[etoys-notify] [JIRA] Created: (SQ-1108) point-arithmetics: gold box should offer @-tile

[Markus Schlager (JIRA)]

point-arithmetics: gold box should offer @-tile
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                 Key: SQ-1108
                 URL: http://tracker.squeakland.org/browse/SQ-1108
             Project: squeakland
          Issue Type: Feature
          Components: etoys
            Reporter: Markus Schlager
             Fix For: etoys 5.0.1


It would be nice to have an @-tile in order to compose a point out of two numbers.

Example: I'd like to do a project about motion with wind and gravity and I'm glad that there are variables of type point which make things like

    a <- F/m
    delta_v <- a * delta_t
    location <- location + (v * delta_t)

easier since I don't have to write everything twice (x and y).

On the other hand I may prefer variables of type number e.g. for gravity and (horicontal) wind velocity. Hence it would be great, if I could get things like

   a <- wind_vel @ g



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