Detailed Description

Manipulate Linear Data.

The MDistance class provides a fundamental type for the Maya API to hold and manipulate linear data. All API methods that require or return distance information do so through variables of this type.

Examples:: animFileExport.cpp, animFileUtils.cpp, cgfxAttrDef.cpp, footPrintManip.cpp, footPrintNode.cpp, and swissArmyManip.cpp.

#include <MDistance.h>

List of all members.

Public Types
enum	Unit { , kInches, kFeet, kYards, kMiles, kMillimeters, kCentimeters, kKilometers, kMeters }
	Available Unit Systems. More...
Public Member Functions
	MDistance ()
	The default class constructor.
	MDistance (double value, Unit unitSystem=kCentimeters)
	Class constructor.
	MDistance (const MDistance &src)
	Copy constructor.
	~MDistance ()
	The class destructor.
MDistance &	operator= (const MDistance &src)
	The assignment operator.
Unit	unit () const
	Return the units currently in effect for this instance.
double	value () const
	Return the value of the current instance in the currently set units.
MStatus	setUnit (Unit newUnit)
	Set the units used by this instance.
MStatus	setValue (double newValue)
	Set the value of this instance.
double	as (Unit newUnit, MStatus *ReturnStatus=NULL) const
	Return the current value of this instance in the provided units.
double	asUnits (Unit newUnit, MStatus *ReturnStatus=NULL) const
	Return the current value of this instance in the provided units.
double	asInches () const
	Return the current value of this instance in inches.
double	asFeet () const
	Return the current value of this instance in feet.
double	asYards () const
	Return the current value of this instance in yards.
double	asMiles () const
	Return the current value of this instance in miles.
double	asMillimeters () const
	Return the current value of this instance in millimeters.
double	asCentimeters () const
	Return the current value of this instance in centimeters.
double	asKilometers () const
	Return the current value of this instance in kilometers.
double	asMeters () const
	Return the current value of this instance in meters.
Static Public Member Functions
static Unit	uiUnit ()
	Returns the Working Units (or UI units) chosen in the settings of the prefs window.
static MStatus	setUIUnit (Unit newUnit)
	Set the unit system to be used by the user in the UI.
static Unit	internalUnit ()
	Returns the internal unit system.
static double	internalToUI (double internalValue)
	Converts a value from internal units to UI units.
static double	uiToInternal (double uiValue)
	Converts a value from UI units to internal units.
static const char *	className ()
	Returns the name of this class.
static MStatus	setInternalUnit (Unit internalUnit)
	This method is obsolete.

Member Enumeration Documentation

enum Unit

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Available Unit Systems.

Enumerator:

kInches	Inches. Search for all occurrences
kFeet	Feet. Search for all occurrences
kYards	Yards. Search for all occurrences
kMiles	Miles. Search for all occurrences
kMillimeters	Millimeters. Search for all occurrences
kCentimeters	Centimeters. Search for all occurrences
kKilometers	Kilometers. Search for all occurrences
kMeters	Meters. Search for all occurrences

Constructor & Destructor Documentation

MDistance ( )

The default class constructor.

Initialize the MDistance instance to 0 in the current internal units. (See setInternalUnit and internalUnit below).

MDistance	(	double	newValue,
		MDistance::Unit	newUnit = `kCentimeters`
	)

Class constructor.

Initialize the MDistance instance to the given value in the given unit system

Parameters:

[in]	newValue	the initial value of the instance
[in]	newUnit	the unit system for the initial value

MDistance ( const MDistance & src )

Copy constructor.

Parameters:

[in] src Existing MDistance object from which to initialize the new one.

Member Function Documentation

MDistance & operator= ( const MDistance & src )

The assignment operator.

Parameters:

[in] src Existing MDistance object from which to set the value of this one.

Returns:: Reference to this MDistance instance.

MDistance::Unit unit ( ) const

Search for all occurrences

Return the units currently in effect for this instance.

Returns:: An element of the MDistance::Unit enum

double value ( ) const

Search for all occurrences

Return the value of the current instance in the currently set units.

Returns:: The current value of the instance

MStatus setUnit ( MDistance::Unit newUnit )

Search for all occurrences

Set the units used by this instance.

Parameters:

[in] newUnit an element of the MDistance::Unit enum

Returns:: MS::kSuccess if a valid unit was provided, MS::kFailure otherwise

MStatus setValue ( double newValue )

Search for all occurrences

Set the value of this instance.

Parameters:

[in] newValue the new value in the units currently in effect

Returns:: Always returns MS::kSuccess

double as	(	MDistance::Unit	otherUnit,
		MStatus *	ReturnStatus = `NULL`
	)		const

Search for all occurrences

Return the current value of this instance in the provided units.

Parameters:

[in]	otherUnit	an element of the MDistance::Unit enum specifying the desired units
[out]	ReturnStatus	return status

Returns:: The current value in the given units

Status Codes:

MS::kSuccess operation successful
MS::kFailure operation failed

Examples:: cgfxAttrDef.cpp.

double asUnits	(	MDistance::Unit	otherUnit,
		MStatus *	ReturnStatus = `NULL`
	)		const

Search for all occurrences

Return the current value of this instance in the provided units.

Parameters:

[in]	otherUnit	an element of the MDistance::Unit enum specifying the desired units
[out]	ReturnStatus	return status

Returns:: The current value in the given units

Status Codes:

MS::kSuccess operation successful
MS::kFailure operation failed

double asInches ( ) const

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Return the current value of this instance in inches.

Returns:: The current value in the inches

double asFeet ( ) const

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Return the current value of this instance in feet.

Returns:: The current value in the feet

double asYards ( ) const

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Return the current value of this instance in yards.

Returns:: The current value in the yards

double asMiles ( ) const

Search for all occurrences

Return the current value of this instance in miles.

Returns:: The current value in the miles

double asMillimeters ( ) const

Search for all occurrences

Return the current value of this instance in millimeters.

Returns:: The current value in the millimeters

double asCentimeters ( ) const

Search for all occurrences

Return the current value of this instance in centimeters.

Returns:: The current value in the centimeters

Examples:: footPrintManip.cpp, footPrintNode.cpp, and swissArmyManip.cpp.

double asKilometers ( ) const

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Return the current value of this instance in kilometers.

Returns:: The current value in the kilometers

double asMeters ( ) const

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Return the current value of this instance in meters.

Returns:: The current value in the meters

MDistance::Unit uiUnit ( ) [static]

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Returns the Working Units (or UI units) chosen in the settings of the prefs window.

Returns:: An element of the MDistance::Unit enum

Examples:: animFileExport.cpp, animFileUtils.cpp, and objExport.cpp.

MStatus setUIUnit ( MDistance::Unit newUnit ) [static]

Search for all occurrences

Set the unit system to be used by the user in the UI.

Parameters:

[in] newUnit and element of the MDistance::Unit enum.

Returns:: MS::kSuccess if a valid unit was provided, MS::kFailure otherwise

Examples:: animFileUtils.cpp.

MDistance::Unit internalUnit ( ) [static]

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Returns the internal unit system.

Returns:: The internal unit for distance

Examples:: animFileUtils.cpp, and cgfxAttrDef.cpp.

double internalToUI ( double internalValue ) [static]

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Converts a value from internal units to UI units.

Parameters:

[in] internalValue a value in internal units

Returns:: The value in UI units

Examples:: objExport.cpp.

double uiToInternal ( double uiValue ) [static]

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Converts a value from UI units to internal units.

Parameters:

[in] uiValue a value in UI units

Returns:: The value in internal units.

const char * className ( ) [static]

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Returns the name of this class.

Returns:: The name of this class.

MStatus setInternalUnit ( MDistance::Unit internalUnit ) [static]

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This method is obsolete.

Deprecated:

Changing the internal units is generally not a good idea and using the method may often produce unexpected results. It is recommended to just read the values and convert them to the units desired.

Set the internal unit system.

Parameters:

[in] internalUnit the internal unit to be used by distance

Returns:: Status code

Status Codes:

MS::kSuccess a valid unit was provided
MS::kFailure a valid unit was not provided

MDistance Class Reference

OpenMaya - API module for common classes

Detailed Description

Public Types

Public Member Functions

Static Public Member Functions

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation