Selection start/end detection

YamaArashi

Hello Ruby noob alert

I manually draw a line with the pencil tool and select it. If I then have a script with the code below the variable selection contains my line,I know because the clear deselects my line on the screen. My question is how do i get the start and end points of the selected line? I have been reading the google api site, but tbh the code examples are very fragmentry and putting stuff together is hard.


model = Sketchup.active_model
selection = model.selection
selection.clear

Jim

I made this mistake just yesterday (with def), but end is a Ruby keyword and not such a good name for a variable.

cjthompson

@jim said:

I made this mistake just yesterday (with def), but end is a Ruby keyword and not such a good name for a variable.

cjthompson

A "Selection" is a collection of entities (lines, faces, etc.)
In order to get the line, you have to get the first object in the Selection, since you only have one thing selected:
line = selection[0]

Then, once you have the line, you can get the start and end vertices like this:
vtxStart = line.start vtxEnd = line.end

To get the positions of the vertices, just type either: startPosition = vtxStart.position or endPosition = vtxEnd.position

Hopefully this is clear enough to get you started.