private bool CheckLine(MyPoint p1, MyPoint p2, double X, double Y)
{
if (p1.X > p2.X)
{
MyPoint tmp = p2;
p2 = p1;
p1 = tmp;
}
int y;
for (int x = p1.X; x < p2.X; x++)
{
y = (int)((p1.Y - p2.Y) * 1.0 / ((p1.X - p2.X) * 1.0) * x + p1.Y - ((p1.Y - p2.Y) * 1.0 / ((p1.X - p2.X) * 1.0)) * p1.X);
if ((x - radius * 2 < X && x + radius * 2 > X) && (y - radius * 2 < Y && y + radius * 2 > Y))
{
int y1, y2;
if (p2.Y > p1.Y)
{
y2 = p2.Y;
y1 = p1.Y;
}
else
{
y2 = p1.Y;
y1 = p2.Y;
}
middlePoint.setCoords(p1.X + (p2.X - p1.X) / 2, y1 + (y2 - y1) / 2);
return(true);
}
}
if (p1.Y > p2.Y)
{
MyPoint tmp = p2;
p2 = p1;
p1 = tmp;
}
for (y = p1.Y; y < p2.Y; y++)
{
int x = p1.X;
if ((x - radius * 2 < X && x + radius * 2 > X) && (y - radius * 2 < Y && y + radius * 2 > Y))
{
int y1, y2;
if (p2.Y > p1.Y)
{
y2 = p2.Y;
y1 = p1.Y;
}
else
{
y2 = p1.Y;
y1 = p2.Y;
}
middlePoint.setCoords(p1.X + (p2.X - p1.X) / 2, y1 + (y2 - y1) / 2);
return(true);
}
}
return(false);
}
private void MainPictureBox_MouseMovePoly(object sender, MouseEventArgs e)
{
for (int i = 0; i < points.Count; i++)
{
MyPoint p = points[i];
points[points.IndexOf(p)].setCoords(p.X + (e.X - mainPoint.X), p.Y + (e.Y - mainPoint.Y));
}
mainPoint.setCoords(e.X, e.Y);
moved = true;
mainPictureBox.Refresh();
}
public override void movePoint(MyPoint p1, MyPoint p2, ref int dX, ref int dY)
{
if (Math.Abs(calculateLength(p1, p2) - maxLength) > 1)
{
p2.setCoords(p2.X + dX, p2.Y + dY);
if (Math.Abs(calculateLength(p1, p2) - maxLength) > 1)
{
if (p2.Y < p1.Y)
{
p2.setCoords(p1.X, p1.Y - (int)(maxLength));
}
else
{
p2.setCoords(p1.X, p1.Y + (int)(maxLength));
}
}
}
else
{
dX = 0;
dY = 0;
}
}