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Always fix self-intersecting polygons that Douglas-Peucker might return

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Alessandro Ranellucci 2013-03-16 18:42:56 +01:00
parent dc0f706789
commit 33b40eda18
14 changed files with 85 additions and 55 deletions
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16
lib/Slic3r/GCode/MotionPlanner.pm
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@ -56,22 +56,20 @@ sub BUILD {
}
};
# simplify islands
@{$self->islands} = map $_->simplify($self->_inner_margin), @{$self->islands};
# process individual islands
for my $i (0 .. $#{$self->islands}) {
# simplify the island's contours
$self->islands->[$i]->simplify($self->_inner_margin);
for my $i (0 .. $#{$self->islands}) {
# offset the island inwards to make the boundaries for internal movements
# so that no motion along external perimeters happens
$self->_inner->[$i] = [ $self->islands->[$i]->offset_ex(-$self->_inner_margin) ]
if !$self->no_internal;
$self->_inner->[$i] = $self->no_internal
? []
: [ $self->islands->[$i]->offset_ex(-$self->_inner_margin) ];
# offset the island outwards to make the boundaries for external movements
$self->_outer->[$i] = [ $self->islands->[$i]->contour->offset($self->_outer_margin) ];
# further simplification (isn't this a duplication of the one above?)
$_->simplify($self->_inner_margin) for @{$self->_inner->[$i]}, @{$self->_outer->[$i]};
# if internal motion is enabled, build a set of utility expolygons representing
# the outer boundaries (as contours) and the inner boundaries (as holes). whenever
# we jump from a hole to a contour or viceversa, we know we're crossing a perimeter