Mercurial > dive4elements > river
view artifacts/src/main/java/org/dive4elements/river/java2d/ShapeUtils.java @ 6676:202ac69e0db1
Cosmetics, docs, imports.
author | Felix Wolfsteller <felix.wolfsteller@intevation.de> |
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date | Fri, 26 Jul 2013 12:55:34 +0200 |
parents | af13ceeba52a |
children | ddcd52d239cd |
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/* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde * Software engineering by Intevation GmbH * * This file is Free Software under the GNU AGPL (>=v3) * and comes with ABSOLUTELY NO WARRANTY! Check out the * documentation coming with Dive4Elements River for details. */ package org.dive4elements.river.java2d; import java.awt.Shape; import java.awt.geom.AffineTransform; import java.awt.geom.Ellipse2D; import java.awt.geom.GeneralPath; import java.awt.geom.Rectangle2D; import java.util.HashMap; import java.util.Map; public class ShapeUtils { // TODO: Use enum public static final int MEASURED = 0; public static final int DIGITIZED = 1; public static final int INTERPOLATED = 2; public static final boolean DIGITIZED_FILL = false; public static final boolean MEASURED_FILL = true; public static final boolean INTERPOLATED_FILL = false; public static final Shape DIGITIZED_SHAPE = createCross(4f); public static final Shape MEASURED_SHAPE = new Rectangle2D.Double(-2, -2, 4, 4); public static final Shape INTERPOLATED_SHAPE = new Ellipse2D.Double(-2, -2, 4, 4); protected static Map<Long, Shape> scaledShapesCache = new HashMap<Long, Shape>(); public static final Shape createCross(float size) { float half = size * 0.5f; GeneralPath p = new GeneralPath(); p.moveTo(-half, -half); p.lineTo(half, half); p.closePath(); p.moveTo(-half, half); p.lineTo(half, -half); p.closePath(); return p; } public static Shape scale(Shape shape, float factor) { if (factor == 1f) { return shape; } AffineTransform xform = AffineTransform.getScaleInstance(factor, factor); GeneralPath gp = new GeneralPath(shape); return gp.createTransformedShape(xform); } public static synchronized Shape getScaledShape(int type, float size) { Long hash = Long.valueOf( (((long)type) << 32) | Float.floatToIntBits(size)); Shape shape = scaledShapesCache.get(hash); if (shape == null) { switch (type) { case MEASURED: shape = MEASURED_SHAPE; break; case DIGITIZED: shape = DIGITIZED_SHAPE; break; default: shape = INTERPOLATED_SHAPE; } scaledShapesCache.put(hash, shape = scale(shape, size)); } return shape; } } // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :