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New slicing algorithm based on a topological approach rather than numeric. It should be much more robust

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This commit is contained in:
Alessandro Ranellucci 2012-02-18 20:36:14 +01:00
parent de88144649
commit a9e7204fc6
6 changed files with 339 additions and 271 deletions
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24
t/stl.t
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@ -13,12 +13,12 @@ use Slic3r;
use Slic3r::Geometry qw(X Y Z A B);
use XXX;
my $mesh = Slic3r::TriangleMesh->new;
my @lines;
my $z = 20;
my @points = ([3, 4], [8, 5], [1, 9]); # XY coordinates of the facet vertices
my $mesh = Slic3r::TriangleMesh->new(facets => [], vertices => []);
is_deeply lines(20, 20, 20), [
[ $points[0], $points[1] ],
[ $points[1], $points[2] ],
@ -40,8 +40,8 @@ is_deeply lines(28, 20, 30), [ ], 'lower vertex on la
my @z = (24, 10, 16);
is_deeply lines(@z), [
[
line_plane_intersection([ vertices(@z)->[2], vertices(@z)->[0] ]),
line_plane_intersection([ vertices(@z)->[0], vertices(@z)->[1] ]),
line_plane_intersection([ vertices(@z)->[2], vertices(@z)->[0] ]),
]
], 'two edges intersect';
}
@ -70,8 +70,8 @@ is_deeply lines(28, 20, 30), [ ], 'lower vertex on la
my @z = (24, 10, 20);
is_deeply lines(@z), [
[
$points[2],
line_plane_intersection([ vertices(@z)->[0], vertices(@z)->[1] ]),
$points[2],
]
], 'one vertex on plane and one edge intersects';
}
@ -96,8 +96,8 @@ is_deeply lines(28, 20, 30), [ ], 'lower vertex on la
], 'one vertex on plane and one edge intersects';
}
my @lower = $mesh->intersect_facet(0, vertices(22, 20, 20), $z);
my @upper = $mesh->intersect_facet(0, vertices(20, 20, 10), $z);
my @lower = intersect(22, 20, 20);
my @upper = intersect(20, 20, 10);
is $lower[0]->facet_edge, 'bottom', 'bottom edge on layer';
is $upper[0]->facet_edge, 'top', 'upper edge on layer';
@ -106,8 +106,18 @@ sub vertices {
[ ($#{$mesh->vertices}-2) .. $#{$mesh->vertices} ]
}
sub add_facet {
push @{$mesh->facets}, [ [0,0,0], @{vertices(@_)} ];
$mesh->BUILD;
}
sub intersect {
add_facet(@_);
return $mesh->intersect_facet($#{$mesh->facets}, $z);
}
sub lines {
my @lines = $mesh->intersect_facet(0, vertices(@_), $z);
my @lines = intersect(@_);
$_->a->[X] = sprintf('%.0f', $_->a->[X]) for @lines;
$_->a->[Y] = sprintf('%.0f', $_->a->[Y]) for @lines;
$_->b->[X] = sprintf('%.0f', $_->b->[X]) for @lines;