main/src/georegression/struct/line/LineParametric3D_F64.java
public void setPointOnLine( double t , Point3D_F64 where ) {
		where.x = p.x + t*slope.x;
		where.y = p.y + t*slope.y;
		where.z = p.z + t*slope.z;
	}
public void setPointOnLine( double t , Point3D_F64 where ) {
		where.x = p.x + t*slope.x;
		where.y = p.y + t*slope.y;
		where.z = p.z + t*slope.z;
	}
where = p + t*slope.