73 lines
No EOL
1.7 KiB
C#
73 lines
No EOL
1.7 KiB
C#
using UnityEngine;
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namespace Trive.Assets.Scripts.Utils.Extensions
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{
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public static class RectExtensions
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{
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/// <summary>
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/// Scales a rect by a given amount around its center point
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/// </summary>
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/// <param name="rect">
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/// The given rect
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/// </param>
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/// <param name="scale">
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/// The scale factor
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/// </param>
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/// <returns>
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/// The given rect scaled around its center
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/// </returns>
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public static Rect ScaleSizeBy(this Rect rect, float scale)
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{
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return rect.ScaleSizeBy(scale, rect.center);
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}
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/// <summary>
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/// Scales a rect by a given amount and around a given point
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/// </summary>
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/// <param name="rect">
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/// The rect to size
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/// </param>
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/// <param name="scale">
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/// The scale factor
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/// </param>
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/// <param name="pivotPoint">
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/// The point to scale around
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/// </param>
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/// <returns>
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/// The rect, scaled around the given pivot point
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/// </returns>
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public static Rect ScaleSizeBy(this Rect rect, float scale, Vector2 pivotPoint)
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{
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var result = rect;
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//"translate" the top left to something like an origin
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result.x -= pivotPoint.x;
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result.y -= pivotPoint.y;
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//Scale the rect
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result.xMin *= scale;
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result.yMin *= scale;
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result.xMax *= scale;
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result.yMax *= scale;
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//"translate" the top left back to its original position
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result.x += pivotPoint.x;
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result.y += pivotPoint.y;
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return result;
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}
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public static Rect Encapculate(this Rect rect, Vector2 point)
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{
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var min = rect.min;
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var max = rect.max;
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min.x = Mathf.Min(min.x, point.x);
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min.y = Mathf.Min(min.y, point.y);
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max.x = Mathf.Max(max.x, point.x);
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max.y = Mathf.Max(max.y, point.y);
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return new Rect(min.x, min.y, max.x - min.x, max.y - min.y);
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}
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}
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} |