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);
}
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);
}
