| gvSIG desktop 1

/*

 * Created on 25-oct-2006 by azabala

 *

 */

package com.iver.cit.gvsig.fmap.core.symbols;

import java.awt.BasicStroke;

import java.awt.Graphics2D;

import java.awt.geom.AffineTransform;

import com.iver.cit.gvsig.fmap.MapContext;

import com.iver.cit.gvsig.fmap.core.CartographicSupport;

import com.iver.cit.gvsig.fmap.core.FPoint2D;

import com.iver.cit.gvsig.fmap.core.FShape;

import com.iver.cit.gvsig.fmap.core.GeneralPathX;

import com.iver.utiles.StringUtilities;

import com.iver.utiles.XMLEntity;

import com.iver.utiles.swing.threads.Cancellable;

/**

 * @author jaume dominguez faus - jaume.dominguez@iver.es

 */

public class ArrowMarkerSymbol extends AbstractMarkerSymbol implements CartographicSupport {

        private ArrowMarkerSymbol symSel;

        private double sharpeness;

        public ISymbol getSymbolForSelection() {

                if (symSel == null) {

                        symSel = new ArrowMarkerSymbol();

                        symSel.setColor(MapContext.getSelectionColor());

                }

                return symSel;

        }

        public XMLEntity getXMLEntity() {

                XMLEntity xml = new XMLEntity();

                xml.putProperty("className", getClassName());

                xml.putProperty("isShapeVisible", isShapeVisible());

                xml.putProperty("desc", getDescription());

                xml.putProperty("size", getSize());

                xml.putProperty("unit", getUnit());

                xml.putProperty("referenceSystem", getReferenceSystem());

                xml.putProperty("sharpness", getSharpness());

                xml.putProperty("color", StringUtilities.color2String(getColor()));

                return xml;

        }

        public void setXMLEntity(XMLEntity xml) {

                setDescription(xml.getStringProperty("desc"));

                setIsShapeVisible(xml.getBooleanProperty("isShapeVisible"));

                setSize(xml.getDoubleProperty("size"));

                setUnit(xml.getIntProperty("unit"));

                setReferenceSystem(xml.getIntProperty("referenceSystem"));

                setSharpness(xml.getDoubleProperty("sharpness"));

                setColor(StringUtilities.string2Color(xml.getStringProperty("color")));

        }

        public String getClassName() {

                return getClass().getName();

        }

        /**

         * To get the sharpeness attribute.It will determine the final form of the arrow

         * @return

         */

        public double getSharpness() {

                return sharpeness;

        }

        /**

         * To set the sharpeness.It will determine the final form of the arrow

         * @param sharpeness, the value of the arrow's edge angle IN RADIANS

         * @see #getSharpeness()

         */

        public void setSharpness(double sharpeness) {

                this.sharpeness = sharpeness;

        }

        public void draw(Graphics2D g, AffineTransform affineTransform, FShape shp, Cancellable cancel) {

                FPoint2D p = (FPoint2D) shp;

                double radian_half_sharpeness = Math.toRadians(getSharpness()*.5); //

                double size = getSize();

                double halfHeight = size * Math.tan(radian_half_sharpeness);

                double theta = getRotation();

                g.setColor(getColor());

                g.setStroke(new BasicStroke());

                if (p == null) return;

                GeneralPathX gp = new GeneralPathX();

                gp.moveTo(0, 0);

                gp.lineTo(size, -halfHeight);

                gp.lineTo(size, halfHeight);

                gp.closePath();

                try {

                        g.translate(p.getX(), p.getY());

                } catch (NullPointerException npEx) {

                        return;

                }

                g.rotate(theta);

                g.fill(gp);

                g.rotate(-theta);

                g.translate(-p.getX(), -p.getY());

        }

}