OnRender()

void Spices::ImguiGizmos::OnRender ( )

overridevirtual

This interface is called On SlateRenderer Render.

Set Gizmo Projection type.

Use Window Draw List.

Locating Gizmo.

Instnce empty camera.

Fill in camera.

Iter by view.

Draw Editor ViewManipulate.

Todo

fix uncorrect manipulate.

Set New Camera transform.

Draw Editor Gizmo.

Get Selected Entity.

Get Transform Component.

Get Entity Model Matrix.

Snapping.

Gozmo Manipulater.

Add to Entity Transform.

Split Channels from Matrix.

Set Gizmo Projection type.

Use Window Draw List.

Locating Gizmo.

Instnce empty camera.

Fill in camera.

Iter by view.

Draw Editor ViewManipulate.

Todo

fix uncorrect manipulate.

Set New Camera transform.

Draw Editor Gizmo.

Get Selected Entity.

Get Transform Component.

Get Entity Model Matrix.

Snapping.

Gozmo Manipulater.

Add to Entity Transform.

Split Channels from Matrix.

Implements Spices::ImguiSlate.

Definition at line 21 of file ImguiGizmos.cpp.

    {
        SPICES_PROFILE_ZONE;
 
        {
            SPICES_PROFILE_ZONEN("Set ImGuizmo Draw Info");
 
            ImGuizmo::SetOrthographic(false);
 
            ImGuizmo::SetDrawlist();
 
            ImGuizmo::SetRect(
                m_Owner->GetPanelPos().x,
                m_Owner->GetPanelPos().y,
                m_Owner->GetPanelSize().x,
                m_Owner->GetPanelSize().y
            );
        }
 
        Entity CameraEntity;
        glm::mat4 viewMat = glm::mat4(1.0f);
        glm::mat4 projectionMat = glm::mat4(1.0f);
 
        {
            SPICES_PROFILE_ZONEN("Get Camera Matrix");
 
            m_FrameInfo.m_World->ViewComponent<CameraComponent>([&](auto e, auto& tComp){
 
                auto& transComp = m_FrameInfo.m_World->GetComponent<TransformComponent>(e);
 
                if (tComp.IsActive())
                {
                    viewMat = glm::inverse(transComp.GetModelMatrix());
                    projectionMat = tComp.GetCamera()->GetPMatrix();
 
                    CameraEntity = Entity(e, m_FrameInfo.m_World.get());
                    return true;
                }
 
                return false;
            });
        }
 
        {
            SPICES_PROFILE_ZONEN("ImGuizmo::ViewManipulate");
 
            ImGuizmo::ViewManipulate(
                glm::value_ptr(viewMat),
                8.0f,
                ImVec2(m_Owner->GetPanelPos().x, m_Owner->GetPanelPos().y + m_Owner->GetPanelSize().y - 96),
                ImVec2(96, 96),
                0x10101010
            );
        }
 
        //{
        //    SPICES_PROFILE_ZONEN("DecomposeTransform");
 
        //    /**
        //    * @brief Split Channels from Matrix.
        //    */
        //    glm::vec3 translation, rotation, scale;
        //    DecomposeTransform(glm::inverse(viewMat), translation, rotation, scale);
        //}
 
        {
            SPICES_PROFILE_ZONEN("Draw Editor Gizmo");
 
            if (m_FrameInfo.m_PickEntityID.size() > 0 && bEnableGizmo)
            {
                Entity entity(
                    static_cast<entt::entity>(*m_FrameInfo.m_PickEntityID.end_k()),
                    m_FrameInfo.m_World.get()
                );
 
                auto& tc = entity.GetComponent<TransformComponent>();
 
                glm::mat4 model = tc.GetModelMatrix();
 
                bool snap = Input::IsKeyPressed(Key::LeftControl);
                float snapValue = 0.5f; // Snap to 0.5m for translation/scale
                // Snap to 45 degrees for rotation
                if (m_GizmoType == ImGuizmo::OPERATION::ROTATE)
                {
                    snapValue = 45.0F;
                }
 
                float snapValues[3] = { snapValue, snapValue ,snapValue };
 
                {
                    SPICES_PROFILE_ZONEN("ImGuizmo::Manipulate");
 
                    ImGuizmo::Manipulate(
                        glm::value_ptr(viewMat),
                        glm::value_ptr(projectionMat),
                        (ImGuizmo::OPERATION)m_GizmoType,
                        ImGuizmo::LOCAL,
                        glm::value_ptr(model),
                        nullptr, snap ? snapValues : nullptr
                    );
                }
 
                {
                    SPICES_PROFILE_ZONEN("Add Transform to Manipulatd Entity");
 
                    if (ImGuizmo::IsUsing())
                    {
                        glm::vec3 translation, rotation, scale;
                        DecomposeTransform(model, translation, rotation, scale);
                        rotation = { glm::degrees(rotation.x), glm::degrees(rotation.y), glm::degrees(rotation.z) };
 
 
                        glm::vec3 deltaRotation = rotation - tc.GetRotation();
                        tc.SetPosition(translation);
                        tc.SetRotation(tc.GetRotation() + deltaRotation);
                        tc.SetScale(scale);
 
                        FrameInfo::Get().m_World->Mark(World::FrushStableFrame | World::NeedUpdateTLAS);
                    }
                }
            }
        }
    }

References bEnableGizmo, Spices::World::FrushStableFrame, Spices::FrameInfo::Get(), Spices::Input::IsKeyPressed(), Spices::Key::LeftControl, Spices::ImguiSlate::m_FrameInfo, and Spices::World::NeedUpdateTLAS.