From d6b409d0d98bacffb67e9f1f81731726f144a283 Mon Sep 17 00:00:00 2001
From: bubnikv <bubnikv@gmail.com>
Date: Thu, 14 Mar 2019 15:11:27 +0100
Subject: [PATCH] Update the SLA slices at the print preview once the index is
 calculated.

---
 src/libslic3r/PrintBase.hpp |  1 +
 src/libslic3r/SLAPrint.cpp  |  5 ++++-
 src/slic3r/GUI/Plater.cpp   | 10 ++++++++--
 3 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/src/libslic3r/PrintBase.hpp b/src/libslic3r/PrintBase.hpp
index e01b678a5..2d47d3567 100644
--- a/src/libslic3r/PrintBase.hpp
+++ b/src/libslic3r/PrintBase.hpp
@@ -272,6 +272,7 @@ public:
             NO_RELOAD_SCENE                 = 0,
             RELOAD_SCENE                    = 1 << 1,
             RELOAD_SLA_SUPPORT_POINTS       = 1 << 2,
+            RELOAD_SLA_PREVIEW              = 1 << 3,
         };
         // Bitmap of FlagBits
         unsigned int    flags;
diff --git a/src/libslic3r/SLAPrint.cpp b/src/libslic3r/SLAPrint.cpp
index b6c8aad13..52f1e032b 100644
--- a/src/libslic3r/SLAPrint.cpp
+++ b/src/libslic3r/SLAPrint.cpp
@@ -821,7 +821,7 @@ void SLAPrint::process()
 
     // We have the layer polygon collection but we need to unite them into
     // an index where the key is the height level in discrete levels (clipper)
-    auto index_slices = [ilhd](SLAPrintObject& po) {
+    auto index_slices = [this, ilhd](SLAPrintObject& po) {
         po.m_slice_index.clear();
         auto sih = LevelID(scale_(ilhd));
 
@@ -890,6 +890,9 @@ void SLAPrint::process()
                 sr.support_slices_idx = SLAPrintObject::SliceRecord::Idx(i);
             }
         }
+
+        // Using RELOAD_SLA_PREVIEW to tell the Plater to pass the update status to the 3D preview to load the SLA slices.
+        report_status(*this, -2, "", SlicingStatus::RELOAD_SLA_PREVIEW);
     };
 
     // Rasterizing the model objects, and their supports
diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index 64d189859..601c2ddb6 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -2434,8 +2434,10 @@ void Plater::priv::on_select_preset(wxCommandEvent &evt)
 
 void Plater::priv::on_slicing_update(SlicingStatusEvent &evt)
 {
-    this->statusbar()->set_progress(evt.status.percent);
-    this->statusbar()->set_status_text(_(L(evt.status.text)) + wxString::FromUTF8("…"));
+    if (evt.status.percent >= -1) {
+        this->statusbar()->set_progress(evt.status.percent);
+        this->statusbar()->set_status_text(_(L(evt.status.text)) + wxString::FromUTF8("…"));
+    }
     if (evt.status.flags & PrintBase::SlicingStatus::RELOAD_SCENE) {
         switch (this->printer_technology) {
         case ptFFF:
@@ -2453,6 +2455,10 @@ void Plater::priv::on_slicing_update(SlicingStatusEvent &evt)
         // Update SLA gizmo  (reload_scene calls update_gizmos_data)
         q->canvas3D()->reload_scene(true);
     }
+    if (evt.status.flags & PrintBase::SlicingStatus::RELOAD_SLA_PREVIEW) {
+        // Update the SLA preview
+        this->preview->reload_print();
+    }
 }
 
 void Plater::priv::on_slicing_completed(wxCommandEvent &)