protected override InteractiveResult MouseUpCore(InteractionArguments interactionArguments)
{
if (IsShiftKeyDown == true)
{
PolygonShape newPolygonShape = (PolygonShape)EditShapesLayer.InternalFeatures[0].GetShape();
RingShape ringShape = new RingShape();
foreach (Feature feature in controlPoints)
{
PointShape controlPointShape = (PointShape)feature.GetShape();
if (feature.ColumnValues["nodetype"] == "special")
{
BaseShape baseShape = snappingFeature.GetShape();
PointShape pointShape = baseShape.GetClosestPointTo(controlPointShape, GeographyUnit.DecimalDegree);
ringShape.Vertices.Add(new Vertex(pointShape.X, pointShape.Y));
}
else
{
ringShape.Vertices.Add(new Vertex(controlPointShape.X, controlPointShape.Y));
}
}
newPolygonShape.OuterRing = ringShape;
Feature newFeature = new Feature(newPolygonShape, EditShapesLayer.InternalFeatures[0].ColumnValues);
EditShapesLayer.Open();
EditShapesLayer.EditTools.BeginTransaction();
EditShapesLayer.InternalFeatures.Clear();
EditShapesLayer.InternalFeatures.Add(newFeature);
EditShapesLayer.EditTools.CommitTransaction();
EditShapesLayer.Close();
}
return(base.MouseUpCore(interactionArguments));
}
//Overrides the DrawCore function.
protected override void DrawCore(GeoCanvas canvas)
{
//Draws the Edit Shapes as default.
Collection <SimpleCandidate> labelsInAllLayers = new Collection <SimpleCandidate>();
EditShapesLayer.Open();
EditShapesLayer.Draw(canvas, labelsInAllLayers);
canvas.Flush();
//Draws the control points.
ExistingControlPointsLayer.Open();
Collection <Feature> controlPoints = ExistingControlPointsLayer.FeatureSource.GetAllFeatures(ReturningColumnsType.AllColumns);
//Loops thru the control points.
foreach (Feature feature in controlPoints)
{
//Looks at the value of "state" to draw the control point as dragged or not.
if (feature.ColumnValues["state"] != "selected")
{
Feature[] features = new Feature[1] {
feature
};
controlPointStyle.Draw(features, canvas, labelsInAllLayers, labelsInAllLayers);
}
else
{
Feature[] features = new Feature[1] {
feature
};
draggedControlPointStyle.Draw(features, canvas, labelsInAllLayers, labelsInAllLayers);
PointShape pointShape = feature.GetShape() as PointShape;
PointShape closestPointShape = referenceShape.GetClosestPointTo(pointShape, GeographyUnit.DecimalDegree);
//Draws the closest point on the reference shape and the distance to it from the dragged control point.
if (closestPointShape != null)
{
double Dist = System.Math.Round(closestPointShape.GetDistanceTo(pointShape, GeographyUnit.DecimalDegree, DistanceUnit.Meter));
ScreenPointF ScreenPointF = ExtentHelper.ToScreenCoordinate(canvas.CurrentWorldExtent, pointShape, canvas.Width, canvas.Height);
canvas.DrawTextWithScreenCoordinate(System.Convert.ToString(Dist) + " m", new GeoFont("Arial", 12, DrawingFontStyles.Bold), new GeoSolidBrush(GeoColor.StandardColors.Black),
ScreenPointF.X + 35, ScreenPointF.Y, DrawingLevel.LabelLevel);
canvas.DrawEllipse(closestPointShape, 12, 12, new GeoSolidBrush(GeoColor.StandardColors.Purple), DrawingLevel.LevelFour);
}
}
}
}