Math::PlanePath::Columns -- points in fixed-height columns
use Math::PlanePath::Columns; my $path = Math::PlanePath::Columns->new; my ($x, $y) = $path->n_to_xy (123);
This path is columns of a given fixed height. For example height 5 would be
| 4 | 5 10 15 20 ---> height==5 3 | 4 9 14 19 2 | 3 8 13 18 1 | 2 7 12 17 ... y=0 | 1 6 11 16 21 ---------------------- x=0 1 2 3 4 ...
$path = Math::PlanePath::Columns->new (height => $h)
Create and return a new path object. A
heightparameter must be supplied.
($x,$y) = $path->n_to_xy ($n)
Return the x,y coordinates of point number
$nin the path.
$n = $path->xy_to_n ($x,$y)
Return the point number for coordinates
$yare rounded to the nearest integers, which has the effect of treating each point in the path as a square of side 1, so a rectangle $x >= -0.5 and -0.5 <= y < height+0.5 is covered.
Math-PlanePath is Copyright 2010 Kevin Ryde
Math-PlanePath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3, or (at your option) any later version.
Math-PlanePath is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with Math-PlanePath. If not, see <http://www.gnu.org/licenses/>.