NAME

Math::PlanePath::MathImageCCurve -- Levy C curve

SYNOPSIS

 use Math::PlanePath::MathImageCCurve;
 my $path = Math::PlanePath::MathImageCCurve->new;
 my ($x, $y) = $path->n_to_xy (123);

DESCRIPTION

This is ...

                            11-----10-----9/7-----6------5               3
                             |             |             |                
                     13-----12             8             4------3        2
                      |                                         |         
              19---14/18----17                                  2        1
               |      |      |                                  |         
       21-----20     15-----16                           0------1   <- Y=0
        |                                                                 
       22                                                               -1
        |                                                                 
      25/23---24                                                        -2
        |                                                                 
       26     35-----34-----33                                          -3
        |      |             |                                            
      27/37--28/36          32                                          -4
        |      |             |                                            
       38     29-----30-----31                                          -5
        |                                                                 
    39/41-----40                                                        -6
        |                                                                 
       42                                              ...              -7
        |                                                |                
       43-----44     49-----48                          64-----63       -8
               |      |      |                                  |         
              45---46/50----47                                 62       -9
                      |                                         |         
                     51-----52            56            60-----61      -10
                             |             |             |                
                            53-----54----55/57---58-----59             -11

                                                         ^
       -7     -6     -5     -4     -3     -2     -1     X=0     1

FUNCTIONS

See "FUNCTIONS" in Math::PlanePath for the behaviour common to all path classes.

$path = Math::PlanePath::MathImageCCurve->new ()

Create and return a new path object.

($x,$y) = $path->n_to_xy ($n)

Return the X,Y coordinates of point number $n on the path. Points begin at 0 and if $n < 0 then the return is an empty list.

Fractional positions give an X,Y position along a straight line between the integer positions.

$n = $path->xy_to_n ($x,$y)

Return the point number for coordinates $x,$y. If there's nothing at $x,$y then return undef.

$n = $path->n_start()

Return 0, the first N in the path.

SEE ALSO

Math::PlanePath, Math::PlanePath::DragonCurve, Math::PlanePath::ComplexMinus