ROLLDROPS
The drops of a roll (carpet, underlay, vinyl flooring) laid across a floor: the lengths laid side by side, each the roll's width.
Syntax
ROLLDROPS(floor, width, angle, origin)
| Argument | Meaning |
|---|---|
| floor | The floor: an element, or a list of them ({@1,@4}: a room and its doorway), closed outlines joined into one. |
| width | The roll's width. |
| angle | The way the drops run (the pile's direction), in degrees anticlockwise from the X axis. |
| origin | A position the first seam runs through. |
Result
A list, a drop each: {outline, label position, number, length, area}: the drop's part of the floor (a list of
positions), where its label goes, its number (from 1), its length along the roll, and its area. A drop reaches only as
far as the floor does within its width.
Examples
In the example drawing, the circle @6 (40 across) as the floor, a roll 30 wide:
| Expression | Gives |
|---|---|
ROLLDROPS(@6,30,0,[30,-10]).COUNT |
2 |
ROLLDROPS(@6,30,0,[30,-10])[1][2] |
2 |
See also: ROLLSEAMS, ROLLPLAN, ROLLLENGTH, Roll Layout Tool.