Detailed Description

Geometric index container.

MGeometryPrimitive is a class describes the topology used for accessing MGeometryData.

Topology is specified as a set of index values which references into data elements in an MGeometryData. Index values can be assumed to be stored in contiguous memory.

A "draw primitive type" indicates the format of the indexing as follows:

kPoint : individual unconnected points.
kLine : individual unconnected line segments.
kLineStrip : connected line strip.
kLineLoop : closed line loop.
kTriangle : filled triangle.
kTriangleStrip : filled triangle strip.
kTriangleFan : filled triangle fan
kQuad : filled quadrilateral (quad).
kQuadStrip : filled quad strip.
kPolygon : filled N-sided polygon

Internal Maya data which is passed to the user via this class is always assumed to be non-modifiable. If modified, stability cannot be ensured.

Examples:: D3DGeometryItem.cpp, hlslShader.cpp, and OpenGLViewportRenderer.cpp.

#include <MGeometryPrimitive.h>

List of all members.

Public Types
enum	DrawPrimitiveType { kInvalidIndexType = 0, kPoints, kLines, kLineStrip, kLineLoop, kTriangles, kTriangleStrip, kTriangleFan, kQuads, kQuadStrip, kPolygon, kMaxDrawPrimitiveTypeIndex }
	Specifies the data primitive type constructed by the indexing array. More...
Public Member Functions
	MGeometryPrimitive (const MGeometryPrimitive &other)
	Copy constructor.
	~MGeometryPrimitive ()
	Destructor.
int	uniqueID () const
	Return the per session unique identifier.
DrawPrimitiveType	drawPrimitiveType () const
	Get the data type for the data.
unsigned int	elementCount () const
	Return element count.
MGeometryData::ElementType	dataType () const
	Return element data type.
const void *	data () const
	Retrieve a pointer to the internal data.
Friends
class	MGeometry Search for all occurrences
class	MVaryingParameter Search for all occurrences
class	MHardwareRenderer Search for all occurrences

Member Enumeration Documentation

enum DrawPrimitiveType

Search for all occurrences

Specifies the data primitive type constructed by the indexing array.

Enumerator:

kInvalidIndexType	Default value is not valid. Search for all occurrences
kPoints	Corresponds to GL_POINTS in OpenGL. Search for all occurrences
kLines	Corresponds to GL_LINES in OpenGL (individual unconnected line segments) Search for all occurrences
kLineStrip	Corresponds to GL_LINE_STRIP in OpenGL. Search for all occurrences
kLineLoop	Corresponds to GL_LINE_LOOP in OpenGL (non-filled, connected line segments) Search for all occurrences
kTriangles	Corresponds to GL_TRIANGLES In OpenGL. Search for all occurrences
kTriangleStrip	Corresponds to GL_TRIANGLE_STRIP in OpenGL. Search for all occurrences
kTriangleFan	Corresponds to GL_TRIANGLE_FAN in OpenGL. Search for all occurrences
kQuads	Corresponds to GL_QUADS in OpenGL. Search for all occurrences
kQuadStrip	Corresponds to GL_QUAD_STRIP in OpenGL. Search for all occurrences
kPolygon	Corresponds to GL_POLYGON in OpenGL. Search for all occurrences
kMaxDrawPrimitiveTypeIndex	Number of primitive types. Search for all occurrences