[Tweener] _DisplacementMap_mapPoint_x?

[Mitch Rosefelt]

Thanks Zeh:
I've got this working by animating w/out Tweener, but the mapPoint tween 
is definitely throwing an error.
In the code below, the Tweener based scaling works, but not the 
mapPoint.  Also, the displacement scale pops back to its initial value 
when the Tween is complete (perhaps user error?)

import flash.display.BitmapData;
import flash.display.Loader;
import flash.events.MouseEvent;
import flash.filters.DisplacementMapFilter;
import flash.geom.Point;

import caurina.transitions.Tweener;
import caurina.transitions.properties.*;
caurina.transitions.properties.FilterShortcuts.init(); // _Displacement_*
caurina.transitions.properties.DisplayShortcuts.init(); // _scale

var objToDisplace:MovieClip = dog_mc;
var dispSourceMap:MovieClip = dispShere_mc;

// Convert MC to Bitmap to use as displacement map
var dispMap:BitmapData  = new BitmapData (this.dispSourceMap.width, 
this.dispSourceMap.height, false, 0x00808080);
var mtx:Matrix = new Matrix();
mtx.translate(this.dispSourceMap.width/2, this.dispSourceMap.height/2);

// Add image to displacement map
dispMap.draw(this.dispSourceMap, mtx);
this.dispSourceMap.visible = false;

//Create Displacement Map Filter
//Choices for pixels outside of map are INGNORE, WRAP, CLAMP, COLOR
var dmf:DisplacementMapFilter = new DisplacementMapFilter;
dmf.mapBitmap = dispMap;
// Center the displacement the object
dmf.mapPoint = new Point(objToDisplace.width/2-dispMap.width/2, 
objToDisplace.height/2-dispMap.height/2);
//trace (objToDisplace.name+": Height is 
"+objToDisplace.height+dmf.mapPoint);
dmf.componentX = BitmapDataChannel.RED;
dmf.componentY = BitmapDataChannel.BLUE;
dmf.mode = DisplacementMapFilterMode.WRAP;
dmf.scaleX = 30;
dmf.scaleY = 30;
objToDisplace.filters = [dmf];


//trace (objToDisplace.width);
addEventListener(Event.ENTER_FRAME, onEnterFrame);
function onEnterFrame(event:Event):void
{
    objToDisplace.filters = [dmf];
}

//Tweener.addTween(objToDisplace,{x:(objToDisplace.x - 40), time:3, 
delay:1, transition:"linear"});
Tweener.addTween(objToDisplace,{_DisplacementMap_mapPoint_x:(objToDisplace.x 
+ 40), time:3, delay:1, transition:"linear"}); //Error

Tweener.addTween(objToDisplace,{_DisplacementMap_scaleX:120, time:3, 
transition:"linear"}); //Works, but resets when finished



Zeh Fernando wrote:
> Hey Mitch,
>
> I'm not really sure what's happening. If FilterShortcuts is properly 
> inited before the tween, it should work.
>
> Zeh
>
> Mitch Rosefelt wrote:
>> Hi All:
>> I'm trying to use the _DisplacementMap_mapPoint_x to hold a 
>> displacement map in place while the object being displaced is moved 
>> across the Stage.
>> At this point the displacement is being applied and the object moves 
>> across the screen with the displacement.
>> When I run the movie, it plays, but I get this error:
>> ## [Tweener] Error: The property '_DisplacementMap_mapPoint_x' 
>> doesn't seem to be a normal object property of [object MovieClip] or 
>> a registered special property.
>> I'm able to run the "Beating Heart" example (which is tre cool) with 
>> no problem.
>>
>> Any suggestions will be appreciated.
>> Thanks.
>> Mitch
>>
>> // Code:
>>
>> import flash.display.BitmapData;
>> import flash.display.Loader;
>> import flash.events.MouseEvent;
>> import flash.filters.DisplacementMapFilter;
>> import flash.geom.Point;
>>
>> import caurina.transitions.Tweener;
>> import caurina.transitions.properties.*;
>> caurina.transitions.properties.FilterShortcuts.init(); // 
>> _Displacement_*
>> caurina.transitions.properties.DisplayShortcuts.init(); // _scale
>>
>> var objToDisplace:MovieClip = dog_mc;
>>
>> Tweener.addTween(objToDisplace,{x:(objToDisplace.x - 40), time:3, 
>> delay:1, transition:"linear"});
>> //Move the displacement map in the opposite direction:
>> Tweener.addTween(objToDisplace,{_DisplacementMap_mapPoint_x:(objToDisplace.x 
>> + 40), time:3, delay:1, transition:"linear"});
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>>
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