Fix of #8455 - Incorrect scale in ExtrusionLine::simplify() prevented removing vertices between collinear and nearly collinear lines.

1 files changed, 4 insertions, 4 deletions

diff --git a/src/libslic3r/Arachne/utils/ExtrusionLine.cpp b/src/libslic3r/Arachne/utils/ExtrusionLine.cpp
index 4ddbb01d1..6a6ac0f0f 100644
--- a/src/libslic3r/Arachne/utils/ExtrusionLine.cpp
+++ b/src/libslic3r/Arachne/utils/ExtrusionLine.cpp
@@ -112,11 +112,11 @@ void ExtrusionLine::simplify(const int64_t smallest_line_segment_squared, const
         //h = L / b           [divide by b]
         //h^2 = (L / b)^2     [square it]
         //h^2 = L^2 / b^2     [factor the divisor]
-        const int64_t height_2 = int64_t(double(area_removed_so_far) * double(area_removed_so_far) / double(base_length_2));
-        coord_t weighted_average_width;
+        const auto    height_2 = int64_t(double(area_removed_so_far) * double(area_removed_so_far) / double(base_length_2));
+        coord_t       weighted_average_width;
         const int64_t extrusion_area_error = calculateExtrusionAreaDeviationError(previous, current, next, weighted_average_width);
-        if ((height_2 <= 1 //Almost exactly colinear (barring rounding errors).
-             && Line::distance_to_infinite(current.p, previous.p, next.p) <= 1.) // Make sure that height_2 is not small because of cancellation of positive and negative areas
+        if ((height_2 <= scaled<coord_t>(0.001) //Almost exactly colinear (barring rounding errors).
+             && Line::distance_to_infinite(current.p, previous.p, next.p) <= scaled<double>(0.001)) // Make sure that height_2 is not small because of cancellation of positive and negative areas
             // We shouldn't remove middle junctions of colinear segments if the area changed for the C-P segment is exceeding the maximum allowed
              && extrusion_area_error <= maximum_extrusion_area_deviation)
         {