public void SetBrep(IOnBrep brep)
{
if (null == brep || !brep.IsValid())
{
return;
}
m_brep = brep;
int face_count = m_brep.m_F.Count();
m_points.Reserve(face_count * SURFACE_ARROW_COUNT * SURFACE_ARROW_COUNT);
m_normals.Reserve(face_count * SURFACE_ARROW_COUNT * SURFACE_ARROW_COUNT);
m_points.SetCount(0);
m_normals.SetCount(0);
for (int i = 0; i < face_count; i++)
{
IOnBrepFace face = m_brep.m_F[i];
IOnBrepLoop loop = face.OuterLoop();
if (null == loop)
{
continue;
}
OnInterval udomain = face.Domain(0);
OnInterval vdomain = face.Domain(1);
if (loop.m_pbox.IsValid())
{
OnInterval domain = new OnInterval();
domain.Set(loop.m_pbox.m_min.x, loop.m_pbox.m_max.x);
domain.Intersection(udomain);
if (domain.IsIncreasing())
{
udomain.Set(domain.Min(), domain.Max());
}
domain.Set(loop.m_pbox.m_min.y, loop.m_pbox.m_max.y);
domain.Intersection(vdomain);
if (domain.IsIncreasing())
{
vdomain.Set(domain.Min(), domain.Max());
}
}
bool bUntrimmed = m_brep.FaceIsSurface(i);
ArrayOnInterval intervals = new ArrayOnInterval();
bool bRev = face.m_bRev;
for (double u = 0.0; u < SURFACE_ARROW_COUNT; u += 1.0)
{
double d = u / (SURFACE_ARROW_COUNT - 1.0);
double s = udomain.ParameterAt(d);
intervals.SetCount(0);
if (bUntrimmed || RhUtil.RhinoGetIsoIntervals(face, 1, s, intervals) > 0)
{
for (double v = 0.0; v < SURFACE_ARROW_COUNT; v += 1.0)
{
d = v / (SURFACE_ARROW_COUNT - 1.0);
double t = vdomain.ParameterAt(d);
bool bAdd = bUntrimmed;
for (int k = 0; !bAdd && k < intervals.Count(); k++)
{
if (intervals[k].Includes(t))
{
bAdd = true;
}
}
if (bAdd)
{
On3dPoint pt = new On3dPoint();
On3dVector du = new On3dVector();
On3dVector dv = new On3dVector();
On3dVector dir = new On3dVector();
if (face.EvNormal(s, t, ref pt, ref du, ref dv, ref dir))
{
m_points.Append(pt);
if (bRev)
{
dir.Reverse();
}
m_normals.Append(dir);
}
}
}
}
}
}
}