Layer_Composite& set_blend_method(Color::BlendMethod x) { blend_method_=x; return *this; }
bool is_solid_color()const { return amount_==1.0f && blend_method_==Color::BLEND_STRAIGHT; }
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bool is_disabled()const { return amount_==0.0f; }
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virtual Vocab get_param_vocab()const;
virtual bool set_param(const String ¶m, const ValueBase &value);