Is this the thing about invalidRect?
2013/3/28 Igor Stasenko <siguc...@gmail.com>:
> On 28 March 2013 12:05, Tristan Bourgois <tristan.bourg...@gmail.com> wrote:
>> Hi!
>>
>> I try to optimize the graphic framework I'm porting.
>> I have good performance but I have some problem to reDraw the morph of my
>> view.
>>
>> When I reDraw my morph I use 'invalidRect:' with the bound of the part
>> I want to reDraw but every step my morph is entirely reDraw.
>>
>> Does I have to use another method? Or someone can explain me how pharo
>> manage the repaint of morph?
>>
> The thing you looking for called clipping.
> Usually (and if possible) morph should try and detect what parts of his
> drawing
> needs to be updated and update only minimum part covered by clipping region.
> But that implies some internal knowledge about morph's geometry etc..
> and that's why a default implementation simply (re)draws everything.
>
>> Thanks :)
>>
>> I will ask today if I can make a video of my work because is very
>> impressive of what we can do on Pharo with the framework!
>>
> Please do.
>
>> And if the reDraw is functional we certainly have the same performance
>> with Pharo!
>>
> Come to see me and we will look how we can optimize it :)
>
>> So good news :)
>>
>> Tristan
>>
>
>
>
> --
> Best regards,
> Igor Stasenko.
>
