From bf8fcabb29836321dc5252439cd1b4ead0e2537f Mon Sep 17 00:00:00 2001
From: Enrico Turri <enricoturri@seznam.cz>
Date: Thu, 31 Oct 2019 17:03:33 +0100
Subject: [PATCH] ENABLE_THUMBNAIL_GENERATOR -> Use orthographic camera when
 rendering thumbnails

---
 src/slic3r/GUI/Camera.cpp     | 2 +-
 src/slic3r/GUI/GLCanvas3D.cpp | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/slic3r/GUI/Camera.cpp b/src/slic3r/GUI/Camera.cpp
index b5aac32ed..94d673e82 100644
--- a/src/slic3r/GUI/Camera.cpp
+++ b/src/slic3r/GUI/Camera.cpp
@@ -26,7 +26,7 @@ namespace GUI {
 const double Camera::DefaultDistance = 1000.0;
 #if ENABLE_THUMBNAIL_GENERATOR
 const double Camera::DefaultZoomToBoxMarginFactor = 1.0;
-const double Camera::DefaultZoomToVolumesMarginFactor = 1.1;
+const double Camera::DefaultZoomToVolumesMarginFactor = 1.0;
 #endif // ENABLE_THUMBNAIL_GENERATOR
 double Camera::FrustrumMinZRange = 50.0;
 double Camera::FrustrumMinNearZ = 100.0;
diff --git a/src/slic3r/GUI/GLCanvas3D.cpp b/src/slic3r/GUI/GLCanvas3D.cpp
index a49c772d3..4e36739ac 100644
--- a/src/slic3r/GUI/GLCanvas3D.cpp
+++ b/src/slic3r/GUI/GLCanvas3D.cpp
@@ -3627,6 +3627,7 @@ static void render_volumes_in_thumbnail(const GLVolumePtrs& volumes, ThumbnailDa
     }
 
     Camera camera;
+    camera.set_type(Camera::Ortho);
     camera.zoom_to_volumes(visible_volumes, thumbnail_data.width, thumbnail_data.height);
     camera.apply_viewport(0, 0, thumbnail_data.width, thumbnail_data.height);
     camera.apply_view_matrix();