public void UpdateBoundingBox()
{
m_boundingBox = new List <PolyLine3d>();
PolyLine3d face = new PolyLine3d();
face.AddPoint(new Point3d(m_min.x, m_min.y, m_min.z));
face.AddPoint(new Point3d(m_max.x, m_min.y, m_min.z));
face.AddPoint(new Point3d(m_max.x, m_max.y, m_min.z));
face.AddPoint(new Point3d(m_min.x, m_max.y, m_min.z));
face.AddPoint(new Point3d(m_min.x, m_min.y, m_min.z));
m_boundingBox.Add(face);
face = new PolyLine3d();
face.AddPoint(new Point3d(m_min.x, m_min.y, m_max.z));
face.AddPoint(new Point3d(m_max.x, m_min.y, m_max.z));
face.AddPoint(new Point3d(m_max.x, m_max.y, m_max.z));
face.AddPoint(new Point3d(m_min.x, m_max.y, m_max.z));
face.AddPoint(new Point3d(m_min.x, m_min.y, m_max.z));
m_boundingBox.Add(face);
face = new PolyLine3d();
face.AddPoint(new Point3d(m_min.x, m_min.y, m_min.z));
face.AddPoint(new Point3d(m_min.x, m_min.y, m_max.z));
m_boundingBox.Add(face);
face = new PolyLine3d();
face.AddPoint(new Point3d(m_max.x, m_min.y, m_min.z));
face.AddPoint(new Point3d(m_max.x, m_min.y, m_max.z));
m_boundingBox.Add(face);
face = new PolyLine3d();
face.AddPoint(new Point3d(m_max.x, m_max.y, m_min.z));
face.AddPoint(new Point3d(m_max.x, m_max.y, m_max.z));
m_boundingBox.Add(face);
face = new PolyLine3d();
face.AddPoint(new Point3d(m_min.x, m_max.y, m_min.z));
face.AddPoint(new Point3d(m_min.x, m_max.y, m_max.z));
m_boundingBox.Add(face);
}
public PolyLine3d IntersectZPlane(float zcur)
{
try
{
PolyLine3d segment = new PolyLine3d();
//Intersect the polygon with the specified Z-Plane
// this will return 0,1,2 intersections.
// using the returns, impose several rules
//use a polyline to do the intersections
Point3d p1, p2, p3; // intersection points for the 3 3d line segments
int count = 0;
Point3d[] lst = new Point3d[3];
PolyLine3d lineseg1 = null;
PolyLine3d lineseg2 = null;
PolyLine3d lineseg3 = null;
lineseg1 = new PolyLine3d();
lineseg1.AddPoint(m_points[0]); // 0-1
lineseg1.AddPoint(m_points[1]);
p1 = lineseg1.IntersectZ(zcur);
if (p1 != null)
{
count++;
segment.AddPoint(p1);
}
lineseg2 = new PolyLine3d();
lineseg2.AddPoint(m_points[1]); // 1-2
lineseg2.AddPoint(m_points[2]);
p2 = lineseg2.IntersectZ(zcur);
if (p2 != null)
{
count++;
segment.AddPoint(p2);
}
if (count == 0)
return null;
// there is no sense in doing the 3rd intersection if we don't have
// at least 1 point at this stage
lineseg3 = new PolyLine3d();
lineseg3.AddPoint(m_points[2]); // 2-0
lineseg3.AddPoint(m_points[0]);
p3 = lineseg3.IntersectZ(zcur);
if (p3 != null)
{
count++;
segment.AddPoint(p3);
}
if (count != 2) // might be 0,1 or 3
return null;
segment.m_color = Color.Red;
return segment;
}
catch (Exception)
{
return null;
}
}
public PolyLine3d IntersectZPlane(double zcur)
{
try
{
PolyLine3d segment = new PolyLine3d();
//Intersect the polygon with the specified Z-Plane
// this will return 0,1,2 intersections.
// using the returns, impose several rules
//use a polyline to do the intersections
Point3d p1, p2, p3; // intersection points for the 3 3d line segments
int count = 0;
Point3d[] lst = new Point3d[3];
if (lineseg1 == null)
{
lineseg1 = new PolyLine3d();
lineseg1.AddPoint(m_points[0]); // 0-1
lineseg1.AddPoint(m_points[1]);
}
p1 = lineseg1.IntersectZ(zcur);
if (p1 != null)
{
count++;
segment.AddPoint(p1);
}
if (lineseg2 == null)
{
lineseg2 = new PolyLine3d();
lineseg2.AddPoint(m_points[1]); // 1-2
lineseg2.AddPoint(m_points[2]);
}
p2 = lineseg2.IntersectZ(zcur);
if (p2 != null)
{
count++;
segment.AddPoint(p2);
}
if (count == 0)
{
return(null);
}
// there is no sense in doing the 3rd intersection if we don't have
// at least 1 point at this stage
if (lineseg3 == null)
{
lineseg3 = new PolyLine3d();
lineseg3.AddPoint(m_points[2]); // 2-0
lineseg3.AddPoint(m_points[0]);
}
p3 = lineseg3.IntersectZ(zcur);
if (p3 != null)
{
count++;
segment.AddPoint(p3);
}
if (count != 2) // might be 0,1 or 3
{
return(null);
}
segment.m_color = Color.Red;
return(segment);
}
catch (Exception)
{
return(null);
}
}
public void UpdateBoundingBox()
{
m_boundingBox = new List<PolyLine3d>();
PolyLine3d face = new PolyLine3d();
face.AddPoint(new Point3d(m_min.x, m_min.y, m_min.z));
face.AddPoint(new Point3d(m_max.x, m_min.y, m_min.z));
face.AddPoint(new Point3d(m_max.x, m_max.y, m_min.z));
face.AddPoint(new Point3d(m_min.x, m_max.y, m_min.z));
face.AddPoint(new Point3d(m_min.x, m_min.y, m_min.z));
m_boundingBox.Add(face);
face = new PolyLine3d();
face.AddPoint(new Point3d(m_min.x, m_min.y, m_max.z));
face.AddPoint(new Point3d(m_max.x, m_min.y, m_max.z));
face.AddPoint(new Point3d(m_max.x, m_max.y, m_max.z));
face.AddPoint(new Point3d(m_min.x, m_max.y, m_max.z));
face.AddPoint(new Point3d(m_min.x, m_min.y, m_max.z));
m_boundingBox.Add(face);
face = new PolyLine3d();
face.AddPoint(new Point3d(m_min.x, m_min.y, m_min.z));
face.AddPoint(new Point3d(m_min.x, m_min.y, m_max.z));
m_boundingBox.Add(face);
face = new PolyLine3d();
face.AddPoint(new Point3d(m_max.x, m_min.y, m_min.z));
face.AddPoint(new Point3d(m_max.x, m_min.y, m_max.z));
m_boundingBox.Add(face);
face = new PolyLine3d();
face.AddPoint(new Point3d(m_max.x, m_max.y, m_min.z));
face.AddPoint(new Point3d(m_max.x, m_max.y, m_max.z));
m_boundingBox.Add(face);
face = new PolyLine3d();
face.AddPoint(new Point3d(m_min.x, m_max.y, m_min.z));
face.AddPoint(new Point3d(m_min.x, m_max.y, m_max.z));
m_boundingBox.Add(face);
}
public PolyLine3d IntersectZPlane(double zcur)
{
try
{
PolyLine3d segment = new PolyLine3d();
//Intersect the polygon with the specified Z-Plane
// this will return 0,1,2 intersections.
// using the returns, impose several rules
//iterate through the poly vertices
// to create 3d line segments
// foreach (Point3d p3d in m_points)
// {
//use a polyline to do the intersections
//Since there are only 3d points, this is easier than a loop
PolyLine3d lineseg1 = new PolyLine3d();
PolyLine3d lineseg2 = new PolyLine3d();
PolyLine3d lineseg3 = new PolyLine3d();
lineseg1.AddPoint(m_points[0]); // 0-1
lineseg1.AddPoint(m_points[1]);
lineseg2.AddPoint(m_points[1]); // 1-2
lineseg2.AddPoint(m_points[2]);
lineseg3.AddPoint(m_points[2]); // 2-0
lineseg3.AddPoint(m_points[0]);
Point3d p1, p2, p3; // intersection points for the 3 3d line segments
p1 = lineseg1.IntersectZ(zcur);
p2 = lineseg2.IntersectZ(zcur);
p3 = lineseg3.IntersectZ(zcur);
int count = 0;
Point3d []lst = new Point3d[3];
if (p1 != null) lst[count++] = p1;
if (p2 != null) lst[count++] = p2;
if (p3 != null) lst[count++] = p3;
if (count == 3)
{
//co-planer
return null;
}
if (count != 2)
return null;
segment.AddPoint(lst[0]);
segment.AddPoint(lst[1]);
segment.m_color = Color.Red;
return segment;
}
catch (Exception)
{
return null;
}
}
public PolyLine3d IntersectZPlane(double zcur)
{
try
{
PolyLine3d segment = new PolyLine3d();
//Intersect the polygon with the specified Z-Plane
// this will return 0,1,2 intersections.
// using the returns, impose several rules
//iterate through the poly vertices
// to create 3d line segments
// foreach (Point3d p3d in m_points)
// {
//use a polyline to do the intersections
//Since there are only 3d points, this is easier than a loop
PolyLine3d lineseg1 = new PolyLine3d();
PolyLine3d lineseg2 = new PolyLine3d();
PolyLine3d lineseg3 = new PolyLine3d();
lineseg1.AddPoint(m_points[0]); // 0-1
lineseg1.AddPoint(m_points[1]);
lineseg2.AddPoint(m_points[1]); // 1-2
lineseg2.AddPoint(m_points[2]);
lineseg3.AddPoint(m_points[2]); // 2-0
lineseg3.AddPoint(m_points[0]);
Point3d p1, p2, p3; // intersection points for the 3 3d line segments
p1 = lineseg1.IntersectZ(zcur);
p2 = lineseg2.IntersectZ(zcur);
p3 = lineseg3.IntersectZ(zcur);
int count = 0;
Point3d [] lst = new Point3d[3];
if (p1 != null)
{
lst[count++] = p1;
}
if (p2 != null)
{
lst[count++] = p2;
}
if (p3 != null)
{
lst[count++] = p3;
}
if (count == 3)
{
//co-planer
return(null);
}
if (count != 2)
{
return(null);
}
segment.AddPoint(lst[0]);
segment.AddPoint(lst[1]);
segment.m_color = Color.Red;
return(segment);
}
catch (Exception)
{
return(null);
}
}
