Changes between Version 2 and Version 3 of rfc61_support_for_measured_geometries

Timestamp:

Jan 27, 2016, 1:25:36 PM (8 years ago)

Author:

Ari Jolma

Comment:

--

rfc61_support_for_measured_geometries

@@ -38 +38 @@
 !IsEmpty = !(flags & OGR_G_NOT_EMPTY), Is3D = flags & OGR_G_3D, !IsMeasured = flags & OGR_G_MEASURED.
 
-Keep, but deprecate 
+Keep (with original semantics, i.e., coordinate dimension is 2 or 3), but deprecate 
 {{{
 getCoordinateDimension();
@@ -46 +46 @@
 class OGRGeometry:
 {{{
-//Add methods:
-int CoordinateDimension();
+//Possibly add methods (SF Common Architecture):
+int Dimension(); // -1 for empty geometries, 0 for points, 1 for curves, 2 for surfaces, max of components for collections
+int CoordinateDimension(); // 2 if not 3D and not measured, 3 if 3D or measured, 4 if 3D and measured
+int SpatialDimension(); // ?? 
+char *GeometryType(); // calls OGRToOGCGeomType (which needs to be enhanced)
+
+//Add methods (SF Common Architecture):
 OGRBoolean Is3D();
 OGRBoolean IsMeasured();
+
+//Add methods (non-standard, may cause internal changes, e.g., allocate memory for Z or M values):
 virtual void set3D(OGRBoolean bIs3D);
 virtual void setMeasured(OGRBoolean bIsMeasured);
@@ -57 +64 @@
 virtual OGRGeometry *LocateBetween(double mStart, double mEnd);
 }}}
+
+int !CoordinateDimension() should have the new semantics. The method name  in simple features documents actually is without prefix get. Similarly, 
 
 Add property double m to class OGRPoint. Add constructor, getters, and setters for it.