From 73635e085591953d2d5eb055718c0215395cca7e Mon Sep 17 00:00:00 2001
From: PavelMikus <pavel.mikus.mail@seznam.cz>
Date: Thu, 9 Feb 2023 13:36:42 +0100
Subject: [PATCH] Lower the curled height tolerance from 0.3 to 0.1 mm of the
 curled overhang avoidance algorithm.

---
 src/libslic3r/SupportSpotsGenerator.cpp | 10 +++++-----
 src/libslic3r/SupportSpotsGenerator.hpp |  1 +
 2 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/src/libslic3r/SupportSpotsGenerator.cpp b/src/libslic3r/SupportSpotsGenerator.cpp
index 33dce04a25..e5f58f91e3 100644
--- a/src/libslic3r/SupportSpotsGenerator.cpp
+++ b/src/libslic3r/SupportSpotsGenerator.cpp
@@ -954,7 +954,7 @@ std::tuple<SupportPoints, PartialObjects> check_stability(const PrintObject *po,
             float unchecked_dist = params.min_distance_between_support_points + 1.0f;
 
             for (const ExtrusionLine &line : current_slice_ext_perims_lines) {
-                if ((unchecked_dist + line.len < params.min_distance_between_support_points && line.curled_up_height < 0.3f) ||
+                if ((unchecked_dist + line.len < params.min_distance_between_support_points && line.curled_up_height < params.curling_tolerance_limit) ||
                     line.len < EPSILON) {
                     unchecked_dist += line.len;
                 } else {
@@ -1077,14 +1077,14 @@ void estimate_supports_malformations(SupportLayerPtrs &layers, float flow_width,
         }
 
         for (const ExtrusionLine &line : current_layer_lines) {
-            if (line.curled_up_height > 0.3f) {
+            if (line.curled_up_height > params.curling_tolerance_limit) {
                 l->malformed_lines.push_back(Line{Point::new_scale(line.a), Point::new_scale(line.b)});
             }
         }
 
 #ifdef DEBUG_FILES
         for (const ExtrusionLine &line : current_layer_lines) {
-            if (line.curled_up_height > 0.3f) {
+            if (line.curled_up_height > params.curling_tolerance_limit) {
                 Vec3f color = value_to_rgbf(-EPSILON, l->height * params.max_curled_height_factor, line.curled_up_height);
                 fprintf(debug_file, "v %f %f %f  %f %f %f\n", line.b[0], line.b[1], l->print_z, color[0], color[1], color[2]);
             }
@@ -1150,14 +1150,14 @@ void estimate_malformations(LayerPtrs &layers, const Params &params)
         }
 
         for (const ExtrusionLine &line : current_layer_lines) {
-            if (line.curled_up_height > 0.3f) {
+            if (line.curled_up_height > params.curling_tolerance_limit) {
                 l->malformed_lines.push_back(Line{Point::new_scale(line.a), Point::new_scale(line.b)});
             }
         }
 
 #ifdef DEBUG_FILES
         for (const ExtrusionLine &line : current_layer_lines) {
-            if (line.curled_up_height > 0.3f) {
+            if (line.curled_up_height > params.curling_tolerance_limit) {
                 Vec3f color = value_to_rgbf(-EPSILON, l->height * params.max_curled_height_factor, line.curled_up_height);
                 fprintf(debug_file, "v %f %f %f  %f %f %f\n", line.b[0], line.b[1], l->print_z, color[0], color[1], color[2]);
             }
diff --git a/src/libslic3r/SupportSpotsGenerator.hpp b/src/libslic3r/SupportSpotsGenerator.hpp
index dd58c9133f..018b856e0c 100644
--- a/src/libslic3r/SupportSpotsGenerator.hpp
+++ b/src/libslic3r/SupportSpotsGenerator.hpp
@@ -44,6 +44,7 @@ struct Params
 
     const std::pair<float,float> malformation_distance_factors = std::pair<float, float> { 0.5, 1.1 };
     const float max_curled_height_factor = 10.0f;
+    const float curling_tolerance_limit = 0.1f;
 
     const float min_distance_between_support_points = 3.0f; //mm
     const float support_points_interface_radius = 1.5f; // mm