assets/samples/Samples/CreateComplexAreaRein/CS/AreaReinData.cs

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namespace Revit.SDK.Samples.CreateComplexAreaRein.CS
{
    using System.Collections.Generic;

    using Autodesk.Revit.DB;
    using Autodesk.Revit.DB.Structure;

    /// <summary>
    /// data and data manager of the AreaReinforcement
    /// </summary>
    public class AreaReinData
    {
        private Document m_doc;

        /// <summary>
        /// constructor
        /// </summary>
        public AreaReinData(Document doc)
        {
            m_doc = doc;
        }

        private LayoutRules m_layoutRule = LayoutRules.Maximum_Spacing;

        /// <summary>
        /// Parameter LayoutRule of AreaReinforcement
        /// </summary>
        public LayoutRules LayoutRule
        {
            get
            {
                return m_layoutRule;
            }
            set
            {
                m_layoutRule = value;
            }
        }

        /// <summary>
        /// set the parameters to given AreaReinforcement
        /// </summary>
        /// <param name="areaRein"></param>
        public virtual void FillIn(AreaReinforcement areaRein)
        {
            int temp = (int)m_layoutRule;
            bool flag = ParameterUtil.SetParaInt(areaRein,
                BuiltInParameter.REBAR_SYSTEM_LAYOUT_RULE, temp);
            //if BuiltInParameter doesn't work
            if (!flag)
            {
                Parameter paraLayout = ParameterUtil.FindParaByName(
                    areaRein.Parameters, "Layout Rule");
                if (null != paraLayout)
                {
                    paraLayout.Set(temp);
                }
            }
            ChangeAreaReinCurves(areaRein);
        }

        /// <summary>
        /// On the interior 4 curves, set the override flag 
        /// and flip the hooks on the top 2 layers to "up"
        /// </summary>
        /// <param name="areaRein"></param>
        private void ChangeAreaReinCurves(AreaReinforcement areaRein)
        {
            //interior 4 curves are listed in the back of the curves, 
            //this order is decided when we create it
            IList<ElementId> curveIds = areaRein.GetBoundaryCurveIds();
            for (int i = 4; i < 8; i++)
            {
                AreaReinforcementCurve areaReinCurve =
                    m_doc.GetElement(curveIds[i]) as AreaReinforcementCurve;
                //remove hooks, set the hook the top 2 layers to 'up'
                ParameterUtil.SetParaInt(areaReinCurve,
                    BuiltInParameter.REBAR_SYSTEM_OVERRIDE, -1);
                ParameterUtil.SetParaInt(areaReinCurve,
                    BuiltInParameter.REBAR_SYSTEM_HOOK_ORIENT_TOP_DIR_1,
                    (int)HookOrientation.Up);
                ParameterUtil.SetParaInt(areaReinCurve,
                    BuiltInParameter.REBAR_SYSTEM_HOOK_ORIENT_TOP_DIR_2,
                    (int)HookOrientation.Up);
            }
        }
    }
}