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Ported GCode::travel_to() to XS

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This commit is contained in:
Alessandro Ranellucci 2015-07-02 15:12:04 +02:00
parent a6f4c8e567
commit b025efe729
4 changed files with 44 additions and 38 deletions
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38
lib/Slic3r/GCode.pm
View file

@ -296,42 +296,4 @@ sub _extrude_path {
return $gcode;
}
# This method accepts $point in print coordinates.
sub travel_to {
my ($self, $point, $role, $comment) = @_;
# Define the travel move as a line between current position and the taget point.
# This is expressed in print coordinates, so it will need to be translated by
# $self->origin in order to get G-code coordinates.
my $travel = Slic3r::Polyline->new($self->last_pos, $point);
# check whether a straight travel move would need retraction
my $needs_retraction = $self->needs_retraction($travel, $role // EXTR_ROLE_NONE);
# if a retraction would be needed, try to use avoid_crossing_perimeters to plan a
# multi-hop travel path inside the configuration space
if ($needs_retraction
&& $self->config->avoid_crossing_perimeters
&& !$self->avoid_crossing_perimeters->disable_once) {
$travel = $self->avoid_crossing_perimeters->travel_to($self, $point);
# check again whether the new travel path still needs a retraction
$needs_retraction = $self->needs_retraction($travel, $role // EXTR_ROLE_NONE);
}
# Re-allow avoid_crossing_perimeters for the next travel moves
$self->avoid_crossing_perimeters->set_disable_once(0);
$self->avoid_crossing_perimeters->set_use_external_mp_once(0);
# generate G-code for the travel move
my $gcode = "";
$gcode .= $self->retract if $needs_retraction;
# use G1 because we rely on paths being straight (G0 may make round paths)
$gcode .= $self->writer->travel_to_xy($self->point_to_gcode($_->b), $comment)
for @{$travel->lines};
return $gcode;
}
1;

41
xs/src/libslic3r/GCode.cpp
View file

@ -267,6 +267,47 @@ GCode::preamble()
return gcode;
}
// This method accepts &point in print coordinates.
std::string
GCode::travel_to(const Point &point, ExtrusionRole role, std::string comment)
{
/* Define the travel move as a line between current position and the taget point.
This is expressed in print coordinates, so it will need to be translated by
$self->origin in order to get G-code coordinates. */
Polyline travel;
travel.append(this->last_pos());
travel.append(point);
// check whether a straight travel move would need retraction
bool needs_retraction = this->needs_retraction(travel, role);
// if a retraction would be needed, try to use avoid_crossing_perimeters to plan a
// multi-hop travel path inside the configuration space
if (needs_retraction
&& this->config.avoid_crossing_perimeters
&& !this->avoid_crossing_perimeters.disable_once) {
travel = this->avoid_crossing_perimeters.travel_to(*this, point);
// check again whether the new travel path still needs a retraction
needs_retraction = this->needs_retraction(travel, role);
}
// Re-allow avoid_crossing_perimeters for the next travel moves
this->avoid_crossing_perimeters.disable_once = false;
this->avoid_crossing_perimeters.use_external_mp_once = false;
// generate G-code for the travel move
std::string gcode;
if (needs_retraction) gcode += this->retract();
// use G1 because we rely on paths being straight (G0 may make round paths)
Lines lines = travel.lines();
for (Lines::const_iterator line = lines.begin(); line != lines.end(); ++line)
gcode += this->writer.travel_to_xy(this->point_to_gcode(line->b), comment);
return gcode;
}
bool
GCode::needs_retraction(const Polyline &travel, ExtrusionRole role)
{

1
xs/src/libslic3r/GCode.hpp
View file

@ -92,6 +92,7 @@ class GCode {
void apply_print_config(const PrintConfig &print_config);
void set_origin(const Pointf &pointf);
std::string preamble();
std::string travel_to(const Point &point, ExtrusionRole role, std::string comment);
bool needs_retraction(const Polyline &travel, ExtrusionRole role = erNone);
std::string retract(bool toolchange = false);
std::string unretract();

2
xs/xsp/GCode.xsp
View file

@ -157,6 +157,8 @@
void set_origin(Pointf* pointf)
%code{% THIS->set_origin(*pointf); %};
std::string preamble();
std::string travel_to(Point* point, ExtrusionRole role, std::string comment)
%code{% RETVAL = THIS->travel_to(*point, role, comment); %};
bool needs_retraction(Polyline* travel, ExtrusionRole role = erNone)
%code{% RETVAL = THIS->needs_retraction(*travel, role); %};
std::string retract(bool toolchange = false);