Recording enhancements

Fixes the GUI recording options and adds some new options, namely reconstruction snapshots and the recording options window. Alpha blending of the active channels in 2D snapshots has also been implemented.

applications/gui/src/media_panel.cpp

@@ -308,8 +308,10 @@ void MediaPanel::snapshot3D(ftl::gui::Camera *camera, const std::string &filenam
 		auto tagvalue = tag.value();
 		auto configurables = ftl::config::findByTag(tagvalue);
 		if (configurables.size() > 0) {
-			ftl::Configurable *configurable = configurables[0];
-			configurable->set("3D-snapshot", filename);
+			ftl::Configurable *configurable = ftl::config::find(configurables[0]->getID() + "/controls");
+			if (configurable) {
+				configurable->set("3D-snapshot", filename);
+			}
 		}
 	}
 }
@@ -320,11 +322,13 @@ void MediaPanel::startRecording3D(ftl::gui::Camera *camera, const std::string &f
 		auto tagvalue = tag.value();
 		auto configurables = ftl::config::findByTag(tagvalue);
 		if (configurables.size() > 0) {
-			ftl::Configurable *configurable = configurables[0];
-			configurable->set("record-name", filename);
-			configurable->set("record", true);
-			sceneRecording_ = std::optional<ftl::Configurable*>(configurable);
-			recordbutton_->setTextColor(nanogui::Color(1.0f,0.1f,0.1f,1.0f));
+			ftl::Configurable *configurable = ftl::config::find(configurables[0]->getID() + "/controls");
+			if (configurable) {
+				configurable->set("record-name", filename);
+				configurable->set("record", true);
+				sceneRecording_ = std::optional<ftl::Configurable*>(configurable);
+				recordbutton_->setTextColor(nanogui::Color(1.0f,0.1f,0.1f,1.0f));
+			}
 		}
 	}
 }