implement cv mod for Euclidean. Note, this is implemented as an override, not a sum mod.

examples/Gravity/Gravity.ino

@@ -58,10 +58,16 @@ void loop() {
     gravity.Process();
 
     // Read CVs and call the update function for each channel.
-    int cv1 = gravity.cv1.Read();
-    int cv2 = gravity.cv2.Read();
-    for (int i = 0; i < Gravity::OUTPUT_COUNT; i++) {
-        app.channel[i].applyCvMod(cv1, cv2);
+    if (!app.editing_param) {
+        int cv1 = gravity.cv1.Read();
+        int cv2 = gravity.cv2.Read();
+        for (int i = 0; i < Gravity::OUTPUT_COUNT; i++) {
+            // Only apply CV to the channel when the current channel has cv
+            // mod configured.
+            if (app.channel[i].isCvModActive()) {
+                app.channel[i].applyCvMod(cv1, cv2);
+            }
+        }
     }
 
     // Check for dirty state eligible to be saved.