draggerContext

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

Synopsis

draggerContext [-anchorPoint float float float] [-button int] [-currentStep int] [-cursor string] [-dragCommand script] [-dragPoint float float float] [-drawString string] [-exists] [-finalize script] [-history boolean] [-holdCommand script] [-image1 string] [-image2 string] [-image3 string] [-initialize script] [-modifier string] [-name string] [-plane float float float] [-prePressCommand script] [-pressCommand script] [-projection string] [-releaseCommand script] [-snapping boolean] [-space string] [-stepsCount int] [-undoMode string] [name]

draggerContext is undoable, queryable, and editable.

Return value

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

Flags

Long name (short name)	Argument types	Properties
-exists(-ex)
Returns true or false depending upon whether the specified object exists. Other flags are ignored.
-image1(-i1)	string
-image2(-i2)	string
-image3(-i3)	string
Contexts support up to three icons that represent the tool associated with the context.
-history(-ch)	boolean
If this is a tool command, turn the construction history on for the tool in question.
-name(-n)	string
If this is a tool command, name the tool appropriately.
-initialize(-inz)	script
Command called when the tool is entered.
-finalize(-fnz)	script
Command called when the tool is exited.
-prePressCommand(-ppc)	script
Command called when mouse dragger is pressed. It is called before pressCommand, so it can be used for initialization of context.
-pressCommand(-pc)	script
Command called when mouse dragger is pressed.
-dragCommand(-dc)	script
Command called when mouse dragger is dragged.
-releaseCommand(-rc)	script
Command called when mouse dragger is released.
-holdCommand(-hc)	script
Command called when mouse dragger is held.
-anchorPoint(-ap)	float float float
Anchor point (double array) where dragger was initially pressed.
-dragPoint(-dp)	float float float
Drag point (double array) current position of dragger during drag.
-projection(-pr)	string
Sets current projection of drag point. Valid types are: viewPlane project to view plane objectViewPlane project to object plane (parallel to view plane) objectPlane project to specified plane defined by object location and normal (default) 0,1,0 plane project to specified plane defined by origin and normal (default) 0,1,0 sketchPlane project to sketch plane xAxis project to closest point on X axis yAxis project to closest point on Y axis zAxis project to closest point on Z axis boundingSphere project to closest point on object sphere bounds boundingBox project to closest point on object bounding box
-plane(-pl)	float float float
Provide normal of projection plane (see -projection flag for details).
-space(-sp)	string
Sets current space that coordinates are reported in. Types are: world world space (global) object object space (local) screen screen space
-modifier(-mo)	string
Returns the current modifier type: ctrl, alt or none.
-button(-bu)	int
Returns the current mouse button (1,2,3).
-cursor(-cur)	string
Cursor displayed while context is active. Valid values are: "default", "hand", "crossHair", "dolly", "track", and "tumble".
-drawString(-ds)	string
A string to be drawn at the current position of the pointer.
-undoMode(-um)	string
Undo queue mode for the context actions. Acceptable values are: "all" default behaviour when every action that happens during dragger context activity is recorded as an individual undo chunk. "step" - all the actions that happen between each press and release are combined into one undo chunk. "sequence" - all the actions that happen between very first press and very last release are combined into single undo chunk. This works exactly the same as "step" for a single step dragger context.
-stepsCount(-sc)	int
Number of steps (press-drag-release sequences) for dragger context. When combined with undoMode flag, several steps might be recorded as single undo action.
-snapping(-snp)	boolean
Enable/disable snapping for dragger context.
-currentStep(-cs)	int
Current step (press-drag-release sequence) for dragger context. When queried before first press event happened, returns 0.

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

// Procedure called on press
global proc sampleContextPress()
{
    float $pressPosition[] = `draggerContext -query -anchorPoint sampleContext`;
    print ("Press: " + $pressPosition[0] + " " + $pressPosition[1] + " "
        + $pressPosition[2] + "\n");
}

// Procedure called on drag
global proc sampleContextDrag()
{
    float  $dragPosition[] = `draggerContext -query -dragPoint sampleContext`;
    int    $button     = `draggerContext -query -button sampleContext`;
    string $modifier   = `draggerContext -query -modifier sampleContext`;

    print ("Drag: " + $dragPosition[0] + " " + $dragPosition[1] + " "
        + $dragPosition[2]
        + "  Button is " + $button + "  Modifier is " + $modifier + "\n");

    string $message = ($dragPosition[0] + ", " + $dragPosition[1]);
    draggerContext -edit -drawString $message sampleContext;
}

// Create the dragger context
draggerContext
    -pressCommand "sampleContextPress"
    -dragCommand  "sampleContextDrag"
    -cursor       "hand"
    sampleContext;

// Set current tool to use the sample context created.
// Results can be seen by dragging mouse in main window
setToolTo sampleContext;