Contents

#
# Edge Detection
# 
# Change the default shader to apply a simple, custom edge detection filter.
# 
# Press the mouse to switch between the custom and default shader.
#
attr_reader :edges, :img , :enabled


def setup
  size(640, 360, P2D)
  @enabled = true
  @img = load_image('leaves.jpg');      
  @edges = load_shader('edges.glsl')
end

def draw
  shader(edges) if enabled
  image(img, 0, 0)
end

def mousePressed
  @enabled = !enabled
  if (!enabled == true)
    resetShader
  end
end

Version data entries

6 entries across 6 versions & 1 rubygems

Version	Path
ruby-processing-2.6.3	samples/processing_app/topics/shaders/edge_detect.rb
ruby-processing-2.6.2	samples/processing_app/topics/shaders/edge_detect.rb
ruby-processing-2.6.1	samples/processing_app/topics/shaders/edge_detect.rb
ruby-processing-2.6.0	samples/processing_app/topics/shaders/edge_detect.rb
ruby-processing-2.5.1	samples/processing_app/topics/shaders/edge_detect.rb
ruby-processing-2.5.0	samples/processing_app/topics/shaders/edge_detect.rb