private void DrawLineWithIntCords(Graphics g)
{
if (is_drawing)
{
is_drawing = false;
LineWithIntCords.Draw(g, p_begin, p_end);
}
}
public static void DrawRect(Graphics g, Rectangle r)
{
LineWithIntCords.Draw(g, new Point(r.X, 0), new Point(r.X, 1000));
LineWithIntCords.Draw(g, new Point(r.X + r.Width, 0), new Point(r.X + r.Width, 1000));
LineWithIntCords.Draw(g, new Point(0, r.Y), new Point(1000, r.Y));
LineWithIntCords.Draw(g, new Point(0, r.Y + r.Height), new Point(1000, r.Y + r.Height));
}
public void DrawCirusBec(Graphics g, Segment seg)
{
var dir = seg.Direction;
var tA = 0.0f;
var tB = 1.0f;
var edges = GetEdges();
foreach (var edge in edges)
{
switch (Math.Sign(edge.Normal.ScalarMul(dir)))
{
case -1:
{
var t = seg.IntersectionParameter(edge);
if (t > tA)
{
tA = t;
}
break;
}
case +1:
{
var t = seg.IntersectionParameter(edge);
if (t < tB)
{
tB = t;
}
break;
}
case 0:
{
if (!edge.OnLeft(seg.A))
{
return;
}
break;
}
}
}
if (tA > tB)
{
return;
}
seg = seg.Morph(tA, tB);
LineWithIntCords.Draw(g, new Point((int)Math.Round(seg.A.X), (int)Math.Round(seg.A.Y)), new Point((int)Math.Round(seg.B.X), (int)Math.Round(seg.B.Y)));
}
public static void SredTochki(Graphics g, Rectangle r, Point p1, Point p2)
{
if (Math.Abs(p1.X - p2.X) <= 1 && Math.Abs(p1.Y - p2.Y) <= 1)
{
return;
}
if (isInside(r, p1) && isInside(r, p2))
{
LineWithIntCords.Draw(g, p1, p2);
}
int code1 = GetCode(r, p1);
int code2 = GetCode(r, p2);
if ((code1 & code2) != 0)
{
return;
}
SredTochki(g, r, p1, new Point((p1.X + p2.X) / 2, (p1.Y + p2.Y) / 2));
SredTochki(g, r, new Point((p1.X + p2.X) / 2, (p1.Y + p2.Y) / 2), p2);
}
public static void SazerlendCoen(Graphics g, Rectangle r, Point p1, Point p2)
{
int code, code1, code2;
Point p;
code1 = GetCode(r, p1);
code2 = GetCode(r, p2);
while (code1 != 0 || code2 != 0)
{
if ((code1 & code2) != 0)
{
return;
}
if (code1 != 0)
{
code = code1;
p = p1;
}
else
{
code = code2;
p = p2;
}
if ((code & LEFT) != 0)
{
p.Y += (p1.Y - p2.Y) * (r.X - p.X) / (p1.X - p2.X);
p.X = r.X;
}
else if ((code & RIGHT) != 0)
{
p.Y += (p1.Y - p2.Y) * (r.X + r.Width - p.X) / (p1.X - p2.X);
p.X = r.X + r.Width;
}
else if ((code & BOT) != 0)
{
p.X += (p1.X - p2.X) * (r.Y + r.Height - p.Y) / (p1.Y - p2.Y);
p.Y = r.Y + r.Height;
}
else if ((code & TOP) != 0)
{
p.X += (p1.X - p2.X) * (r.Y - p.Y) / (p1.Y - p2.Y);
p.Y = r.Y;
}
if (code == code1)
{
p1 = p;
code1 = GetCode(r, p1);
}
else
{
p2 = p;
code2 = GetCode(r, p2);
}
}
LineWithIntCords.Draw(g, p1, p2);
}
