66 lines
2.0 KiB
C#
66 lines
2.0 KiB
C#
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/// Credit Simon (darkside) Jackson
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/// Sourced from - My head
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namespace UnityEngine.UI.Extensions
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{
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public static class UIExtensionMethods
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{
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public static Canvas GetParentCanvas(this RectTransform rt)
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{
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RectTransform parent = rt;
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Canvas parentCanvas = rt.GetComponent<Canvas>();
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int SearchIndex = 0;
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while (parentCanvas == null || SearchIndex > 50)
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{
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parentCanvas = rt.GetComponentInParent<Canvas>();
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if (parentCanvas == null)
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{
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parent = parent.parent.GetComponent<RectTransform>();
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SearchIndex++;
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}
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}
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return parentCanvas;
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}
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public static Vector2 TransformInputBasedOnCanvasType(this Vector2 input, Canvas canvas)
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{
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if (canvas.renderMode == RenderMode.ScreenSpaceOverlay)
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{
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return canvas.GetEventCamera().ScreenToWorldPoint(input);
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}
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else
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{
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return input;
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}
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}
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public static Vector3 TransformInputBasedOnCanvasType(this Vector2 input, RectTransform rt)
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{
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var canvas = rt.GetParentCanvas();
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if (input == Vector2.zero || canvas.renderMode == RenderMode.ScreenSpaceOverlay)
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{
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return input;
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}
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else
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{
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// Needs work :S
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Vector2 movePos;
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RectTransformUtility.ScreenPointToLocalPointInRectangle(
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rt,
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input, canvas.GetEventCamera(),
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out movePos);
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Vector3 output = canvas.transform.TransformPoint(movePos);
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return output;
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}
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}
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public static Camera GetEventCamera(this Canvas input)
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{
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return input.worldCamera == null ? Camera.main : input.worldCamera;
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}
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}
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}
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