scriptCtx

Go to: Synopsis. Return value. Flags. MEL examples.

Synopsis

scriptCtx [-baseClassName string] [-cumulativeLists boolean] [-enableRootSelection boolean] [-exists] [-exitUponCompletion boolean] [-expandSelectionList boolean] [-finalCommandScript script] [-forceAddSelect boolean] [-history boolean] [-ignoreInvalidItems boolean] [-image1 string] [-image2 string] [-image3 string] [-lastAutoComplete boolean] [-name string] [-setAllowExcessCount boolean] [-setAutoComplete boolean] [-setAutoToggleSelection boolean] [-setDoneSelectionPrompt string] [-setNoSelectionHeadsUp string] [-setNoSelectionPrompt string] [-setSelectionCount int] [-setSelectionHeadsUp string] [-setSelectionPrompt string] [-showManipulators boolean] [-title string] [-toolCursorType string] [-toolFinish script] [-toolStart script] [-totalSelectionSets int] string

scriptCtx is undoable, queryable, and editable.

The command is processed prior to being executed. The keyword "$Selection#" where # is a number 1 or greater specifies a selection set. The context can specify several selection sets which are substituted in place of the $Selection# keyword in the form of a Mel string array. Items that are specific per set need to be specified in each set, if they are going to be specified for any of the sets. See examples below.

In addition, in order to specify the type of selection you need to be making, any of the selection type flags from "selectType" command can be used here.

Return value

In query mode, return type is based on queried flag.

Flags

Long name (short name)	Argument types	Properties
-baseClassName(-bcn)	string
This string will be used to produce MEL function names for the property sheets for the tool. For example, if "myScriptTool" was given, the functions "myScriptToolValues" and "myScriptToolProperties" will be used for the property sheets. The default is "scriptTool".
-cumulativeLists(-cls)	boolean
If set, the selection lists will be cumulative. For example, the second list will contain all the items from the first list, the third all the items from the second list etc. Make sure your script specified above takes that into account. Relevant if there is more than one selection set.
-enableRootSelection(-ers)	boolean
If set, the items to be selected are at their root transform level. Default is false.
-exists(-ex)
Returns true or false depending upon whether the specified object exists. Other flags are ignored.
-exitUponCompletion(-euc)	boolean
If set, completing the last selection set will exit the tool. Default is true.
-expandSelectionList(-esl)	boolean
If set, the selection lists will expand to have a single component in each item. You probably want this as a default, otherwise two isoparms on the same surface will show up as 1 item. To ensure that components on the same object are returned in the order in which they are selected, use the selectPref -trackSelectionOrder on command in your -toolStart script to enable ordered selection, then restore it to its original value in your -toolFinish script.
-finalCommandScript(-fcs)	script
Supply the script that will be run when the user presses the enter key and the context is completed. Depending on the number of selection sets you have, the script can make use of variables string $Selection1[], $Selection2[], ...
-forceAddSelect(-fas)	boolean
If set to true, together with -setAutoToggleSelection (see below) on the first selection set, causes the first selection after the computation of the previous result to be "shift" selection, unless a modifier key is pressed. Default is false. Flags for each selection set. These flags are multi-use.
-history(-ch)	boolean
If this is a tool command, turn the construction history on for the tool in question.
-ignoreInvalidItems(-iii)	boolean
If you have multiple selection sets, the state of the selection set is recorded at the time you "complete it". You could then delete some of the items in that list and end up with invalid items in one or more of your selection sets. If this flag is set, those items will be detected and ignored. You will never know it happened. Its as if they were never selected in the first place, except that your selection set now does not have as many items as it may need. If this flag is not set, you will get a warning and your final command callback script will likely not execute because of an error condition.
-image1(-i1)	string
First of three possible icons representing the tool associated with the context.
-image2(-i2)	string
Second of three possible icons representing the tool associated with the context.
-image3(-i3)	string
Third of three possible icons representing the tool associated with the context.
-lastAutoComplete(-lac)	boolean
True if auto complete is set for the last selection set, false otherwise. Mostly used for query, but if present in conjuction with -sac/setAutoComplete flag, -sac flag takes precedence.
-name(-n)	string
If this is a tool command, name the tool appropriately.
-setAllowExcessCount(-sae)	boolean
If set, the number if items is to be interpreted as the minimum.
-setAutoComplete(-sac)	boolean
If set to true, as soon as the specified number of items is selected the tool will start the next selection set or run the command.
-setAutoToggleSelection(-sat)	boolean
If set to true, it is as if "shift" key is pressed when there are no modifiers pressed. That means that you get the "toggle select" behaviour by default. This only applies to the 3D view, and the selection done in the hypergraph, outliner or elsewhere is still a subject to the usual rules.
-setDoneSelectionPrompt(-dsp)	string
If setAutoComplete is not set (see below) this string will be shown as soon as the tool has enough items for a particular selection set. If this is not set, but is needed, the same string as set with -setSelectionPrompt flag will be used.
-setNoSelectionHeadsUp(-snh)	string
Supply a string that will be shown as a heads up prompt when there is nothing selected. This must be set separately for each selection set.
-setNoSelectionPrompt(-snp)	string
Supply a string that will be shown as help when there is nothing selected. This must be set separately for each selection set.
-setSelectionCount(-ssc)	int
The number of items in this selection set. 0 means as many as you need until completion.
-setSelectionHeadsUp(-ssh)	string
Supply a string that will be shown as a heads up prompt when there is something selected. This must be set separately for each selection set.
-setSelectionPrompt(-ssp)	string
Supply a string that will be shown as help when there is something selected. This must be set separately for each selection set.
-showManipulators(-sm)	boolean
If set, the manipulators will be shown for any active objects. Basically, it is as if you are in the Show Manipulator tool.
-title(-t)	string
Supply a string that will be used as a precursor to all the messages; i.e., the "name" of the tool.
-toolCursorType(-tct)	string
Supply the string identifier to set the tool cursor type when inside of tool. The following are the valid ids: "create", "dolly", "edit", "pencil", "track", "trackHorizontal", "trackVertical", "transformation", "tumble", "zoom", "zoomIn", "zoomOut", "flyThrough", "dot", "fleur", "leftArrow", "question", "doubleHorizArrow", "doubleVertArrow", "sizing", "dollyIn", "dollyOut", "brush", "camera", "noAccess", "input", "output", "leftCycle", "rightCycle", "rightExpand", "knife".
-toolFinish(-tf)	script
Supply the script that will be run when the user exits the script.
-toolStart(-ts)	script
Supply the script that will be run when the user first enters the script
-totalSelectionSets(-tss)	int
Total number of selection sets.

Flag can appear in Create mode of command	Flag can appear in Edit mode of command
Flag can appear in Query mode of command	Flag can be used more than once in a command.

MEL examples

// Simple example of "attach curve" tool created using scriptCtx. This tool
// prompts the user to select two curves to attach. As soon as two curves
// are selected, the attach is performed. It uses the selection type
// flag 'curveParameterPoint' from "selectType" command to specify the
// selection mask for this tool.

scriptCtx
    -title "Attach Curve"
    -totalSelectionSets 1
    -fcs "select -r $Selection1; performAttachCrv 0 \"\";"
    -cumulativeLists true
    -expandSelectionList true
    -setNoSelectionPrompt "Select two curves close to the attachment points"
    -setSelectionPrompt "Select a second curve close to the attachment point"
    -setDoneSelectionPrompt "Never used because setAutoComplete is set"
    -setAutoToggleSelection true
    -setSelectionCount 2
    -setAutoComplete true
    -curveParameterPoint true
    attachTool;


// And a more complex example of fillet blend tool (two sets of any number
// of "surface curves").  Notice how the selection lists are passed as
// arguments to the callback function, performBlendGiven.

scriptCtx
           -i1 "blendSurface.png"

           -title "Fillet Blend Tool"
           -toolCursorType  "edit"
           -totalSelectionSets 2
           -cumulativeLists false
           -showManipulators true
           -expandSelectionList true
           -fcs ("performBlendGiven $Selection1 $Selection2")

           -setNoSelectionPrompt ("Select left edge surface curves.")
           -setSelectionPrompt ("Select additional surface curves for " +
                                "the left edge or hit ENTER to start " +
                                "the right edge selection.")

         -setAutoToggleSelection true
           -setAutoComplete false
           -setSelectionCount 0
         -isoparm true
         -curveOnSurface true
         -surfaceEdge true

           -setNoSelectionPrompt "Select right edge surface curves."
           -setSelectionPrompt ("Select additional surface curves " +
                                "for the right edge or hit " +
                                "ENTER to compute blend.")

         -setAutoToggleSelection true
         -setAutoComplete false
         -setSelectionCount 0
         -isoparm true                    // selectType flag
         -curveOnSurface true            // selectType flag
         -surfaceEdge true                // selectType flag

           blendContext;


// Here's Birail 3+ where you select any number of curves, then 2 rails:

       scriptCtx
           -i1 "birail3Gen.xpm"

           -title "Birail 3+ Tool"
           -toolCursorType "edit"
           -totalSelectionSets 2
           -cumulativeLists true
           -expandSelectionList true
           -fcs ("select -r $Selection2; " +
                 "performBirail 0 3 \"birailThreePlusProfileContext\"")

           -setNoSelectionPrompt "Select any number of profiles"
           -setSelectionPrompt "Select additional profiles or hit ENTER"
           -setDoneSelectionPrompt ("Profiles selected.  " +
                                    "Hit ENTER to start rail selection.")
         -setAutoToggleSelection true
           -setAutoComplete false
           -setSelectionCount 0
           -nurbsCurve true
         -isoparm true
         -curveOnSurface true
         -surfaceEdge true
           -polymeshEdge true

           -setNoSelectionPrompt "Select two rails"
           -setSelectionPrompt "Select the second rail"
           -setDoneSelectionPrompt ("Rails selected.  " +
                                    "Hit ENTER to compute birail.")
         -setAutoToggleSelection true
         -setAutoComplete false
         -setSelectionCount 2
           -nurbsCurve true
         -isoparm true
         -curveOnSurface true
         -surfaceEdge true
           -polymeshEdge true

           birailThreePlusProfileContext;


// userBirailContextCallback has "true" as the first argument, which suggests
// that $Selection2 contains all of $Selection1 items (as -cumulativeLists
// true is specified in the tool creation.)