Tweaking a ColorTransform object

The official docs say:

You must use the new ColorTransform() constructor to create a ColorTransform object before you can call the methods of the ColorTransform object.

So does this mean every time I want to tweak the color transform, I have to create a new instance? If so, the setter properties seem pretty pointless and my tests are showing this is the case.

So if eve开发者_开发知识库ry render I want to cycle say the redOffset based on time (to get a pulsing effect), do I have to manually create a new ColorTransform passing all constructor args from this.transform.colorTransform:

var newRedOffset:Number = ...
transform.colorTransform = new ColorTransform(
 transform.colorTransform.redMultiplier, transform.colorTransform.greenMultiplier,
 transform.colorTransform.blueMultiplier, transform.colorTransform.alphaMultiplier,

 newRedOffset, transform.colorTransform.greenOffset,
 transform.colorTransform.blueOffset, transform.colorTransform.alphaOffset );

It seems horrible, is there a shortcut?

---

rather than dealing with color multipliers and alpha offsets, here's a simple, straight forward way to change the color of a display object:

var ct:ColorTransform = new ColorTransform();
ct.color = 0xFF0000; //Simple Hex Color value

myDisplayObject.transform.colorTransform = ct;

this way you can change the color property of the same ColorTransform object and then reapply it to your display object.

---

No, it doesn't. You can use the colorTransform the object already has, but you need to reassign it after you have changed the values:

var trans:ColorTransform = sprite.transform.colorTransform;
trans.blueOffset += 10;
sprite.transform.colorTransform = trans;