MEvaluationGraph Class Reference

#include <MEvaluationGraph.h>

Class Description

Evaluation graph object.

The evaluation graph holds information about what in the scene is considered to be live (or time dependent). It is constructed out of dirty messages, and has full knowledge of dependencies between live nodes. This is why it can be used to replace regular Maya evaluation with dirty propagation.

The evaluation graph is linked to DG context and graph construction. This context is fully respected during evaluation.

Evaluation with the evaluation graph can be done in different modes and depending on settings, a different executor is used to traverse the graph and do complete or partial graph computation. Unlike the DG, the evaluation with evaluation graph is using forward evaluation model. Graph topology is defined by directional connections between evaluation nodes.

Examples:

Public Member Functions
MDGContext	context (MStatus *ReturnStatus) const
	Provides evaluation context. More...
bool	partialEvaluation () const
	Test if graph is partially invalidated. More...

Static Public Member Functions
static const char *	className ()
	Returns the name of this class. More...

Friends
class	MCustomEvaluatorClusterNode

Member Function Documentation

OPENMAYA_MAJOR_NAMESPACE_OPEN MDGContext context

(

MStatus *

ReturnStatus

)

const

Provides evaluation context.

Parameters

[in]

ReturnStatus

Status object

Returns

Current evaluation context

Status Codes:

• MS::kSuccess operation successful
• MS::kFailure operation failed (graph does not exist)

bool partialEvaluation

(

)

const

Test if graph is partially invalidated.

Returns

True if scene evaluation was partially invalidated

const char * className ( )

static

Returns the name of this class.

Returns

The name of this class.

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

• MEvaluationGraph.h
• MEvaluationGraph.cpp