Defines a 3-Node (P1
) triangle.
More...


Public Member Functions | |
Triang3 () | |
Default Constructor. | |
Triang3 (const Element *el) | |
Constructor for an element. More... | |
Triang3 (const Side *sd) | |
Constructor for a side. More... | |
~Triang3 () | |
Destructor. | |
void | set (const Element *el) |
Choose element by giving its pointer. | |
void | set (const Side *sd) |
Choose side by giving its pointer. | |
real_t | Sh (size_t i, Point< real_t > s) const |
Calculate shape function of node at a given point. More... | |
Point< real_t > | DSh (size_t i) const |
Calculate derivatives of shape function of node i | |
real_t | getInterpolate (const Point< real_t > &x, const LocalVect< real_t, 3 > &v) |
Return interpolated value at point of coordinate x | |
real_t | check () const |
Check element area and number of nodes. More... | |
Point< real_t > | Grad (const LocalVect< real_t, 3 > &u) const |
Return constant gradient vector in triangle. More... | |
real_t | getMaxEdgeLength () const |
Return maximal edge length of triangle. | |
real_t | getMinEdgeLength () const |
Return minimal edge length of triangle. | |
real_t | getArea () |
Return element area. | |
Point< real_t > | getCenter () const |
Return coordinates of center of element. | |
Point< real_t > | getCircumcenter () const |
Return coordinates of circumcenter of element. | |
real_t | getCircumRadius () const |
Return radius of circumscribed circle of triangle. | |
real_t | getInRadius () const |
Return radius of inscribed circle of triangle. | |
Point< real_t > | getRefCoord (const Point< real_t > &x) const |
Return reference coordinates of a point x in element. | |
bool | isIn (const Point< real_t > &x) const |
Check whether point x is in current triangle or not. | |
bool | isStrictlyIn (const Point< real_t > &x) const |
Check whether point x is strictly in current triangle (not on the boundary) or not. | |
real_t | Sh (size_t i) const |
Return shape function of node i at given point. | |
real_t | getDet () const |
Return determinant of jacobian. More... | |
Point< real_t > | getLocalPoint () const |
Localize a point in the element. More... | |
Point< real_t > | getLocalPoint (const Point< real_t > &s) const |
Localize a point in the element. More... | |
Detailed Description
Defines a 3-Node (P1
) triangle.
The reference element is the rectangle triangle with two unit edges.
Constructor & Destructor Documentation
Constructor for an element.
The constructed triangle is an element in a 2-D mesh.
Constructor for a side.
The constructed triangle is a side in a 3-D mesh.
Member Function Documentation
Calculate shape function of node at a given point.
- Parameters
-
[in] i Label (local) of node [in] s Natural coordinates of node where to evaluate
real_t check | ( | ) | const |
Check element area and number of nodes.
- Returns
-
> 0
: m is the length -
= 0
: zero length (=> Error)
-
Return constant gradient vector in triangle.
- Parameters
-
[in] u Local vector for which the gradient is evaluated
|
inherited |
Return determinant of jacobian.
If the transformation (Reference element -> Actual element) is not affine, member function setLocal() must have been called before in order to calcuate relevant quantities.
Localize a point in the element.
Return actual coordinates in the reference element. If the transformation (Reference element -> Actual element) is not affine, member function setLocal() must have been called before in order to calcuate relevant quantities.