I might be doing this wrong, but I went through the install steps:

gem install compass-rmagick-engine

And added these lines to the top of my config.rb file:

require 'compass-rmagick-engine'
sprite_engine = :rmagick;

...but when I go to "compass watch" and a CSS file has changed, I get the following error:

Change detected to: all.scss
NoMethodError on line 22 of /Users/dougavery/.rvm/gems/ree-1.8.7-2011.03/gems/compass-0.11.3/lib/compass/sass_extensions/sprites/sprite_methods.rb: undefined method `new' for Compass::SassExtensions::Sprites::RmagickEngine:Module

Any ideas? Looking for a way around chunky_png until the awesome new config options arrive in 0.11.4...

Thanks!

When I create a sprite that has spacing, it renders the entire sprite with a white background.

For example:

$icon: sprite-map('icon/*.png', $position: 0%, $spacing: 100px, $repeat: no-repeat);
@import 'icon/*.png';

However, the transparency of the individual images is maintained. Only the background of the spacing is white. It occurs with 8-bit PNGs, 24-bit PNGs, and I have also tried it with mixed bit depths.

Why does this happen? As a workaround I'm using the default sprite engine, which renders the spacing correctly (transparent). But it's really slow...

Is this planned or would it make sense to create a new gem?

hi, could this engine be used somehow to produce JPG sprites, please?