private Plane Offset(Vector offset)
{
IPointEntity origin = Origin.PointEntity;
IPointEntity newOrigin = origin.Add(offset);
Plane plane = Plane.ByOriginNormal(newOrigin.ToPoint(false, null), Normal, Size);
plane.Context = this;
return(plane);
}
private Polygon CreatePlaneVisuals(double size, bool persist)
{
// to display a plane we would be required to draw a rectangle in the plane
//
//
/*
* given origin, X & Y
* we want to evaluate the four corner points based on size
*
* where o is the origin of the plane
*
* Y
|
|
| v1 ______________ v2
| | |
| | |
| | o |
| | |
| v4 |______________| v3
|
| X
|_________________________________________
*
*/
ICoordinateSystemEntity coordSys = PlaneEntity.GetCoordinateSystem();
IPointEntity orig = coordSys.Origin;
var xNorm = new Vector(coordSys.XAxis).Normalize().MultiplyBy(size / 2.0);
var yNorm = new Vector(coordSys.YAxis).Normalize().MultiplyBy(size / 2.0);
var dirv1 = yNorm - xNorm;
var dirv2 = yNorm + xNorm;
var dirv3 = dirv1.Negate();
var dirv4 = dirv2.Negate();
Point[] positions = { orig.Add(dirv1).ToPoint(false, null), orig.Add(dirv2).ToPoint(false, null),
orig.Add(dirv3).ToPoint(false, null), orig.Add(dirv4).ToPoint(false, null) };
return(new Polygon(positions, persist));
}
/// <summary>
///
/// </summary>
/// <param name="u"></param>
/// <param name="v"></param>
/// <param name="offset"></param>
/// <returns></returns>
internal DSPoint PointAtParametersCore(ref double u, ref double v, double offset)
{
bool uchange = DSGeometryExtension.ClipParamRange(ref u);
bool vchange = DSGeometryExtension.ClipParamRange(ref v);
// TO DO - throw a warning each time a condition above is satisfied.
//throw new System.ArgumentException(string.Format(Properties.Resources.InvalidInput, "u or v parameter", "Surface.PointAtParameters"));
IPointEntity pt = SurfaceEntity.PointAtParameter(u, v);
if (!offset.EqualsTo(0.0))
{
DSVector normal = new DSVector(SurfaceEntity.NormalAtPoint(pt));
DSVector translation = normal.Normalize().Scale(offset);
IPointEntity offsetPt = pt.Add(translation);
pt.Dispose();
pt = offsetPt;
}
return(pt.ToPoint(true, this));
}