easik.sketch.constraint
Class PullbackConstraint

java.lang.Object
  easik.sketch.vertex.SketchVertex
      easik.sketch.constraint.Constraint
          easik.sketch.constraint.PullbackConstraint

public class PullbackConstraint
extends Constraint

Class representing a pullback constraint.

Version:

2006-08-02 Kevin Green

Author:

Kevin Green 2006, Vera Ranieri 2006

Field Summary

Fields inherited from class easik.sketch.constraint.Constraint

_constraintLabel, _constraintNode, _edges, _isVisible, _paths, _visuals

Fields inherited from class easik.sketch.vertex.SketchVertex

_marked, _name, _posX, _posY

Constructor Summary

PullbackConstraint(java.util.ArrayList<SketchPath> inPaths)
Takes an ArrayList of paths, makes them a pullback.

PullbackConstraint(java.util.ArrayList<SketchPath> paths, int x, int y, boolean isVisible)
Takes an ArrayList of paths, makes them a pullback.

Method Summary

static boolean

isPullbackConstraint(java.util.ArrayList<SketchPath> paths) Method to determine whether a set of paths potentially forming a pullback constraint could legally form a pullback constraint.

Methods inherited from class easik.sketch.constraint.Constraint

addEdges, addVisualsToSketch, getEdges, getNode, getPaths, getTablesInvolvedForError, getType, hasEdge, isDomainOrCoDomain, isVisible, setAllConstraintsVisible, setNode, setVisible, toString

Methods inherited from class easik.sketch.vertex.SketchVertex

getMarked, getName, getX, getY, setMarked, setName, setX, setY

Methods inherited from class java.lang.Object

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

Constructor Detail

PullbackConstraint

public PullbackConstraint(java.util.ArrayList<SketchPath> inPaths)

Takes an ArrayList of paths, makes them a pullback.

Parameters:

inPaths - An ArrayList of SketchPaths

PullbackConstraint

public PullbackConstraint(java.util.ArrayList<SketchPath> paths,
                          int x,
                          int y,
                          boolean isVisible)

Takes an ArrayList of paths, makes them a pullback.

Parameters:

paths - An ArrayList of SketchPaths

x - X coordinate of visual aid

y - Y coordinate of visual aid

isVisible - If the constraint is visible in the graph or not

Method Detail

isPullbackConstraint

public static boolean isPullbackConstraint(java.util.ArrayList<SketchPath> paths)

Method to determine whether a set of paths potentially forming a pullback constraint could legally form a pullback constraint. Note: This method does not currently care about the order that the paths are selected.

Parameters:

paths - The set of potential paths

Returns:

True if a legal pullback configuration, false otherwise.

Since:

2006-05-25 Vera Ranieri