Longitudinal Profile tool enhancement

[tdipisa]

Description

It is requested to enhance the Longitudinal Profile tool by providing also GeoJson and DXF as export format.

What kind of improvement you want to add? (check one with "x", remove the others)

• Minor changes to existing features
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Other... Please describe:

Other useful information

Export in GeoJson is not a problem using the WPS output but we should investigate a bit for the DXF one evaluating available JS client solutions like https://www.npmjs.com/package/dxf-writer (or other). The dependency should be lazely loaded.

[MV88]

@tdipisa can you clarify a few details on what exactly has to exported?

this is a demo image

We have access to a set of points containing these info

property	value
altitude	1476
slope	0
totalDistanceToThisPoint	0
x	-11553493.05632706
y	5532835.989894417

Currently the available formats are referring to the chart line.
What should contain these new exported files?

For the GeoJSON

I assume that it will contain a Feature collection with Point geometries with three coordinates using altitude as third one and a few properties for each Point (slope and totalDistanceToThisPoint).
this will recreate the input line, it can be obvious but I just want to misinterpret the ACs

For the DXF

Should I do the same as for the GeoJSON? i.e recreating the line using this function
https://github.com/tarikjabiri/js-dxf/blob/34608442ed783de547b4224b6f98dee1996f9800/src/Drawing.js#L95
Optionally for the properties we might think of drawing some text near to the point
The DXF will use a Meters units and it will take the point geom already projected in 3857.

UI refactor

I think that we should refactor ta bit the ui because adding two more buttons to export two new formats is not ideal
We could simply add a generic Export button which opens up this UI, without selection of CRS

Or we can divide this into two comboboxes one for the PNG/PDF and one for the rest

[tdipisa]

@MV88 the export should contains the same of what already present in the CSV output that are tipically coordinates of points in the path along whit the altitude. For the DXF the same, that means geometry data of points.

Let's evaluate better the UI part with @allyoucanmap with the idea to have export formats list configurable.

The new dependency for DXF should be loaded in a lazy way.