From e06f53b11eae74f00209d136032f7a5ac9e43e90 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?L=27=C3=A9lectron=20rare?=
 <108685187+electron-rare@users.noreply.github.com>
Date: Mon, 18 May 2026 17:48:10 +0200
Subject: [PATCH] fix: pause sphere auto-rotation while dragging

Auto-rotation ran unconditionally, so it kept spinning during a
camera-orbit drag. Accumulate a frame-rate-independent angle only
when the mouse is not pressed.
---
 oscope-sphere/src/ofApp.cpp | 6 +++++-
 oscope-sphere/src/ofApp.h   | 1 +
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/oscope-sphere/src/ofApp.cpp b/oscope-sphere/src/ofApp.cpp
index 3708b9c..f8d46ec 100644
--- a/oscope-sphere/src/ofApp.cpp
+++ b/oscope-sphere/src/ofApp.cpp
@@ -30,6 +30,10 @@ void ofApp::setup() {
 void ofApp::update() {
     if (frozen_) return;
 
+    // Auto-rotation advances only when the mouse is not orbiting the camera.
+    if (!ofGetMousePressed())
+        spin_ += 6.0f * static_cast<float>(ofGetLastFrameTime());
+
     if (demoMode_) {
         demo_.next(buf1_, buf2_, 8192);
     } else {
@@ -54,7 +58,7 @@ void ofApp::update() {
 void ofApp::draw() {
     cam_.begin();
     ofPushMatrix();
-    ofRotateYDeg(ofGetElapsedTimef() * 6.0f);
+    ofRotateYDeg(spin_);
     if (layerA_) sphere_.drawSkin();
     if (layerC_) sphere_.drawPoints();
     if (layerB_) rings_.draw();
diff --git a/oscope-sphere/src/ofApp.h b/oscope-sphere/src/ofApp.h
index 84304b5..49e35d6 100644
--- a/oscope-sphere/src/ofApp.h
+++ b/oscope-sphere/src/ofApp.h
@@ -37,5 +37,6 @@ private:
     bool  layerC_   = true;
     int   colormap_ = 0;
     float scopeSr_  = 16.0e6f;
+    float spin_     = 0.0f;
     std::string statusText_;
 };