protected override void OnMouseMove(MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
var shift = new Point(e.Location.X - mouseDown.X, e.Location.Y - mouseDown.Y);
mouseDown = e.Location;
//
if (dragged != null)
{
dragged.Drag(shift);//двигаем объект
}
else
{
offset = new Point(offset.X + shift.X, offset.Y + shift.Y);//сдвигаем канвас
}
Invalidate();
}
}
protected override void OnMouseMove(MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
var shift =
new PointF(e.Location.X - _mouseDown.X, e.Location.Y - _mouseDown.Y);
_mouseDown = e.Location;
if (_dragged != null)
{
_dragged.Drag(shift);
}
else
{
_offset = new PointF(_offset.X + shift.X, _offset.Y + shift.Y);
}
Invalidate();
}
var p = ToClient(e.Location);
var hitted = _nodes.FirstOrDefault(n => n.Hit(p));
Cursor = hitted != null ? Cursors.Hand : Cursors.Default;
}
void FixedUpdate()
{
if (!Input.GetMouseButtonDown(0))
{
return;
}
Camera mainCamera = Camera.main;
RaycastHit[] hits;
hits = Physics.RaycastAll(mainCamera.ScreenPointToRay(Input.mousePosition).origin,
mainCamera.ScreenPointToRay(Input.mousePosition).direction, 100,
Physics.DefaultRaycastLayers);
int minDragableLayer = (int)DragPriority.SceneObj;
int dragIndex = -1, minLayer = int.MaxValue;
for (int i = 0; i < hits.Length; ++i)
{
GameObject obj = hits[i].collider.gameObject;
//在允许拖拽的layer中，选择最小的那个
if (obj.layer >= minDragableLayer && obj.layer < minLayer)
{
minLayer = obj.layer;
dragIndex = i;
}
}
if (dragIndex > -1)
{
GameObject dragObj = hits[dragIndex].collider.gameObject;
IDragable dragable = dragObj.GetComponent <IDragable>();
if (dragable != null)
{
dragable.Drag();
}
}
}