[Maya] Create UVPin with MEL
How to create uv pins via mel command in Maya - 11/2023 - #Jumble
It seems the command UVPin
relies on optionVar rather than standard command parameters, so I had to dig through the built in python code that defines the UVPin command: here is how to call it without changing the preset parameters of the "UV Pin Options" window:
/* Equivalent to: UV Pin Options window found in Rigging -> Constraints -> UV Pin Here we preset parameters to create locators as UV pins */ { /* (Python code it was extracted from) Default parameters for UVPin command: //C:\Program Files\Autodesk\Maya2024\Python\Lib\site-packages\maya\internal\nodes\uvpin\cmd_create.py 'normalAxis': pin_ifc.eAxisType.kXAxis, 'tangentAxis': pin_ifc.eAxisType.kYAxis, 'outputConnect': pin_ifc.eXformIO.kCurrent, 'setupMode' : ePinUVSetupMode.kTransforms, 'uvSetName' : '', 'relativeSpaceMode' : pin_ifc.eSpaceMode.kWorld, 'normalizedIsoParms': True class ePinUVSetupMode(object): kComponents = 0 kTransforms = 1 // Python\Lib\site-packages\maya\internal\nodes\common\pin\node_interface.py class eAxisType(object): kXAxis = 0 kYAxis = 1 kZAxis = 2 kNXAxis = 3 kNYAxis = 4 kNZAxis = 5 kNoneAxis = 6 class eXformIO(object): kCurrent = 0 kMatrix = 1 kNull = 2 # i.e just a transform. kLocator = 3 class eSpaceMode(object): kWorld = 0 kLocal = 1 kCustom = 2 */ // Select mesh first string $selections[] = `ls -selection`; if( size($selections) < 0 ){ warning("Select a mesh then joints or controllers"); return; } // check first element is a mesh: string $mesh = get_shape($selections[0]); if( nodeType($mesh) != "mesh" ){ warning("Select a mesh *first* then joints or controllers"); return; } // *then* select joints // skip the check // setup default values int $normalAxisValue = 0; int $tangentAxisValue = 1; int $outputConnectValue = 0; int $setupModeValue = 1; string $uvSetNameValue = ""; int $relativeSpaceModeValue = 0; int $normalizedIsoParmsValue = 1; // Get the values if it exists: if (`optionVar -exists UVPinnormalAxis`) $normalAxisValue = `optionVar -q UVPinnormalAxis`; if (`optionVar -exists UVPintangentAxis`) $tangentAxisValue = `optionVar -q UVPintangentAxis`; if (`optionVar -exists UVPinoutputConnect`) $outputConnectValue = `optionVar -q UVPinoutputConnect`; if (`optionVar -exists UVPinsetupMode`) $setupModeValue = `optionVar -q UVPinsetupMode`; if (`optionVar -exists UVPinuvSetName`) $uvSetNameValue = `optionVar -q UVPinuvSetName`; if (`optionVar -exists UVPinrelativeSpaceMode`) $relativeSpaceModeValue = `optionVar -q UVPinrelativeSpaceMode`; if (`optionVar -exists UVPinnormalizedIsoParms`) $normalizedIsoParmsValue = `optionVar -q UVPinnormalizedIsoParms`; // Set the values of option variables for UVPin optionVar -intValue UVPinnormalAxis 0; // X optionVar -intValue UVPintangentAxis 1; // Y optionVar -intValue UVPinoutputConnect 3; // Locator optionVar -intValue UVPinsetupMode 1; // Transforms optionVar -stringValue UVPinuvSetName ""; // Default UV set optionVar -intValue UVPinrelativeSpaceMode 0; // World optionVar -intValue UVPinnormalizedIsoParms 1; // True // Launch the UVPin command UVPin; // restore option variables optionVar -intValue UVPinnormalAxis $normalAxisValue; optionVar -intValue UVPintangentAxis $tangentAxisValue; optionVar -intValue UVPinoutputConnect $outputConnectValue; optionVar -intValue UVPinsetupMode $setupModeValue; optionVar -stringValue UVPinuvSetName $uvSetNameValue; optionVar -intValue UVPinrelativeSpaceMode $relativeSpaceModeValue; optionVar -intValue UVPinnormalizedIsoParms $normalizedIsoParmsValue; }
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