Code snippets of the UI initialization made for the BIM Analyzer Project

1_HierachyView.cs

/// <summary>
/// Monobehaviour attached to the hierachy view
/// </summary>
public class HierachyView : MonoBehaviour
{
    //NOTE: Member variables, Constructor and other Functions have been omitted from this code snippet
    
    /// <summary>
    /// Loads the hierachy view from the root ifc element
    /// </summary>
    /// <param name="rootElement"></param>
    public void LoadHierachyView(IfcElement rootElement)
    {
        var gameObject = Instantiate(hierachyPrefab, hierachyContent.transform);
        root = gameObject.GetComponent<HierachyItem>();
        root.SetupItem(this, rootElement, SiblingOrder.FIRST_CHILD, true, true);

        root.SetIfcType(rootElement.ifcType);
        root.SetName(rootElement.name);

        root.AddChildren(0, 0);

        //Select the root item after initializing
        selectedItem = root;
        SelectManager.Instance.Select(rootElement, root);
    }
}

2_HierachyItem.cs

/// <summary>
/// Monobehaviour for a hierachy item in the hierachy view
/// </summary>
public class HierachyItem : MonoBehaviour, IPointerClickHandler
{
    //NOTE: Member variables, Constructor and other Functions have been omitted from this code snippet

    /// <summary>
    /// Add the childern to this hierachy item
    /// </summary>
    /// <param name="depth"></param> Amount of steps we're in the hierachy tree
    /// <param name="noGuide"></param> Counter keeping track of the amount of guides that don't need a sprite (because we're in the last child of the depth shown by the counter)
    public void AddChildren(int depth, int noGuide)
    {
        //Sets up all the guide sprites
        for (int i = 0; i < depth; i++)
        {
            var gameObject = Instantiate(hierachyView.guidePrefab, nameObject);
            var image = gameObject.GetComponentInChildren<Image>();

            gameObject.transform.SetSiblingIndex(i);

            //Last guide is special, as we need it needs a L guide, rest of the guides are Vertical lines
            if (i == depth - 1)
            {
                lastGuide = image;
                lastGuide.sprite = hierachyView.GuideSprite(siblingOrder);
            }
            else
            {
                //If we don't need the guide to show, make it invisible
                if (i < noGuide)
                    image.color = Color.clear;
                image.sprite = hierachyView.Guide;
            }
        }

        //While initializing we only expand the 4 first elements
        bool expand = ++depth < 3;

        //If this is the last child in the sibling order, we can increase the noguide by 1
        if (siblingOrder == SiblingOrder.LAST_CHILD)
            noGuide++;

        //Load childern hierachy items
        for (int i = 0; i < element.childern.Count; i++)
        {
            SiblingOrder siblingOrder = i == element.childern.Count - 1 ? SiblingOrder.LAST_CHILD : SiblingOrder.MIDDLE_CHILD;
            IfcElement child = element.childern[i];

            var gameObject = Instantiate(hierachyView.hierachyPrefab, hierachyView.hierachyContent.transform);
            HierachyItem item = gameObject.GetComponent<HierachyItem>();
            item.SetupItem(hierachyView, child, siblingOrder, child.childern.Count != 0, expand);

            item.SetIfcType(child.ifcType);
            item.SetName(child.name);

            //Load elements recusively
            item.AddChildren(depth, noGuide);

            gameObject.SetActive(isExpanded);
            childern.Add(item);
            activeChildern.Add(item);
        }
    }
}