Package org.gvsig.vectorediting.lib.prov.extendline.operation

Class ExtendLineOperationUtils

java.lang.Object

org.gvsig.vectorediting.lib.prov.extendline.operation.ExtendLineOperationUtils

public class ExtendLineOperationUtils
extends Object

Author:

llmarques

Field Summary

Fields

Modifier and Type	Field	Description
static final String	END_SIDE	Use it to indicate end side should be extended
static final String	START_SIDE	Use it to indicate start side should be extended

Constructor Summary

Constructors

Constructor	Description
ExtendLineOperationUtils()

Method Summary

Modifier and Type	Method	Description
static org.gvsig.fmap.geom.primitive.Point	arcIntersection(org.gvsig.fmap.geom.primitive.Arc arcToBeExtended, String sideToExtend, org.gvsig.fmap.dal.feature.FeatureSelection boundaryObjects)	Calculates the nearest intersection point among arc and boundary objects depending on side received as parameter.Strategy: 1- Create a full arc with the same center and radius of arc received by parameter.2- Iterate over boundary objects.3- If some boundary object intersects with full arc, calculates the distance to start point or end point depending on side to be extend.4- Return the nearest intersection point.
static org.gvsig.fmap.geom.primitive.Point	arcIntersection(org.gvsig.fmap.geom.primitive.Arc arcToBeExtended, String sideToExtend, org.gvsig.fmap.geom.Geometry boundaryObject)	Calculates the nearest intersection point among arc and boundary objects depending on side received as parameter.Strategy: 1- Create a full arc with the same center and radius of arc received by parameter.2- Iterate over boundary objects.3- If some boundary object intersects with full arc, calculates the distance to start point or end point depending on side to be extend.4- Return the nearest intersection point.
static org.gvsig.fmap.geom.primitive.Point	curveIntersection(org.gvsig.fmap.geom.primitive.Curve line, String sideToExtend, org.gvsig.fmap.dal.feature.FeatureSelection boundaryObjects)	Calculates the nearest intersection among curve and boundary objects depending on side received as parameter.
static org.gvsig.fmap.geom.primitive.Point	curveIntersection(org.gvsig.fmap.geom.primitive.Curve line, String sideToExtend, org.gvsig.fmap.geom.Geometry boundaryObject)	Calculates the nearest intersection among curve and boundary objects depending on side received as parameter.
static double	getAngle(org.gvsig.fmap.geom.primitive.Point start, org.gvsig.fmap.geom.primitive.Point end)
static org.gvsig.fmap.geom.primitive.Point	getIntersectionOfProjectedLine(org.gvsig.fmap.geom.primitive.Point initPoint, org.gvsig.fmap.geom.primitive.Point endPoint, org.gvsig.fmap.dal.feature.FeatureSelection boundaryObjects)	Gets intersection among the line formed by initPoint and endPoint and boundary objects.If line or its projection does not intersect with any boundary object return null.Strategy: 1- Get module of line to determine if an intersection point already be vertex of line.If the distance between intersection point and start point of line is less than module indicates that intersection point already be curve point.2- Project line with the line parametric equation. 3- Iterate over boundary objects. 4- Check if boundary object does not contains end point of projected line. 5- If projected line intersects with any boundary object, get the nearest intersection point 6- Return it.
static org.gvsig.fmap.geom.primitive.Point	getIntersectionOfProjectedLine(org.gvsig.fmap.geom.primitive.Point initPoint, org.gvsig.fmap.geom.primitive.Point endPoint, org.gvsig.fmap.geom.Geometry boundaryObject)	Gets intersection among the line formed by initPoint and endPoint and boundary object.If line or its projection does not intersect with boundary object return null.Strategy: 1- Get module of line to determine if an intersection point already be vertex of line.If the distance between intersection point and start point of line is less than module indicates that intersection point already be curve point.2- Project line with the line parametric equation. 3- Check if boundary object does not contains end point of projected line. 5- If projected line intersects with boundary object, get the nearest intersection point 6- Return it.
static ExtendLineOperation	getOperation(org.gvsig.fmap.geom.primitive.Primitive geom)
static void	register(ExtendLineOperation operation, int geometryType)

Methods inherited from class java.lang.Object

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

Field Details

START_SIDE

public static final String START_SIDE

Use it to indicate start side should be extended

See Also:

• Constant Field Values

END_SIDE

public static final String END_SIDE

Use it to indicate end side should be extended

See Also:

• Constant Field Values

Constructor Details

ExtendLineOperationUtils

public ExtendLineOperationUtils()

Method Details

register

public static void register(ExtendLineOperation operation,
 int geometryType)

getOperation

public static ExtendLineOperation getOperation(org.gvsig.fmap.geom.primitive.Primitive geom)

curveIntersection

public static org.gvsig.fmap.geom.primitive.Point curveIntersection(org.gvsig.fmap.geom.primitive.Curve line,
 String sideToExtend,
 org.gvsig.fmap.dal.feature.FeatureSelection boundaryObjects)
                                                             throws org.gvsig.fmap.geom.exception.CreateGeometryException,
org.gvsig.fmap.dal.exception.DataException,
org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException,
org.gvsig.fmap.geom.operation.GeometryOperationException

Calculates the nearest intersection among curve and boundary objects depending on side received as parameter.

Parameters:

line - to be extended

sideToExtend - What side will be extend. Use START_SIDE and END_SIDE

boundaryObjects - to calculate intersection points.

Returns:

the nearest intersection point. Return Null if arc does not intersect with any boundary object

Throws:

org.gvsig.fmap.geom.exception.CreateGeometryException

org.gvsig.fmap.dal.exception.DataException

org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException

org.gvsig.fmap.geom.operation.GeometryOperationException

curveIntersection

public static org.gvsig.fmap.geom.primitive.Point curveIntersection(org.gvsig.fmap.geom.primitive.Curve line,
 String sideToExtend,
 org.gvsig.fmap.geom.Geometry boundaryObject)
                                                             throws org.gvsig.fmap.geom.GeometryException,
org.gvsig.fmap.dal.exception.DataException,
org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException,
org.gvsig.fmap.geom.operation.GeometryOperationException

Calculates the nearest intersection among curve and boundary objects depending on side received as parameter.

Parameters:

line - to be extended

sideToExtend - What side will be extend. Use START_SIDE and END_SIDE

boundaryObject - to calculate intersection points.

Returns:

the nearest intersection point. Return Null if arc does not intersect with any boundary object

Throws:

org.gvsig.fmap.geom.exception.CreateGeometryException

org.gvsig.fmap.dal.exception.DataException

org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException

org.gvsig.fmap.geom.operation.GeometryOperationException

org.gvsig.fmap.geom.GeometryException

arcIntersection

public static org.gvsig.fmap.geom.primitive.Point arcIntersection(org.gvsig.fmap.geom.primitive.Arc arcToBeExtended,
 String sideToExtend,
 org.gvsig.fmap.dal.feature.FeatureSelection boundaryObjects)
                                                           throws org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException,
org.gvsig.fmap.geom.operation.GeometryOperationException,
org.gvsig.fmap.geom.exception.CreateGeometryException,
org.gvsig.fmap.dal.exception.DataException

Calculates the nearest intersection point among arc and boundary objects depending on side received as parameter.Strategy: 1- Create a full arc with the same center and radius of arc received by parameter.2- Iterate over boundary objects.3- If some boundary object intersects with full arc, calculates the distance to start point or end point depending on side to be extend.4- Return the nearest intersection point.

Parameters:

arcToBeExtended - Arc to be extended

sideToExtend - What side will be extend. Use START_SIDE and END_SIDE

boundaryObjects - to calculate intersection points.

Returns:

the nearest intersection point. Return Null if arc does not intersect with any boundary object

Throws:

org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException

org.gvsig.fmap.geom.operation.GeometryOperationException

org.gvsig.fmap.geom.exception.CreateGeometryException

org.gvsig.fmap.dal.exception.DataException

arcIntersection

public static org.gvsig.fmap.geom.primitive.Point arcIntersection(org.gvsig.fmap.geom.primitive.Arc arcToBeExtended,
 String sideToExtend,
 org.gvsig.fmap.geom.Geometry boundaryObject)
                                                           throws org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException,
org.gvsig.fmap.geom.operation.GeometryOperationException,
org.gvsig.fmap.geom.exception.CreateGeometryException,
org.gvsig.fmap.dal.exception.DataException

Calculates the nearest intersection point among arc and boundary objects depending on side received as parameter.Strategy: 1- Create a full arc with the same center and radius of arc received by parameter.2- Iterate over boundary objects.3- If some boundary object intersects with full arc, calculates the distance to start point or end point depending on side to be extend.4- Return the nearest intersection point.

Parameters:

arcToBeExtended - Arc to be extended

sideToExtend - What side will be extend. Use START_SIDE and END_SIDE

boundaryObject - to calculate intersection points.

Returns:

the nearest intersection point. Return Null if arc does not intersect with any boundary object

Throws:

org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException

org.gvsig.fmap.geom.operation.GeometryOperationException

org.gvsig.fmap.geom.exception.CreateGeometryException

org.gvsig.fmap.dal.exception.DataException

getAngle

public static double getAngle(org.gvsig.fmap.geom.primitive.Point start,
 org.gvsig.fmap.geom.primitive.Point end)
                       throws org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException,
org.gvsig.fmap.geom.operation.GeometryOperationException

Throws:

org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException

org.gvsig.fmap.geom.operation.GeometryOperationException

getIntersectionOfProjectedLine

public static org.gvsig.fmap.geom.primitive.Point getIntersectionOfProjectedLine(org.gvsig.fmap.geom.primitive.Point initPoint,
 org.gvsig.fmap.geom.primitive.Point endPoint,
 org.gvsig.fmap.dal.feature.FeatureSelection boundaryObjects)
                                                                          throws org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException,
org.gvsig.fmap.geom.operation.GeometryOperationException,
org.gvsig.fmap.dal.exception.DataException,
org.gvsig.fmap.geom.exception.CreateGeometryException

Gets intersection among the line formed by initPoint and endPoint and boundary objects.If line or its projection does not intersect with any boundary object return null.Strategy: 1- Get module of line to determine if an intersection point already be vertex of line.If the distance between intersection point and start point of line is less than module indicates that intersection point already be curve point.2- Project line with the line parametric equation. 3- Iterate over boundary objects. 4- Check if boundary object does not contains end point of projected line. 5- If projected line intersects with any boundary object, get the nearest intersection point 6- Return it.

Parameters:

initPoint - of curve to extend

endPoint - end point of curve to extend

boundaryObjects - to calculate intersection points.

Returns:

the nearest intersection point. Return Null if arc does not intersect with any boundary object

Throws:

org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException

org.gvsig.fmap.geom.operation.GeometryOperationException

org.gvsig.fmap.dal.exception.DataException

org.gvsig.fmap.geom.exception.CreateGeometryException

getIntersectionOfProjectedLine

public static org.gvsig.fmap.geom.primitive.Point getIntersectionOfProjectedLine(org.gvsig.fmap.geom.primitive.Point initPoint,
 org.gvsig.fmap.geom.primitive.Point endPoint,
 org.gvsig.fmap.geom.Geometry boundaryObject)
                                                                          throws org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException,
org.gvsig.fmap.geom.operation.GeometryOperationException,
org.gvsig.fmap.dal.exception.DataException,
org.gvsig.fmap.geom.GeometryException

Gets intersection among the line formed by initPoint and endPoint and boundary object.If line or its projection does not intersect with boundary object return null.Strategy: 1- Get module of line to determine if an intersection point already be vertex of line.If the distance between intersection point and start point of line is less than module indicates that intersection point already be curve point.2- Project line with the line parametric equation. 3- Check if boundary object does not contains end point of projected line. 5- If projected line intersects with boundary object, get the nearest intersection point 6- Return it.

Parameters:

initPoint - of curve to extend

endPoint - end point of curve to extend

boundaryObject - to calculate intersection points.

Returns:

the nearest intersection point. Return Null if arc does not intersect with any boundary object

Throws:

org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException

org.gvsig.fmap.geom.operation.GeometryOperationException

org.gvsig.fmap.dal.exception.DataException

org.gvsig.fmap.geom.exception.CreateGeometryException

org.gvsig.fmap.geom.GeometryException