From fab0f999515ccf06487f68dd0d58e2a9d6dfa2d3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Simon=20L=C3=BCbe=C3=9F?= <simon.luebess@gmail.com>
Date: Tue, 28 Sep 2021 21:56:51 +0200
Subject: [PATCH] Added guizmo

Translation is broken for some reason
---
 .../src/EditWindows/SceneViewportWindow.bf    | 42 ++++++++++++++++++-
 GlitchyEditor/src/Editor.bf                   |  2 +-
 GlitchyEditor/src/EditorLayer.bf              | 10 ++---
 GlitchyEngine/src/ImGui/ImGuiLayer.bf         |  2 +
 4 files changed, 49 insertions(+), 7 deletions(-)

diff --git a/GlitchyEditor/src/EditWindows/SceneViewportWindow.bf b/GlitchyEditor/src/EditWindows/SceneViewportWindow.bf
index d2da850..6caadb6 100644
--- a/GlitchyEditor/src/EditWindows/SceneViewportWindow.bf
+++ b/GlitchyEditor/src/EditWindows/SceneViewportWindow.bf
@@ -3,11 +3,16 @@ using ImGui;
 using GlitchyEngine.Renderer;
 using GlitchyEngine.Math;
 using GlitchyEngine;
+using GlitchyEngine.World;
+using ImGuizmo;
 
 namespace GlitchyEditor.EditWindows
 {
 	class SceneViewportWindow
 	{
+		private Editor _editor;
+		public Camera _camera;
+
 		public const String s_WindowTitle = "Scene";
 
 		private bool _open = true;
@@ -41,8 +46,9 @@ namespace GlitchyEditor.EditWindows
 			}
 		}
 
-		public this()
+		public this(Editor editor)
 		{
+			_editor = editor;
 		}
 
 		private ImGui.Vec2 oldViewportSize;
@@ -76,6 +82,40 @@ namespace GlitchyEditor.EditWindows
 			{
 				ImGui.Image(_renderTarget, viewportSize);
 			}
+
+			if(_editor.SelectedEntities.Count > 0)
+			{
+				ImGuizmo.SetDrawlist();
+
+				var entity = _editor.SelectedEntities.Back;
+
+				var transformCmp = _editor.World.GetComponent<TransformComponent>(entity);
+
+				var transform = transformCmp.LocalTransform;
+
+				var view = _camera.View;
+				var projection = _camera.Projection;
+
+				var v = ImGui.GetWindowPos();
+				var cntMin = ImGui.GetWindowContentRegionMin();
+
+				v.x += cntMin.x;
+				v.y += cntMin.y;
+				
+				ImGuizmo.SetRect(v.x, v.y, viewportSize.x, viewportSize.y);
+
+				Color c = .(0,0,0,255);
+				
+				//ImGuizmo.DrawCubes((.)&view, (.)&projection, (.)&transform, 1);
+				ImGuizmo.Manipulate((.)&view, (.)&projection, .TRANSLATE, .LOCAL, (.)&transform);
+
+				Matrix mat = .Identity;
+
+				ImGuizmo.DrawGrid((.)&view, (.)&projection, (.)&mat, 10);
+
+				transformCmp.LocalTransform = transform;
+				//ImGuizmo.ViewManipulate((.)&view, , .TRANSLATE, .LOCAL, (.)&transform);
+			}
 			
 			ImGui.End();
 
diff --git a/GlitchyEditor/src/Editor.bf b/GlitchyEditor/src/Editor.bf
index 5cd49d7..8c07677 100644
--- a/GlitchyEditor/src/Editor.bf
+++ b/GlitchyEditor/src/Editor.bf
@@ -13,7 +13,7 @@ namespace GlitchyEditor
 		
 		private EntityHierarchyWindow _entityHierarchyWindow = new .(this) ~ delete _;
 		private ComponentEditWindow _componentEditWindow = new .(this) ~ delete _;
-		private SceneViewportWindow _sceneViewportWindow = new .() ~ delete _;
+		private SceneViewportWindow _sceneViewportWindow = new .(this) ~ delete _;
 
 		private List<Entity> _selectedEntities = new .() ~ delete _;
 
diff --git a/GlitchyEditor/src/EditorLayer.bf b/GlitchyEditor/src/EditorLayer.bf
index 0cae339..b46cf83 100644
--- a/GlitchyEditor/src/EditorLayer.bf
+++ b/GlitchyEditor/src/EditorLayer.bf
@@ -1,13 +1,12 @@
-using GlitchyEditor.EditWindows;
+using System;
+using ImGui;
 using GlitchyEngine;
+using GlitchyEditor.EditWindows;
 using GlitchyEngine.Events;
 using GlitchyEngine.ImGui;
 using GlitchyEngine.Math;
 using GlitchyEngine.Renderer;
 using GlitchyEngine.World;
-using ImGui;
-using System;
-using GlitchyEngine.Renderer.Text;
 
 namespace GlitchyEditor
 {
@@ -88,9 +87,10 @@ namespace GlitchyEditor
 									Application.Get().Window.Context.SwapChain.BackbufferViewport.Height);
 			_cameraController.CameraPosition = .(0, 0, -5);
 			_cameraController.TranslationSpeed = 10;
-			
 
 			_editor.[Friend]CreateEntityWithTransform();
+
+			_editor.SceneViewportWindow._camera = _cameraController.Camera;
 		}
 		
 		public override void Update(GameTime gameTime)
diff --git a/GlitchyEngine/src/ImGui/ImGuiLayer.bf b/GlitchyEngine/src/ImGui/ImGuiLayer.bf
index 4934783..a39bd44 100644
--- a/GlitchyEngine/src/ImGui/ImGuiLayer.bf
+++ b/GlitchyEngine/src/ImGui/ImGuiLayer.bf
@@ -1,6 +1,7 @@
 using System;
 using ImGui;
 using GlitchyEngine.Events;
+using ImGuizmo;
 
 using internal ImGui;
 
@@ -184,6 +185,7 @@ namespace GlitchyEngine.ImGui
 			ImGuiImplDX11.NewFrame();
 			ImGuiImplWin32.NewFrame();
 			ImGui.NewFrame();
+			ImGuizmo.BeginFrame();
 		}
 
 		bool showDemo = true;