/// <summary>
/// Transform calculator
/// </summary>
public bool CalculateTransform(Rhino.Display.RhinoViewport vp, double length, ref Rhino.Geometry.Transform xform)
{
bool rc = false;
if (null == xform)
{
xform = new Rhino.Geometry.Transform();
}
xform = Rhino.Geometry.Transform.Identity;
if (length >= Rhino.RhinoMath.ZeroTolerance)
{
Rhino.Geometry.Plane plane = new Rhino.Geometry.Plane(vp.ConstructionPlane())
{
Origin = m_origin
};
Rhino.Geometry.Transform rotate_xform = Rhino.Geometry.Transform.PlaneToPlane(Rhino.Geometry.Plane.WorldXY, plane);
Rhino.Geometry.Transform scale_xform = Rhino.Geometry.Transform.Scale(plane, length, length, length);
xform = scale_xform * rotate_xform;
rc = xform.IsValid;
if (rc)
{
m_length = length;
}
}
return(rc);
}
public Transform CalculateTransform(Rhino.Display.RhinoViewport viewport, double d)
{
Point3d basePoint;
if (!TryGetBasePoint(out basePoint))
{
return(Transform.Identity);
}
Plane plane = viewport.ConstructionPlane();
plane.Origin = basePoint;
Vector3d v = RefPoint - basePoint;
double len1 = v.Length;
if (Math.Abs(len1) < 0.000001)
{
return(Transform.Identity);
}
v.Unitize();
v = v * d;
double len2 = v.Length;
if (Math.Abs(len2) < 0.000001)
{
return(Transform.Identity);
}
Scale = len2 / len1;
return(Transform.Scale(plane, Scale, Scale, Scale));
}
/// <summary>
/// Transform calculator
/// </summary>
public bool CalculateTransform(Rhino.Display.RhinoViewport vp, Rhino.Geometry.Point3d pt, ref Rhino.Geometry.Transform xform)
{
bool rc = false;
if (null == xform)
{
xform = new Rhino.Geometry.Transform();
}
xform = Rhino.Geometry.Transform.Identity;
if (pt.IsValid)
{
Rhino.Geometry.Plane plane = new Rhino.Geometry.Plane(vp.ConstructionPlane())
{
Origin = m_origin
};
Rhino.Geometry.Vector3d xaxis = (pt - plane.Origin);
double length = xaxis.Length;
if (length >= Rhino.RhinoMath.ZeroTolerance)
{
Rhino.Geometry.Vector3d yaxis;
yaxis = 0 != xaxis.IsParallelTo(plane.Normal) ? plane.YAxis : Rhino.Geometry.Vector3d.CrossProduct(plane.Normal, xaxis);
plane = new Rhino.Geometry.Plane(plane.Origin, xaxis, yaxis);
if (!plane.IsValid)
{
return(rc);
}
Rhino.Geometry.Transform rotate_xform = Rhino.Geometry.Transform.PlaneToPlane(Rhino.Geometry.Plane.WorldXY, plane);
Rhino.Geometry.Transform scale_xform = Rhino.Geometry.Transform.Scale(plane, length, length, length);
xform = scale_xform * rotate_xform;
rc = xform.IsValid;
if (rc)
{
m_length = length;
}
}
}
return(rc);
}
public override Transform CalculateTransform(Rhino.Display.RhinoViewport viewport, Point3d point)
{
Point3d basePoint;
if (!TryGetBasePoint(out basePoint))
{
return(Transform.Identity);
}
double len2 = (point - basePoint).Length;
double len1 = (RefPoint - basePoint).Length;
if (Math.Abs(len1) < 0.000001 || Math.Abs(len2) < 0.000001)
{
return(Transform.Identity);
}
Scale = len2 / len1;
Plane plane = viewport.ConstructionPlane();
plane.Origin = basePoint;
return(Transform.Scale(plane, Scale, Scale, Scale));
}
