public virtual void AddPolyPoint(float x, float y)
{
TriangleBasic.Point p = new TriangleBasic.Point(x, y);
if (!poly.Contains(p))
{
poly.Add(p);
}
}
private bool Process(TriangleBasic.PointList contour, TriangleBasic.PointList result)
{
result.Clear();
int n = contour.Size();
if (n < 3)
{
return(false);
}
int[] sV = new int[n];
if (0.0f < Area(contour))
{
for (int v = 0; v < n; v++)
{
sV[v] = v;
}
}
else
{
for (int v_0 = 0; v_0 < n; v_0++)
{
sV[v_0] = (n - 1) - v_0;
}
}
int nv = n;
int count = 2 * nv;
for (int v_1 = nv - 1; nv > 2;)
{
if (0 >= (count--))
{
return(false);
}
int u = v_1;
if (nv <= u)
{
u = 0;
}
v_1 = u + 1;
if (nv <= v_1)
{
v_1 = 0;
}
int w = v_1 + 1;
if (nv <= w)
{
w = 0;
}
if (Snip(contour, u, v_1, w, nv, sV))
{
int a, b, c, s, t;
a = sV[u];
b = sV[v_1];
c = sV[w];
result.Add(contour.Get(a));
result.Add(contour.Get(b));
result.Add(contour.Get(c));
for (s = v_1, t = v_1 + 1; t < nv; s++, t++)
{
sV[s] = sV[t];
}
nv--;
count = 2 * nv;
}
}
return(true);
}
