MAngle Class Reference
[OpenMaya - API module for common classes]

#include <MAngle.h>

List of all members.

---

Detailed Description

Manipulate Angular Data.

Methods for setting and retreiving angular data in various unit systems

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

Examples:

animFileExport.cpp, animFileUtils.cpp, animFileUtils.h, D3DResourceManager.cpp, shellNode.cpp, and swissArmyManip.cpp.

Public Types
enum	Unit {    kInvalid, kRadians, kDegrees, kAngMinutes,    kAngSeconds, kLast }
	Available Unit Systems. More...
Public Member Functions
	MAngle ()
	Default constructor.
	MAngle (const MAngle &src)
	Copy constructor.
	MAngle (double value, Unit u=kRadians)
	Class constructor.
	~MAngle ()
	Class destructor.
MAngle &	operator= (const MAngle &other)
	Assignment operator.
Unit	unit () const
	Current unit.
double	value () const
	Current value.
MStatus	setUnit (Unit newUnit)
	Set current unit.
MStatus	setValue (double newValue)
	Set current value.
double	as (Unit otherUnit, MStatus *ReturnStatus=NULL) const
	Unit conversion.
double	asUnits (Unit otherUnit, MStatus *ReturnStatus=NULL) const
	Unit conversion.
double	asRadians () const
	Convert to radians.
double	asDegrees () const
	Convert to degrees.
double	asAngMinutes () const
	Convert to minutes of arc.
double	asAngSeconds () const
	Convert to seconds of arc.
Static Public Member Functions
static Unit	uiUnit ()
	Working unit.
static MStatus	setUIUnit (Unit newUnit)
	Set working unit.
static Unit	internalUnit ()
	Internal unit.
static double	internalToUI (double internalValue)
	Unit conversion.
static double	uiToInternal (double uiValue)
	Unit conversion.
static MStatus	setInternalUnit (Unit internalUnit)
	This method is obsolete.

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Member Enumeration Documentation

enum MAngle::Unit

Available Unit Systems.

Enumerator:

kInvalid	Invalid value.
kRadians	Radians.
kDegrees	Degrees.
kAngMinutes	Minutes of Arc.
kAngSeconds	Seconds of Arc.
kLast	Last enum value.

---

Constructor & Destructor Documentation

MAngle::MAngle

(

)

Default constructor.

Initialize the MAngle instance to 0 in the current internal units.

See also:

internalUnit().

MAngle::MAngle

(

const MAngle &

src

)

Copy constructor.

Parameters:

[in]

src

The source MAngle object.

MAngle::MAngle	(	double	value,
		MAngle::Unit	unitSystem = kRadians
	)

Class constructor.

Initialize the MAngle instance to the given value in the given unit system.

Parameters:

[in]	value	The initial value of the instance
[in]	unitSystem	The unit system for the initial value

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Member Function Documentation

MAngle & MAngle::operator=

(

const MAngle &

src

)

Assignment operator.

Parameters:

[in]

src

The source MAngle object.

Returns:

Reference to the MAngle

MAngle::Unit MAngle::unit

(

)

const

Current unit.

Return the units currently in effect for this instance.

Returns:

An element of the MAngle::Unit enum

double MAngle::value

(

)

const

Current value.

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

Returns:

The current value of the instance

MStatus MAngle::setUnit

(

MAngle::Unit

newUnit

)

Set current unit.

Set the unit used by this instance. This will not affect the current value of the MAngle.

Parameters:

[in]

newUnit

An element of the MAngle::Unit enum

Returns:

Status code.

Status Codes:

• MS::kSuccess the unit of set succesfully.
• MS::kFailure the unit is invalid.

MStatus MAngle::setValue

(

double

newValue

)

Set current value.

Set the value of this instance.

Parameters:

[in]

newValue

The new value in the units currently in effect

Returns:

Always returns MS::kSuccess

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

Unit conversion.

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

Parameters:

[in]	otherUnit	An element of the MAngle::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:

animFileExport.cpp, and animFileUtils.cpp.

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

Unit conversion.

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

Parameters:

[in]	otherUnit	An element of the MAngle::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 MAngle::asRadians

(

)

const

Convert to radians.

Return the current value of this instance in radians.

Returns:

The current value in the radians

Examples:

shellNode.cpp, and swissArmyManip.cpp.

double MAngle::asDegrees

(

)

const

Convert to degrees.

Return the current value of this instance in degrees.

Returns:

The current value in the degrees

double MAngle::asAngMinutes

(

)

const

Convert to minutes of arc.

Return the current value of this instance in minutes of arc.

Returns:

The current value in the minutes of arc

double MAngle::asAngSeconds

(

)

const

Convert to seconds of arc.

Return the current value of this instance in seconds of arc.

Returns:

The current value in the seconds of arc

MAngle::Unit MAngle::uiUnit

(

)

[static]

Working unit.

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

Returns:

An element of the MAngle::Unit enum

Examples:

animFileExport.cpp, and animFileUtils.cpp.

MStatus MAngle::setUIUnit

(

MAngle::Unit

newUnit

)

[static]

Set working unit.

Set the unit system to be used by the user in the UI. This will not change the return value of the MAngle::value() method of this instance of MAngle.

Parameters:

[in]

newUnit

and element of the MAngle::Unit enum.

Returns:

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

MAngle::Unit MAngle::internalUnit

(

)

[static]

Internal unit.

Returns the internal unit system used by Maya. This is the unit system Maya stores angles in.

Returns:

The internal unit for angles

Examples:

animFileUtils.cpp.

double MAngle::internalToUI

(

double

internalValue

)

[static]

Unit conversion.

Converts a value from Maya's internal units to the current units used in the UI.

Parameters:

[in]

internalValue

a value in internal units

Returns:

The value in UI units

double MAngle::uiToInternal

(

double

uiValue

)

[static]

Unit conversion.

Converts a value from the units Maya is currently uses in the UI to the Maya internal unit system.

Parameters:

[in]

uiValue

a value in UI units

Returns:

The value in internal units.

MStatus MAngle::setInternalUnit

(

MAngle::Unit

internalUnit

)

[static]

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.

Sets the internal unit system which Maya uses to store angles.

Parameters:

[in]

internalUnit

the internal unit for angles

Returns:

Status code

Status Codes:

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