add transparency toggle

.gitignore

@@ -1,3 +1,4 @@
 sinpin_vr
 .vscode/
 *.zip
+*.tar.xz

Makefile

@@ -1,18 +1,23 @@
-VERSION=v0.2.2
-CC := g++
-# CC := clang++
+VERSION=v0.2.3
+
+CXX := g++
+# CXX := clang++
+CPPFLAGS := -g -Wall -std=c++17
 LFLAGS := -lX11 -lXrandr -lXtst -lglfw -lGL
-LIBS := openvr/libopenvr_api.so
-SRC := src/*.cpp
-OUT := ./sinpin_vr
-CPPFLAGS := -Wall -std=c++17 $(LFLAGS) $(LIBS) $(SRC) -o $(OUT)
+OVR := -Llib -lopenvr_api
+TARGET := ./sinpin_vr
 
 build:
-	$(CC) -g $(CPPFLAGS)
+	$(CXX) src/*.cpp $(CPPFLAGS) $(LFLAGS) -Wl,-rpath,'$$ORIGIN/lib' $(OVR) -o $(TARGET)
 
 release: build
-	zip -r sinpin_vr-$(VERSION).zip sinpin_vr bindings openvr/libopenvr_api.so
+	mkdir -p sinpin-vr/lib
+	cp lib/libopenvr_api.so sinpin-vr/lib
+	cp -r bindings sinpin-vr
+	cp sinpin_vr sinpin-vr
+	tar -caf sinpin-vr-$(VERSION).tar.xz sinpin-vr
+	rm -rf sinpin-vr
 
 run: build
-	$(OUT)
+	$(TARGET)
 

bindings/action_manifest.json

@@ -56,6 +56,11 @@
 			"requirement": "suggested",
 			"type": "vector2"
 		},
+		{
+			"name": "/actions/cursor/in/toggle_transparent",
+			"requirement": "suggested",
+			"type": "boolean"
+		},
 		{
 			"name": "/actions/cursor/out/scroll_haptic",
 			"requirement": "suggested",
@@ -89,6 +94,7 @@
 			"/actions/cursor/in/mouse_right": "right mouse button",
 			"/actions/cursor/in/mouse_middle": "middle mouse button",
 			"/actions/cursor/in/scroll": "scroll",
+			"/actions/cursor/in/toggle_transparent": "toggle transparency",
 			"/actions/cursor/out/scroll_haptic": "scrolling haptic feedback"
 		}
 	]

src/app.cpp

@@ -10,6 +10,7 @@
 const VRMat root_start_pose = {{{1, 0, 0, 0}, {0, 1, 0, 0.8f}, {0, 0, 1, 0}}}; // 0.8m above origin
 
 const int FRAME_INTERVAL = 4; // number of update loops until the frame buffer is updated
+const float TRANSPARENCY = 0.6f;
 
 App::App()
 {
@@ -75,6 +76,8 @@ App::App()
 		assert(action_err == 0);
 		action_err = vr_input->GetActionHandle("/actions/cursor/in/scroll", &_input_handles.cursor.scroll);
 		assert(action_err == 0);
+		action_err = vr_input->GetActionHandle("/actions/cursor/in/toggle_transparent", &_input_handles.cursor.toggle_transparent);
+		assert(action_err == 0);
 		action_err = vr_input->GetActionHandle("/actions/cursor/out/scroll_haptic", &_input_handles.cursor.scroll_haptic);
 		assert(action_err == 0);
 		action_err = vr_input->GetActionSetHandle("/actions/main", &_input_handles.main_set);
@@ -193,6 +196,20 @@ void App::UpdateInput(float dtime)
 		}
 		UpdateUIVisibility();
 	}
+	if (IsInputJustPressed(_input_handles.cursor.toggle_transparent))
+	{
+		_transparent = !_transparent;
+		if (_transparent)
+		{
+			for (auto &panel : _panels)
+				panel.GetOverlay()->SetAlpha(TRANSPARENCY);
+		}
+		else
+		{
+			for (auto &panel : _panels)
+				panel.GetOverlay()->SetAlpha(1);
+		}
+	}
 	if (!_hidden)
 	{
 		if (IsInputJustPressed(_input_handles.main.reset))

src/app.h

@@ -33,6 +33,7 @@ struct InputHandles
 		vr::VRActionHandle_t mouse_middle;
 		vr::VRActionHandle_t scroll;
 		vr::VRActionHandle_t scroll_haptic;
+		vr::VRActionHandle_t toggle_transparent;
 	} cursor;
 	vr::VRActionSetHandle_t cursor_set;
 	struct
@@ -87,6 +88,7 @@ class App
 	Overlay _root_overlay;
 	std::vector<Panel> _panels;
 	bool _hidden = false;
+	bool _transparent = false;
 	bool _edit_mode = false;
 	std::optional<Controller *> _active_cursor;
 

src/util.h

@@ -1,6 +1,6 @@
 #pragma once
 
-#include "../openvr/openvr.h"
+#include "../lib/openvr.h"
 #include <glm/glm.hpp>
 
 typedef vr::TrackedDeviceIndex_t TrackerID;