public override void CanvasTool_MouseMove(object sender, MouseEventArgs e)
{
if (_canvas == null || CurrentLayer() == null || !CurrentLayer().IsLine)
{
return;
}
if (!IsWorking())
{
return;
}
_tempPoint = e.Location;
OECPVertex vtx = new OECPVertex(_tempPoint.X, _tempPoint.Y);
var tpEd = _canvas.C2I(vtx);
if (_ptCollection.Count == 2)
{
_ptCollection[1] = tpEd;
}
else
{
_ptCollection.Add(tpEd);
}
_canvas.RepaintCanvas();
}
public override void CanvasTool_MouseDown(object sender, MouseEventArgs e)
{
if (_canvas == null || CurrentLayer() == null || !CurrentLayer().IsLine)
{
return;
}
if (WorkStopped())
{
return;
}
OECPVertex vtx = new OECPVertex(e.Location.X, e.Location.Y);
if (IsWaiting())
{
if (e.Button != MouseButtons.Left)
{
return;
}
SetBusy();
var st = _canvas.C2I(vtx);
_ptCollection.Add(st);
_canvas.VertexLayer().AddElement(st);
_canvas.RepaintCanvas();
return;
}
if (IsWorking())
{
SetWaiting();
_canvas.FreezeRightClickMenu(true);
if (e.Button == MouseButtons.Left)
{
var edPt = _canvas.C2I(vtx);
_ptCollection.Add(edPt);
_canvas.VertexLayer().AddElements(_ptCollection);
var line = new OECPLine(_ptCollection[0], _ptCollection[1]);
CurrentLayer().AddElement(line);
_ptCollection.Clear();
_canvas.RepaintCanvas();
}
if (e.Button == MouseButtons.Right)
{
var vtxLayer = _canvas.VertexLayer();
if (vtxLayer == null)
{
return;
}
vtx = _ptCollection[0];
vtxLayer.DeleteVertex(vtx);
_ptCollection.Clear();
_canvas.RepaintCanvas();
}
}
}
//将初始矩形的坐标投影到当前画布状态
private OECPVertex I2C(OECPVertex vtx)
{
var t = (OECPVertex)vtx.Clone();;
var w2dw1 = _square.Width / _dSquare.Width;
var cUnitVector = new PointF(_dSquare.Location.X - vtx.X, _dSquare.Location.Y - vtx.Y);
var x0 = _square.Location.X - cUnitVector.X * w2dw1;
var y0 = _square.Location.Y - cUnitVector.Y * w2dw1;
t.X = x0;
t.Y = y0;
return(t);
}
//获得初始正方形上对应的点
private OECPVertex C2I(OECPVertex vtx)
{
var tVtx = (OECPVertex)vtx.Clone();
var w2dw1 = _square.Width / _dSquare.Width;
var cUnitVector = new PointF(_square.Location.X - vtx.X, _square.Location.Y - vtx.Y);
var x0 = _dSquare.Location.X - cUnitVector.X / w2dw1;
var y0 = _dSquare.Location.Y - cUnitVector.Y / w2dw1;
tVtx.X = x0;
tVtx.Y = y0;
return(tVtx);
}
public static bool VertexOnLine(OECPVertex vtx, List <OECPLayer> lineLayers, ref OECPVertex projVtx)
{
foreach (OECPLayer lineLayer in lineLayers)
{
foreach (OECPElement ele in lineLayer.LayerElements())
{
var line = (OECPLine)ele;
if (line.Distance(vtx) <= vtx.BufferTolerance)
{
projVtx = line.GetProjectVertex(vtx);
return(true);
}
}
}
return(false);
}
public bool VertexOnLine(OECPVertex vtx, ref OECPVertex projVtx)
{
var lst = new List <OECPLayer>();
foreach (OECPLayer layer in Layers)
{
if (!layer.IsLine)
{
continue;
}
if (!layer.IsVisible)
{
continue;
}
lst.Add(layer);
}
return(CanvasUtil.VertexOnLine(vtx, lst, ref projVtx));
}
bool VertexAtBoundary(OECPVertex vtx, RectangleF square)
{
var leftLine = new OECPLine(new OECPVertex(square.Left, square.Top), new OECPVertex(square.Left, square.Bottom), true);
var rightLine = new OECPLine(new OECPVertex(square.Right, square.Top), new OECPVertex(square.Right, square.Bottom), true);
var topLine = new OECPLine(new OECPVertex(square.Left, square.Top), new OECPVertex(square.Right, square.Top), true);
var botLine = new OECPLine(new OECPVertex(square.Left, square.Bottom), new OECPVertex(square.Right, square.Bottom), true);
bool onLeft = leftLine.VertexOnLine(vtx);
if (onLeft)
{
_projVtx = leftLine.GetProjectVertex(vtx);
return(true);
}
bool onRight = rightLine.VertexOnLine(vtx);
if (onRight)
{
_projVtx = rightLine.GetProjectVertex(vtx);
return(true);
}
bool onTop = topLine.VertexOnLine(vtx);
if (onTop)
{
_projVtx = topLine.GetProjectVertex(vtx);
return(true);
}
bool onBot = botLine.VertexOnLine(vtx);
if (onBot)
{
_projVtx = botLine.GetProjectVertex(vtx);
return(true);
}
return(false);
}
public override void CanvasTool_Paint(object sender, PaintEventArgs e)
{
if (_canvas == null || CurrentLayer() == null || !CurrentLayer().IsLine)
{
return;
}
if (!IsWorking())
{
return;
}
OECPVertex vtx = new OECPVertex(_tempPoint.X, _tempPoint.Y);
var stPt = _canvas.I2C(_ptCollection[0]);
if (_ptCollection.Count == 1)
{
DrawShape(stPt.X, stPt.Y, e.Graphics);
}
if (_ptCollection.Count == 2)
{
DrawShape(stPt.X, stPt.Y, vtx.X, vtx.Y, e.Graphics);
}
}
OECPVertex ICanvasSignal.C2I(OECPVertex cVtx)
{
return(C2I(cVtx));
}
OECPVertex ICanvasSignal.I2C(OECPVertex iVtx)
{
return(I2C(iVtx));
}