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ask about

Topics: Data Access, General Topics, SharpMap v0.9 / v1.x
Mar 1, 2008 at 6:13 PM
Edited Mar 1, 2008 at 6:18 PM
i wanna ask about some thing in feature of sharp map

1-Independence from rendering technology used to generate map images.
2-Support for Points, Line stings, Polygons, MultiPoints, Multiline Strings, MultiPolygons, Geometry Collections etc. according to the OpenGIS Simple Features Specification.
3-Spatial indexing across layers.

and in architecture
1-in part of display viwes what wpf mapcontrol?
2-reprojection ??
Mar 2, 2008 at 12:11 AM
  1. This exists in v2.0. There is a "renderer model" where someone implements VectorRenderer2D<TRenderObject>, TextRenderer2D<TRenderObject>, and / or RasterRenderer2D<TRenderObject>. This has currently been done for GDI+ in v2.0, and WPF is on the way. John Diss and I are also gently looking into the possibility of using a different drawing technology for the web (such as Anti-grain Geometry), since GDI use on the server side is a no-no.
  2. Yes. In both v0.9 and v2.0.
  3. In v2.0, each vector layer (geometries and labels) has a spatial index. This has yet to be generalized to raster layers in Beta 2. Something should be available by v2.0 release.

  1. Blackrussian made some contributions to the WPF effort here.
  2. SharpMap uses Proj.Net