From c1fc1c3fd83e741bb9ce5600c94471cbb629ae48 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Simon=20L=C3=BCbe=C3=9F?= <simon.luebess@gmail.com>
Date: Sun, 7 Feb 2021 13:00:17 +0100
Subject: [PATCH] Added extension functions for ImGui

---
 GlitchyEngine/src/ImGui/ImGuiExtension.bf | 18 +++++++++++++
 Sandbox/src/SandboxApp.bf                 | 33 ++++++++---------------
 2 files changed, 29 insertions(+), 22 deletions(-)
 create mode 100644 GlitchyEngine/src/ImGui/ImGuiExtension.bf

diff --git a/GlitchyEngine/src/ImGui/ImGuiExtension.bf b/GlitchyEngine/src/ImGui/ImGuiExtension.bf
new file mode 100644
index 0000000..ed31a70
--- /dev/null
+++ b/GlitchyEngine/src/ImGui/ImGuiExtension.bf
@@ -0,0 +1,18 @@
+using GlitchyEngine.Math;
+namespace ImGui
+{
+	extension ImGui
+	{
+		// TODO: Color-functions
+
+		public static bool ColorEdit3(char* label, ref ColorRGB col, ColorEditFlags flags = (ColorEditFlags) 0) => ColorEdit3Impl(label, *(float[3]*)&col, flags);
+		public static bool ColorEdit3(char* label, ref ColorRGBA col, ColorEditFlags flags = (ColorEditFlags) 0) => ColorEdit3Impl(label, *(float[3]*)&col, flags);
+
+		public static bool ColorEdit4(char* label, ref ColorRGBA col, ColorEditFlags flags = (ColorEditFlags) 0) => ColorEdit4Impl(label, *(float[4]*)&col, flags);
+
+        public static bool ColorPicker3(char* label, ref ColorRGB col, ColorEditFlags flags = (ColorEditFlags) 0) => ColorPicker3Impl(label, *(float[3]*)&col, flags);
+        public static bool ColorPicker3(char* label, ref ColorRGBA col, ColorEditFlags flags = (ColorEditFlags) 0) => ColorPicker3Impl(label, *(float[3]*)&col, flags);
+		
+		public static bool ColorPicker4(char* label, ref ColorRGBA col, ColorEditFlags flags = (ColorEditFlags) 0, float* ref_col = null) => ColorPicker4Impl(label, *(float[4]*)&col, flags, ref_col);
+	}
+}
diff --git a/Sandbox/src/SandboxApp.bf b/Sandbox/src/SandboxApp.bf
index d07a9f2..da6a89d 100644
--- a/Sandbox/src/SandboxApp.bf
+++ b/Sandbox/src/SandboxApp.bf
@@ -53,7 +53,6 @@ namespace Sandbox
 
 		Effect _effect ~ _?.ReleaseRef();
 
-		//Buffer<ColorRGBA> _cBuffer ~ _?.ReleaseRef();
 		ConstantBuffer _cBuffer ~ _?.ReleaseRef();
 
 		private Vector3 CircleCoord(float angle)
@@ -82,24 +81,11 @@ namespace Sandbox
 				VertexElement(.R32G32B32_Float, "POSITION"),
 				VertexElement(.R8G8B8A8_UNorm,  "COLOR"),
 				), _effect.VertexShader);
-			/*
-			_cBuffer = new Buffer<ColorRGBA>(Application.Get().Window.Context, .(0, .Constant, .Dynamic, .Write));
-			_cBuffer.Data = .White;
-			_cBuffer.Update();
-			*/
 
-			//_effect.PixelShader.Buffers.ReplaceBuffer("Constants", _cBuffer);
 
-			Buffer buffer = _effect.PixelShader.Buffers["Constants"];
-			_cBuffer = buffer as ConstantBuffer;
+			_cBuffer = _effect.PixelShader.Buffers["Constants"] as ConstantBuffer;
 			_cBuffer.AddRef();
 
-			if(_cBuffer != null)
-			{
-				_cBuffer["BaseColor"].SetData(ColorRGBA.Red);
-				_cBuffer.Update();
-			}
-
 			// Create hexagon
 			{
 				_geometryBinding = new GeometryBinding(Application.Get().Window.Context);
@@ -225,8 +211,7 @@ namespace Sandbox
 			Application.Get().Window.Context.SetViewport(Application.Get().Window.Context.SwapChain.BackbufferViewport);
 
 			Renderer.BeginScene(_camera);
-			
-			//_cBuffer.Data = .White;
+
 			_cBuffer["BaseColor"].SetData(ColorRGBA.White);
 			_cBuffer.Update();
 
@@ -237,11 +222,9 @@ namespace Sandbox
 			for(int y < 20)
 			{
 				if((x + y) % 2 == 0)
-					//_cBuffer.Data = .Red;
-					_cBuffer["BaseColor"].SetData(ColorRGBA.Red);
+					_cBuffer["BaseColor"].SetData(_squareColor0);
 				else
-					_cBuffer["BaseColor"].SetData(ColorRGBA.Blue);
-					//_cBuffer.Data = .Blue;
+					_cBuffer["BaseColor"].SetData(_squareColor1);
 
 				_cBuffer.Update();
 
@@ -250,9 +233,11 @@ namespace Sandbox
 			}
 
 			Renderer.EndScene();
-
 		}
 
+		ColorRGBA _squareColor0 = ColorRGBA.CornflowerBlue;
+		ColorRGBA _squareColor1;
+
 		public override void OnEvent(Event event)
 		{
 			EventDispatcher dispatcher = scope EventDispatcher(event);
@@ -264,6 +249,10 @@ namespace Sandbox
 		{
 			ImGui.Begin("Test");
 
+			ImGui.ColorEdit3("Square Color", ref _squareColor0);
+
+			_squareColor1 = ColorRGBA.White - _squareColor0;
+
 			ImGui.End();
 
 			return false;