private void drawCircle(DrawContext dc, DrawPen pen)
{
if (PointList.Count == 0)
{
return;
}
if (PointList.Count == 1)
{
dc.Drawing.DrawCross(pen, PointList[0].vector, 2);
if (PointList[0].Selected)
{
dc.Drawing.DrawSelectedPoint(PointList[0].vector, dc.GetPen(DrawTools.PEN_SELECT_POINT));
}
return;
}
Vector3d normal = CadMath.Normal(PointList[0].vector, PointList[2].vector, PointList[1].vector);
CircleExpander.Draw(PointList[0], PointList[1], PointList[2], 32, dc, pen);
double size = dc.DevSizeToWoldSize(4);
dc.Drawing.DrawCross(pen, PointList[0].vector, size);
}
public override void DrawTemp(DrawContext dc, CadVertex tp, DrawPen pen)
{
if (PointList.Count <= 0)
{
return;
}
CadVertex cp = PointList[0];
CadVertex a = tp;
CadVertex b = new CadVertex(getRP(dc, cp, tp, true));
CadVertex c = -(a - cp) + cp;
CadVertex d = -(b - cp) + cp;
CircleExpander.Draw(cp, a, b, 32, dc, pen);
dc.Drawing.DrawLine(pen, cp.vector, a.vector);
dc.Drawing.DrawLine(pen, cp.vector, b.vector);
dc.Drawing.DrawLine(pen, cp.vector, c.vector);
dc.Drawing.DrawLine(pen, cp.vector, d.vector);
}