add ImGuizmo

Editor/Editor/EditorLayer.cpp

@@ -4,6 +4,9 @@
 
 #include "EditorLayer.h"
 
+#include "ImGuizmo.h"
+#include "Prism/Core/KeyCodes.h"
+
 namespace Prism
 {
     enum class PropertyFlag
@@ -201,6 +204,9 @@ namespace Prism
 
         m_Light.Direction = {-0.5f, -0.5f, 1.0f};
         m_Light.Radiance  = {1.0f, 1.0f, 1.0f};
+
+
+		m_Transform = glm::scale(glm::mat4(1.0f), glm::vec3(m_MeshScale));
     }
 
     void EditorLayer::OnDetach()
@@ -305,7 +311,7 @@ namespace Prism
             {
                 if (m_Mesh)
                 {
-                    m_Mesh->Render(deltaTime, scale(mat4(1.0f), vec3(m_MeshScale)), m_MeshMaterial);
+                    m_Mesh->Render(deltaTime, m_Transform, m_MeshMaterial);
                 }
             }
 
@@ -678,9 +684,20 @@ namespace Prism
         auto viewportSize = ImGui::GetContentRegionAvail();
         m_Framebuffer->Resize((uint32_t)viewportSize.x, (uint32_t)viewportSize.y);
         m_FinalPresentBuffer->Resize((uint32_t)viewportSize.x, (uint32_t)viewportSize.y);
-        m_Camera.SetProjectionMatrix(glm::perspectiveFov(glm::radians(45.0f), viewportSize.x, viewportSize.y, 0.1f,
-                                                         10000.0f));
+        m_Camera.SetProjectionMatrix(glm::perspectiveFov(glm::radians(45.0f), viewportSize.x, viewportSize.y, 0.1f, 10000.0f));
         ImGui::Image((ImTextureRef)m_FinalPresentBuffer->GetColorAttachmentRendererID(), viewportSize, {0, 1}, {1, 0});
+
+        // ImGuizmo
+        if (m_GizmoType != -1)
+        {
+            const float rw = (float)ImGui::GetWindowWidth();
+            const float rh = (float)ImGui::GetWindowHeight();
+            ImGuizmo::SetOrthographic(false);
+            ImGuizmo::SetDrawlist();
+            ImGuizmo::SetRect(ImGui::GetWindowPos().x, ImGui::GetWindowPos().y, rw, rh);
+            ImGuizmo::Manipulate(glm::value_ptr(m_Camera.GetViewMatrix()), glm::value_ptr(m_Camera.GetProjectionMatrix()), (ImGuizmo::OPERATION)m_GizmoType, ImGuizmo::LOCAL, glm::value_ptr(m_Transform));
+        }
+
         ImGui::End();
         ImGui::PopStyleVar();
 
@@ -702,6 +719,27 @@ namespace Prism
 
     void EditorLayer::OnEvent(Event& e)
     {
-        Layer::OnEvent(e);
+		EventDispatcher dispatcher(e);
+		dispatcher.Dispatch<KeyPressedEvent>(HZ_BIND_EVENT_FN(EditorLayer::OnKeyPressedEvent));
+    }
+
+    bool EditorLayer::OnKeyPressedEvent(KeyPressedEvent& e)
+    {
+        switch (e.GetKeyCode())
+        {
+        case PM_KEY_Q:
+            m_GizmoType = -1;
+            break;
+        case PM_KEY_W:
+            m_GizmoType = ImGuizmo::OPERATION::TRANSLATE;
+            break;
+        case PM_KEY_E:
+            m_GizmoType = ImGuizmo::OPERATION::ROTATE;
+            break;
+        case PM_KEY_R:
+            m_GizmoType = ImGuizmo::OPERATION::SCALE;
+            break;
+        }
+        return false;
     }
 }

Editor/Editor/EditorLayer.h

@@ -21,6 +21,9 @@ public:
     virtual void OnImGuiRender() override;
     virtual void OnEvent(Event& e) override;
 
+private:
+    bool OnKeyPressedEvent(KeyPressedEvent& e);
+
 private:
     float m_ClearColor[4];
 
@@ -54,6 +57,10 @@ private:
     Ref<Shader> m_Shader;
     Ref<Shader> m_PBRShader;
 
+    // Imguizmo
+    int m_GizmoType = -1; // -1 = no gizmo
+    glm::mat4 m_Transform;
+
 
     struct AlbedoInput
     {