expressions instead of raw expressions
We can greatly simplify the code by doing so, as all the handling
of preparing and optimising QgsPropertys are done automatically
for symbol layers.
Instead we should ALWAYS use the provided points for rendering symbol
layers, or the symbol layer will be broken in various circumstances
(e.g. when used outside of a vector layer)
Fixes#45028
Introduce a renderer for 1D mesh edges that can vary width over the line. The line can also have different color based on the actual dataset value on the line's point.
Co-authored-by: Peter Petrik <zilolv@gmail.com>
