private void UpdateSelectionGizmo(WSceneView view) { if (!m_transformGizmo.Enabled && m_selectionList.Count > 0) { // Show the Transform Gizmo. m_transformGizmo.Enabled = true; m_transformGizmo.SetPosition(m_selectionList[0].Transform.Position); m_transformGizmo.SetLocalRotation(m_selectionList[0].Transform.Rotation); } else if (m_transformGizmo.Enabled && m_selectionList.Count == 0) { // Hide the Transform Gizmo. m_transformGizmo.Enabled = false; } if (!m_transformGizmo.Enabled) { return; } if (WInput.GetKeyDown(Key.Q) && !WInput.GetMouseButton(1)) { m_transformGizmo.SetMode(FTransformMode.None); } if (WInput.GetKeyDown(Key.W) && !WInput.GetMouseButton(1)) { m_transformGizmo.SetMode(FTransformMode.Translation); } if (WInput.GetKeyDown(Key.E) && !WInput.GetMouseButton(1)) { m_transformGizmo.SetMode(FTransformMode.Rotation); } if (WInput.GetKeyDown(Key.R) && !WInput.GetMouseButton(1)) { m_transformGizmo.SetMode(FTransformMode.Scale); } if (WInput.GetKeyDown(Key.OemOpenBrackets)) { m_transformGizmo.DecrementSize(); } if (WInput.GetKeyDown(Key.OemCloseBrackets)) { m_transformGizmo.IncrementSize(); } if (WInput.GetKeyDown(Key.OemTilde)) { if (m_transformGizmo.TransformSpace == FTransformSpace.World) { m_transformGizmo.SetTransformSpace(FTransformSpace.Local); } else { m_transformGizmo.SetTransformSpace(FTransformSpace.World); } UpdateGizmoTransform(); } if (WInput.GetMouseButtonDown(0)) { FRay mouseRay = view.ProjectScreenToWorld(WInput.MousePosition); if (m_transformGizmo.CheckSelectedAxes(mouseRay)) { m_transformGizmo.StartTransform(); } } if (WInput.GetMouseButtonUp(0)) { if (m_transformGizmo.IsTransforming) { // When we end let go of the gizmo, we want to make one last action which specifies that it is done, // so that the next gizmo move doesn't merge with the previous. WUndoCommand undoAction = CreateUndoActionForGizmo(true); if (undoAction != null) { m_world.UndoStack.Push(undoAction); } m_transformGizmo.EndTransform(); } } if (m_transformGizmo.IsTransforming) { FRay mouseRay = view.ProjectScreenToWorld(WInput.MousePosition); if (m_transformGizmo.TransformFromInput(mouseRay, view)) { WUndoCommand undoAction = CreateUndoActionForGizmo(false); if (undoAction != null) { m_world.UndoStack.Push(undoAction); } } } m_transformGizmo.UpdateForSceneView(view); }