From 39fb0f0ba24447c87f806d4f2c9d50de9380e295 Mon Sep 17 00:00:00 2001
From: Cedrik Schimschar <c.schimschar@fqsmedia.de>
Date: Tue, 8 Oct 2024 17:05:42 +0200
Subject: [PATCH] Add two modes of pico hand tracking to selectable export
 features

---
 .../main/cpp/export/pico_export_plugin.cpp    | 25 +++++++++++++++++++
 .../cpp/include/export/pico_export_plugin.h   |  5 ++++
 2 files changed, 30 insertions(+)

diff --git a/plugin/src/main/cpp/export/pico_export_plugin.cpp b/plugin/src/main/cpp/export/pico_export_plugin.cpp
index 429f6436..f8efc53b 100644
--- a/plugin/src/main/cpp/export/pico_export_plugin.cpp
+++ b/plugin/src/main/cpp/export/pico_export_plugin.cpp
@@ -70,6 +70,16 @@ PicoEditorExportPlugin::PicoEditorExportPlugin() {
 			PROPERTY_USAGE_DEFAULT,
 			pico::FACE_TRACKING_NONE_VALUE,
 			false);
+
+	_hand_tracking_option = _generate_export_option(
+			"pico_xr_features/hand_tracking",
+			"",
+			Variant::Type::INT,
+			PROPERTY_HINT_ENUM,
+			"No,Low frequency,High frequency (60Hz)",
+			PROPERTY_USAGE_DEFAULT,
+			pico::HAND_TRACKING_NONE_VALUE,
+			false);
 }
 
 void PicoEditorExportPlugin::_bind_methods() {}
@@ -83,6 +93,7 @@ TypedArray<Dictionary> PicoEditorExportPlugin::_get_export_options(const Ref<Edi
 	export_options.append(_get_vendor_toggle_option());
 	export_options.append(_eye_tracking_option);
 	export_options.append(_face_tracking_option);
+	export_options.append(_hand_tracking_option);
 
 	return export_options;
 }
@@ -133,6 +144,11 @@ String PicoEditorExportPlugin::_get_export_option_warning(const Ref<EditorExport
 		if (!record_audio && face_tracking == pico::FACE_TRACKING_HYBRID_VALUE) {
 			return "\"Hybrid face tracking\" requires \"Record Audio\" to be checked.\n";
 		}
+	} else if (option == "pico_xr_features/hand_tracking") {
+		int hand_tracking = _get_int_option(option, pico::HAND_TRACKING_NONE_VALUE);
+		if (!openxr_enabled && hand_tracking > pico::HAND_TRACKING_NONE_VALUE) {
+			return "\"Hand tracking\" requires \"XR Mode\" to be \"OpenXR\".\n";
+		}
 	}
 
 	return OpenXREditorExportPlugin::_get_export_option_warning(platform, option);
@@ -175,5 +191,14 @@ String PicoEditorExportPlugin::_get_android_manifest_application_element_content
 		contents += "        <meta-data tools:node=\"replace\" android:name=\"picovr.software.face_tracking\" android:value=\"1\" />\n";
 	}
 
+	//Hand tracking
+	int hand_tracking = _get_int_option("pico_xr_features/hand_tracking", pico::HAND_TRACKING_NONE_VALUE);
+	if (hand_tracking > pico::HAND_TRACKING_NONE_VALUE) {
+		contents += "        <meta-data tools:node=\"replace\" android:name=\"handtracking\" android:value=\"1\" />\n";
+	}
+	if (hand_tracking > pico::HAND_TRACKING_LOWFREQUENCY_VALUE) {
+		contents += "        <meta-data tools:node=\"replace\" android:name=\"Hand_Tracking_HighFrequency\" android:value=\"1\" />\n";
+	}
+
 	return contents;
 }
diff --git a/plugin/src/main/cpp/include/export/pico_export_plugin.h b/plugin/src/main/cpp/include/export/pico_export_plugin.h
index fbf2c22f..6bd332f6 100644
--- a/plugin/src/main/cpp/include/export/pico_export_plugin.h
+++ b/plugin/src/main/cpp/include/export/pico_export_plugin.h
@@ -43,6 +43,10 @@ static const int FACE_TRACKING_NONE_VALUE = 0;
 static const int FACE_TRACKING_FACEONLY_VALUE = 1;
 static const int FACE_TRACKING_LIPSYNCONLY_VALUE = 2;
 static const int FACE_TRACKING_HYBRID_VALUE = 3;
+
+static const int HAND_TRACKING_NONE_VALUE = 0;
+static const int HAND_TRACKING_LOWFREQUENCY_VALUE = 1;
+static const int HAND_TRACKING_HIGHFREQUENCY_VALUE = 2;
 } //namespace pico
 
 class PicoEditorExportPlugin : public OpenXREditorExportPlugin {
@@ -65,6 +69,7 @@ class PicoEditorExportPlugin : public OpenXREditorExportPlugin {
 
 	Dictionary _eye_tracking_option;
 	Dictionary _face_tracking_option;
+	Dictionary _hand_tracking_option;
 
 private:
 	bool _is_eye_tracking_enabled() const;