;; This file simply gives the defaults for the Scheme variables ;; used in the option box. (ui-symbol "frame" 0) (ui-string "frame"                      "Frame")

;; This file defines the option box (ui-editor "frame.options" (list 'symbols  'frame )          (list 'title "View Frame Options")          (ui-integer-widget "frame" (list 'range 0 65535)         )  )

#include <AlUniverse.h> 

#include <AlViewFrame.h> 

#include <AlPickList.h> 

#include <AlObject.h>  

#include <AlLiveData.h> 

#include <AlFunction.h> 

#include <AlFunctionHandle.h> 

#include <AlIterator.h>  

#include <strings.h>   

// A simple iterator used to pass the frame number 

// along when viewing an object. 

class viewIterator: public AlIterator 

{ 

	public: 

	viewIterator( double frame = 0.0 )

 				: frameNum( frame ) {};

 		virtual	~viewIterator() {};

  		virtual	int func( AlObject* );

  	private:

 		double frameNum; };

// The iterator's one and only method. Does a viewframe 

// on the passed in object using the frame number in the 

// iterator object.

 int viewIterator::func( AlObject* obj ) {

 	if ( obj == NULL )

 		return 0;

  	AlAnimatable*	animitem;

 	AlCurve*		curve;

 	AlSurface*		surface;

  	AlObjectType	type = obj->type();

  	if( animitem = obj->asAnimatablePtr() )

 		AlViewFrame::viewFrame( animitem, frameNum, AlViewFrame::kObjectAndBelow );

 	else if( curve = obj->asCurvePtr() )

 		AlViewFrame::viewFrame( curve, frameNum );

 	else if( surface = obj->asSurfacePtr() )

 		AlViewFrame::viewFrame( surface, frameNum );

 	else 		AlPrintf( kPrompt, "Sorry, %s is not a viewable object", obj->name() );

 		;	// a non viewable object

 	return 0;

 }

  // The actual plug-in function.

 void my_view()

 {

 	int		frameNum;

  	// Get the frame number from the option box.

 	if( sSuccess == AlGetInteger( "frame", frameNum ) )

 	{

 		// Print the number to the promptline.

 		AlPrintf( kPrompt, "Viewing frame %d.", frameNum );

  		// Instantiate an iterator and apply it to all picked 

		// objects.

 		int rc; 

		viewIterator*	view = new viewIterator( frameNum );

 		if ( sSuccess != AlPickList::applyIteratorToItems( view, rc ) )

 			AlPrintf( kPrompt, "Iterator failed." );

 		if ( rc != 0 )

 			AlPrintf( kPrompt, "Return code is %d.", rc );

  		AlPrintf( kPrompt, "Viewing complete." );

 	} }

// This handle may have to be global if you wish to remove the

// plug-in from the menu using the h.destroy() method in the

// 'momentary_exit' function.

// The menu entry is automatically removed when Alias exits.

// 

static AlFunctionHandle h; 

static AlMomentaryFunction hFunc;

extern "C" int 

PLUGINAPI_DECL int plugin_init( const char *dirName ) 

// 

// This routine initializes the plugins and attaches it to the menu. 

// It returns 0 if there is no initialization error. 

// { 	char *dirScm; 

 	// Initialize the universe. This must be done by all

 	// plug-ins. If the universe is not initialized the plug-in

 	// will fail.

 	AlUniverse::initialize( );

  	dirScm = makeAltPath(dirName,"scm");

  	// Invoke the scheme file which sets defaults for the scheme

 	// variables.

 	AlInvokeSchemeFile( "frame_init.scm", dirScm ); 

 	// Allocate a function handle. The first argument is the label on

 	// the menu and the second is the function to invoke when the

 	// menu item is selected.

 	hFunc.create( my_view );

 	h.create( "View Frame", &hFunc );

   	// Define the attribute string for the attribute line below

 	// the prompt line. 	h.setAttributeString( "viewframe" );

  	// Read in the option box. The first argument is the

 	// option box in $ALIAS_WORKENV, and

 	// the second argument is the name of the option box given

 	// in the scheme file. The third argument is a directory

 	// path(possibly NULL) where to look for the scheme file.

 	// If a call to this method is omitted, there will be no option box.

     if ( sSuccess != h.setOptionBox( "frame.scm", "frame.options", dirScm) ) {

         AlPrintf(

  			kPrompt,

  			"Frame plug-in unable to find .scm file for option box"

 		);

         return (1);

     }

   	// Indicate which menu to add the plugin to. addToMenu()

 	// adds the plugin to the bottom of the menu, while

 	// appendToMenu() will add it to the top of the menu.

 	h.addToMenu( "mp_objtools" );

  	h.setIconPath( makeAltPath( dirName, NULL ) );

  	// Return a success code.

 	// Returning a non zero indicates an error.

 	// An error value ( a non-zero ) will be printed on the prompt

 	// line in Alias.

 	AlPrintf( kPrompt, "Frame attached to Palette 'Object Edit'");

 	return 0;

 }  

extern "C" 

PLUGINAPI_DECL int plugin_exit( void )

{

 	// Remove the plugin from the menu and free the FunctionHandle.

 	// Note that h.destroy() implicitly calls h.removeFromMenu()

 	h.deleteObject();

 	hFunc.deleteObject();

 	return 0;

 }