Detailed Description
ICENodeContext is used for accessing/handling custom node graph data. Instances of this object can pass information to the C++ API callbacks that implement the custom node plug-in item.
- See also:
- ICENode, PluginRegistrar::RegisterICENode, cb_icenodes ICENode Callbacks
- Since:
- 7.0
#include <xsi_icenodecontext.h>
Constructor & Destructor Documentation
| ICENodeContext | ( | ) |
Default constructor.
| ~ICENodeContext | ( | ) |
Default destructor.
| ICENodeContext | ( | const CRef & | in_ref | ) |
Constructor.
- Parameters:
-
in_ref constant reference object.
| ICENodeContext | ( | const ICENodeContext & | in_obj | ) |
Copy constructor.
- Parameters:
-
in_obj constant class object.
Member Function Documentation
| bool IsA | ( | siClassID | in_ClassID | ) | const [virtual] |
Returns true if a given class type is compatible with this API class.
- Parameters:
-
in_ClassID class type.
- Returns:
- true if the class is compatible, false otherwise.
Reimplemented from Context.
| siClassID GetClassID | ( | ) | const [virtual] |
| ICENodeContext& operator= | ( | const ICENodeContext & | in_obj | ) |
Creates an object from another object.
- Parameters:
-
in_obj constant class object.
- Returns:
- The new ICENodeContext object.
| ICENodeContext& operator= | ( | const CRef & | in_ref | ) |
Creates an object from a reference object. The newly created object is set to empty if the input reference object is not compatible.
- Parameters:
-
in_ref constant class object.
- Returns:
- The new ICENodeContext object.
Reimplemented from Context.
| CStatus GetGroupInstanceCount | ( | ULONG | in_grpUniqID, |
| ULONG & | out_inst_count | ||
| ) | const |
Returns the number of instances for a given group.
- Parameters:
-
in_grpUniqID Group index to query
- Return values:
-
out_inst_count Number of instances
- Returns:
- CStatus::OK success
| ULONG GetEvaluationThreadCount | ( | ) | const |
Returns the number of threads used during the cb_ICENode_Evaluate Evaluate callback.
- Returns:
- Thread count.
| ULONG GetCurrentThreadIndex | ( | ) | const |
Returns the current evaluation thread index. If called from cb_ICENode_Evaluate Evaluate , the index ranges between 0 and GetEvaluationThreadCount()-1. Returns 0 if called from either the cb_ICENode_BeginEvaluate BeginEvaluate or cb_ICENode_EndEvaluate EndEvaluate callback.
- Returns:
- ULONG Thread index.
| ULONG GetNumberOfElementsToProcess | ( | ) | const |
Returns the total number of elements to process during the evaluation of an ICENode. Returns 0 if the operation fails. The return value can be set by the custom ICENode if an output port is set with the siICENodeContextElementGenerator context type.
- Returns:
- ULONG Number of elements.
| CStatus PutNumberOfElementsToProcess | ( | ULONG | in_nElements | ) |
Sets the number of elements to generate for an element generator node. The new value will affect the current output port being evaluated.
- Parameters:
-
in_nElements Number of elements. The value is ignored if the current port has not been set with the siICENodeContextElementGenerator context type.
- Returns:
- CStatus::OK Success.
- CStatus::Fail Operation failed.
- Example:
- This example shows how to set the number of elements to
generate for an element generator type of ICENode.
The cb_ICENode_BeginEvaluate BeginEvaluate callback must be used
for calling
ICENodeContext::PutNumberOfElementsToProcess.
XSIPLUGINCALLBACK CStatus MyICENodeGenerator_BeginEvaluate( ICENodeContext& in_ctxt ) { // Get some values from an input port CDataArrayLong inSize( in_ctxt, ID_Size ); // Total number of elements to generate ULONG nSize = inSize[ 0 ]; ULONG nElements = nSize * nSize; in_ctxt.PutNumberOfElementsToProcess( nElements ); return CStatus::OK; }
| CStatus GetPortInfo | ( | ULONG | in_nPortID, |
| siICENodeDataType & | out_type, | ||
| siICENodeStructureType & | out_struct, | ||
| siICENodeContextType & | out_context | ||
| ) | const |
Returns the resolved port types for the specified ICENodePort.
- Parameters:
-
in_nPortID Index of the port to query
- Return values:
-
out_type Data type for this port (see ICENodePort::GetDataType) out_struct Structure for this port (see ICENodePort::GetStructureType) out_context Context for this port (see ICENodePort::GetContextType)
- Returns:
- CStatus::OK success
| CStatus GetPortInfo | ( | ULONG | in_nPortID, |
| siICENodeDataType & | out_type, | ||
| siICENodeStructureType & | out_struct, | ||
| siICENodeContextType & | out_context, | ||
| CString & | out_customDataType | ||
| ) | const |
Returns the resolved port types for the specified ICENodePort. The method also returns the resolved custom data type identifier if the port type is set with siICENodeDataCustomType, otherwise the string returned is empty.
- Parameters:
-
in_nPortID Index of the port to query
- Return values:
-
out_type Data type for this port (see ICENodePort::GetDataType) out_struct Structure for this port (see ICENodePort::GetStructureType) out_context Context for this port (see ICENodePort::GetContextType) out_customDataType The custom data type identifier for this port.
- Returns:
- CStatus::OK success
| ULONG GetEvaluatedOutputPortID | ( | ) | const |
Returns the unique identifier of the output port being evaluated.
- Returns:
- CStatus::OK success
| CTime GetTime | ( | ) | const |
| ULONG GetEvaluationPhaseIndex | ( | ) | const |
Returns the current evaluation phase index when the ICENode
is configured for multi-phase evaluation. This method returns
UINT_MAX if the node threading mode is not set
accordingly or the method is called during the last processing
phase.
- Returns:
- Phase index.
- See also:
- ICENodeDef::PutThreadingModel, siICENodeMultiEvaluationPhase, ICENodeContext::AddEvaluationPhaseInputPorts, ICENodeContext::SetLastEvaluationPhase
- Since:
- 8.0 (2010)
| CStatus SetLastEvaluationPhase | ( | ) |
Sets the current evaluation phase as the last phase to process. This tells Softimage to pull the input port(s) data for the final processing phase. This method is enabled only when the node threading model is set to siICENodeMultiEvaluationPhase.
- Returns:
- CStatus::OK Operation succeeded.
- See also:
- ICENodeContext::GetEvaluationPhaseIndex, ICENodeContext::AddEvaluationPhaseInputPorts
- Since:
- 8.0 (2010)
| CStatus AddEvaluationPhaseInputPort | ( | ULONG | in_portid, |
| const XSI::CLongArray & | in_portInstances = XSI::CLongArray() |
||
| ) |
Adds an input port to evaluate for the current evaluation phase. This method must be used in the context of a custom node with multi-evaluation processing and from the cb_ICENode_SubmitEvaluationPhaseInfo SubmitEvaluationPhaseInfo callback. The method is enabled only when the node threading model is set to siICENodeMultiEvaluationPhase.
AddEvaluationPhaseInputPort takes a port identifier, as
specified with ICENodeDef::AddInputPort,
and an optional array of port instance numbers. By default, all
port instances are evaluated, but you can specify the port instance
number(s) corrsponding to which port(s) you want to be evaluated in
the in_portInstances array. You can call
AddEvaluationPhaseInputPort multiple times to specify multiple
ports to evaluate. Ports are evaluated in the same order in which
they are specified.
Here are some important rules to follow when specifying the input ports to pull:
- Except for singleton contexts, ports with similar context types should be prepared together in the same phase for better performance.
- Unless input port contexts are specified as singletons, ports specified during the last phase must match the context of the output port(s).
- Parameters:
-
in_portid A unique identifier describing the input port. in_portInstances A CLongArray containing the instance(s) of the port(s) to evaluate.
- Returns:
- CStatus::OK Operation succeeded.
- CStatus::InvalidArgument Input port or instances are invalid.
- See also:
- ICENodeContext::GetEvaluationPhaseIndex, ICENodeContext::SetLastEvaluationPhase, ICENodeDef::AddInputPort
- Since:
- 8.0 (2010)
| CStatus SetAsElementDataVarying | ( | ) |
In ICE, the data flowing in an ICETree is constant by default. For instance, the element data of a particle cloud do not vary at each evaluation when it's constant. In this case, the data array of an input port will always be set with one single value. SetAsElementDataVarying can be used to force the element data to vary independently of the input data state.
A typical use of SetAsElementDataVarying is when a custom node
needs to output data randomly regardless of the input data state.
The CustomICENodes/netview_CustomICENodes GridWalker example uses
constants for all inputs and calling SetAsElementDataVarying will
allow the GridWalker node to set the data for all
particle elements.
- Note:
- Calling this method could lead to performance issues when it is not strictly required.
- Returns:
- CStatus::OK Operation succeeded.
- Since:
- 8.0 (2010)
| CStatus SetAsTimeVarying | ( | ) |
Forces the node to evaluate frame by frame regardless of the overall graph state. You can use this function instead of connecting the CurrentFrameNode as input to the custom node.
- Returns:
- CStatus::OK Operation succeeded.
- Since:
- 8.0 (2010)
The documentation for this class was generated from the following file:
