创建 UI 的工具类收集

创建一个 TextMesh

注意：TextMesh 和 Text 是有区别的

第一个重置是默认创建，第二个是完整的参数

namespace AlsRitter.Utils
{
    public class UtilsClass
    {
        public const int sortingOrderDefault = 5000;

        // Create Text in the World
        public static TextMesh CreateWorldText(
            string text,
            Transform parent = null,
            Vector3 localPosition = default(Vector3),
            int fontSize = 40,
            Color? color = null,
            TextAnchor textAnchor = TextAnchor.UpperLeft,
            TextAlignment textAlignment = TextAlignment.Left,
            int sortingOrder = sortingOrderDefault)
        {
            if (color == null) color = Color.white;
            return CreateWorldText(parent, text, localPosition, fontSize, (Color) color, textAnchor, textAlignment,
                sortingOrder);
        }

        // Create Text in the World
        public static TextMesh CreateWorldText(Transform parent, string text, Vector3 localPosition, int fontSize,
            Color color, TextAnchor textAnchor, TextAlignment textAlignment, int sortingOrder)
        {
            GameObject gameObject = new GameObject("World_Text", typeof(TextMesh));
            Transform transform = gameObject.transform;
            transform.SetParent(parent, false);
            transform.localPosition = localPosition;

            TextMesh textMesh = gameObject.GetComponent<TextMesh>();
            textMesh.anchor = textAnchor;
            textMesh.alignment = textAlignment;
            textMesh.text = text;
            textMesh.fontSize = fontSize;
            textMesh.color = color;
            textMesh.GetComponent<MeshRenderer>().sortingOrder = sortingOrder;
            return textMesh;
        }
    }
}

创建一个 TextUI

在指定位置创建一个 Text UI

private static readonly Vector3 Vector3zero = Vector3.zero;
private static readonly Vector3 Vector3one = Vector3.one;

public static Text DrawTextUI(string textString, Transform parent, Vector2 anchoredPosition, int fontSize, Font font)
{
    // 创建一个对象并在它身上挂载组件
    GameObject textGo = new GameObject("Text", typeof(RectTransform), typeof(Text));

    textGo.transform.SetParent(parent, false);

    Transform textGoTrans = textGo.transform;
    textGoTrans.SetParent(parent, false);
    textGoTrans.localPosition = Vector3zero;
    textGoTrans.localScale = Vector3one;

    RectTransform textGoRectTransform = textGo.GetComponent<RectTransform>();
    textGoRectTransform.sizeDelta = new Vector2(0, 0);
    textGoRectTransform.anchoredPosition = anchoredPosition;

    Text text = textGo.GetComponent<Text>();
    text.text = textString;
    text.verticalOverflow = VerticalWrapMode.Overflow;
    text.horizontalOverflow = HorizontalWrapMode.Overflow;
    text.alignment = TextAnchor.MiddleLeft;

    if (font == null) font = GetDefaultFont();

    text.font = font;
    text.fontSize = fontSize;
    return text;
}

public static Font GetDefaultFont()
{
    return Resources.GetBuiltinResource<Font>("Arial.ttf");
}