot )
 *
 * Icons provided by OpenIconic :  https://useiconic.com/open
 * Archimate sprites provided by Archi :  http://www.archimatetool.com
 * Stdlib AWS provided by https://github.com/milo-minderbinder/AWS-PlantUML
 * Stdlib Icons provided https://github.com/tupadr3/plantuml-icon-font-sprites
 * ASCIIMathML (c) Peter Jipsen http://www.chapman.edu/~jipsen
 * ASCIIMathML (c) David Lippman http://www.pierce.ctc.edu/dlippman
 * CafeUndZopfli ported by Eugene Klyuchnikov https://github.com/eustas/CafeUndZopfli
 * Brotli (c) by the Brotli Authors https://github.com/google/brotli
 * Themes (c) by Brett Schwarz https://github.com/bschwarz/puml-themes
 * Twemoji (c) by Twitter at https://twemoji.twitter.com/
 *
 */
package net.sourceforge.plantuml.gitlog;

import java.util.ArrayList;
import java.util.List;

import h.ST_Agedgeinfo_t;
import h.ST_bezier;
import h.ST_pointf;
import h.ST_splines;
import net.sourceforge.plantuml.jsondiagram.Arrow;
import net.sourceforge.plantuml.jsondiagram.Mirror;
import net.sourceforge.plantuml.klimt.UPath;
import net.sourceforge.plantuml.klimt.UStroke;
import net.sourceforge.plantuml.klimt.color.HColor;
import net.sourceforge.plantuml.klimt.drawing.UGraphic;
import net.sourceforge.plantuml.klimt.geom.XPoint2D;

public class GitCurve {

	private final List points = new ArrayList<>();

	private final Mirror xMirror;

	private final XPoint2D sp;
	private final XPoint2D ep;

	public GitCurve(ST_Agedgeinfo_t data, Mirror xMirror) {
		this.xMirror = xMirror;
		final ST_splines splines = data.spl;
		if (splines.size != 1)
			throw new IllegalStateException();

		final ST_bezier beziers = splines.list.get__(0);
		for (int i = 0; i < beziers.size; i++) {
			final XPoint2D pt = getPoint(splines, i);
			points.add(pt);
		}

		if (beziers.sp.x == 0 && beziers.sp.y == 0)
			sp = null;
		else
			sp = new XPoint2D(beziers.sp.x, beziers.sp.y);

		if (beziers.ep.x == 0 && beziers.ep.y == 0)
			ep = null;
		else
			ep = new XPoint2D(beziers.ep.x, beziers.ep.y);

	}

	private XPoint2D getPoint(ST_splines splines, int i) {
		final ST_bezier beziers = splines.list.get__(0);
		final ST_pointf pt = beziers.list.get__(i);
		return new XPoint2D(pt.x, pt.y);
	}

	public void drawCurve(HColor color, UGraphic ug) {
		ug = ug.apply(new UStroke(2, 2, 1));
		final UPath path = UPath.none();

		path.moveTo(xMirror.invGit(points.get(0)));

		for (int i = 1; i < points.size(); i += 3) {
			final XPoint2D pt2 = xMirror.invGit(points.get(i));
			final XPoint2D pt3 = xMirror.invGit(points.get(i + 1));
			final XPoint2D pt4 = xMirror.invGit(points.get(i + 2));
			path.cubicTo(pt2, pt3, pt4);
		}
		ug.draw(path);

		if (ep != null) {
			final XPoint2D last = xMirror.invGit(points.get(points.size() - 1));
			final XPoint2D trueEp = xMirror.invGit(ep);
			new Arrow(last, trueEp).drawArrow(ug.apply(color.bg()));
		}
	}

}