Jay McGavren's Journal

Thread.pass...

zyps_demo is locking up the interface so that it won’t respond to window close events until the demo is done. The zyps executable itself will presumably lock up as well. But via a Google search, Alex Fenton has (inadvertently) helped me out a second time…

"using Wx::Timer + Thread.pass + evt_timer inside App#on_init seems to work well on OS X (dev, not 0.0.39), GTK (both) and Windows (both)."

The problem is present in my brief wxRuby test as well, so here’s a revised version of that, which plays much nicer…

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I’m having a very productive day today. Panic will do that to you.

Here we go… ruby-prof said wxRuby was spending a lot of time initializing memory device contexts (canvases to draw on)…

 %self     total     self     wait    child    calls  name
 45.42      5.63     5.63     0.00     0.00      120  Kernel#sleep
  8.85      2.05     1.10     0.00     0.95    28440  WxRubyStyleAccessors#method_missing
  5.16      0.64     0.64     0.00     0.00     9520  Wxruby2::MemoryDC#initialize
  4.42      5.14     0.55     0.00     4.59     9520  Wxruby2::Bitmap#draw

That would be because I was doing so before each line I drew.

	def draw_line(options = {})
		buffer.draw do |surface|
			surface.pen = Wx::Pen.new(
...
		end
	end

So as a quick fix, I’m queueing my shapes and drawing everything at once. This brought me about in line with Ruby-Gnome2, speed-wise:

	def draw_line(options = {})
		@line_queue << options
	end

	def render_lines
		buffer.draw do |surface|
			while options = @line_queue.shift do
				surface.pen = Wx::Pen.new(
...
			end
		end
	end

 %self     total     self     wait    child    calls  name
 69.41     11.27    11.27     0.00     0.00      240  Kernel#sleep
  4.24      1.83     0.69     0.00     1.14    30600  WxRubyStyleAccessors#method_missing
  2.96      4.17     0.48     0.00     3.69      480  Wxruby2::Bitmap#draw
  2.41      0.39     0.39     0.00     0.00    40640  Regexp#===

Though I made a pretty big memory structure to do it. I’ll have to slim that down at some point.

Now it says it’s spending a lot of time initializing colors (Colours?) and pens. Will I have to cache those? Hope not.