public static Extents3d Offset(this Extents3d ext, double percent = 50)
{
var dX = ext.GetLength() * (percent / 100) * 0.5;
var dY = ext.GetHeight() * (percent / 100) * 0.5;
return(new Extents3d(
new Point3d(ext.MinPoint.X - dX, ext.MinPoint.Y - dY, 0),
new Point3d(ext.MaxPoint.X + dX, ext.MaxPoint.Y + dY, 0)
));
}
public static List <Point3d> GetRegularGridPoints(this Extents3d ext, double len)
{
var ptsGrid = new List <Point3d>();
var extL = ext.GetLength();
var extH = ext.GetHeight();
var iX = (int)(extL / len) + 1;
var iY = (int)(extH / len) + 1;
var dX = extL / iX;
var dY = extH / iY;
for (var x = 0; x < iX; x++)
{
for (var y = 0; y < iY; y++)
{
ptsGrid.Add(new Point3d(ext.MinPoint.X + len * 0.5 + x * dX, ext.MinPoint.Y + len * 0.5 + y * dY, 0));
}
}
return(ptsGrid);
}
public static Line GetExtentLine(Extents3d ext, bool isWindow)
{
var diag = ext.MaxPoint - ext.MinPoint;
Vector3d vec;
if (ext.GetLength() > ext.GetHeight())
{
vec = diag.OrthoProjectTo(Vector3d.XAxis) * 0.5;
}
else
{
vec = diag.OrthoProjectTo(Vector3d.YAxis) * 0.5;
}
var startPt = ext.MinPoint + vec;
var endPt = ext.MaxPoint - vec;
if (isWindow)
{
var dir = (endPt - startPt).GetNormal();
return(new Line(startPt + dir * 25, endPt - dir * 25));
}
return(new Line(startPt, endPt));
}