Consider adding Shadow as new capability

[maxcollombin]

Consider adding Shadow as new capability

[oertz]

So like this (for qgis it is a "effect" capabilites) :

[jerstlouis]

Should we define this in Part 2?

[ebocher]

Must be done via a function. e.g : S_GeometryShadow(GEOMETRY geom, DOUBLE azimuth, DOUBLE altitude,DOUBLE height)

where geom: the geometry used to compute the shadow, azimuth and altitude: the position of the sun (parameters exprimed in radians). height value is used to extrude the facades of the geometry.

[oertz]

I was rather refering to parameters of general layer rendering, like in QGIS

[ebocher]

Ok. It seems interesting to add an extension Symbolizer Effects

[jerstlouis]

@ebocher yes this would typically be in screenspace rather than geographic / CRS space I think, so not a geometry manipulation function. It would typically be implemneted in GPU shaders.