devisor2.foundation.elements
Class Tri

java.lang.Object
  devisor2.foundation.GridItem
      devisor2.foundation.elements.Cell
          devisor2.foundation.elements.Cell2D
              devisor2.foundation.elements.Tri

All Implemented Interfaces:

java.io.Serializable

public class Tri

extends Cell2D

implements java.io.Serializable

The class Tri represents the cells of the discrete domain which have 3 nodes. This class is derived from Cell2D.

See Also:

Cell, Quad, Macro, Serialized Form

Field Summary

Fields inherited from class devisor2.foundation.elements.Cell2D

edges, poly_world

Fields inherited from class devisor2.foundation.elements.Cell

children, level, marker, material_number, matrixblock, neighbours, nodes, number, parallelblock, parameters, parent, values

Fields inherited from class devisor2.foundation.GridItem

cc, marked, transformed, xmax, xmin, ymax, ymin

Constructor Summary

Tri()
Empty constructor.

Tri(Edge e1, Edge e2, Edge e3)

Tri(int i, Edge e1, Edge e2, Edge e3)
Calls one constructor of Cell, and defines the array of nodes of the cell.

Method Summary

java.lang.Object	clone() clones this Tri element shallowly, which means no nodes are recursivly cloned as well.
void	draw(java.awt.Graphics g) Draws the perimeter of the Tri.
void	fill(java.awt.Graphics g) Draws the Tri filled with its color.
double	getArea() calculates and returns the area (size) of the element
double	getAspectRatio() calculates the aspect ratio of the element, that is the quotient of the shortest and the longest edge
Edge	getEdge(int i) Returns the ith edge of the cell modulo NPT, i.e.
int	getNPT()
double[]	getParameters() returns all parameters of the griditem in an int array
java.awt.Rectangle	getPerimeter() returns the perimeter of the Tri element, that is the smallest bounding box completely containing the Tri
double	getSmallestInnerAngle() calculates and returns the smallest inner angle of the element.
boolean	isHit(int x, int y) Determines if the item has been hit by a click on the grid ALL IN WORLD COORDINATES
boolean	isInside(int[] topleft, int[] bottomright) Is the tri completely inside a given rectangular area? All in WORLD COORDINATES!!!
void	performMirror(double nx, double ny, double px, double py) mirrors the Tri element by changing all nodes
void	performTransformation(GridTransformation trafo) transforms the Tri element by changing all nodes
void	setCell(Edge e1, Edge e2, Edge e3) Defines the array of nodes of the cell.
void	setParameters(double[] params) sets all parameters of the GridItem according to the given int array
java.lang.String	toString()
void	updateInnerData() updates the inner variables xmin, xmax, ymin, ymax and the polygonal representation of the tri object

Methods inherited from class devisor2.foundation.elements.Cell2D

getEdges, getNode, getNodes, setCell, setCell, setEdge, setNode, updateCellNeighbours, updateCellNodes

Methods inherited from class devisor2.foundation.elements.Cell

defValue, getChildren, getLevel, getMarker, getMatrixBlock, getNeighbours, getNodeAverageValue, getNumber, getParallelBlock, getParent, getValue, isRect, setLevel, setMarker, setMatrixBlock, setNumber, setParallelBlock, setValue

Methods inherited from class devisor2.foundation.GridItem

clearTransformedFlag, isMarked, setMarker, setMarker, unsetMarker

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Tri

public Tri()

Empty constructor. Calls the empty constructor of Cell, and defines the array of nodes of the cell.

See Also:

Cell

Tri

public Tri(Edge e1,
           Edge e2,
           Edge e3)

Tri

public Tri(int i,
           Edge e1,
           Edge e2,
           Edge e3)

Calls one constructor of Cell, and defines the array of nodes of the cell.

See Also:

Cell

Method Detail

getParameters

public double[] getParameters()

Description copied from class: GridItem

returns all parameters of the griditem in an int array

Specified by:

getParameters in class GridItem

setParameters

public void setParameters(double[] params)

Description copied from class: GridItem

sets all parameters of the GridItem according to the given int array

Specified by:

setParameters in class GridItem

getNPT

public int getNPT()

Specified by:

getNPT in class Cell

setCell

public void setCell(Edge e1,
                    Edge e2,
                    Edge e3)

Defines the array of nodes of the cell.

See Also:

Node

getEdge

public Edge getEdge(int i)

Returns the ith edge of the cell modulo NPT, i.e. for a Tri modulo 3.

Specified by:

getEdge in class Cell2D

See Also:

Edge

updateInnerData

public void updateInnerData()

updates the inner variables xmin, xmax, ymin, ymax and the polygonal representation of the tri object

Specified by:

updateInnerData in class Cell2D

draw

public void draw(java.awt.Graphics g)

Draws the perimeter of the Tri.

Specified by:

draw in class Cell2D

fill

public void fill(java.awt.Graphics g)

Draws the Tri filled with its color.

Specified by:

fill in class Cell

See Also:

Cell

isInside

public boolean isInside(int[] topleft,
                        int[] bottomright)

Is the tri completely inside a given rectangular area? All in WORLD COORDINATES!!!

Specified by:

isInside in class Cell2D

Parameters:

topleft - - the topleft corner of the rectangle

bottomright - - the bottom right corner of the rectangle

Returns:

true if the item is completely inside the rectangle

isHit

public boolean isHit(int x,
                     int y)

Determines if the item has been hit by a click on the grid ALL IN WORLD COORDINATES

Specified by:

isHit in class Cell2D

Returns:

true if the item has been hit

getPerimeter

public java.awt.Rectangle getPerimeter()

returns the perimeter of the Tri element, that is the smallest bounding box completely containing the Tri

Specified by:

getPerimeter in class Cell2D

performTransformation

public void performTransformation(GridTransformation trafo)

transforms the Tri element by changing all nodes

Specified by:

performTransformation in class Cell2D

performMirror

public void performMirror(double nx,
                          double ny,
                          double px,
                          double py)

mirrors the Tri element by changing all nodes

Specified by:

performMirror in class GridItem

clone

public java.lang.Object clone()

clones this Tri element shallowly, which means no nodes are recursivly cloned as well. See the GridCloner class in the backend package for more information on how cloning of entire collections is performed.

Specified by:

clone in class Cell2D

toString

public java.lang.String toString()

getSmallestInnerAngle

public double getSmallestInnerAngle()

calculates and returns the smallest inner angle of the element.

Specified by:

getSmallestInnerAngle in class Cell2D

Returns:

a double representing an angle in degrees!

getAspectRatio

public double getAspectRatio()

calculates the aspect ratio of the element, that is the quotient of the shortest and the longest edge

Specified by:

getAspectRatio in class Cell2D

getArea

public double getArea()

calculates and returns the area (size) of the element

Specified by:

getArea in class Cell2D