1 files changed, 81 insertions, 0 deletions
diff --git a/src/net/sourceforge/plantuml/svek/extremity/ExtremityHalfArrow.java b/src/net/sourceforge/plantuml/svek/extremity/ExtremityHalfArrow.java
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+++ b/src/net/sourceforge/plantuml/svek/extremity/ExtremityHalfArrow.java
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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.svek.extremity;
+
+import java.awt.geom.AffineTransform;
+import java.awt.geom.Point2D;
+
+import net.sourceforge.plantuml.ugraphic.UChangeBackColor;
+import net.sourceforge.plantuml.ugraphic.UGraphic;
+import net.sourceforge.plantuml.ugraphic.ULine;
+import net.sourceforge.plantuml.ugraphic.UTranslate;
+
+class ExtremityHalfArrow extends Extremity {
+
+	private final ULine line;
+	private final ULine otherLine;
+	private final Point2D contact;
+
+	@Override
+	public Point2D somePoint() {
+		return contact;
+	}
+
+	public ExtremityHalfArrow(Point2D p1, double angle, Point2D center) {
+		angle = manageround(angle);
+		final AffineTransform rotate = AffineTransform.getRotateInstance(angle + Math.PI / 2);
+		final int xWing = 9;
+		final int yAperture = 4;
+		final Point2D other = new Point2D.Double(-xWing, -yAperture);
+		rotate.transform(other, other);
+		this.contact = p1;
+		this.line = new ULine(center.getX() - contact.getX(), center.getY() - contact.getY());
+		this.otherLine = new ULine(other.getX(), other.getY());
+	}
+
+	public ExtremityHalfArrow(Point2D p0, double angle) {
+		throw new UnsupportedOperationException();
+	}
+
+	public void drawU(UGraphic ug) {
+		ug = ug.apply(new UChangeBackColor(ug.getParam().getColor()));
+		if (line != null && line.getLength() > 2) {
+			ug.apply(new UTranslate(contact.getX(), contact.getY())).draw(line);
+			ug.apply(new UTranslate(contact.getX(), contact.getY())).draw(otherLine);
+		}
+	}
+
+}