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mdlcommon

Module mdlcommon provides the definition of common interfaces for MDLObjects:

 class mdl.mdlcommon.MDLImplWithOperands(aOperands=None)

Bases: mdl.mdlcommon.MDLNodeImpl

This class allows to gather the parameter management for classes MDLImplConstant, MDLImplMDLInstance and MDLImplMDLGraphInstance

Members:
 classify(aOther)

Compare the path of the two instances to classify them.

Parameters:aOther (MDLNodeImpl) – The filter to compare to.
Returns:1 if itself is considered greater than the other node, -1 for the opposite. 0 in case of equality. 
 equals(other)

Check if this SBSObject is equivalent to the other SBSObject. Some members may be excluded from this check, the UIDs or GUILayout for instance.

Parameters:other (SBSObject) – The SBSObject to compare to
Returns:True if the two SBSObject are similar according to their definition. 
 getDefinition()

Get the definition of the node (Inputs, Outputs, Parameters)

Returns:a MDLNodeDef object 
 getDisplayName()
Returns:the display name of this node as a string 
 getInputDefinition(self, aInputIdentifier=None)

Get the input definition corresponding to the given identifier.

Parameters:aInputIdentifier (str, optional) – The identifier to get. If let None, the first input will be returned
Returns:the input definition as a MDLNodeDefInput if found, None otherwise 
 getOperand(aOperandName)

Get the operand with the given name

Returns:a MDLOperand object if found, None otherwise 
 getOperands()

Get the list of operands objects

Returns:a list of MDLOperand 
 getOutputType(aOutputIdentifier=None)

Get the output type of this node given the output identifier.

Parameters:aOutputIdentifier (str, optional) – The output identifier to look for. If None, the first output will be considered
Returns:The node output type as a string (color or float) if found, None otherwise 
 getParameter(aParameter=None)

Get the parameter with the given name among the parameters available on the node. aParameter can be None in case of a Constant or Selector node, where there is only one parameter.

Parameters:aParameter (str, optional) – Parameter identifier
Returns:The parameter if found (MDLParameter or MDLOperand), None otherwise 
 getParameterValue(aParameter=None)

Find a parameter with the given name among the parameters available on the node and return its value. aParameter can be None in case of a Constant or Selector node, where there is only one parameter.

Parameters:aParameter (str, optional) – Parameter identifier
Returns:The parameter value if found (string or MDLOperand, None otherwise 
 getUidIsUsed(aUID)

Check if the given uid is already used in the context of this SBSObject.

Parameters:aUID (str) – UID to check
Returns:True if the uid is already used, False otherwise
Raise:AttributeError if the function getUidIsUsed in not properly overloaded on this SBSObject 
 parse(aContext, aDirAbsPath, aSBSParser, aXmlNode)

Parse recursively the given xml node to retrieve the content of the SBSObject.

Parameters:
  • aContext (Context) – execution context
  • aDirAbsPath (str) – the absolute directory containing the current parsed package (.sbs file)
  • aSBSParser (SBSParser) – the substance parser
  • aXmlNode (xml.etree.ElementTree) – the xml node to parse 
 resetParameter(aParameter = None)

Reset the given parameter to its default value. aParameter can be None in case of a Constant or Selector node, where there is only one parameter.

Parameters:aParameter (str) – identifier of the parameter to reset
Returns:True if succeed, False otherwise
Raise:api_exceptions.SBSLibraryError 
 setParameterValue(aParameter, aParamValue)

Set the value of the given parameter to the given value, if compatible with this node.

Parameters:
  • aParameter (str) – identifier of the parameter to set
  • aParamValue (any parameter type) – value of the parameter
Returns:

True if succeed, False otherwise
Raise:

api_exceptions.SBSLibraryError

 
 write(aSBSWriter, aXmlNode)

Write recursively the content of the SBSObject into the given xml node.

Parameters:
  • aSBSWriter (SBSWriter) – the substance writer
  • aXmlNode (xml.etree.ElementTree) – the xml node to fill 
 class mdl.mdlcommon.MDLNodeImpl

Bases: pysbs.common_interfaces.sbsobject.SBSObject

This abstract class allows to provide a common interface for all MDL node implementation kind.

 classify(aOther)

Compare the path of the two instances to classify them.

Parameters:aOther (MDLNodeImpl) – The filter to compare to.
Returns:1 if itself is considered greater than the other node, -1 for the opposite. 0 in case of equality. 
 equals(other)

Check if this SBSObject is equivalent to the other SBSObject. Some members may be excluded from this check, the UIDs or GUILayout for instance.

Parameters:other (SBSObject) – The SBSObject to compare to
Returns:True if the two SBSObject are similar according to their definition. 
 getDefinition()

Get the definition of the node (Inputs, Outputs, Parameters)

Returns:a MDLNodeDef object 
 getDisplayName()
Returns:the display name of this node as a string 
 getInputDefinition(self, aInputIdentifier=None)

Get the input definition corresponding to the given identifier.

Parameters:aInputIdentifier (str, optional) – The identifier to get. If let None, the first input will be returned
Returns:the input definition as a MDLNodeDefInput if found, None otherwise 
 getOutputType(aOutputIdentifier=None)

Get the output type of this node given the output identifier.

Parameters:aOutputIdentifier (str, optional) – The output identifier to look for. If None, the first output will be considered
Returns:The node output type as a string (color or float) if found, None otherwise 
 getParameter(aParameter=None)

Get the parameter with the given name among the parameters available on the node. aParameter can be None in case of a Constant or Selector node, where there is only one parameter.

Parameters:aParameter (str, optional) – Parameter identifier
Returns:The parameter if found (MDLParameter or MDLOperand), None otherwise 
 getParameterValue(aParameter=None)

Find a parameter with the given name among the parameters available on the node and return its value. aParameter can be None in case of a Constant or Selector node, where there is only one parameter.

Parameters:aParameter (str, optional) – Parameter identifier
Returns:The parameter value if found (string or MDLOperand, None otherwise 
 getUidIsUsed(aUID)

Check if the given uid is already used in the context of this SBSObject.

Parameters:aUID (str) – UID to check
Returns:True if the uid is already used, False otherwise
Raise:AttributeError if the function getUidIsUsed in not properly overloaded on this SBSObject 
 parse(aContext, aDirAbsPath, aSBSParser, aXmlNode)

Parse recursively the given xml node to retrieve the content of the SBSObject.

Parameters:
  • aContext (Context) – execution context
  • aDirAbsPath (str) – the absolute directory containing the current parsed package (.sbs file)
  • aSBSParser (SBSParser) – the substance parser
  • aXmlNode (xml.etree.ElementTree) – the xml node to parse 
 resetParameter(aParameter = None)

Reset the given parameter to its default value. aParameter can be None in case of a Constant or Selector node, where there is only one parameter.

Parameters:aParameter (str) – identifier of the parameter to reset
Returns:True if succeed, False otherwise
Raise:api_exceptions.SBSLibraryError 
 setParameterValue(aParameter, aParamValue)

Set the value of the given parameter to the given value, if compatible with this node.

Parameters:
  • aParameter (str) – identifier of the parameter to set
  • aParamValue (any parameter type) – value of the parameter
Returns:

True if succeed, False otherwise
Raise:

api_exceptions.SBSLibraryError

 
 write(aSBSWriter, aXmlNode)

Write recursively the content of the SBSObject into the given xml node.

Parameters:
  • aSBSWriter (SBSWriter) – the substance writer
  • aXmlNode (xml.etree.ElementTree) – the xml node to fill 
 class mdl.mdlcommon.MDLObjectWithAnnotations(aAllowedAnnotations, aAnnotations)

Bases: object

This abstract class allows to provide a common interface for all MDL object with annotations.

 getAnnotation(aAnnotation)

Get the given annotation.

Parameters:aAnnotation (MDLAnnotationEnum or str) – The annotation to look for, as an enumeration or a mdl path
Returns:The annotation as a MDLAnnotation 
 getAnnotationValue(aAnnotation)

Get the value of the given annotation.

Parameters:aAnnotation (MDLAnnotationEnum or str) – The annotation to look for, as an enumeration or a mdl path
Returns:The annotation value as a string or list of string if found, None otherwise 
 getGroup()

Get the ‘in_group’ annotation value

Returns:The group/subgroup/subsubgroup value if found, None otherwise 
 getUsage()

Get the ‘sampler_usage’ annotation value

Returns:The ‘sampler_usage’ value if found, None otherwise 
 hasUsage(aUsage)

Check if the given usage is defined on this constant node

Parameters:aUsage (str or UsageEnum) – The usage to look for (can be an enum value or a custom string)
Returns:True if the given usage is defined on this param input, False otherwise 
 removeAnnotation(aAnnotation)

Remove the given annotation from the list of annotations

Parameters:aAnnotation (MDLAnnotationEnum or str) – The annotation to look for, as an enumeration or a mdl path 
 setAnnotation(aAnnotation, aAnnotationValue)

Set the given attribute

Parameters:
  • aAnnotation (MDLAnnotationEnum) – The annotation to set, as an enumeration or a mdl path
  • aAnnotationValue (str or list of str) – The value to set
Raise:

SBSImpossibleActionError

 
 setGroup(aGroup, aSubGroup=None, aSubSubGroup=None)

Set the ‘in_group’ annotation value with the given group and subgroups

Parameters:
  • aGroup (str) – The main group
  • aSubGroup (str, optional) – The sub-group
  • aSubSubGroup (str, optional) – The sub-sub-group 
 setUsage(aUsage)

Set the ‘sampler_usage’ annotation value with the given usage

Parameters:aUsage (str) – The usage to set

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