Added very barebones renderer to facilitate clearing and setting the background. Added ImPlot for the desired plotting functionality.

.gitmodules

@@ -8,3 +8,6 @@
 [submodule "Navigator/vendor/glfw"]
 	path = Navigator/vendor/glfw
 	url = https://github.com/gwm17/glfw.git
+[submodule "Navigator/vendor/implot"]
+	path = Navigator/vendor/implot
+	url = https://github.com/gwm17/implot.git

Navigator/src/Navigator/Application.cpp

@@ -1,4 +1,6 @@
 #include "Application.h"
+#include "Renderer/Renderer.h"
+#include "Renderer/RenderCommand.h"
 
 namespace Navigator {
 
@@ -57,6 +59,9 @@ namespace Navigator {
 		while(m_runFlag)
 		{
 
+			RenderCommand::SetClearColor(m_bckgnd_color);
+			RenderCommand::Clear();
+
 			for(auto layer : m_stack)
 				layer->OnUpdate();
 

Navigator/src/Navigator/Application.h

@@ -35,6 +35,8 @@ namespace Navigator {
 		ImGuiLayer* m_imgui_layer;
 		bool m_runFlag;
 
+		float m_bckgnd_color[4] = {0.1, 0.1, 0.1, 1.0};
+		
 		static Application* s_instance;
 	};
 

Navigator/src/Navigator/ImGui/ImGuiLayer.cpp

@@ -3,6 +3,7 @@
 #include "Navigator/NavCore.h"
 
 #include "imgui.h"
+#include "implot.h"
 #include "backends/imgui_impl_opengl3.h"
 #include "backends/imgui_impl_glfw.h"
 
@@ -23,7 +24,11 @@ namespace Navigator {
 	void ImGuiLayer::OnAttach()
 	{
 		IMGUI_CHECKVERSION();
+
+		NAV_INFO("Creating ImGui Context...");
+
 		ImGui::CreateContext();
+		ImPlot::CreateContext();
 
 		ImGuiIO& io = ImGui::GetIO();
 		io.ConfigFlags |= ImGuiConfigFlags_NavEnableKeyboard;
@@ -45,12 +50,15 @@ namespace Navigator {
 
 		ImGui_ImplGlfw_InitForOpenGL(window, true);
 		ImGui_ImplOpenGL3_Init("#version 410");
+
+		NAV_INFO("ImGui Finished initializing.");
 	}
 
 	void ImGuiLayer::OnDetach()
 	{
 		ImGui_ImplOpenGL3_Shutdown();
 		ImGui_ImplGlfw_Shutdown();
+		ImPlot::DestroyContext();
 		ImGui::DestroyContext();
 	}
 
@@ -86,5 +94,6 @@ namespace Navigator {
 	{
 		static bool show = true;
 		ImGui::ShowDemoWindow(&show);
+		ImPlot::ShowDemoWindow();
 	}
 }

Navigator/src/Navigator/Renderer/RenderCommand.cpp

@@ -0,0 +1,6 @@
+#include "RenderCommand.h"
+#include "Platform/OpenGL/OpenGLRendererAPI.h"
+
+namespace Navigator {
+	RendererAPI* RenderCommand::s_api = new OpenGLRendererAPI();
+}

Navigator/src/Navigator/Renderer/RenderCommand.h

@@ -0,0 +1,19 @@
+#ifndef RENDER_COMMAND_H
+#define RENDER_COMMAND_H
+
+#include "RendererAPI.h"
+
+namespace Navigator {
+
+	class RenderCommand
+	{
+	public:
+		inline static void SetClearColor(const float* color_array) { s_api->SetClearColor(color_array); }
+		inline static void Clear() { s_api->Clear(); }
+	private:
+		static RendererAPI* s_api;
+	};
+
+}
+
+#endif

Navigator/src/Navigator/Renderer/Renderer.h

@@ -0,0 +1,18 @@
+#ifndef RENDERER_H
+#define RENDERER_H
+
+#include "RendererAPI.h"
+#include "RenderCommand.h"
+
+namespace Navigator {
+
+	class Renderer
+	{
+	public:
+
+		static inline RendererAPI::API GetAPI() { return RendererAPI::GetAPI(); }
+
+	};
+}
+
+#endif

Navigator/src/Navigator/Renderer/RendererAPI.cpp

@@ -0,0 +1,5 @@
+#include "RendererAPI.h"
+
+namespace Navigator {
+	RendererAPI::API RendererAPI::s_api = RendererAPI::API::OpenGL;
+}

Navigator/src/Navigator/Renderer/RendererAPI.h

@@ -0,0 +1,26 @@
+#ifndef RENDERER_API_H
+#define RENDERER_API_H
+
+namespace Navigator {
+
+	class RendererAPI
+	{
+	public:
+		enum class API
+		{
+			None = 0,
+			OpenGL = 1
+		};
+
+		virtual void Clear() = 0;
+		virtual void SetClearColor(const float* color_array) = 0;
+
+		inline static API GetAPI() { return s_api; }
+
+	private:
+		static API s_api;
+	};
+
+}
+
+#endif

Navigator/src/Platform/OpenGL/OpenGLRendererAPI.cpp

@@ -0,0 +1,17 @@
+#include "OpenGLRendererAPI.h"
+
+#include "glad/glad.h"
+
+namespace Navigator {
+
+	void OpenGLRendererAPI::Clear()
+	{
+		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+	}
+
+	void OpenGLRendererAPI::SetClearColor(const float* color_array)
+	{
+		glClearColor(color_array[0], color_array[1], color_array[2], color_array[3]);
+	}
+
+}

Navigator/src/Platform/OpenGL/OpenGLRendererAPI.h

@@ -0,0 +1,17 @@
+#ifndef OPENGL_RENDERER_API_H
+#define OPENGL_RENDERER_API_H
+
+#include "Navigator/Renderer/RendererAPI.h"
+
+namespace Navigator {
+
+	class OpenGLRendererAPI : public RendererAPI
+	{
+	public:
+		virtual void Clear() override;
+		virtual void SetClearColor(const float* color_array) override;
+	};
+
+}
+
+#endif

Navigator/vendor/implot

@@ -0,0 +1 @@
+Subproject commit 4fcc6e01aca406ef17d5a2dabdcbc9e1bd962c0d

navigator.sublime-project

@@ -7,6 +7,6 @@
 	],
 	"settings":
 	{
-		"SublimeLinter.linters.g++.args": ["-c","-Wall","-fsyntax-only","-std=c++17","-include${folder}/Navigator/src/navpch.h","-INavigator/src/", "-INavigator/src/Navigator/","-INavigator/vendor/spdlog/include", "-INavigator/vendor/glfw/include/","-INavigator/vendor/glad/include","-INavigator/vendor/imgui"]
+		"SublimeLinter.linters.g++.args": ["-c","-Wall","-fsyntax-only","-std=c++17","-include${folder}/Navigator/src/navpch.h","-INavigator/src/", "-INavigator/src/Navigator/","-INavigator/vendor/spdlog/include", "-INavigator/vendor/glfw/include/","-INavigator/vendor/glad/include","-INavigator/vendor/imgui","-INavigator/vendor/implot"]
 	}
 }

premake5.lua

@@ -14,6 +14,7 @@ IncludeDirs ={}
 IncludeDirs["glfw"] = "Navigator/vendor/glfw/include"
 IncludeDirs["ImGui"] = "Navigator/vendor/imgui"
 IncludeDirs["glad"] = "Navigator/vendor/glad/include"
+IncludeDirs["ImPlot"] = "Navigator/vendor/implot"
 
 include "Navigator/vendor/glfw"
 include "Navigator/vendor/imgui"
@@ -41,14 +42,17 @@ project "Navigator"
 		"%{prj.name}/vendor/spdlog/include/",
 		"%{IncludeDirs.glfw}",
 		"%{IncludeDirs.ImGui}",
-		"%{IncludeDirs.glad}"
+		"%{IncludeDirs.glad}",
+		"%{IncludeDirs.ImPlot}"
 	}
 	
 	filter {}
 
 	files {
 		"%{prj.name}/src/**.h",
-		"%{prj.name}/src/**.cpp"
+		"%{prj.name}/vendor/implot/*.h",
+		"%{prj.name}/src/**.cpp",
+		"%{prj.name}/vendor/implot/*.cpp"
 	}
 
 	defines {
@@ -116,6 +120,7 @@ project "NavProject"
 		"Navigator/src",
 		"Navigator/src/Navigator",
 		"Navigator/vendor/spdlog/include/",
+		"Navigator/vendor/implot/",
 		"Navigator/vendor"
 	}