edu.mit.sketch.ddg
Class PositionConstraint

java.lang.Object
  edu.mit.sketch.ddg.Constraint
      edu.mit.sketch.ddg.BinaryRelationshipConstraint
          edu.mit.sketch.ddg.PositionConstraint

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable

public class PositionConstraint
extends BinaryRelationshipConstraint
implements java.io.Serializable

This class represents the relative position constraints (like "above") for lines, ellipses, and groups.

PositionConstraint.java Created: Sat Nov 21 18:26:00 2001

Author:

Olya Veselova

See Also:

Serialized Form

Field Summary

static int	ABOVE
static int	ABOVE_CENTERED
static int	BELOW
static int	INSIDE
static int	INSIDE_BOX
static int	INSIDE_CENTERED
static int	LEFT
static int	LOWER_LEFT
static int	LOWER_RIGHT
static int	NUM_CONSTRAINTS Total number of possible constraints (to allow iterating over the names)
static int	RIGHT
static int	RIGHT_CENTERED
static int	UPPER_LEFT
static int	UPPER_RIGHT

Constructor Summary

PositionConstraint()
Constructs an empty constraint graph.

PositionConstraint(int name)
Constructs an empty constraint graph.

PositionConstraint(java.lang.String name)
Constructs an empty constraint graph.

Method Summary

void	addConstraints(java.util.HashMap primToGeomParts, double[][] obstruction, PrimitiveList primitives) Infer the constraints from the users stroke geom parts and add them to the constraint graph.
void	addConstraints(java.util.HashMap primToGeomParts, GroupingTree group) Recursively looks at pairs of groups in the tree and initializes the relationship constraints.
static double	boxPosition(GeometricObject o1, GeometricObject o2, int position) Returns the confidence of a given spatial relationship between objects just based on their bounding box and center
boolean	centered() Whether the constraint is centered
java.lang.Object	clone() Clone the constraint
static double	constraintConfidence(DrawnObject object1, DrawnObject object2, int name) Returns the confidence that a given (by the name) constraint holds
static double	constraintConfidence(Ellipse e1, Ellipse e2, int name) Returns the confidence that the constraint with the given name holds between two primitives
static double	constraintConfidence(Ellipse e1, Line l2, int name) Returns the confidence that the constraint with the given name holds between two primitives
static double	constraintConfidence(Line l1, Ellipse e2, int name) Returns the confidence that the constraint with the given name holds between two primitives
static double	constraintConfidence(Line l1, Line l2, int name) Returns the confidence that the constraint with the given name holds between two primitives
static double	constraintRelevance(DrawnObject object, DrawnObject object2, int name) Returns the relevance of a given (by the name) constraint
java.lang.String	name() Name of the constraint type
boolean	orientationInvariant() Returns true if the constraint is orinetation invariant

Methods inherited from class edu.mit.sketch.ddg.Constraint

constraintGraph, labelledEdgeList, mergeIn, print, removeLowConfidence, removeLowRelevance, renamePrimitives, sameAs, setConstraintGraph, subgraph

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

ABOVE

public static final int ABOVE

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Constant Field Values

RIGHT

public static final int RIGHT

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Constant Field Values

BELOW

public static final int BELOW

See Also:

Constant Field Values

LEFT

public static final int LEFT

See Also:

Constant Field Values

UPPER_RIGHT

public static final int UPPER_RIGHT

See Also:

Constant Field Values

UPPER_LEFT

public static final int UPPER_LEFT

See Also:

Constant Field Values

LOWER_RIGHT

public static final int LOWER_RIGHT

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Constant Field Values

LOWER_LEFT

public static final int LOWER_LEFT

See Also:

Constant Field Values

ABOVE_CENTERED

public static final int ABOVE_CENTERED

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Constant Field Values

RIGHT_CENTERED

public static final int RIGHT_CENTERED

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Constant Field Values

INSIDE

public static final int INSIDE

See Also:

Constant Field Values

INSIDE_CENTERED

public static final int INSIDE_CENTERED

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Constant Field Values

INSIDE_BOX

public static final int INSIDE_BOX

See Also:

Constant Field Values

NUM_CONSTRAINTS

public static final int NUM_CONSTRAINTS

Total number of possible constraints (to allow iterating over the names)

See Also:

Constant Field Values

Constructor Detail

PositionConstraint

public PositionConstraint()

Constructs an empty constraint graph.

PositionConstraint

public PositionConstraint(int name)

Constructs an empty constraint graph.

PositionConstraint

public PositionConstraint(java.lang.String name)

Constructs an empty constraint graph.

Method Detail

orientationInvariant

public boolean orientationInvariant()

Returns true if the constraint is orinetation invariant

Specified by:

orientationInvariant in class BinaryRelationshipConstraint

addConstraints

public void addConstraints(java.util.HashMap primToGeomParts,
                           double[][] obstruction,
                           PrimitiveList primitives)

Infer the constraints from the users stroke geom parts and add them to the constraint graph. HashMap: type of key: Primitive, type of value: GeometricObject

addConstraints

public void addConstraints(java.util.HashMap primToGeomParts,
                           GroupingTree group)

Recursively looks at pairs of groups in the tree and initializes the relationship constraints.

boxPosition

public static double boxPosition(GeometricObject o1,
                                 GeometricObject o2,
                                 int position)

Returns the confidence of a given spatial relationship between objects just based on their bounding box and center

constraintConfidence

public static double constraintConfidence(DrawnObject object1,
                                          DrawnObject object2,
                                          int name)

Returns the confidence that a given (by the name) constraint holds

constraintConfidence

public static double constraintConfidence(Line l1,
                                          Line l2,
                                          int name)

Returns the confidence that the constraint with the given name holds between two primitives

constraintConfidence

public static double constraintConfidence(Ellipse e1,
                                          Ellipse e2,
                                          int name)

Returns the confidence that the constraint with the given name holds between two primitives

constraintConfidence

public static double constraintConfidence(Line l1,
                                          Ellipse e2,
                                          int name)

Returns the confidence that the constraint with the given name holds between two primitives

constraintConfidence

public static double constraintConfidence(Ellipse e1,
                                          Line l2,
                                          int name)

Returns the confidence that the constraint with the given name holds between two primitives

constraintRelevance

public static double constraintRelevance(DrawnObject object,
                                         DrawnObject object2,
                                         int name)

Returns the relevance of a given (by the name) constraint

name

public java.lang.String name()

Name of the constraint type

Specified by:

name in class BinaryRelationshipConstraint

centered

public boolean centered()

Whether the constraint is centered

clone

public java.lang.Object clone()

Clone the constraint

Specified by:

clone in class BinaryRelationshipConstraint