NAME
Math::PlanePath::Columns  points in fixedheight columns
SYNOPSIS
use Math::PlanePath::Columns;
my $path = Math::PlanePath::Columns>new;
my ($x, $y) = $path>n_to_xy (123);
DESCRIPTION
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 ...
FUNCTIONS
$path = Math::PlanePath::Columns>new (height => $h)

Create and return a new path object. A
height
parameter must be supplied. ($x,$y) = $path>n_to_xy ($n)

Return the x,y coordinates of point number
$n
in the path. $n = $path>xy_to_n ($x,$y)

Return the point number for coordinates
$x,$y
.$x
and$y
are 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.
SEE ALSO
Math::PlanePath, Math::PlanePath::Rows
HOME PAGE
http://user42.tuxfamily.org/mathplanepath/index.html
LICENSE
MathPlanePath is Copyright 2010 Kevin Ryde
MathPlanePath 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.
MathPlanePath 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 MathPlanePath. If not, see <http://www.gnu.org/licenses/>.