fmeobjects.FMEMultiArea

`FMEMultiArea.appendPart`(area)	This appends the area to the MultiArea.
`FMEMultiArea.appendParts`(multiArea)	This appends the MultiArea passed in to the existing MultiArea.
`FMEMultiArea.boundingBox`()	This method returns the bounding box of the geometry.
`FMEMultiArea.boundingCube`()	This method returns the bounding cube of the geometry.
`FMEMultiArea.bounds`()	Returns the bounds of the geometry.
`FMEMultiArea.clearMeasures`()	Remove all measures from the geometry.
`FMEMultiArea.copyAttributesFromFeature`(...)	Copies all the attributes from the given feature to traits on this geometry, if they match the (optional) regular expression.
`FMEMultiArea.copyNameFromGeometry`(sourceGeometry)	Copies the name of the 'sourceGeometry' onto this geometry.
`FMEMultiArea.copyTraitsFromGeometry`(...)	Copies all the traits from the given geometry that match the (optional) regular expression.
`FMEMultiArea.copyTraitsToFeature`(...)	Copies all the traits from this geometry to attributes on the given feature, if they match the (optional) regular expression.
`FMEMultiArea.deleteName`()	Deletes the geometry's name.
`FMEMultiArea.force2D`()	Reduces the geometry to 2D.
`FMEMultiArea.force3D`(newZ)	This sets the geometry's dimension to 3D.
`FMEMultiArea.getArea`()	Area calculation.
`FMEMultiArea.getMeasureNames`()	Retrieve the names of the measures on this geometry.
`FMEMultiArea.getName`()	This routine retrieves the 'name' of this geometry as a `str`.
`FMEMultiArea.getPartAt`(index)	This method returns the area at the given index.
`FMEMultiArea.getTrait`(traitName)	Retrieves the geometry trait value of the specified trait name.
`FMEMultiArea.getTraitNames`()	Retrieve the names of the traits on this geometry.
`FMEMultiArea.getTraitNullMissingAndType`(...)	This method returns a tuple of a boolean, indicating if the trait is null, a boolean, indicating if the trait is missing, and an integer representing the type of the trait.
`FMEMultiArea.getTraitType`(traitName)	Returns the type of given trait.
`FMEMultiArea.hasMeasures`()	Check if this geometry or any sub part of this geometry has measures.
`FMEMultiArea.hasName`()	Returns whether or not the geometry has a name.
`FMEMultiArea.is3D`()	Returns whether or not the geometry is 3D.
`FMEMultiArea.isCollection`()	Check if the geometry is an aggregate or multi-part collection.
`FMEMultiArea.isInPlane`(tolerance, ...)	Works similarly to `isPlanar()`, but checks planarity with respect to given normal or given plane (if plane equation D is specified - see below).
`FMEMultiArea.isPlanar`(tolerance)	Returns `True` if this is planar within the given tolerance, and `False` otherwise.
`FMEMultiArea.measureExists`(measureName)	Returns `True` if the specified measure exists and `False` otherwise.
`FMEMultiArea.numParts`()	This returns the number of areas that make up this MultiArea.
`FMEMultiArea.offset`(offsetPoint)	Offsets the geometry by the coords specified by 'offsetPoint'.
`FMEMultiArea.removeLastPart`()	This removes and returns the last area of the MultiArea.
`FMEMultiArea.removeMeasure`(measureName)	Removes the measure with name 'measureName' if supplied, or the default measure, if there is one.
`FMEMultiArea.removeTraits`(regexp)	This method has 4 modes:
`FMEMultiArea.renameMeasure`(oldMeasureName, ...)	Renames the measure specified by 'oldMeasureName' to the new name, specified by 'newMeasureName'.
`FMEMultiArea.rotate2D`(center, angle)	The angle is CCW up from the horizontal and is measured in degrees.
`FMEMultiArea.scale`(xscale, yscale, zscale)	Applies a scale factor to the MultiArea.
`FMEMultiArea.setName`(name)	Sets the geometry's name with a `str`.
`FMEMultiArea.setTrait`(traitName, traitValue)	Sets a geometry trait with the specified value.
`FMEMultiArea.setTraitNullWithType`(traitName, ...)	This method supplies a null trait value with a type to the geometry.

class FMEMultiArea

FME Multi-Area Class

Create an instance of a Multi-Area geometry object.

init()

Default FMEMultiArea constructor.

Return type:: FMEMultiArea
Returns:: An instance of a MultiArea geometry object.

init(multiArea)

Create a copy of the passed in Multi-Area geometry object.

Parameters:: multiArea (FMEMultiArea) – The Multi-Area geometry object to create a copy of.
Return type:: FMEMultiArea
Returns:: An instance of a MultiArea Geometry object.

__init__(*args, **kwargs)

appendPart(area)

This appends the area to the MultiArea. If None is passed in, nothing will be appended. All areas in the MultiArea will be forced to have the same dimension. If any 3D areas exist, all 2D areas will be converted to 3D with a default Z value of 0.0.

Parameters:: area (FMEArea) – The area to be appended.
Return type:: None
Raises:: FMEException – An exception is raised if an error occurred.

appendParts(multiArea)

This appends the MultiArea passed in to the existing MultiArea. If None is passed in, nothing will be appended.

Parameters:: multiArea (FMEMultiArea) – The MultiArea to be appended.
Return type:: None
Raises:: FMEException – An exception is raised if an error occurred.

boundingBox()

This method returns the bounding box of the geometry.

Return type:: tuple[tuple[float]]
Returns:: The bounding box of the Geometry, in the form ((minx, miny), (maxx, maxy)).

boundingCube()

This method returns the bounding cube of the geometry.

Return type:: tuple[tuple[float]]
Returns:: The bounding box of the Geometry, in the form ((minx, miny, minz), (maxx, maxy, maxz)).

bounds()

Returns the bounds of the geometry.

Return type:: tuple[FMEPoint]
Returns:: The min point and max point of the bounds. None is returned if the geometry contains no points.

clearMeasures()

Remove all measures from the geometry.

Return type:: None

copyAttributesFromFeature(sourceFeature, overwriteExisting, regexp, prefix)

Copies all the attributes from the given feature to traits on this geometry, if they match the (optional) regular expression.

Parameters:

sourceFeature (FMEFeature) – The feature to copy attributes from.
overwriteExisting (bool) – Existing traits will be overwritten only if overwriteExisting is True.
regexp (str) – (Optional) The regular expression to match the attributes against. If regexp is not specified, then all attributes will be copied.
prefix (str) – (Optional) The prefix is put on all the trait names as they are copied. If it is not specified, a prefix will not be added to the trait names.

Return type:

None

copyNameFromGeometry(sourceGeometry)

Copies the name of the ‘sourceGeometry’ onto this geometry. If ‘sourceGeometry’s name is blank or None, this geometry’s name will become None.

Parameters:: sourceGeometry (FMEGeometry) – The geometry to copy the name from.
Return type:: None

copyTraitsFromGeometry(sourceGeometry, overwriteExisting, regexp, prefix)

Copies all the traits from the given geometry that match the (optional) regular expression.

Parameters:

sourceGeometry (FMEGeometry) – The geometry to copy traits from.
overwriteExisting (bool) – Existing traits will be overwritten only if overwriteExisting is True.
regexp (str) – (Optional) The regular expression to match the traits against. If regexp is not specified, or is an empty string, then all traits will be copied.
prefix (str) – (Optional) The prefix is put on all the trait names as they are copied. If it is not specified, a prefix will not be added to the trait names.

Return type:

None

copyTraitsToFeature(destFeature, overwriteExisting, regexp, prefix)

Copies all the traits from this geometry to attributes on the given feature, if they match the (optional) regular expression.

Parameters:

destFeature (FMEFeature) – The feature to copy traits to.
overwriteExisting (bool) – Existing attributes will be overwritten only if overwriteExisting is True.
regexp (str) – (Optional) The regular expression to match the traits against. If regexp is not specified, or is an empty string, then all traits will be copied.
prefix (str) – (Optional) The prefix is put on all the attribute names as they are copied. If it is not specified, a prefix will not be added to the attribute names.

Return type:

None

deleteName()

Deletes the geometry’s name. If a name existed prior to this call then True is returned; otherwise False is returned.

Return type:: bool
Returns:: Returns a boolean indicating whether or not the name existed before deletion.

force2D()

Reduces the geometry to 2D.

Return type:: None

force3D(newZ)

This sets the geometry’s dimension to 3D. All Z values are set to the value passed in, even if the geometry is already 3D.

Parameters:: newZ (float) – The new Z value.
Return type:: None

getArea()

Area calculation.

Return type:: float
Returns:: The calculated area.

getMeasureNames()

Retrieve the names of the measures on this geometry.

Return type:: tuple[str]
Returns:: Return a tuple storing the names of the measures on this geometry. This will return an empty tuple if there are no measures. For FMEAggregate, FMEMultiSurface, and FMECompositeSurface, this will return the union of all measure names of all of its parts.

getName()

This routine retrieves the ‘name’ of this geometry as a str. This will return None if it did not have a name associated with it.

Return type:: str or None
Returns:: The geometry’s name.

getPartAt(index)

This method returns the area at the given index. None is returned if the index is out of range.

Parameters:: index (int) – The index of the area part to return.
Return type:: FMEArea or None
Returns:: The area at the given index. Note: This method returns a terminal area type of the FMEArea; i.e. one of the leaf classes in the FMEArea inheritance graph. For example, a FMEPolygon is returned if the area truly is a polygon.
Raises:: FMEException – An exception is raised if an error occurred.

getTrait(traitName)

Retrieves the geometry trait value of the specified trait name. Null trait values will be returned as an empty string. Binary blob traits are returned as a bytearray.

None is returned when the trait is not found on the geometry.

Parameters:: traitName (str) – The name of the geometry trait.
Return type:: bool, int, float, str, bytearray, bytes or None
Returns:: The trait value.
Raises:: FMEException – An exception is raised if there was a problem in retrieving the trait value.

getTraitNames()

Retrieve the names of the traits on this geometry.

Return type:: tuple[str]
Returns:: Return a tuple storing the names of the traits on this geometry. This will return an empty tuple if there are no traits. For all collections and containers, this will only return the names of traits on the outermost object only.

getTraitNullMissingAndType(traitName)

This method returns a tuple of a boolean, indicating if the trait is null, a boolean, indicating if the trait is missing, and an integer representing the type of the trait. The first boolean is True if ‘traitName’ maps to a null trait value on the geometry. Otherwise it is False. The second boolean is True if ‘traitName’ maps to a no value on the geometry. Otherwise it is False. If the trait is absent, FME_ATTR_UNDEFINED is returned for the type.

The possible trait types are FME_ATTR_UNDEFINED, FME_ATTR_BOOLEAN, FME_ATTR_INT8, FME_ATTR_UINT8, FME_ATTR_INT16, FME_ATTR_UINT16, FME_ATTR_INT32, FME_ATTR_UINT32, FME_ATTR_REAL32, FME_ATTR_REAL64, FME_ATTR_REAL80, FME_ATTR_STRING, FME_ATTR_ENCODED_STRING, FME_ATTR_INT64, FME_ATTR_UINT64.

Parameters:: traitName (str) – The trait’s name.
Return type:: tuple[bool, bool, int]
Returns:: A tuple of 2 boolean values the first indicating whether or not the value of the trait is null, the second indicating whether or not the trait is missing, and an integer representing the trait type.

getTraitType(traitName)

Returns the type of given trait. If the trait cannot be found, FME_ATTR_UNDEFINED will be returned.

Returns one of FME_ATTR_UNDEFINED, FME_ATTR_BOOLEAN, FME_ATTR_INT8, FME_ATTR_UINT8, FME_ATTR_INT16, FME_ATTR_UINT16, FME_ATTR_INT32, FME_ATTR_UINT32, FME_ATTR_REAL32, FME_ATTR_REAL64, FME_ATTR_REAL80, FME_ATTR_STRING, FME_ATTR_ENCODED_STRING, FME_ATTR_INT64, FME_ATTR_UINT64.

Parameters:: traitName (str) – The trait’s name.
Return type:: int
Returns:: The trait type.

hasMeasures()

Check if this geometry or any sub part of this geometry has measures.

Return type:: bool
Returns:: True if this geometry or any sub part of this geometry has measures, False otherwise.

hasName()

Returns whether or not the geometry has a name.

Return type:: bool
Returns:: Returns True if the geometry has a name and False otherwise.

is3D()

Returns whether or not the geometry is 3D.

Return type:: bool
Returns:: Returns True if the geometry is 3D and False otherwise. For FMENull, this method will always return True. For FMEAggregate, FMEMultiPoint, FMEMultiArea, FMEMultiText and FMEMultiCurve, this method will return True if any one of the sub-parts is 3D. If the collection is empty or all of its members are 2D, this method will return False.

isCollection()

Check if the geometry is an aggregate or multi-part collection.

Return type:: bool
Returns:: True if the geometry is an aggregate or multi-part collection.

isInPlane(tolerance, normalVector, valD, recalculateD)

Works similarly to isPlanar(), but checks planarity with respect to given normal or given plane (if plane equation D is specified - see below). If given normal is the zero vector, the normal used to check the planarity is computed using Newell’s method as in isPlanar(). valD is a reference to a value of D in the plane equation AX + BY + CZ = D. It can be used to make sure that multiple pieces lie in the same plane. If ‘recalculateD’ is set to False, the passed in value of D will be used in the calculation. If ‘recalcualteD’ is set to True, the passed in value is ignored and is instead automatically calculated (and returned in the second position of the returned tuple). A useful calling pattern for ensuring co-planarity is to get valD computed on the first call to the function setting recalculateD to True, and then use this value for future calls with recalculateD to False.

Parameters:

tolerance (float) – The tolerance to check against.
normalVector (tuple[float, float, float]) – The normal used to check the planarity.
valD (float) – The value D from ‘AX + BY + CZ = D’.
recalculateD (bool) – Whether to recalculate ‘D’ or not.

Return type:

tuple[bool, tuple, float]

Returns:

A tuple containing a boolean, tuple, and float representing: 1) Whether or not the multiarea is in plane; 2) The normal vector returned; and 3) The value ‘D’.Note: If recalculateD is False, the tuple returned will only contain the boolean and vector tuple (i.e. ‘valD’ is not returned).

isPlanar(tolerance)

Returns True if this is planar within the given tolerance, and False otherwise.

The planarity condition is computed by the following algorithm. The normal vector <A, B, C> is determined by the vertices of this area using Newell’s method. For the first point (x’, y’, z’) of this area, we compute D’ = Ax’ + By’ + Cz’. Then, this area is planar if and only if every subsequent point (x, y, z) of this area gives a D = Ax + By + Cz, that is within the tolerance amount of D’. That is, | D - D’ | <= tolerance.

If the specified tolerance is negative, then this method always returns True.

Parameters:: tolerance (float) – The tolerance to check against.
Return type:: bool
Returns:: Whether the multiarea is planar within the tolerance supplied.

measureExists(measureName)

Returns True if the specified measure exists and False otherwise. If the ‘measureName’ parameter is not specified then the default measure is checked.

Parameters:: measureName (str) – (Optional) The measure’s name.
Return type:: bool
Returns:: Boolean indicating whether or not the measure exists.

numParts()

This returns the number of areas that make up this MultiArea.

Return type:: int
Returns:: The number of areas in MultiArea.

offset(offsetPoint)

Offsets the geometry by the coords specified by ‘offsetPoint’.

Parameters:: offsetPoint (FMEPoint) – The point to offset the coordinates of the geometry by.
Return type:: None
Raises:: FMEException – An exception is raised if an error occurred.

removeLastPart()

This removes and returns the last area of the MultiArea. If there are no areas in the MultiArea, it will return None.

Return type:: FMEArea or None
Returns:: The last area of the MultiArea. Note: This method returns a terminal area type of the FMEArea; i.e. one of the leaf classes in the FMEArea inheritance graph. For example, a FMEPolygon is returned if the area truly is a polygon.
Raises:: FMEException – An exception is raised if an error occurred.

removeMeasure(measureName)

Removes the measure with name ‘measureName’ if supplied, or the default measure, if there is one.

Parameters:: measureName (str) – (Optional) The name of the measure to remove.
Return type:: None

removeTraits(regexp)

This method has 4 modes:

Remove all traits at the top level: regex == NULL

Remove some traits at the top level: regex == <string>

Remove all traits at all levels: regex == kFME_RecurseAll

Remove some traits at all levels: regex == kFME_RecurseSome <string>

For example, specifying regex == NULL for a multi-surface will remove all traits at the root level of the multi-surface, whereas specifying regex == kFME_RecurseSome <string> will remove all traits from all levels of the multi surface that match <string>. If <string> is an illegal regular expression, no traits will be removed.

Return type:: None

renameMeasure(oldMeasureName, newMeasureName)

Renames the measure specified by ‘oldMeasureName’ to the new name, specified by ‘newMeasureName’.

Parameters:

oldMeasureName (str) – The original name of the measure.
newMeasureName (str) – The new name of the measure.

Return type:

None

rotate2D(center, angle)

The angle is CCW up from the horizontal and is measured in degrees.

Parameters:

center (FMEPoint) – The center of the rotation.
angle (float) – The angle in degrees.

Return type:

None

Raises:

FMEException – An exception is raised if an error occurred.

scale(xscale, yscale, zscale)

Applies a scale factor to the MultiArea. The zscale is ignored if geometry is 2D.

Parameters:

xscale (float) – The x scale factor.
yscale (float) – The y scale factor.
zscale (float) – The z scale factor.

Return type:

None

Raises:

FMEException – An exception is raised if an error occurred.

setName(name)

Sets the geometry’s name with a str. By supplying a blank name as input, this method will act as deleteName().

Parameters:: name (str) – The geometry’s new name.
Return type:: None

setTrait(traitName, traitValue)

Sets a geometry trait with the specified value. If the geometry trait already exists, its value and type will be changed. The following type numeric mappings are used:

PyInt ==> FME_Int32

PyFloat ==> FME_Real64

PyLong ==> FME_Int64

Binary values are to be specified as bytearray values or bytes values.

Parameters:

traitName (str) – The name of the geometry trait.
traitValue (bool, int, float, str, bytearray, or bytes) – The value of the geometry trait.

Return type:

None

setTraitNullWithType(traitName, traitType)

This method supplies a null trait value with a type to the geometry. If a trait with the same name already exists, it is overwritten.

Trait type must be one of FME_ATTR_UNDEFINED, FME_ATTR_BOOLEAN, FME_ATTR_INT8, FME_ATTR_UINT8, FME_ATTR_INT16, FME_ATTR_UINT16, FME_ATTR_INT32, FME_ATTR_UINT32, FME_ATTR_REAL32, FME_ATTR_REAL64, FME_ATTR_REAL80, FME_ATTR_STRING, FME_ATTR_ENCODED_STRING, FME_ATTR_INT64, FME_ATTR_UINT64.

Parameters:

traitName (str) – The trait’s name.
traitType (int) – An integer representing the trait type.

Return type:

None