public static IBody2 CreateCirclularSheet(this IModeler modeler, Vector3 center, Vector3 vNormal, float radius)
{
var surf = (Surface)modeler.CreatePlanarSurface(center.ToDoubles(), vNormal.ToDoubles());
var startPoint = center + vNormal.Orthogonal().Unit() * radius;
var endPoint = startPoint;
var arc =
(Curve)
modeler.CreateArc
(center.ToDoubles(), vNormal.ToDoubles(), (float)radius, startPoint.ToDoubles(), endPoint.ToDoubles());
return((IBody2)surf.CreateTrimmedSheet(new[] { arc }));
}
/// <summary>
/// Create a bounded sheet.
/// </summary>
/// <param name="modeler"></param>
/// <param name="center">Center of the surface</param>
/// <param name="vNormal">Direction of the surface</param>
/// <param name="p0">Point to project onto surface to find UV bounds</param>
/// <param name="p1">Point to project onto surface to find UV bounds</param>
/// <returns></returns>
public static IBody2 CreateSheet(this IModeler modeler, Vector3 center, Vector3 vNormal, double r)
{
var surf = (Surface)modeler.CreatePlanarSurface(center.ToDoubles(), vNormal.ToDoubles());
var mid = surf.GetClosestPointOnTs(center);
var midPoint = mid.Point.ToVector3();
var upVector = (surf.PointAt(mid.U, mid.V + 1) - midPoint).Unit();
var rightVector = (surf.PointAt(mid.U + 1, mid.V) - midPoint).Unit();
var low = midPoint - upVector * r - rightVector * r;
var high = midPoint + upVector * r + rightVector * r;
var uvLow = surf.GetClosestPointOnTs(low);
var uvHigh = surf.GetClosestPointOnTs(high);
return(modeler.CreateSheetFromSurface(surf, uvLow, uvHigh));
}