public myArrow(string _name, Point _startPoint, int _rectW, int _rectH, int _arrowW, int _arrowH, ARROW_ORI _ori)
{
rect = new Rectangle(_startPoint.X, _startPoint.Y, _rectW, _rectH);
arrowW = _arrowW;
arrowH = _arrowH;
ori = _ori;
name = _name;
}
public myArrow(string _name, myRectangle _rect, int _arrowW, int _arrowH, ARROW_ORI _ori)
{
rect = new Rectangle(_rect.GetStartPoint().X, _rect.GetStartPoint().Y, _rect.W(), _rect.H());
arrowW = _arrowW;
arrowH = _arrowH;
ori = _ori;
name = _name;
}
/// <summary>
/// 生成箭头三角形，或1个，或2个箭头
/// </summary>
/// <param name="_ori"></param>
/// <param name="_arrowW"></param>
/// <param name="_arrowH"></param>
/// <returns></returns>
private myTriangle[] GenTriangle(ARROW_ORI _ori, int _arrowW, int _arrowH)
{
myTriangle[] tris = null;
string tname = string.Format("ori{0},sx{1},sy{2},w{3},h{4}", ori.ToString(), rect.X, rect.Y, _arrowW, _arrowH);
if (_ori == ARROW_ORI.END_ARROW_TOP)
{
PointF A = new PointF(rect.X - _arrowW, rect.Y);
PointF B = new PointF(rect.X + rect.Width + _arrowW, rect.Y);
PointF C = new PointF(A.X + (B.X - A.X) / 2, A.Y - _arrowH);
tri1 = new myTriangle(tname, A, B, C);
tris = new myTriangle[1] {
tri1
};
}
else if (_ori == ARROW_ORI.END_ARROW_BOM)
{
PointF A = new PointF(rect.X - _arrowW, rect.Y + rect.Height);
PointF B = new PointF(rect.X + rect.Width + _arrowW, A.Y);
PointF C = new PointF(A.X + (B.X - A.X) / 2, A.Y + _arrowH);
tri1 = new myTriangle(tname, A, B, C);
tris = new myTriangle[1] {
tri1
};
}
else if (_ori == ARROW_ORI.END_ARROW_BOTH_TB)
{
PointF A = new PointF(rect.X - _arrowW, rect.Y);
PointF B = new PointF(rect.X + rect.Width + _arrowW, rect.Y);
PointF C = new PointF(A.X + (B.X - A.X) / 2, A.Y - _arrowH);
tri1 = new myTriangle(tname, A, B, C);
PointF A2 = new PointF(rect.X - _arrowW, rect.Y + rect.Height);
PointF B2 = new PointF(rect.X + rect.Width + _arrowW, A2.Y);
PointF C2 = new PointF(A2.X + (B2.X - A2.X) / 2, A2.Y + _arrowH);
tri2 = new myTriangle(tname, A2, B2, C2);
tris = new myTriangle[2] {
tri1, tri2
};
}
else if (_ori == ARROW_ORI.END_ARROW_LEFT)
{
PointF A = new PointF(rect.X, rect.Y - _arrowW);
PointF B = new PointF(A.X, rect.Y + rect.Height + _arrowW);
PointF C = new PointF(A.X - arrowH, A.Y + (B.Y - A.Y) / 2);
tri1 = new myTriangle(tname, A, B, C);
tris = new myTriangle[1] {
tri1
};
}
else if (_ori == ARROW_ORI.END_ARROW_RIGHT)
{
PointF A = new PointF(rect.X + rect.Width, rect.Y - _arrowW);
PointF B = new PointF(A.X, rect.Y + rect.Height + _arrowW);
PointF C = new PointF(A.X + _arrowH, A.Y + (B.Y - A.Y) / 2);
tri1 = new myTriangle(tname, A, B, C);
tris = new myTriangle[1] {
tri1
};
}
else if (_ori == ARROW_ORI.END_ARROW_BOTH_LR)
{
PointF A = new PointF(rect.X, rect.Y - _arrowW);
PointF B = new PointF(A.X, rect.Y + rect.Height + _arrowW);
PointF C = new PointF(A.X - arrowH, A.Y + (B.Y - A.Y) / 2);
tri1 = new myTriangle(tname, A, B, C);
PointF A2 = new PointF(rect.X + rect.Width, rect.Y - _arrowW);
PointF B2 = new PointF(A2.X, rect.Y + rect.Height + _arrowW);
PointF C2 = new PointF(A2.X + _arrowH, A2.Y + (B2.Y - A2.Y) / 2);
tri2 = new myTriangle(tname, A2, B2, C2);
tris = new myTriangle[2] {
tri1, tri2
};
}
else
{
}
return(tris);
}
