Class: AnimateIt::AnimationSet

Inherits:
Object
  • Object
show all
Defined in:
lib/animate_it/animation.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ AnimationSet

Returns a new instance of AnimationSet.



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# File 'lib/animate_it/animation.rb', line 20

def initialize
  @elements = {}
end

Instance Attribute Details

#elements ⇒ Object (readonly)

Returns the value of attribute elements.



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# File 'lib/animate_it/animation.rb', line 18

def elements
  @elements
end

Instance Method Details

#add(name, builder_block) ⇒ Object 



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# File 'lib/animate_it/animation.rb', line 24

def add(name, builder_block)
  builder = AnimatableBuilder.new(name)
  builder.instance_eval(&builder_block) if builder_block
  @elements[name.to_sym] = AnimatableElement.new(name: name.to_sym, properties: builder.properties)
end

#css_rules ⇒ Object

Emit <style> block content with [data-anim="name"] { … } rules. Generated once per AnimationSet (memoized).



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# File 'lib/animate_it/animation.rb', line 45

def css_rules
  @css_rules ||= @elements.values.map { |element| rules_for(element) }.join("\n")
end

#vars_for(scene) ⇒ Object

Compute the per-frame CSS variable hash for the entire set, given the current local_frame plus a beats registry to resolve symbolic ranges.



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# File 'lib/animate_it/animation.rb', line 32

def vars_for(scene)
  vars = {}
  @elements.each_value do |element|
    element.properties.each do |prop|
      value = compute_value(prop, scene)
      vars[var_key(element.name, prop.var_suffix)] = format_value(value, prop.unit)
    end
  end
  vars
end