namespace Yw.WpfUI.Hydro
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{
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/// <summary>
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/// 绘制小管网辅助类
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/// </summary>
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internal class DrawSmallHelper
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{
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/// <summary>
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///
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/// </summary>
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public DrawSmallHelper
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(
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HelixViewport3D viewport,
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DrawInitialHelper initialHelper,
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DrawHighlightHelper highlightHelper,
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DrawSelectionHelper selectionHelper,
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DrawMoudingHelper moudingHelper
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)
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{
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_viewport = viewport;
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_initialHelper = initialHelper;
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_highlightHelper = highlightHelper;
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_selectionHelper = selectionHelper;
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_moudingHelper = moudingHelper;
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Attach();
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}
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#region 事件集合
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/// <summary>
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/// 小管网改变事件
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/// </summary>
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public event Action<List<VisualDraw3D>> SmallChangedEvent;
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#endregion
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private readonly HelixViewport3D _viewport = null;//三维组件
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private readonly DrawInitialHelper _initialHelper = null;//初始化辅助类
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private readonly DrawHighlightHelper _highlightHelper = null;//高亮辅助类
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private readonly DrawSelectionHelper _selectionHelper = null;//选择辅助类
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private readonly DrawMoudingHelper _moudingHelper = null;//牟定辅助类
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private bool _isWorking = false;//是否工作中
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private bool? _lastHighlightEnabled = false;//上次高亮是否启用
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private bool? _lastSelectionEnabled = false;//上次选择是否启用
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private bool? _lastMoudingEnabled = false;//上次牟定是否启用
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private SmallInputL3d _input;//输入参数
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private SmallDraw3D _small3d;//小管网绘制件
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/// <summary>
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/// 是否初始化
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/// </summary>
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public bool Initialized
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{
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get { return _initialized; }
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private set { _initialized = value; }
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}
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private bool _initialized = false;
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//初始化
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private void Initialize()
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{
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if (!_initialHelper.Initialized)
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{
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return;
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}
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_initialized = true;
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}
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//处理初始化完成
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private void OnInitialCompleted()
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{
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Initialize();
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}
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/// <summary>
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/// 开始
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/// </summary>
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public bool Start(SmallInputL3d input)
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{
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if (!Initialized)
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{
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return false;
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}
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if (!input.Verify())
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{
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return false;
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}
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_initialHelper.RegistDrawStatus(eDrawStatusL3d.Small, End);
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_input = input;
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_lastHighlightEnabled = _highlightHelper.Enabled;
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_lastSelectionEnabled = _selectionHelper.Enabled;
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_lastMoudingEnabled = _moudingHelper.Enabled;
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_highlightHelper.Enabled = false;
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_selectionHelper.Enabled = false;
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_moudingHelper.Enabled = false;
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_isWorking = true;
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return true;
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}
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/// <summary>
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/// 结束
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/// </summary>
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public bool End()
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{
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if (!Initialized)
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{
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return false;
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}
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_isWorking = false;
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_highlightHelper.Enabled = _lastHighlightEnabled ?? false;
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_selectionHelper.Enabled = _lastSelectionEnabled ?? false;
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_moudingHelper.Enabled = _lastMoudingEnabled ?? false;
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if (_small3d != null)
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{
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_small3d.Close();
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_viewport.Children.Remove(_small3d);
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_small3d = null;
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}
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_initialHelper.ResetDrawStatus();
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return true;
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}
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//处理鼠标按下
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private void OnMouseDown(object sender, MouseButtonEventArgs e)
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{
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if (!_isWorking)
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{
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return;
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}
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}
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//处理鼠标移动
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private void OnMouseMove(object sender, MouseEventArgs e)
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{
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if (!_isWorking)
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{
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return;
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}
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var pt = e.GetPosition(_viewport);
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pt = new Point(pt.X + 3, pt.Y - 3);
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var sp = _viewport.Viewport.UnProject(pt);
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if (!sp.HasValue)
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{
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return;
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}
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if (_small3d == null)
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{
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var input = _input.CloneC();
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var drawMode = _initialHelper.GetDrawMode();
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_small3d = new SmallDraw3D(input, drawMode);
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_viewport.Children.Add(_small3d);
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}
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_small3d.UpdateTransform(sp.Value);
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_moudingHelper.Mouding(pt, _small3d.Visual3ds);
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}
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//处理鼠标弹起
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private void OnMouseUp(object sender, MouseButtonEventArgs e)
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{
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if (!_isWorking)
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{
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return;
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}
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if (e.ChangedButton != MouseButton.Left)
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{
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return;
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}
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if (_small3d == null)
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{
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return;
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}
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var pt = e.GetPosition(_viewport);
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var snapNode = _moudingHelper.SnapNearestNode(pt, _small3d.Visual3ds);
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if (snapNode != null)
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{
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var allVisual3ds = _small3d.Close(snapNode);
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allVisual3ds.ForEach(x =>
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{
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_initialHelper.AddVisual3D(x);
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});
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_viewport.Children.Remove(_small3d);
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_small3d = null;
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OnSmallChanged(allVisual3ds);
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}
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}
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//处理小管网改变
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private void OnSmallChanged(List<VisualDraw3D> visual3ds)
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{
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if (visual3ds == null || visual3ds.Count < 1)
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{
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return;
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}
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this.SmallChangedEvent?.Invoke(visual3ds);
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}
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//附加
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private void Attach()
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{
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_initialHelper.InitialCompletedEvent += OnInitialCompleted;
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_viewport.MouseDown += OnMouseDown;
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_viewport.MouseUp += OnMouseUp;
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_viewport.MouseMove += OnMouseMove;
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}
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//分离
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private void Detach()
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{
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_initialHelper.InitialCompletedEvent -= OnInitialCompleted;
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_viewport.MouseDown -= OnMouseDown;
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_viewport.MouseUp -= OnMouseUp;
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_viewport.MouseMove -= OnMouseMove;
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}
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/// <summary>
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/// 释放
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/// </summary>
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public void Dispose()
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{
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Detach();
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}
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}
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}
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