51 lines
1.8 KiB
C#
51 lines
1.8 KiB
C#
using UnityEngine;
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public static class RendererExtensions
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{
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static void get_minMax(Vector2 point, ref Vector2 min, ref Vector2 max)
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{
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min = new Vector2(min.x >= point.x ? point.x : min.x, min.y >= point.y ? point.y : min.y);
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max = new Vector2(max.x <= point.x ? point.x : max.x, max.y <= point.y ? point.y : max.y);
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}
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public static Rect GetScreenRect(this Renderer renderer, Camera cam = null)
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{
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Vector3 cen = renderer.bounds.center;
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Vector3 ext = renderer.bounds.extents;
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cam = cam == null ? Camera.main : cam;
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float screenheight = Screen.height;
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Vector2 min = cam.WorldToScreenPoint(new Vector3(cen.x - ext.x, cen.y - ext.y, cen.z - ext.z));
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Vector2 max = min;
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Vector2 point = min;
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get_minMax(point, ref min, ref max);
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point = cam.WorldToScreenPoint(new Vector3(cen.x + ext.x, cen.y - ext.y, cen.z - ext.z));
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get_minMax(point, ref min, ref max);
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point = cam.WorldToScreenPoint(new Vector3(cen.x - ext.x, cen.y - ext.y, cen.z + ext.z));
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get_minMax(point, ref min, ref max);
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point = cam.WorldToScreenPoint(new Vector3(cen.x + ext.x, cen.y - ext.y, cen.z + ext.z));
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get_minMax(point, ref min, ref max);
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point = cam.WorldToScreenPoint(new Vector3(cen.x - ext.x, cen.y + ext.y, cen.z - ext.z));
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get_minMax(point, ref min, ref max);
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point = cam.WorldToScreenPoint(new Vector3(cen.x + ext.x, cen.y + ext.y, cen.z - ext.z));
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get_minMax(point, ref min, ref max);
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point = cam.WorldToScreenPoint(new Vector3(cen.x - ext.x, cen.y + ext.y, cen.z + ext.z));
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get_minMax(point, ref min, ref max);
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point = cam.WorldToScreenPoint(new Vector3(cen.x + ext.x, cen.y + ext.y, cen.z + ext.z));
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get_minMax(point, ref min, ref max);
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Vector3 centerScreenPos2 = cam.WorldToScreenPoint(renderer.bounds.center);
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return new Rect(centerScreenPos2.x, centerScreenPos2.y, max.x - min.x, max.y - min.y);
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}
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}
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