dsl_vertical_alignment example takes seconds to render each update

[dymk]

Tested with:

Vedeu 0.8.16 OSX 10.11.3 iTerm 2 (v3 Beta) and Terminal.app

This is a pretty bad performance bug, running the dsl_vertical_alignment.rb is horrendously slow (each refresh takes ~4 seconds), when pressing one of 'hjkl' to move around the middle square. Is there any low hanging fruit here to pluck?

[gavinlaking]

The biggest cost is the fact that both dsl_vertical_alignment.rb and dsl_horizontal_alignment.rb use multiple renderers. I disabled the text renderer which writes to the filesystem (Vedeu::Renderers::Text) and my refresh time is reduced to a still unacceptable 350ms. Ideally, I'd like to get this down to 60fps (16.67ms), so there is work to be done.

Pull requests are always welcome, but in their absence, patience is appreciated :-D

Gav

[gavinlaking]

Refresh time for me is between 250ms and 300ms now, still a fair way to go to reach ~16ms.

[gavinlaking]

Refresh time for me is between 150ms and 200ms as of 612eb37.