private void area_MouseUp(object sender, MouseEventArgs e)
{
Pen p = new Pen(Color.Black);
Pen r = new Pen(Color.Red);
if (lineButton.Checked)
{
LastPoint = e.Location;
if (lineOptionsBox.SelectedIndex == 2 && polyPoints.Count > 1)
{
Point A = new Point(CurrentPoint.X, CurrentPoint.Y);
Point B = new Point(LastPoint.X, LastPoint.Y);
Point C = new Point(this.polyPoints[polyPoints.Count - 2].X, this.polyPoints[polyPoints.Count - 2].Y);
Point D = new Point(this.polyPoints[polyPoints.Count - 1].X, this.polyPoints[polyPoints.Count - 1].Y);
g.DrawLine(p, A, B);
bool f1 = false, f2 = false;
if (RightCheck(A, B, C) && !(RightCheck(A, B, D)))
{
f1 = true;
}
if (!(RightCheck(A, B, C)) && (RightCheck(A, B, D)))
{
f1 = true;
}
if (RightCheck(C, D, A) && !(RightCheck(C, D, B)))
{
f2 = true;
}
if (!(RightCheck(C, D, A)) && (RightCheck(C, D, B)))
{
f2 = true;
}
if (f1 == true && f2 == true)
{
label3.Text = "cross";
}
else
{
label3.Text = "no cross";
}
/*
* g.DrawLine(p, CurrentPoint, LastPoint);
*
* double a1 = (CurrentPoint.Y - LastPoint.Y) / (CurrentPoint.X - LastPoint.X);
* double a2 = (polyPoints[0].Y - polyPoints[1].Y) / (polyPoints[0].X - polyPoints[1].X);
*
* double b1 = CurrentPoint.Y - a1 * CurrentPoint.X;
* double b2 = polyPoints[0].Y - a2 * polyPoints[0].X;
*
* int x = (int)((b2 - b1) / (a1 - a2));
*
*
* if (((x < Math.Max(CurrentPoint.X, polyPoints[0].X)) || (x > Math.Min(LastPoint.X, polyPoints[1].X)))
|| ((x < Math.Max(polyPoints[0].X, CurrentPoint.X)) || (x > Math.Min(polyPoints[1].X, LastPoint.X))))
||{
|| x = (int)(-((CurrentPoint.X * LastPoint.Y - LastPoint.X * CurrentPoint.Y) * (polyPoints[1].X - polyPoints[0].X) - (polyPoints[0].X * polyPoints[1].Y - polyPoints[1].X * polyPoints[0].Y) * (LastPoint.X - CurrentPoint.X)) / ((CurrentPoint.Y - LastPoint.Y) * (polyPoints[1].X - polyPoints[0].X) - (polyPoints[0].Y - polyPoints[1].Y) * (LastPoint.X - CurrentPoint.X)));
|| int y = ((polyPoints[0].Y - polyPoints[1].Y) * (-x) - (polyPoints[0].X * polyPoints[1].Y - polyPoints[1].X * polyPoints[0].Y)) / (polyPoints[1].X - polyPoints[0].X);
|| g.FillEllipse(new SolidBrush(Color.Red), new Rectangle(x, y, 3, 3));
||
||}*/
area.Invalidate();
}
else if (lineOptionsBox.SelectedIndex == 3 && polyPoints.Count > 1)
{
int ox = this.polyPoints.First().X;
int oy = this.polyPoints.First().Y;
int xa = this.polyPoints.ElementAt(1).X;
int ya = this.polyPoints.ElementAt(1).Y;
int xb = this.CurrentPoint.X;
int yb = this.CurrentPoint.Y;
int oxm = 0;
int oym = 0;
int xam = xa - ox;
int yam = ya - oy;
int xbm = xb - ox;
int ybm = yb - oy;
/*
* double sinB = yb / Math.Sqrt((xb - ox) ^ 2 + (yb - oy) ^ 2);
* double sinA = ya / Math.Sqrt((xa - ox) ^ 2 + (ya - oy) ^ 2);
* double cosA = xa / Math.Sqrt((xa - ox) ^ 2 + (ya - oy) ^ 2);
* double cosB = xb / Math.Sqrt((xb - ox) ^ 2 + (yb - oy) ^ 2);*/
if ((ybm * xam - xbm * yam) > 0)
{
g.FillEllipse(new SolidBrush(Color.Blue), new Rectangle(this.CurrentPoint.X, this.CurrentPoint.Y, 3, 3));
label3.Text = "right";
}
else if ((ybm * xam - xbm * yam) < 0)
{
g.FillEllipse(new SolidBrush(Color.Red), new Rectangle(this.CurrentPoint.X, this.CurrentPoint.Y, 3, 3));
label3.Text = "left";
}
else
{
label3.Text = "No";
}
area.Invalidate();
}
else if (lineOptionsBox.SelectedIndex == 4 && polyPoints.Count > 1)
{
int ox = this.polyPoints.First().X;
int oy = this.polyPoints.First().Y;
int xa = this.polyPoints.ElementAt(1).X;
int ya = this.polyPoints.ElementAt(1).Y;
for (int i = 1; i < area.Width; i += 5)
{
for (int j = 1; j < area.Height; j += 5)
{
int xb = i; //-this.CurrentPoint.X;
int yb = j; //-this.CurrentPoint.Y;
int oxm = 0;
int oym = 0;
int xam = xa - ox;
int yam = ya - oy;
int xbm = xb - ox;
int ybm = yb - oy;
/*
* double sinB = yb / Math.Sqrt((xb - ox) ^ 2 + (yb - oy) ^ 2);
* double sinA = ya / Math.Sqrt((xa - ox) ^ 2 + (ya - oy) ^ 2);
* double cosA = xa / Math.Sqrt((xa - ox) ^ 2 + (ya - oy) ^ 2);
* double cosB = xb / Math.Sqrt((xb - ox) ^ 2 + (yb - oy) ^ 2);*/
if ((ybm * xam - xbm * yam) > 0)
{
g.FillEllipse(new SolidBrush(Color.Blue), new Rectangle(i, j, 3, 3));
label3.Text = "right";
}
else if ((ybm * xam - xbm * yam) < 0)
{
g.FillEllipse(new SolidBrush(Color.Red), new Rectangle(i, j, 3, 3));
label3.Text = "left";
}
else
{
label3.Text = "No";
}
area.Invalidate();
}
}
}
else
{
polyPoints.Clear();
g.DrawLine(p, CurrentPoint, LastPoint);
polyPoints.Add(CurrentPoint);
polyPoints.Add(LastPoint);
area.Invalidate();
}
}
else if (dotButton.Checked)
{
LastPoint = e.Location;
g.FillEllipse(new SolidBrush(Color.Black), new Rectangle(LastPoint.X, LastPoint.Y, 3, 3));
area.Invalidate();
}
else if (polygonButton.Checked)
{
if (polygonOptionsBox.SelectedIndex == 2 && polyPoints.Count > 0)
{
var dialogX = new InputBox("Введите угол");
int alpha = 0;
if (dialogX.ShowDialog() == DialogResult.Cancel)
{
return;
}
if (!int.TryParse(dialogX.ResultText, out alpha))
{
return;
}
LastPoint = e.Location;
g.DrawLine(new Pen(Color.White), polyPoints[0], polyPoints[polyPoints.Count - 1]);
for (int i = 0; i < polyPoints.Count - 1; i++)
{
g.DrawLine(new Pen(Color.White), polyPoints[i], polyPoints[i + 1]);
}
for (int i = 0; i < polyPoints.Count; i++)
{
if (i != polyPoints.Count - 1)
{
polyPoints[i] = rotate(LastPoint, alpha, polyPoints[i]);
g.DrawLine(new Pen(Color.Black), polyPoints[i], rotate(LastPoint, alpha, polyPoints[i + 1]));
}
else
{
polyPoints[i] = rotate(LastPoint, alpha, polyPoints[i]);
g.DrawLine(new Pen(Color.Black), polyPoints[i], polyPoints[0]);
}
}
area.Invalidate();
}
else if (polygonOptionsBox.SelectedIndex == 4 && polyPoints.Count > 0)
{
var dialogX = new InputBox("Введите коэффициент X сжатия/растяжения");
var dialogY = new InputBox("Введите коэффициент Y сжатия/растяжения");
double kx = 0.0, ky = 0.0;
if (dialogX.ShowDialog() == DialogResult.Cancel)
{
return;
}
if (!double.TryParse(dialogX.ResultText, out kx))
{
return;
}
if (dialogY.ShowDialog() == DialogResult.Cancel)
{
return;
}
if (!double.TryParse(dialogY.ResultText, out ky))
{
return;
}
LastPoint = e.Location;
g.DrawLine(new Pen(Color.White), polyPoints[0], polyPoints[polyPoints.Count - 1]);
for (int i = 0; i < polyPoints.Count - 1; i++)
{
g.DrawLine(new Pen(Color.White), polyPoints[i], polyPoints[i + 1]);
}
for (int i = 0; i < polyPoints.Count; i++)
{
if (i != polyPoints.Count - 1)
{
polyPoints[i] = scale(LastPoint, kx, ky, polyPoints[i]);
g.DrawLine(new Pen(Color.Black), polyPoints[i], scale(LastPoint, kx, ky, polyPoints[i + 1]));
}
else
{
polyPoints[i] = scale(LastPoint, kx, ky, polyPoints[i]);
g.DrawLine(new Pen(Color.Black), polyPoints[i], polyPoints[0]);
}
}
area.Invalidate();
}
// Check convex polygon(RightCheck)
else if (polygonOptionsBox.SelectedIndex == 5 && polyPoints.Count > 0)
{
LastPoint = e.Location;
Point P = CurrentPoint;//new Point(a, b);
int c = 0;
Point start = this.polyPoints.First();
Point old = this.polyPoints.First();
for (int i = 1; i < polyPoints.Count(); i++)
{
if (this.RightCheck(old, this.polyPoints.ElementAt(i), P) == true)
{
c += 1;
}
old = this.polyPoints.ElementAt(i);
}
if (this.RightCheck(old, start, P) == true)
{
c += 1;
}
if (c == 0 || c == this.polyPoints.Count())
{
g.FillEllipse(new SolidBrush(Color.Green), new Rectangle(P.X, P.Y, 4, 4));
}
else
{
g.FillEllipse(new SolidBrush(Color.Red), new Rectangle(P.X, P.Y, 4, 4));
}
area.Invalidate();
}
// Check convex polygon(RightCheckFilling)
else if (polygonOptionsBox.SelectedIndex == 6 && polyPoints.Count > 0)
{
LastPoint = e.Location;
for (int a = 1; a < area.Width; a += 5)
{
for (int b = 1; b < area.Height; b += 5)
{
Point P = new Point(a, b);
int c = 0;
Point start = this.polyPoints.First();
Point old = this.polyPoints.First();
for (int i = 1; i < polyPoints.Count(); i++)
{
if (this.RightCheck(old, this.polyPoints.ElementAt(i), P) == true)
{
c += 1;
}
old = this.polyPoints.ElementAt(i);
}
if (this.RightCheck(old, start, P) == true)
{
c += 1;
}
if (c == 0 || c == this.polyPoints.Count())
{
g.FillEllipse(new SolidBrush(Color.Green), new Rectangle(P.X, P.Y, 4, 4));
}
else
{
g.FillEllipse(new SolidBrush(Color.Red), new Rectangle(P.X, P.Y, 4, 4));
}
area.Invalidate();
}
}
}
else if (polygonOptionsBox.SelectedIndex == 7 && polyPoints.Count > 1)
{
int count_cross = 0;
Point P = CurrentPoint;//new Point(a, b);
Point start = this.polyPoints.First();
Point old = this.polyPoints.First();
Point D = new Point(area.Width - 1, P.Y);
for (int i = 1; i < polyPoints.Count(); i++)
{
if (this.Check_Cross(old, this.polyPoints.ElementAt(i), P, D) == true)
{
count_cross += 1;
}
old = this.polyPoints.ElementAt(i);
}
if (this.Check_Cross(old, start, P, D) == true)
{
count_cross += 1;
}
if (count_cross % 2 == 1)
{
g.FillEllipse(new SolidBrush(Color.Green), new Rectangle(P.X, P.Y, 4, 4));
}
else
{
g.FillEllipse(new SolidBrush(Color.Red), new Rectangle(P.X, P.Y, 4, 4));
}
area.Invalidate();
}
else if (polygonOptionsBox.SelectedIndex == 8 && polyPoints.Count > 1)
{
for (int a = 1; a < area.Width; a += 5)
{
for (int b = 1; b < area.Height; b += 5)
{
int count_cross = 0;
Point P = new Point(a, b);
Point start = this.polyPoints.First();
Point old = this.polyPoints.First();
Point D = new Point(area.Width - 1, P.Y);
for (int i = 1; i < polyPoints.Count(); i++)
{
if (this.Check_Cross(old, this.polyPoints.ElementAt(i), P, D) == true)
{
count_cross += 1;
}
old = this.polyPoints.ElementAt(i);
}
if (this.Check_Cross(old, start, P, D) == true)
{
count_cross += 1;
}
if (count_cross % 2 == 1)
{
g.FillEllipse(new SolidBrush(Color.Green), new Rectangle(P.X, P.Y, 4, 4));
}
else
{
g.FillEllipse(new SolidBrush(Color.Red), new Rectangle(P.X, P.Y, 4, 4));
}
area.Invalidate();
}
}
}
if (can_draw)
{
if (first)
{
polyPoints.Clear();
LastPoint = e.Location;
polyPoints.Add(LastPoint);
first = false;
}
else
{
g.DrawLine(p, LastPoint, CurrentPoint);
LastPoint = CurrentPoint;
polyPoints.Add(CurrentPoint);
area.Invalidate();
}
}
}
}
private void PolygonOptionsBox_SelectedIndexChanged(object sender, EventArgs e)
{
if (polygonButton.Checked && polyPoints.Count > 0)
{
if (polygonOptionsBox.SelectedIndex == 0)
{
var dialogX = new InputBox("Введите смещение по X (целое число)");
var dialogY = new InputBox("Введите смещение по Y (целое число)");
int dx = 0, dy = 0;
if (dialogX.ShowDialog() == DialogResult.Cancel)
{
return;
}
if (!int.TryParse(dialogX.ResultText, out dx))
{
return;
}
if (dialogY.ShowDialog() == DialogResult.Cancel)
{
return;
}
if (!int.TryParse(dialogY.ResultText, out dy))
{
return;
}
g.DrawLine(new Pen(Color.White), polyPoints[0], polyPoints[polyPoints.Count - 1]);
for (int i = 0; i < polyPoints.Count - 1; i++)
{
g.DrawLine(new Pen(Color.White), polyPoints[i], polyPoints[i + 1]);
}
for (int i = 0; i < polyPoints.Count; i++)
{
if (i != polyPoints.Count - 1)
{
polyPoints[i] = move(polyPoints[i], dx, dy);
g.DrawLine(new Pen(Color.Black), polyPoints[i], move(polyPoints[i + 1], dx, dy));
}
else
{
polyPoints[i] = move(polyPoints[i], dx, dy);
g.DrawLine(new Pen(Color.Black), polyPoints[i], polyPoints[0]);
}
}
area.Invalidate();
}
else if (polygonOptionsBox.SelectedIndex == 1 && polyPoints.Count > 0)
{
var dialogX = new InputBox("Введите угол");
int alpha = 0;
if (dialogX.ShowDialog() == DialogResult.Cancel)
{
return;
}
if (!int.TryParse(dialogX.ResultText, out alpha))
{
return;
}
LastPoint = mass_center();
g.DrawLine(new Pen(Color.White), polyPoints[0], polyPoints[polyPoints.Count - 1]);
for (int i = 0; i < polyPoints.Count - 1; i++)
{
g.DrawLine(new Pen(Color.White), polyPoints[i], polyPoints[i + 1]);
}
for (int i = 0; i < polyPoints.Count; i++)
{
if (i != polyPoints.Count - 1)
{
polyPoints[i] = rotate(LastPoint, alpha, polyPoints[i]);
g.DrawLine(new Pen(Color.Black), polyPoints[i], rotate(LastPoint, alpha, polyPoints[i + 1]));
}
else
{
polyPoints[i] = rotate(LastPoint, alpha, polyPoints[i]);
g.DrawLine(new Pen(Color.Black), polyPoints[i], polyPoints[0]);
}
}
area.Invalidate();
}
else if (polygonOptionsBox.SelectedIndex == 3 && polyPoints.Count > 0)
{
var dialogX = new InputBox("Введите коэффициент X сжатия/растяжения");
var dialogY = new InputBox("Введите коэффициент Y сжатия/растяжения");
double kx = 0.0, ky = 0.0;
if (dialogX.ShowDialog() == DialogResult.Cancel)
{
return;
}
if (!double.TryParse(dialogX.ResultText, out kx))
{
return;
}
if (dialogY.ShowDialog() == DialogResult.Cancel)
{
return;
}
if (!double.TryParse(dialogY.ResultText, out ky))
{
return;
}
LastPoint = mass_center();
g.DrawLine(new Pen(Color.White), polyPoints[0], polyPoints[polyPoints.Count - 1]);
for (int i = 0; i < polyPoints.Count - 1; i++)
{
g.DrawLine(new Pen(Color.White), polyPoints[i], polyPoints[i + 1]);
}
for (int i = 0; i < polyPoints.Count; i++)
{
if (i != polyPoints.Count - 1)
{
polyPoints[i] = scale(LastPoint, kx, ky, polyPoints[i]);
g.DrawLine(new Pen(Color.Black), polyPoints[i], scale(LastPoint, kx, ky, polyPoints[i + 1]));
}
else
{
polyPoints[i] = scale(LastPoint, kx, ky, polyPoints[i]);
g.DrawLine(new Pen(Color.Black), polyPoints[i], polyPoints[0]);
}
}
area.Invalidate();
}
}
}
