DriverEllipseTeaVM.java

/* ========================================================================
 * 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:
 * 
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 * This file is part of PlantUML.
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 * 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.
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 * Original Author:  Arnaud Roques
 * 
 *
 */
package net.sourceforge.plantuml.teavm;

import net.sourceforge.plantuml.klimt.ClipContainer;
import net.sourceforge.plantuml.klimt.UClip;
import net.sourceforge.plantuml.klimt.UParam;
import net.sourceforge.plantuml.klimt.color.ColorMapper;
import net.sourceforge.plantuml.klimt.drawing.UDriver;
import net.sourceforge.plantuml.klimt.shape.UEllipse;

public class DriverEllipseTeaVM implements UDriver<UEllipse, SvgGraphicsTeaVM> {
	// ::remove file when JAVA8

	private final ClipContainer clipContainer;

	public DriverEllipseTeaVM(ClipContainer clipContainer) {
		this.clipContainer = clipContainer;
	}

	@Override
	public void draw(UEllipse ellipse, double x, double y, ColorMapper mapper, UParam param, SvgGraphicsTeaVM svg) {
		final double width = ellipse.getWidth();
		final double height = ellipse.getHeight();

		final UClip clip = clipContainer.getClip();
		if (clip != null) {
			if (clip.isInside(x, y) == false)
				return;
			if (clip.isInside(x + width, y + height) == false)
				return;
		}

		DriverRectangleTeaVM.applyFillColor(svg, mapper, param);
		DriverRectangleTeaVM.applyStrokeColor(svg, mapper, param);
		svg.setStrokeWidth(param.getStroke().getThickness());

		// UEllipse uses width/height, but SVG ellipse uses rx/ry (radii)
		// And x,y is top-left corner for UEllipse, but center for SVG
		final double cx = x + width / 2;
		final double cy = y + height / 2;
		final double rx = width / 2;
		final double ry = height / 2;

		if (Math.abs(rx - ry) < 0.01)
			svg.drawCircle(cx, cy, rx);
		else
			svg.drawEllipse(cx, cy, rx, ry);

	}
}