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Corrections to math. Threads are not always rectangles with semicircles. Better calculation of overlap.

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This commit is contained in:
Alessandro Ranellucci 2011-12-17 19:52:34 +01:00
parent cd0fd80a69
commit 1e6ecd9eab
13 changed files with 62 additions and 41 deletions
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27
lib/Slic3r/Config.pm
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@ -373,15 +373,34 @@ sub validate {
} else {
# here we calculate a sane default by matching the flow speed (at the nozzle)
# and the feed rate
$Slic3r::flow_width = (($Slic3r::nozzle_diameter**2) * PI + ($Slic3r::layer_height**2) * (4 - PI)) / (4 * $Slic3r::layer_height);
my $volume = ($Slic3r::nozzle_diameter**2) * PI/4;
my $shape_threshold = $Slic3r::nozzle_diameter * $Slic3r::layer_height
+ ($Slic3r::layer_height**2) * PI/4;
if ($volume >= $shape_threshold) {
# rectangle with semicircles at the ends
$Slic3r::flow_width = (($Slic3r::nozzle_diameter**2) * PI + ($Slic3r::layer_height**2) * (4 - PI)) / (4 * $Slic3r::layer_height);
} else {
# rectangle with squished semicircles at the ends
$Slic3r::flow_width = $Slic3r::nozzle_diameter * ($Slic3r::nozzle_diameter/$Slic3r::layer_height - 4/PI + 1);
}
my $max_flow_width = $Slic3r::nozzle_diameter * 1.2;
my $min_flow_width = $Slic3r::nozzle_diameter * 1.05;
my $max_flow_width = $Slic3r::nozzle_diameter * 1.4;
$Slic3r::flow_width = $max_flow_width if $Slic3r::flow_width > $max_flow_width;
$Slic3r::flow_width = $Slic3r::nozzle_diameter * 1.05
if $Slic3r::flow_width < $Slic3r::nozzle_diameter;
$Slic3r::flow_width = $min_flow_width if $Slic3r::flow_width < $min_flow_width;
}
if ($Slic3r::flow_width >= ($Slic3r::nozzle_diameter + $Slic3r::layer_height)) {
# rectangle with shrunk at the ends
$Slic3r::min_flow_spacing = $Slic3r::flow_width - $Slic3r::layer_height * (1 - PI/4);
} else {
# rectangle with shrunk semicircles at the ends
$Slic3r::min_flow_spacing = $Slic3r::flow_width * (1 - PI/4) + $Slic3r::nozzle_diameter * PI/4;
}
$Slic3r::flow_spacing = $Slic3r::flow_width - $Slic3r::overlap_factor * ($Slic3r::flow_width - $Slic3r::min_flow_spacing);
Slic3r::debugf "Flow width = $Slic3r::flow_width\n";
Slic3r::debugf "Flow spacing = $Slic3r::flow_spacing\n";
# --perimeters
die "Invalid value for --perimeters\n"