33 lines
739 B
C#
33 lines
739 B
C#
using UnityEngine;
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namespace Coffee.UIExtensions
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{
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/// <summary>
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/// Matrix2x3.
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/// </summary>
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public struct Matrix2x3
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{
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public float m00, m01, m02, m10, m11, m12;
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public Matrix2x3(Rect rect, float cos, float sin)
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{
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const float center = 0.5f;
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float dx = -rect.xMin / rect.width - center;
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float dy = -rect.yMin / rect.height - center;
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m00 = cos / rect.width;
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m01 = -sin / rect.height;
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m02 = dx * cos - dy * sin + center;
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m10 = sin / rect.width;
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m11 = cos / rect.height;
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m12 = dx * sin + dy * cos + center;
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}
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public static Vector2 operator*(Matrix2x3 m, Vector2 v)
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{
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return new Vector2(
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(m.m00 * v.x) + (m.m01 * v.y) + m.m02,
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(m.m10 * v.x) + (m.m11 * v.y) + m.m12
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);
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}
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}
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} |