use strict;
use autodie;
-use File::Temp;
use List::Util;
+use POSIX;
+use File::Temp ();
+
+sub TAU () { M_PI * 2; }
our $fa = 10;
}
sub subdivide_triangle ($$) {
- my ($it, $fn) = @_;
+ my ($t, $fn) = @_;
my @mids;
foreach my $ix (0..2) {
my $jx = ($ix+1) % 3;
my @midp;
foreach my $ci (0..2) {
- push @midp, 0.5 * ($it->[$ix][$ci] + $it->[$jx][$ci]);
+ push @midp, 0.5 * ($t->[$ix][$ci] + $t->[$jx][$ci]);
}
push @mids, @midp;
}
foreach my $ix (0..2) {
my $kx = ($ix+2) % 3;
- $fn->([ $it->[$ix], $mids[$ix], $it->[$kx] ]);
+ $fn->([ $t->[$ix], $mids[$ix], $t->[$kx] ]);
}
$fn->(\@mids);
}
our $project_cylinder_max_d_theta;
sub project_cylinder_tri {
- my ($it) = @_;
+ my ($t) = @_;
- my $radius = project_cylinder_radius;
+ my $radius = $project_cylinder_radius;
- my @thetas = map { $_->[0] / $radius } @$it;
+ my @thetas = map { $_->[0] / $radius } @$t;
foreach my $ix (0..2) {
if (abs($thetas[$ix] - $thetas[($ix+1)%3])
> $project_cylinder_max_d_theta) {
- subdivide_triangle $it, \&project_cylinder_tri;
+ subdivide_triangle $t, \&project_cylinder_tri;
return;
}
}
my @ot;
- foreach my $p (@it) {
+ foreach my $p ($t) {
my ($x,$y,$z) = @$p;
my $r = $radius - $y;
my $theta = $x / $radius;
my $triangle;
while (<I>) {
- if (m/^\s+outer\s+loop/) {
+ s/^\s*//;
+ if (m/^outer\s+loop/) {
die if $triangle;
$triangle = [];
- } elsif (s/^\s+vertex\s+//) {
+ } elsif (s/^vertex\s+//) {
my $lhs = $&;
s/\s+$//;
my @xyz = split /\s+/, $_;
die unless $triangle;
- push @$triangle, \@xya;
- } elsif (m/^\s+endloop/) {
+ push @$triangle, \@xyz;
+ } elsif (m/^endloop/) {
die unless @$triangle == 3;
push @triangles, $triangle;
- } elsif (m/^\s+(?:solid|facet\s+normal|endfacet|endsolid)\s/) {
+ undef $triangle;
+ } elsif (m/^(?:solid|facet\s+normal|endfacet|endsolid)\s/) {
} else {
die "$_ ?";
}