public static extern System.Int32 SE_stream_set_shape(SE_STREAM stream, System.Int16 column, SE_SHAPE shape_val);
public static extern System.Int32 SE_shape_get_num_points(SE_SHAPE shape, System.Int32 part_num, System.Int32 subpart_num, ref System.Int32 num_pts);
public static extern System.Int32 SE_shape_generate_polygon(System.Int32 num_pts, System.Int32 num_parts, IntPtr part_offsets, IntPtr point_array, IntPtr z, IntPtr measure, SE_SHAPE tgt_shape);
public static extern System.Int32 SE_shape_get_type(SE_SHAPE shape, ref System.Int32 shape_type);
public static extern System.Int32 SE_shape_get_num_parts(SE_SHAPE shape, ref System.Int32 num_partsref, ref System.Int32 num_subparts);
public static extern System.Int32 SE_shape_get_all_points(SE_SHAPE shape, SE_ROTATION_TYPE rotation, IntPtr part_offsets, IntPtr subpart_offsets, IntPtr point_array, IntPtr z, IntPtr measure);
public static extern System.Int32 SE_shape_generate_rectangle(ref SE_ENVELOPE rect, SE_SHAPE tgt_shape);
public static extern void SE_shape_free(SE_SHAPE shape);
public static extern System.Int32 SE_shape_create(SE_COORDREF coordref, ref SE_SHAPE shape);
public static System.Int32 SE_GenerateGeometry(SE_SHAPE shape, IGeometry geometry, SE_ENVELOPE maxExtent)
{
if (geometry == null)
{
return(-1);
}
unsafe
{
SE_POINT * points = null;
System.Int32 *parts = null;
switch (geometry.GeometryType)
{
case geometryType.Envelope:
SE_ENVELOPE seEnvelope = new SE_ENVELOPE();
IEnvelope env = geometry.Envelope;
seEnvelope.minx = Math.Max(env.minx, maxExtent.minx);
seEnvelope.miny = Math.Max(env.miny, maxExtent.miny);
seEnvelope.maxx = Math.Min(env.maxx, maxExtent.maxx);
seEnvelope.maxy = Math.Min(env.maxy, maxExtent.maxy);
if (seEnvelope.minx == seEnvelope.maxx && seEnvelope.miny == seEnvelope.maxy)
{
/* fudge a rectangle so we have a valid one for generate_rectangle */
/* FIXME: use the real shape for the query and set the filter_type
* to be an appropriate type */
seEnvelope.minx = seEnvelope.minx - 0.001;
seEnvelope.maxx = seEnvelope.maxx + 0.001;
seEnvelope.miny = seEnvelope.miny - 0.001;
seEnvelope.maxy = seEnvelope.maxy + 0.001;
}
return(Wrapper10.SE_shape_generate_rectangle(ref seEnvelope, shape));
case geometryType.Point:
points = (SE_POINT *)Marshal.AllocHGlobal(sizeof(SE_POINT) * 1);
points[0].x = ((IPoint)geometry).X;
points[0].y = ((IPoint)geometry).Y;
return(Wrapper10.SE_shape_generate_point(1, (IntPtr)points, (IntPtr)null, (IntPtr)null, shape));
case geometryType.Polyline:
IPointCollection col1 = gView.Framework.SpatialAlgorithms.Algorithm.GeometryPoints(geometry, false);
IPolyline polyline = (IPolyline)geometry;
points = (SE_POINT *)Marshal.AllocHGlobal(sizeof(SE_POINT) * (col1.PointCount));
parts = (Int32 *)Marshal.AllocHGlobal(sizeof(Int32) * polyline.PathCount);
int pos1 = 0;
for (int i = 0; i < polyline.PathCount; i++)
{
parts[i] = pos1;
IPath path = polyline[i];
if (path.PointCount == 0)
{
continue;
}
for (int p = 0; p < path.PointCount; p++)
{
points[pos1].x = path[p].X;
points[pos1].y = path[p].Y;
pos1++;
}
}
return(Wrapper10.SE_shape_generate_line(pos1, polyline.PathCount, (IntPtr)parts, (IntPtr)points, (IntPtr)null, (IntPtr)null, shape));
case geometryType.Polygon:
IPointCollection col2 = gView.Framework.SpatialAlgorithms.Algorithm.GeometryPoints(geometry, false);
IPolygon polygon = (IPolygon)geometry;
points = (SE_POINT *)Marshal.AllocHGlobal(sizeof(SE_POINT) * (col2.PointCount + polygon.RingCount));
parts = (Int32 *)Marshal.AllocHGlobal(sizeof(Int32) * polygon.RingCount);
int pos2 = 0;
for (int i = 0; i < polygon.RingCount; i++)
{
parts[i] = pos2;
IRing ring = polygon[i];
if (ring.PointCount == 0)
{
continue;
}
for (int p = 0; p < ring.PointCount; p++)
{
points[pos2].x = ring[p].X;
points[pos2].y = ring[p].Y;
pos2++;
}
points[pos2].x = ring[0].X;
points[pos2].y = ring[0].Y;
pos2++;
}
return(Wrapper10.SE_shape_generate_polygon(pos2, polygon.RingCount, (IntPtr)parts, (IntPtr)points, (IntPtr)null, (IntPtr)null, shape));
case geometryType.Aggregate:
if (((AggregateGeometry)geometry).GeometryCount == 1)
{
return(SE_GenerateGeometry(shape, ((AggregateGeometry)geometry)[0], maxExtent));
}
//else
//{
// Polygon polygon = new Polygon();
// for (int i = 0; i < ((AggregateGeometry)geometry).GeometryCount; i++)
// {
// IGeometry g = ((AggregateGeometry)geometry)[i];
// if (g is IPolygon)
// {
// for (int p = 0; p < ((IPolygon)g).RingCount; p++)
// polygon.AddRing(((Polygon)g)[p]);
// }
// }
// if (polygon.RingCount > 0) return SE_GenerateGeometry(shape, polygon, maxExtent);
//}
return(-1);
}
}
return(-1);
}
