C# (CSharp) DotSpatial.Projections.CoordinateTransformation Examples

Example #1

File: ProjectionExamples.cs Project: PedroMaitan/sharpmap

        public void TestConversionDSProjection()
        {
            var pi1 = DotSpatial.Projections.ProjectionInfo.FromEsriString(Osgb36);
            var pi2 = DotSpatial.Projections.ProjectionInfo.FromEsriString(WGS84);

            var ct = new DotSpatial.Projections.CoordinateTransformation();
            ct.Source = pi1;
            ct.Target = pi2;
        }

Example #2

        public void TestConversionDSProjection()
        {
            var pi1 = DotSpatial.Projections.ProjectionInfo.FromEsriString(Osgb36);
            var pi2 = DotSpatial.Projections.ProjectionInfo.FromEsriString(WGS84);

            var ct = new DotSpatial.Projections.CoordinateTransformation();

            ct.Source = pi1;
            ct.Target = pi2;
        }

Example #3

File: WmsLayer.cs Project: lishxi/_SharpMap

        private Envelope GetEnvelope()
        {
            var boxes = new Collection<Envelope>();
            var sridBoxes = getBoundingBoxes(RootLayer);
            foreach (var sridBox in sridBoxes)
            {
                if (SRID == sridBox.SRID)
                    boxes.Add(sridBox);
            }

            if (boxes.Count > 0)
            {
                var res = new Envelope();
                foreach (var envelope in boxes)
                    res.ExpandToInclude(envelope);

                return res;
            }

            if (SRID == 4326)
                return RootLayer.LatLonBoundingBox;

            try
            {
                var projection = this.GetCoordinateSystem();
                if (projection == null)
                {
                    Logger.Warn("WmsLayer envelope is null because there is no Coordinate System found for SRID " + SRID);
                    return null;
                }
                    

#if !DotSpatialProjections
                var wgs84 = GeographicCoordinateSystem.WGS84;

                var ctf = new CoordinateTransformationFactory();
                var transformation = ctf.CreateFromCoordinateSystems(wgs84, projection);
#else
                var wgs84 = DotSpatial.Projections.KnownCoordinateSystems.Geographic.World.WGS1984;

                var transformation = new DotSpatial.Projections.CoordinateTransformation
                {
                    Source = wgs84,
                    Target = projection
                };
#endif
                return ToTarget(RootLayer.LatLonBoundingBox, transformation);
            }
            catch (Exception e)
            {
                Logger.Warn("Error calculating Envelope Transformation from WGS84 to SRID " + SRID, e);
                return null;
            }
        }

Example #4

File: WmsLayer.cs Project: ssteenkiste/Sharpmap

        private Envelope GetEnvelope()
        {
            var boxes     = new Collection <Envelope>();
            var sridBoxes = getBoundingBoxes(RootLayer);

            foreach (var sridBox in sridBoxes)
            {
                if (SRID == sridBox.SRID)
                {
                    boxes.Add(sridBox);
                }
            }

            if (boxes.Count > 0)
            {
                var res = new Envelope();
                foreach (var envelope in boxes)
                {
                    res.ExpandToInclude(envelope);
                }

                return(res);
            }

            if (SRID == 4326)
            {
                return(RootLayer.LatLonBoundingBox);
            }

            try
            {
                var projection = this.GetCoordinateSystem();
                if (projection == null)
                {
                    Logger.Warn("WmsLayer envelope is null because there is no Coordinate System found for SRID " + SRID);
                    return(null);
                }


#if !DotSpatialProjections
                var wgs84 = GeographicCoordinateSystem.WGS84;

                var ctf            = new CoordinateTransformationFactory();
                var transformation = ctf.CreateFromCoordinateSystems(wgs84, projection);
#else
                var wgs84 = DotSpatial.Projections.KnownCoordinateSystems.Geographic.World.WGS1984;

                var transformation = new DotSpatial.Projections.CoordinateTransformation
                {
                    Source = wgs84,
                    Target = projection
                };
#endif
                return(ToTarget(RootLayer.LatLonBoundingBox, transformation));
            }
            catch (Exception e)
            {
                Logger.Warn("Error calculating Envelope Transformation from WGS84 to SRID " + SRID, e);
                return(null);
            }
        }