teichmann@5863: /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
teichmann@5863:  * Software engineering by Intevation GmbH
teichmann@5863:  *
teichmann@5994:  * This file is Free Software under the GNU AGPL (>=v3)
teichmann@5863:  * and comes with ABSOLUTELY NO WARRANTY! Check out the
teichmann@5994:  * documentation coming with Dive4Elements River for details.
teichmann@5863:  */
teichmann@5863: 
teichmann@5831: package org.dive4elements.river.java2d;
sascha@3162: 
gernotbelger@9496: import java.awt.Color;
sascha@3162: import java.awt.Shape;
gernotbelger@9360: import java.awt.geom.Area;
sascha@3162: import java.awt.geom.Ellipse2D;
sascha@3162: import java.awt.geom.GeneralPath;
sascha@3162: import java.awt.geom.Rectangle2D;
sascha@3162: import java.util.HashMap;
sascha@3162: import java.util.Map;
sascha@3162: 
gernotbelger@9360: public class ShapeUtils {
sascha@3162: 
gernotbelger@9360:     public static enum ShapeType {
gernotbelger@9360:         measured, digitized, interpolated, outlier
gernotbelger@9360:     }
sascha@3162: 
gernotbelger@9360:     private static Map<Long, Shape> scaledShapesCache = new HashMap<>();
gernotbelger@9360: 
gernotbelger@9496:     private static final Shape createCross(final float size) {
gernotbelger@9360: 
gernotbelger@9360:         final GeneralPath p = new GeneralPath();
gernotbelger@9360: 
gernotbelger@9360:         p.moveTo(-size, -size);
gernotbelger@9360:         p.lineTo(size, size);
sascha@3162:         p.closePath();
gernotbelger@9360:         p.moveTo(-size, size);
gernotbelger@9360:         p.lineTo(size, -size);
sascha@3162:         p.closePath();
gernotbelger@9360: 
sascha@3162:         return p;
sascha@3162:     }
sascha@3162: 
gernotbelger@9496:     private static Shape createBox(final float size) {
gernotbelger@9360:         return new Rectangle2D.Double(-size, -size, size * 2, size * 2);
sascha@3162:     }
sascha@3162: 
gernotbelger@9496:     private static Shape createCircle(final float size) {
gernotbelger@9360:         return new Ellipse2D.Float(-size, -size, size * 2, size * 2);
gernotbelger@9360:     }
sascha@3162: 
gernotbelger@9496:     private static final Shape createTriangle(final float size) {
gernotbelger@9360:         final GeneralPath p = new GeneralPath();
gernotbelger@9360: 
gernotbelger@9360:         p.moveTo(-size, size);
gernotbelger@9360:         p.lineTo(size, size);
gernotbelger@9360:         p.lineTo(0, -size);
gernotbelger@9360:         p.closePath();
gernotbelger@9360: 
gernotbelger@9360:         return new Area(p);
gernotbelger@9360:     }
gernotbelger@9360: 
gernotbelger@9496:     public static synchronized Shape getScaledShape(final ShapeType type, final float size) {
gernotbelger@9360: 
gernotbelger@9360:         final Long hash = Long.valueOf((((long) type.ordinal()) << 32) | Float.floatToIntBits(size));
gernotbelger@9360: 
gernotbelger@9360:         final Shape shape = scaledShapesCache.get(hash);
gernotbelger@9360:         if (shape != null)
gernotbelger@9360:             return shape;
gernotbelger@9360: 
gernotbelger@9360:         final Shape newShape = createScaledShape(type, size);
gernotbelger@9360:         scaledShapesCache.put(hash, newShape);
gernotbelger@9360:         return newShape;
gernotbelger@9360:     }
gernotbelger@9360: 
gernotbelger@9496:     private static Shape createScaledShape(final ShapeType type, final float size) {
gernotbelger@9360:         switch (type) {
gernotbelger@9360:         case measured:
gernotbelger@9360:             return createBox(size);
gernotbelger@9360: 
gernotbelger@9360:         case digitized:
gernotbelger@9360:             return createCross(size);
gernotbelger@9360: 
gernotbelger@9360:         case outlier:
gernotbelger@9360:             return createTriangle(size);
gernotbelger@9360: 
gernotbelger@9360:         case interpolated:
gernotbelger@9360:         default:
gernotbelger@9360:             return createCircle(size);
sascha@3162:         }
sascha@3162:     }
gernotbelger@9496: 
gernotbelger@9496:     public static Color withAlpha(final Color color, final int transparencyPercent) {
gernotbelger@9496: 
gernotbelger@9496:         if (transparencyPercent <= 0 || transparencyPercent > 100 || color == null)
gernotbelger@9496:             return color;
gernotbelger@9496: 
gernotbelger@9496:         return new Color(color.getRed(), color.getGreen(), color.getBlue(), (int) ((100 - transparencyPercent) * 2.55f));
gernotbelger@9496:     }
gernotbelger@9360: }