From 05cb1db02021fc7e348f8f558051d5df5a042418 Mon Sep 17 00:00:00 2001
From: brunoherbelin <bruno.herbelin@gmail.com>
Date: Wed, 17 Mar 2021 22:03:19 +0100
Subject: [PATCH] Minor UX improvement when mixing group rotation does not have
 the expected effect

---
 MixingGroup.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/MixingGroup.cpp b/MixingGroup.cpp
index d0904be..64fb59a 100644
--- a/MixingGroup.cpp
+++ b/MixingGroup.cpp
@@ -181,6 +181,7 @@ void MixingGroup::update (float)
             angle -= glm::orientedAngle( glm::normalize(pos_second), glm::vec2(1.f, 0.f) );
             dist /= glm::length( pos_second );
 
+            int numactions = 0;
             auto it = sources_.begin();
             for (; it != sources_.end(); it++){
 
@@ -193,6 +194,7 @@ void MixingGroup::update (float)
                     (*it)->group(View::MIXING)->translation_.x = vec.x;
                     (*it)->group(View::MIXING)->translation_.y = vec.y;
                     (*it)->touch();
+                    numactions++;
                 }
 
                 // update point
@@ -200,6 +202,9 @@ void MixingGroup::update (float)
             }
             // update path
             lines_->changePath(p);
+            // no source was rotated? better action is thus to grab
+            if (numactions<1)
+                update_action_ = ACTION_GRAB_ALL;
         }
 
         // done