MGeometry Class Reference

#include <MGeometry.h>

Class Description

This method is obsolete.

Deprecated:

Use MHWRender::MGeometry and MHWRender::MGeometryExtractor instead.

MGeometry stores the collection of MGeometryData arrays which describe a Maya surface, including per-component data such as UV mapping and colour.

Various methods are provided for returning MGeometryData containing the data for different properties of the geometry: the position() method returns position data, the normal() method returns normals, and so on.

The primitiveArray() method returns MGeometryPrimitive's which provide indexing into those property arrays for each primitive to be drawn.

Examples:

Public Member Functions
	~MGeometry ()
	Class destructor.
	MGeometry (const MGeometry &geom)
	Copy constructor. More...
MGeometry &	operator= (const MGeometry &rhs)
	Copy constructor. More...
unsigned int	primitiveArrayCount () const
	Get the number of primitive arrays for this surface. More...
const MGeometryPrimitive	primitiveArray (unsigned int arrayNumber) const
	Get the primitive indexing data for this surface. More...
const MGeometryData	position ()
	Get the position data for this surface. More...
const MGeometryData	normal ()
	Get the normal data for this surface. More...
const MGeometryData	componentId ()
	Get the Maya component id data for this surface. More...
const MGeometryData	texCoord (const MString &name)
	Get a texture coordinate set by name. More...
const MGeometryData	color (const MString &name)
	Get a color set by name. More...
const MGeometryData	tangent (const MString &name)
	Get a tangent set by name. More...
const MGeometryData	binormal (const MString &name)
	Get a binormal set by name. More...
const MGeometryData	data (MGeometryData::DataType what, const MString &name)
	Get arbitrary surface data by name. More...

Friends
class	MGeometryManager
class	MGeometryList
class	MVaryingParameter

Constructor & Destructor Documentation

MGeometry

(

const MGeometry &

geom

)

Copy constructor.

Parameters

[in]

geom

MGeometry to copy.

Member Function Documentation

MGeometry & operator=

(

const MGeometry &

rhs

)

Copy constructor.

Parameters

[in]

rhs

MGeometry to copy

Returns

MGeometry copied into.

unsigned int primitiveArrayCount

(

)

const

Get the number of primitive arrays for this surface.

Returns

Number of primitive arrays

Examples:

const MGeometryPrimitive primitiveArray

(

unsigned int

arrayNumber

)

const

Get the primitive indexing data for this surface.

The surface geometry may consist of more than one MGeometryPrimitive, each representing an array of primitives. For example, if the surface was composed of both triangles and quads there might be one MGeometryPrimitive for the triangles and a second for the quads. The arrayNumber parameter is used to select between these.

Each MGeometryPrimitive contains indices which are used to map the MGeometryData returned by the other methods of this class onto the primitives. For example, if the returned MGeometryPrimitive is for an array of triangles it will contain three indices for each triangle. Those indices can be used to index into the position data returned by the position() method, the normal data returned by the normal() method, and so on.

Parameters

[in]

arrayNumber

Number of the index data to retrieve. Must be in the range 0 to primitiveArrayCount() - 1.

Returns

Primitive data structure, which may be empty.

Examples:

const MGeometryData position

(

)

Get the position data for this surface.

Returns

The position data (which may be empty).

Examples:

const MGeometryData normal

(

)

Get the normal data for this surface.

Returns

The normal data (which may be empty).

Examples:

const MGeometryData componentId

(

)

Get the Maya component id data for this surface.

This array allows you to correlate MGeometry entries with the corresponding component on the Maya surface (e.g. for meshes, this array will contains the vertex id).

Returns

The component id data (which may be empty).

const MGeometryData texCoord

(

const MString &

name

)

Get a texture coordinate set by name.

Parameters

[in]

name

the name of the set to return

Returns

The texture coordinate data (which may be empty).

Examples:

const MGeometryData color

(

const MString &

name

)

Get a color set by name.

Parameters

[in]

name

the name of the set to return

Returns

The color data (which may be empty).

Examples:

const MGeometryData tangent

(

const MString &

name

)

Get a tangent set by name.

Parameters

[in]

name

the name of the uv set tangent data should be returned for

Returns

The tangent data (which may be empty).

Examples:

const MGeometryData binormal

(

const MString &

name

)

Get a binormal set by name.

Parameters

[in]

name

the name of the uv set binormal data should be returned for

Returns

The binormal data (which may be empty).

Examples:

const MGeometryData data	(	MGeometryData::DataType	what,
		const MString &	name
	)

Get arbitrary surface data by name.

Parameters

[in]	what	the type of data requested
[in]	name	the name of the data set requested

Returns

The geometry data (which may be empty).

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The documentation for this class was generated from the following files:

• MGeometry.h
• MGeometry.cpp