static Hisui.Geom.Point2d GetIntersection(Hisui.Geom.CodSys3d plane, Hisui.Geom.Line3d line)
{
var t = GeomUT.Dot(plane.o - line.Origin, plane.n) / GeomUT.Dot(line.Direction, plane.n);
var r = line.Position(t) - plane.o;
return(GeomUT.P(GeomUT.Dot(plane.u, r), GeomUT.Dot(plane.v, r)));
}
Hisui.Geom.CodSys3d[] GetQuadPlanes()
{
var points = this.GetQuadPoints();
var planes = new Hisui.Geom.CodSys3d[4];
for (int i = 0; i < 4; ++i)
{
var u = (points[(i + 1) % 4] - points[i]).Normalize();
var v = _clip.CodSys.n;
planes[i] = new Hisui.Geom.CodSys3d(u, v, points[i]);
}
return(planes);
}
Hisui.Geom.CodSys3d[] GetQuadPlanes()
{
var points = this.GetQuadPoints();
var planes = new Hisui.Geom.CodSys3d[4];
for ( int i = 0 ; i < 4 ; ++i ) {
var u = (points[(i + 1) % 4] - points[i]).Normalize();
var v = _clip.CodSys.n;
planes[i] = new Hisui.Geom.CodSys3d( u, v, points[i] );
}
return planes;
}
