Application: gvSIG desktop » gvSIG tools: Vector editing

package org.gvsig.vectorediting.lib.prov.editvertex.operation;

import java.util.ArrayList;

import java.util.List;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.GeometryLocator;

import org.gvsig.fmap.geom.GeometryManager;

import org.gvsig.fmap.geom.exception.CreateGeometryException;

import org.gvsig.fmap.geom.primitive.GeneralPathX;

import org.gvsig.fmap.geom.primitive.Line;

import org.gvsig.fmap.geom.primitive.OrientablePrimitive;

import org.gvsig.fmap.geom.primitive.Point;

import org.gvsig.fmap.geom.primitive.Primitive;

import org.gvsig.fmap.mapcontext.rendering.symbols.ISymbol;

import org.gvsig.vectorediting.lib.spi.DefaultDrawingStatus;

import org.gvsig.vectorediting.lib.spi.EditingProviderLocator;

import org.gvsig.vectorediting.lib.spi.EditingProviderManager;

public class LineEditVertexOperation implements EditVertexOperation {

    public LineEditVertexOperation() {

        // TODO Auto-generated constructor stub

    }

    public Geometry insertVertex(Primitive geom, int index)

        throws CreateGeometryException {

        if (index == 0) {

            return geom;

        }

        GeometryManager geometryManager = GeometryLocator.getGeometryManager();

        Line result =

            geometryManager.createLine(geom.getGeometryType().getSubType());

        Line line = (Line) geom;

        int numVertices = line.getNumVertices();

        Point antPoint = null;

        for (int i = 0; i < numVertices; i++) {

            Point point = line.getVertex(i);

            if (i == index) {

                result.addVertex(geometryManager.createPoint(

                    (point.getX() + antPoint.getX()) / 2,

                    (point.getY() + antPoint.getY()) / 2, geom

                        .getGeometryType().getSubType()));

            }

            result.addVertex(point);

            antPoint = point;

        }

        return result;

    }

    public Geometry removeVertex(Primitive geom, int index)

        throws CreateGeometryException {

        if (index < 0) {

            return geom;

        }

        GeometryManager geometryManager = GeometryLocator.getGeometryManager();

        Line result =

            geometryManager.createLine(geom.getGeometryType().getSubType());

        Line line = (Line) geom;

        int numVertices = line.getNumVertices();

        for (int i = 0; i < numVertices; i++) {

            Point point = line.getVertex(i);

            if (i == index) {

                continue;

            }

            result.addVertex(point);

        }

        return result;

    }

    public Geometry moveVertex(Primitive geom, int index, Point point) {

        Line result = (Line) geom.cloneGeometry();

        EditVertexOperationUtils.setVertex(result, index, point);

        return result;

    }

    public List<Point> getVertexesList(Primitive geom) {

        ArrayList<Point> vertexList = new ArrayList<Point>();

        if (geom instanceof OrientablePrimitive) {

            OrientablePrimitive orientable = (OrientablePrimitive) geom;

            orientable.getNumVertices();

            for (int i = 0; i < orientable.getNumVertices(); i++) {

                vertexList.add(orientable.getVertex(i));

            }

        }

        return vertexList;

    }

    public int getNumVertex(Primitive geom) {

        if (geom instanceof OrientablePrimitive) {

            OrientablePrimitive orientable = (OrientablePrimitive) geom;

            return orientable.getNumVertices();

        }

        return 0;

    }

    public boolean canInsertVertex(Primitive geom, int index) {

        if (index == 0) {

            return false;

        }

        return true;

    }

    public boolean canRemoveVertex(Primitive geom, int index) {

        return true;

    }

    public boolean canMoveVertex(int index, Point point) {

        return true;

    }

    public void addToDrawingStatus(DefaultDrawingStatus drawingStatus,

        Primitive primitive) {

        EditingProviderManager editingProviderManager =

            EditingProviderLocator.getProviderManager();

        ISymbol lineSymbolEditing =

            editingProviderManager.getSymbol("line-symbol-editing");

        drawingStatus.addStatus(primitive, lineSymbolEditing, "");

    }

}