-// static Handle create(ValueBase::Type id=ValueBase::TYPE_GRADIENT);
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- bool set_gradient(ValueNode::Handle a);
- ValueNode::Handle get_gradient()const { return gradient_; }
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- bool set_count(ValueNode::Handle b);
- ValueNode::Handle get_count()const { return count_; }
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- bool set_width(ValueNode::Handle x);
- bool set_specify_start(ValueNode::Handle a);
- bool set_specify_end(ValueNode::Handle a);
- bool set_start_color(ValueNode::Handle a);
- bool set_end_color(ValueNode::Handle a);
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