Use support headDiameter from config

(generate support config when diameter is known)
+ overhangs sample curve is static inside of code(do not use svg config file more)
+ Move island configuration behinde macro

src/libslic3r/SLA/SupportIslands/SampleConfigFactory.cpp

@@ -52,8 +52,7 @@ bool SampleConfigFactory::verify(SampleConfig &cfg) {
     return res;
 }
 
-SampleConfig SampleConfigFactory::create(float support_head_diameter_in_mm)
-{        
+SampleConfig SampleConfigFactory::create(float support_head_diameter_in_mm) {
     SampleConfig result;
     result.head_radius = static_cast<coord_t>(scale_(support_head_diameter_in_mm/2));
     
@@ -99,6 +98,30 @@ SampleConfig SampleConfigFactory::create(float support_head_diameter_in_mm)
     return result;
 }
 
+SampleConfig SampleConfigFactory::apply_density(const SampleConfig &current, float density) {
+    if (is_approx(density, 1.f))
+        return current;
+    if (density < .1f)
+        density = .1f; // minimal 10%
+
+    SampleConfig result = current;                                                        // copy
+    result.thin_max_distance = static_cast<coord_t>(current.thin_max_distance / density); // linear
+    result.thick_inner_max_distance = static_cast<coord_t>( // controll radius - quadratic
+        std::sqrt(sqr((double) current.thick_inner_max_distance) / density)
+    );
+    result.thick_outline_max_distance = static_cast<coord_t>(
+        current.thick_outline_max_distance / density
+    ); // linear
+    // result.head_radius                       .. no change
+    // result.minimal_distance_from_outline     .. no change
+    // result.maximal_distance_from_outline     .. no change
+    // result.max_length_for_one_support_point  .. no change
+    // result.max_length_for_two_support_points .. no change
+    verify(result);
+    return result;
+}
+
+#ifdef USE_ISLAND_GUI_FOR_SETTINGS
 std::optional<SampleConfig> SampleConfigFactory::gui_sample_config_opt;
 SampleConfig &SampleConfigFactory::get_sample_config() {
     // init config
@@ -109,22 +132,6 @@ SampleConfig &SampleConfigFactory::get_sample_config() {
 }
 
 SampleConfig SampleConfigFactory::get_sample_config(float density) {
-    const SampleConfig &current = get_sample_config();
-    if (is_approx(density, 1.f))
-        return current;
-    if (density < .1f)
-        density = .1f; // minimal 10%
-
-    SampleConfig result = current; // copy
-    result.thin_max_distance = static_cast<coord_t>(current.thin_max_distance / density); // linear
-    result.thick_inner_max_distance = static_cast<coord_t>( // controll radius - quadratic
-        std::sqrt(sqr((double)current.thick_inner_max_distance) / density));
-    result.thick_outline_max_distance = static_cast<coord_t>(current.thick_outline_max_distance / density); // linear
-    // result.head_radius                       .. no change
-    // result.minimal_distance_from_outline     .. no change
-    // result.maximal_distance_from_outline     .. no change
-    // result.max_length_for_one_support_point  .. no change
-    // result.max_length_for_two_support_points .. no change
-    verify(result);
-    return result;
+    return apply_density(get_sample_config(), density);
 }
+#endif // USE_ISLAND_GUI_FOR_SETTINGS

src/libslic3r/SLA/SupportIslands/SampleConfigFactory.hpp

@@ -5,6 +5,8 @@
 #include "SampleConfig.hpp"
 #include "libslic3r/PrintConfig.hpp"
 
+//#define USE_ISLAND_GUI_FOR_SETTINGS
+
 namespace Slic3r::sla {
 
 /// <summary>
@@ -17,7 +19,8 @@ public:
 
     static bool verify(SampleConfig &cfg);
     static SampleConfig create(float support_head_diameter_in_mm);
-
+    static SampleConfig apply_density(const SampleConfig& cfg, float density);
+#ifdef USE_ISLAND_GUI_FOR_SETTINGS
 private:
     // TODO: REMOVE IT. Do not use in production
     // Global variable to temporary set configuration from GUI into SLA print steps
@@ -34,6 +37,7 @@ public:
     /// 1.1f.. extend count of supports (approx to 110%) </param>
     /// <returns>Scaled configuration</returns>
     static SampleConfig get_sample_config(float density);
+#endif // USE_ISLAND_GUI_FOR_SETTINGS
 };
 } // namespace Slic3r::sla
 #endif // slic3r_SLA_SuppotstIslands_SampleConfigFactory_hpp_

src/libslic3r/SLAPrintSteps.cpp

@@ -543,7 +543,11 @@ void SLAPrint::Steps::prepare_for_generate_supports(SLAPrintObject &po) {
     using namespace sla;
     std::vector<ExPolygons> slices = po.get_model_slices(); // copy
     const std::vector<float> &heights = po.m_model_height_levels;
-    const PrepareSupportConfig &prepare_cfg = SampleConfigFactory::get_sample_config().prepare_config;
+#ifdef USE_ISLAND_GUI_FOR_SETTINGS
+    const PrepareSupportConfig &prepare_cfg = SampleConfigFactory::get_sample_config(po.config().support_head_front_diameter).prepare_config; // use configuration edited by GUI
+#else // USE_ISLAND_GUI_FOR_SETTINGS
+    const PrepareSupportConfig prepare_cfg; // use Default values of the configuration
+#endif // USE_ISLAND_GUI_FOR_SETTINGS
     ThrowOnCancel cancel = [this]() { throw_if_canceled(); };
 
     // scaling for the sub operations
@@ -750,8 +754,14 @@ void SLAPrint::Steps::support_points(SLAPrintObject &po)
     }
     
     // copy current configuration for sampling islands
+#ifdef USE_ISLAND_GUI_FOR_SETTINGS
+    // use static variable to propagate data from GUI
     config.island_configuration = SampleConfigFactory::get_sample_config(config.density_relative);
-    
+#else // USE_ISLAND_GUI_FOR_SETTINGS
+    config.island_configuration = SampleConfigFactory::apply_density(
+            SampleConfigFactory::create(config.head_diameter), config.density_relative);
+#endif // USE_ISLAND_GUI_FOR_SETTINGS
+
     // scaling for the sub operations
     double d = objectstep_scale * OBJ_STEP_LEVELS[slaposSupportPoints] / 100.0;
     double init = current_status();

src/slic3r/GUI/Gizmos/GLGizmoSlaSupports.cpp

@@ -785,18 +785,20 @@ RENDER_AGAIN:
         ImVec4 light_gray{0.4f, 0.4f, 0.4f, 1.0f};
         ImGui::TextColored(light_gray, "%s", stats.c_str());
 
-        //ImGui::Separator(); // START temporary debug
-        //ImGui::Text("Between delimiters is temporary GUI");
-        //sla::SampleConfig &sample_config = sla::SampleConfigFactory::get_sample_config();
-        //if (float overhang_sample_distance = sample_config.prepare_config.discretize_overhang_step;
-        //    m_imgui->slider_float("overhang discretization", &overhang_sample_distance, 2e-5f, 10.f, "%.2f mm")){
-        //    sample_config.prepare_config.discretize_overhang_step = overhang_sample_distance;
-        //} else if (ImGui::IsItemHovered())
-        //    ImGui::SetTooltip("Smaller will slow down. Step for discretization overhang outline for test of support need");        
-        //
-        //draw_island_config();
-        //ImGui::Text("Distribution depends on './resources/data/sla_support.svg'\ninstruction for edit are in file");
-        //ImGui::Separator();
+#ifdef USE_ISLAND_GUI_FOR_SETTINGS
+        ImGui::Separator();
+        ImGui::Text("Between delimiters is temporary GUI");
+        sla::SampleConfig &sample_config = sla::SampleConfigFactory::get_sample_config();
+        if (float overhang_sample_distance = sample_config.prepare_config.discretize_overhang_step;
+            m_imgui->slider_float("overhang discretization", &overhang_sample_distance, 2e-5f, 10.f, "%.2f mm")){
+            sample_config.prepare_config.discretize_overhang_step = overhang_sample_distance;
+        } else if (ImGui::IsItemHovered())
+            ImGui::SetTooltip("Smaller will slow down. Step for discretization overhang outline for test of support need");        
+        
+        draw_island_config();
+        ImGui::Text("Distribution depends on './resources/data/sla_support.svg'\ninstruction for edit are in file");
+        ImGui::Separator();
+#endif // USE_ISLAND_GUI_FOR_SETTINGS
 
         if (ImGuiPureWrap::button(m_desc.at("auto_generate")))
             auto_generate();
@@ -884,6 +886,7 @@ RENDER_AGAIN:
         m_parent.set_as_dirty();
 }
 
+#ifdef USE_ISLAND_GUI_FOR_SETTINGS
 void GLGizmoSlaSupports::draw_island_config() {
     if (!ImGui::TreeNode("Support islands:"))
         return; // no need to draw configuration for islands
@@ -1014,6 +1017,7 @@ void GLGizmoSlaSupports::draw_island_config() {
     // end of tree node
     ImGui::TreePop();
 }
+#endif // USE_ISLAND_GUI_FOR_SETTINGS
 
 bool GLGizmoSlaSupports::on_is_activable() const
 {

tests/sla_print/sla_supptgen_tests.cpp

@@ -596,6 +596,9 @@ TEST_CASE("Disable visualization", "[hide]")
 #ifdef STORE_ISLAND_ISSUES
     CHECK(false);
 #endif // STORE_ISLAND_ISSUES
+#ifdef USE_ISLAND_GUI_FOR_SETTINGS
+    CHECK(false);
+#endif // USE_ISLAND_GUI_FOR_SETTINGS
     CHECK(is_uniform_support_island_visualization_disabled());
 }