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

#include <MMatrixArray.h>

List of all members.


Detailed Description

Array of MMatrix data type.

This class implements an array of MMatrix's. Common convenience functions are available, and the implementation is compatible with the internal Maya implementation so that it can be passed efficiently between plugins and internal maya data structures.

Examples:

instancerListCmd.cpp.


Public Member Functions

 MMatrixArray ()
 MMatrixArray (const MMatrixArray &other)
 MMatrixArray (unsigned initialSize)
 ~MMatrixArray ()
const MMatrixoperator[] (unsigned index) const
MMatrixoperator[] (unsigned index)
MMatrixArrayoperator= (const MMatrixArray &other)
MStatus set (const MMatrix &element, unsigned index)
MStatus setLength (unsigned length)
unsigned length () const
MStatus remove (unsigned index)
MStatus insert (const MMatrix &element, unsigned index)
MStatus append (const MMatrix &element)
MStatus copy (const MMatrixArray &source)
MStatus clear ()
void setSizeIncrement (unsigned newIncrement)
unsigned sizeIncrement () const

Friends

OPENMAYA_EXPORT std::ostream & operator<< (std::ostream &os, const MMatrixArray &array)

Constructor & Destructor Documentation

MMatrixArray::MMatrixArray (  ) 

Default constructor. The instance is set to contain no elements.

MMatrixArray::MMatrixArray ( const MMatrixArray other  ) 

Copy Constructor.

Parameters:
[in] other the array with which to initialize this instance

MMatrixArray::MMatrixArray ( unsigned  initialSize  ) 

Create a new array of MMatrix's of a specified size and initialize all the elements as the identity matrix

Parameters:
[in] initialSize the initial size of the array

MMatrixArray::~MMatrixArray (  ) 

The class destructor.


Member Function Documentation

const MMatrix & MMatrixArray::operator[] ( unsigned  index  )  const

Index operator. Returns the value of the element at the given index. No range checking is done - valid indices are 0 to length()-1.

Parameters:
[in] index the index of the element whose value is to be returned
Returns:
The value of the indicated element.

MMatrix & MMatrixArray::operator[] ( unsigned  index  ) 

Index operator allowing assignment to an element of the array. Returns a reference to the element at the given index. No range checking is done - valid indices are 0 to length()-1.

Parameters:
[in] index the index of the desired element
Returns:
A reference to the indicated element

MMatrixArray & MMatrixArray::operator= ( const MMatrixArray other  ) 

Assignment operator copies all of the elements of the other array into this one.

If the other array was returned as a reference to internal data then this array will also become a reference rather than doing a full copy.

Parameters:
[in] other the array being copied
Returns:
A reference to this array

MStatus MMatrixArray::set ( const MMatrix element,
unsigned  index 
)

Sets the value of the indicated element to the indicated MMatrix value.

NOTE: This method does not grow the array if the index is out of bounds. Only a valid index should be used.

Parameters:
[in] element the new value for the indicated element
[in] index the index of the element that is to be set to the the new value
Returns:
MS::kSuccess if the value was set successfully and MS::kFailure otherwise

MStatus MMatrixArray::setLength ( unsigned  length  ) 

Set the length of the array. This will grow and shrink the array as desired. Elements that are grown have uninitialized values, while those which are shrunk will lose the data contained in the deleted elements (ie. it will release the memory).

Parameters:
[in] length the new size of the array

unsigned MMatrixArray::length (  )  const

Returns the number of elements in the instance.

Returns:
The number of elements in the instance

MStatus MMatrixArray::remove ( unsigned  index  ) 

Remove the array element at the given index. All array elements following the removed element are shifted toward the first element.

Parameters:
[in] index index of the element to be removed
Returns:
MS::kSuccess if the remove was successful and MS::kFailure otherwise

MStatus MMatrixArray::insert ( const MMatrix element,
unsigned  index 
)

Inserts a new value into the array at the given index. The initial element at that index, and all following elements, are shifted towards the last. If the array cannot be expanded in size by 1 element, then the insert will fail and the existing array will remain unchanged.

Parameters:
[in] element the new value to insert into the array
[in] index the index of the element to set to the the new value
Returns:
true if the insert was successful and false otherwise

MStatus MMatrixArray::append ( const MMatrix element  ) 

Adds a new element to the end of the array. If the array cannot be expanded in size by 1 element, then the append will fail and the existing array will remain unchanged.

Parameters:
[in] element the value for the new last element
Returns:
MS::kSuccess if the append was successful and MS::kFailure otherwise

MStatus MMatrixArray::copy ( const MMatrixArray source  ) 

Copy the contents of the source array to this array.

Parameters:
[in] source array to copy from
Returns:
MS::kSuccess if the copy was successful and MS::kFailure otherwise

MStatus MMatrixArray::clear (  ) 

Clear the contents of the array. After this operation the length method will return 0. This does not change the amount of memory allocated to the array, only the number of valid elements in it.

void MMatrixArray::setSizeIncrement ( unsigned  newIncrement  ) 

Set the size by which the array will be expanded whenever expansion is necessary.

Parameters:
[in] newIncrement the new increment

unsigned MMatrixArray::sizeIncrement (  )  const

Return the size by which the array will be expanded whenever expansion is necessary.

Returns:
true if the array argument is a non-zero pointer and false otherwise


Friends And Related Function Documentation

OPENMAYA_EXPORT std::ostream& operator<< ( std::ostream &  os,
const MMatrixArray array 
) [friend]

Print the contents of the given MMatrixArray on the given ostream. The format used is:

element 0: [[r11, r12, r13, r14] [r21, r22, r23, r24] [r31, r32, r33, r34] [r41, r42, r43, r44]]

...

element n-1: [[r11, r12, r13, r14] [r21, r22, r23, r24] [r31, r32, r33, r34] [r41, r42, r43, r44]]

Where "n" is the length of the given MMatrixArray

Parameters:
[in] os the ostream to print to
[in] array the MMatrixArray whose value is to be printed
Returns:
The ostream reference, s, provided as the first parameter.


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