A suggestion to make drawing buildings easier: snap to regular angles. (30,45,90 deg.)
What I mean is: While drawing, there could be a modifier key (e.g. ctrl) that would make the node snap to a position where the line would be in a regular angle (30,45,60,90,... deg.).
Also the same key should act as a rectification aid when dragging a node that is part of a closed polygon.
The latter is best explained by the attached image. Each of the 3 snap points will make two right angles:
(1) at A and D
(2) at A and B
(3) at B and D
A suggestion to make drawing buildings easier: snap to regular angles. (30,45,90 deg.)
What I mean is: While drawing, there could be a modifier key (e.g. ctrl) that would make the node snap to a position where the line would be in a regular angle (30,45,60,90,... deg.).
Also the same key should act as a rectification aid when dragging a node that is part of a closed polygon. The latter is best explained by the attached image. Each of the 3 snap points will make two right angles: (1) at A and D (2) at A and B (3) at B and D