From 3c3e409d31ee6b3ce5b3931afc39f4d6928d073c Mon Sep 17 00:00:00 2001
From: imn <imn@opencascade.com>
Date: Tue, 25 Aug 2015 14:20:13 +0300
Subject: [PATCH] Fix field of view in perspective mode

---
 src/OCCViewer/OCCViewer_ViewWindow.cxx | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/OCCViewer/OCCViewer_ViewWindow.cxx b/src/OCCViewer/OCCViewer_ViewWindow.cxx
index 215d09dae..19203799f 100755
--- a/src/OCCViewer/OCCViewer_ViewWindow.cxx
+++ b/src/OCCViewer/OCCViewer_ViewWindow.cxx
@@ -1652,14 +1652,18 @@ void OCCViewer_ViewWindow::onProjectionType( QAction* theAction )
     if (theAction == toolMgr()->action( OrthographicId )) {
       myModel->setProjectionType(Orthographic);
       aCamera->SetProjectionType ( Graphic3d_Camera::Projection_Orthographic );
+      aCamera->SetFOVy(45.0);
     }
     else if (theAction == toolMgr()->action( PerspectiveId )) {
       myModel->setProjectionType(Perspective);
       aCamera->SetProjectionType ( Graphic3d_Camera::Projection_Perspective );
+      aCamera->SetFOVy(30.0);
     }
 #if OCC_VERSION_LARGE > 0x06090000
-    if (toolMgr()->action( StereoId )->isChecked())
+    if (toolMgr()->action( StereoId )->isChecked()) {
       aCamera->SetProjectionType ( Graphic3d_Camera::Projection_Stereo );
+      aCamera->SetFOVy(30.0);
+    }
 #endif
     aView3d->Redraw();
     onViewFitAll();
-- 
2.39.2