Last updated at 4:19 am UTC on 11 March 2017
This class is a special kind of Pen that instead of actually drawing lines records the destination points for those lines. These points can later be accessed through my accessing method #points.
This can be useful when determining the boundaries of a drawing session.
| pen |
pen := PenPointRecorder new.
pen up; goto: 100@100; down; goto: 120@120.
show: 'Bounding box for drawing: ';
show: (Rectangle encompassing: pen points)
Implementation note: Shouldn't we override #drawFrom:to:withFirstPoint: instead, and what about #drawLoopX:Y:? Aren't we missing those calls?