private void VeDuong(Diem diemdau,Diem diemcuoi, Color cl)
{
SolidBrush myBrush = new SolidBrush(Color.Green);
Graphics tengido = this.CreateGraphics();
Pen pen = new Pen(cl, 3);
Font font = new Font("Arial", 15, FontStyle.Bold);
tengido.DrawLine(pen,diemdau.A,diemdau.B,diemcuoi.A,diemcuoi.B );
//vẽ mũi tên
if (CoHuong == true)
{
pen.EndCap = System.Drawing.Drawing2D.LineCap.Custom;
pen.CustomEndCap = new System.Drawing.Drawing2D.AdjustableArrowCap(4, 4, true);
}
tengido.DrawLine(pen, diemdau.A, diemdau.B, (diemcuoi.A+diemdau.A)/2, (diemcuoi.B+diemdau.B)/2);
// tengido.DrawLine(pen, x1, y1, x2, y2);
//hủy
pen.Dispose();
tengido.Dispose();
}
public void LuuDuongVaDiem(string _diem, string _diemdau, string _diemsau)
{
//Lưu đỉêm
Diem diem = new Diem();
diem.Ten = _diem;
LuuDiem.Add(diem);
//Lưu đường
DuongThang dt = new DuongThang();
Diem diemdau = new Diem();
diemdau.Ten = _diemdau;
dt.DiemDau = diemdau;
Diem diemsau = new Diem();
diemsau.Ten = _diemsau;
dt.DiemCuoi = diemsau;
LuuDuong.Add(dt);
}
private void VeDijkstra_MouseDown(object sender, MouseEventArgs e)
{
//Vẽ điểm
if (Dangve == true)
{
Diem diem = new Diem();
diem.A = e.X;
diem.B = e.Y;
diem.Ten = thutu_diem.ToString();
diemColl.Add(diem);
thutu_diem++;
Invalidate();
return;
// Dangve = false;
}
//Xóa điểm
//Vẽ đường
Diem kq = new Diem();
kq = KiemTraDiem_ThuocDiem(e.X, e.Y);
if (kq != null)
{
if (DiemBatDau == "")
{
x1 = kq.A+5;
y1 = kq.B+5;
DiemBatDau = kq.Ten.ToString();
return;
}
if (DiemCuoi == "")
{
x2 = kq.A+5;
y2 = kq.B+5;
DiemCuoi = kq.Ten.ToString();
//Gán đừơng thẳng và đưa vào Coll
DuongThang dt = new DuongThang();
Diem temp = new Diem();
temp.A = x1;
temp.B = y1;
temp.Ten = DiemBatDau;
dt.DiemDau = temp;
Diem temp1 = new Diem();
temp1.A = x2;
temp1.B = y2;
temp1.Ten = DiemCuoi;
dt.DiemCuoi = temp1;
int dodai =(int) Math.Sqrt(Math.Pow((dt.DiemDau.A - dt.DiemCuoi.A),2) + Math.Pow((dt.DiemDau.B - dt.DiemCuoi.B),2));
dt.ChieuDai = dodai;
if(KiemTraDuongTonTai(dt)!=true &&DiemBatDau!=DiemCuoi)
duongColl.Add(dt);
//Nếu là đường vô hướng
if (CoHuong == false)
{
dt = new DuongThang();
temp = new Diem();
temp1 = new Diem();
temp.A = x1;
temp.B = y1;
temp.Ten = DiemCuoi;
dt.DiemDau = temp;
temp1.A = x2;
temp1.B = y2;
temp1.Ten = DiemBatDau;
dt.DiemCuoi = temp1;
dodai = (int)Math.Sqrt(Math.Pow((dt.DiemDau.A - dt.DiemCuoi.A), 2) + Math.Pow((dt.DiemDau.B - dt.DiemCuoi.B), 2));
dt.ChieuDai = dodai;
if (KiemTraDuongTonTai(dt) != true && DiemBatDau != DiemCuoi)
duongColl.Add(dt);
}
Invalidate();
DiemBatDau = "";
DiemCuoi = "";
}
}
}
protected override void OnPaint(PaintEventArgs e)
{
///////////////////////////////////////////vẽ tòan bộ//////////////////////////
if (CachVe == 1)
{
//Vẽ đường
foreach (DuongThang dt in duongColl)
{
VeDuong(dt.DiemDau, dt.DiemCuoi, Color.Green);
}
if (LoTrinh != null)
{
for (int i = 0; i < LoTrinh.Count - 1; i++)
{
foreach (DuongThang dt in duongColl)
{
if (dt.DiemDau.Ten == LoTrinh[i] && dt.DiemCuoi.Ten == LoTrinh[i + 1])
{
VeDuong(dt.DiemDau, dt.DiemCuoi, Color.Red);
break;
}
}
}
}
//vẽ điểm
foreach (Diem diem in diemColl)
{
VeDiem(diem.Ten, diem.A, diem.B, Color.Black);
}
if (LoTrinh != null)
{
for (int i = 0; i < LoTrinh.Count; i++)
{
foreach (Diem diem in diemColl)
{
if (diem.Ten == LoTrinh[i])
{
VeDiem(diem.Ten, diem.A, diem.B, Color.Blue);
break;
}
}
}
}
}
///////////////////////////////////vẽ từng buớc///////////////////////////////
else if (CachVe == 2)
{
//Vẽ đường
foreach (DuongThang dt in duongColl)
{
VeDuong(dt.DiemDau, dt.DiemCuoi, Color.Green);
}
Diem _dau = new Diem();
Diem _cuoi = new Diem();
Diem _trunggian = new Diem();
if (StepColl != null && StepColl.Count!=0 && Buoc!=0)
{
foreach (Diem diem in diemColl)
{
if (diem.Ten == StepColl.Index(Buoc - 1).Dau)
{
_dau.A = diem.A + 5;
_dau.B = diem.B + 5;
_dau.Ten = diem.Ten;
}
if (diem.Ten == StepColl.Index(Buoc - 1).TrungGian)
{
_trunggian.A = diem.A + 5;
_trunggian.B = diem.B + 5;
_trunggian.Ten = diem.Ten;
}
if (diem.Ten == StepColl.Index(Buoc - 1).Cuoi)
{
_cuoi.A = diem.A + 5;
_cuoi.B = diem.B + 5;
_cuoi.Ten = diem.Ten;
}
}
foreach (DuongThang dt in duongColl)
{
if (dt.DiemDau.Ten == _dau.Ten && dt.DiemCuoi.Ten == _trunggian.Ten)
{
VeDuong(_dau, _trunggian, Color.Red);
break;
}
else
VeDuongAo(_dau, _trunggian, Color.Tomato);
}
foreach (DuongThang dt in duongColl)
{
if (dt.DiemDau.Ten == _trunggian.Ten && dt.DiemCuoi.Ten == _cuoi.Ten)
{
VeDuong(_trunggian, _cuoi, Color.Red);
break;
}
else
VeDuongAo(_trunggian, _cuoi, Color.Tomato);
}
}
//vẽ điểm
foreach (Diem diem in diemColl)
{
VeDiem(diem.Ten, diem.A, diem.B, Color.Black);
}
if (StepColl != null && StepColl.Count != 0&&Buoc!=0)
{
VeDiem(_trunggian.Ten,_trunggian.A-5, _trunggian.B-5, Color.Blue);
}
// CachVe = 2;
return;
}
/////////////////////////////////vẽ bình thường////////////////////////////
else
{
//Vẽ đường
foreach (DuongThang dt in duongColl)
{
VeDuong(dt.DiemDau, dt.DiemCuoi, Color.Green);
}
//vẽ điểm
foreach (Diem diem in diemColl)
{
// VeDiem(diem.A, diem.B, Color.Red);
VeDiem(diem.Ten, diem.A, diem.B, Color.Black);
}
}
}
public DuongThang()
{
diemdau= null;
diemcuoi=null;
chieudai = 0;
}
public void Add(Diem diem)
{
List.Add(diem);
}
