private void ExpandBase(Coordinate endPoint)
{
var axis = _base.Plane.GetClosestAxisToNormal();
var start = _base.Vertices[0] - _base.Vertices[0].ComponentMultiply(axis);
var end = endPoint - endPoint.ComponentMultiply(axis);
var diff = end - start;
Coordinate addx, addy;
if (axis == Coordinate.UnitX)
{
addx = diff.ComponentMultiply(Coordinate.UnitY);
addy = diff.ComponentMultiply(Coordinate.UnitZ);
}
else if (axis == Coordinate.UnitY)
{
addx = diff.ComponentMultiply(Coordinate.UnitX);
addy = diff.ComponentMultiply(Coordinate.UnitZ);
}
else
{
addx = diff.ComponentMultiply(Coordinate.UnitX);
addy = diff.ComponentMultiply(Coordinate.UnitY);
}
var linex = new Line(start + addx, start + addx + axis);
var liney = new Line(start + addy, start + addy + axis);
_base.Vertices[1] = _base.Plane.GetIntersectionPoint(linex, true, true);
_base.Vertices[2] = endPoint;
_base.Vertices[3] = _base.Plane.GetIntersectionPoint(liney, true, true);
}