Re: [css-masking] multiple mask layers and mask-composite

On Mar 5, 2014, at 6:02 PM, fantasai <fantasai.lists@inkedblade.net> wrote:

> On 03/05/2014 03:15 AM, Dirk Schulze wrote:
>> 
>>> I vaguely remember the problem being something about choosing between
>>>  - each layer acts individually as a mask over all the layers+content
>>>    before it
>>> vs.
>>>  - composite all the mask images, then use that as a mask
>>> and then the possibility of grouping certain combinations of images
>>> rather than all or none. Does your proposal address that in a reasonable
>>> way?
>> 
>> I believe so. Not only that, it provides much more control over the content,
>> many people familiar with globalCompositeOperators from HTML canvas will
>> appreciate having the same capabilities.
>> 
>> The two modes you mention can be archived with source-over (draw layers
>> on top of each other and mask together) and destination-in (mask each
>> layer with the the next layer and then mask content with the result).
> 
> Can you give an example that would accomplish the two behaviors above?
> Do I need to be careful with the operator assigned to the last image,
> for example?

I added 3 images to the compositing examples[1]. It hope it make things more clear. Please take a look at the examples.

Greetings,
Dirk

[1] http://dirkschulze.github.io/specs/css-masking-1/#the-mask-composite

> 
> ~fantasai
> 

Received on Wednesday, 5 March 2014 20:50:20 UTC