internal void DrawHandle(CanvasDrawingSession win2d, DrawingPoint befor, bool atlast)
{
if (atlast && befor != null)
{
if (befor.IsHaveControlPoint)
{
var cp = befor.getControlPoint(false);
var pt = befor.getPoint();
win2d.DrawLine(pt, cp, Colors.Green);
DrawHandle_sub(win2d, cp.X, cp.Y, true, Colors.Green);
}
}
if (_haveControlPoint)
{
DrawHandle_sub(win2d, _point.X, _point.Y, true, Colors.Blue);
if (atlast)
{
var x = _point.X - (_controlPoint0.X - _point.X);
var y = _point.Y - (_controlPoint0.Y - _point.Y);
win2d.DrawLine(new Vector2(x, y), _controlPoint0, Colors.Green);
DrawHandle_sub(win2d, x, y, true, Colors.Green);
}
DrawHandle_sub(win2d, _controlPoint0.X, _controlPoint0.Y, true, Colors.Green);
}
else
{
DrawHandle_sub(win2d, _point.X, _point.Y, false, Colors.Blue);
}
}
internal void Reset()
{
if (_points != null)
{
_points.Clear();
}
statePress = false;
movePoint = null;
pressPoint = null;
_mainPage.EditCanvasInvalidate();
}
void MakePath(ref CanvasPathBuilder path, DrawingPoint befor, DrawingPoint target)
{
if (befor.IsHaveControlPoint || target.IsHaveControlPoint)
{
// canvasPathBuilder.AddLine(200, 200);
// canvasPathBuilder.AddCubicBezier(new Vector2(250, 300), new Vector2(250, 300), new Vector2(300, 200));
Vector2 controlpoint1 = befor.getControlPoint(false);
Vector2 controlpoint2 = target.getControlPoint(true);
path.AddCubicBezier(controlpoint1, controlpoint2, target.getPoint());
}
else
{
path.AddLine(target.getPoint());
}
}
internal void Draw(CanvasDrawingSession ds, ViewInfo viewInfo)
{
// var dt = DateTime.Now;
// System.Diagnostics.Debug.WriteLine(string.Format("Draw:time:{0}",dt.ToString("mm:ss:fff")));
// if (_points != null && _points.Count > 0)
if (_points != null && _points.Count > 0)
{
ds.Transform = new Matrix3x2(1, 0, 0, 1, viewInfo.OffsetX, viewInfo.OffsetY);
if (_points.Count > 1 || !statePress)
{
var canvasPathBuilder = new Microsoft.Graphics.Canvas.Geometry.CanvasPathBuilder(ds);
int index = 0;
DrawingPoint befor = _points[index];
DrawingPoint tp = null;
index++;
canvasPathBuilder.BeginFigure(befor.getPoint());
for (; index < _points.Count; index++)
{
tp = _points[index];
MakePath(ref canvasPathBuilder, befor, tp);
befor = tp;
tp = null;
}
canvasPathBuilder.EndFigure(CanvasFigureLoop.Open);
ds.DrawGeometry(CanvasGeometry.CreatePath(canvasPathBuilder), Colors.HotPink, 1);
}
{
DrawingPoint befor = null;
DrawingPoint tp = null;
for (int index = 0; index < _points.Count; index++)
{
tp = _points[index];
tp.DrawHandle(ds, befor, index == _points.Count - 1);
befor = tp;
}
}
}
}
/// <summary>
/// マウスイベント
/// </summary>
/// <param name="kind"></param>
/// <param name="pos"></param>
internal void PointerEvent(MouseEventKind kind, Vector2 pos)
{
if (_points == null)
{
_points = new List <DrawingPoint>();
}
pos = snapPos(pos);
switch (kind)
{
case MouseEventKind.Press:
{
_mainPage.FocusMove();
statePress = true;
System.Diagnostics.Debug.WriteLine("Event:Press");
if (movePoint != null)
{
pressPoint = movePoint;
movePoint = null;
}
else
{
pressPoint = new DrawingPoint(pos);
_points.Add(pressPoint);
}
currentPoint = pos;
Invalidate();
}
break;
case MouseEventKind.Move:
if (_points.Count > 0)
{
if (pos != currentPoint)
{
currentPoint = pos;
if (pressPoint != null)
{
pressPoint.UpdateKind(pos);
}
else
{
if (movePoint == null)
{
movePoint = new DrawingPoint(pos);
_points.Add(movePoint);
}
movePoint.SetPos(pos);
}
Invalidate();
}
}
break;
case MouseEventKind.Release:
System.Diagnostics.Debug.WriteLine("Event:Release");
if (statePress)
{
statePress = false;
pressPoint = null;
if (_points != null && _points.Count >= 3)
{
var p0 = _points[0].getPoint();
var p1 = _points[_points.Count - 1].getPoint();
if (p0 == p1)
{
_mainPage.CreatePath(_points, true);
CancelEvent();
}
}
Invalidate();
}
break;
case MouseEventKind.Double:
if (_points.Count > 2)
{
_points.RemoveAt(_points.Count - 1);
_mainPage.CreatePath(_points, false);
}
CancelEvent(); // _poits 等もクリア
break;
}
}
