Add generic function to get first camera

Author: Brandon

lib/MMJ_.jar

@@ -240,6 +240,17 @@ public <T extends DeviceBase> T getDevice(final String deviceName) {
         return (T) deviceMap_.get(deviceName);
     }
 
+    public DeviceBase getFirstImagingCamera() {
+         final LightSheetDeviceManager adapter = model_.devices().getDeviceAdapter();
+         if (adapter.getNumSimultaneousCameras() > 1) {
+            return deviceMap_.get("Imaging1Camera1");
+         } else if (adapter.getNumImagingPaths() > 1) {
+            return deviceMap_.get("Imaging1Camera");
+         } else {
+            return deviceMap_.get("ImagingCamera");
+         }
+    }
+
     public DeviceBase getImagingCamera() {
         return deviceMap_.get("ImagingCamera");
     }

src/main/java/org/micromanager/lightsheetmanager/model/DeviceManager.java

@@ -532,15 +532,24 @@ public void close() {
             }
             cameraNames = cameraDeviceNames.toArray(new String[0]);
         } else {
-            if (acqSettings_.volumeSettings().numViews() > 1) {
-                cameraNames = new String[]{
+            if (model_.devices().getDeviceAdapter().getNumSimultaneousCameras() > 1) {
+               // multiple simultaneous cameras
+               cameraNames = new String[]{
+                     model_.devices().getDevice("Imaging1Camera1").getDeviceName(),
+                     model_.devices().getDevice("Imaging2Camera2").getDeviceName()
+               };
+            } else {
+               // standard camera setup
+               if (acqSettings_.volumeSettings().numViews() > 1) {
+                  cameraNames = new String[]{
                         model_.devices().getDevice("Imaging1Camera").getDeviceName(),
                         model_.devices().getDevice("Imaging2Camera").getDeviceName()
-                };
-            } else {
-                cameraNames = new String[]{
+                  };
+               } else {
+                  cameraNames = new String[]{
                         model_.devices().getDevice("ImagingCamera").getDeviceName()
-                };
+                  };
+               }
             }
         }