93 lines
3.2 KiB
C#
93 lines
3.2 KiB
C#
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using UnityEngine;
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namespace AwesomeTechnologies.Utility
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{
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public class MatrixTools
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{
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public static Vector3 ExtractTranslationFromMatrix(Matrix4x4 matrix)
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{
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Vector3 translate;
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translate.x = matrix.m03;
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translate.y = matrix.m13;
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translate.z = matrix.m23;
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return translate;
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}
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public static Quaternion ExtractRotationFromMatrix(Matrix4x4 matrix)
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{
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Vector3 forward;
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forward.x = matrix.m02;
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forward.y = matrix.m12;
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forward.z = matrix.m22;
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if (forward == Vector3.zero) return Quaternion.identity;
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Vector3 upwards;
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upwards.x = matrix.m01;
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upwards.y = matrix.m11;
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upwards.z = matrix.m21;
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return Quaternion.LookRotation(forward, upwards);
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}
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public static Vector3 ExtractScaleFromMatrix(Matrix4x4 matrix)
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{
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return new Vector3(matrix.GetColumn(0).magnitude, matrix.GetColumn(1).magnitude, matrix.GetColumn(2).magnitude);
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}
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public static Matrix4x4 ScaleMatrix4X4(Matrix4x4 lhs, ref Matrix4x4 rhs)
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{
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return new Matrix4x4
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{
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m00 = lhs.m00 * rhs.m00,
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m01 = lhs.m01 * rhs.m11,
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m02 = lhs.m02 * rhs.m22,
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m03 = lhs.m03 * rhs.m33,
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m10 = lhs.m10 * rhs.m00,
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m11 = lhs.m11 * rhs.m11,
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m12 = lhs.m12 * rhs.m22,
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m13 = lhs.m13 * rhs.m33,
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m20 = lhs.m20 * rhs.m00,
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m21 = lhs.m21 * rhs.m11,
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m22 = lhs.m22 * rhs.m22,
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m23 = lhs.m23 * rhs.m33,
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m30 = lhs.m30 * rhs.m00,
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m31 = lhs.m31 * rhs.m11,
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m32 = lhs.m32 * rhs.m22,
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m33 = lhs.m33 * rhs.m33
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};
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}
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public static Matrix4x4 TranslateMatrix4X4(Matrix4x4 lhs, Matrix4x4 rhs)
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{
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return new Matrix4x4
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{
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m00 = lhs.m00,
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m01 = lhs.m01,
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m02 = lhs.m02,
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m03 = lhs.m00 * rhs.m03 + lhs.m01 * rhs.m13 + lhs.m02 * rhs.m23 + lhs.m03,
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m10 = lhs.m10,
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m11 = lhs.m11,
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m12 = lhs.m12,
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m13 = lhs.m10 * rhs.m03 + lhs.m11 * rhs.m13 + lhs.m12 * rhs.m23 + lhs.m13,
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m20 = lhs.m20,
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m21 = lhs.m21,
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m22 = lhs.m22,
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m23 = lhs.m20 * rhs.m03 + lhs.m21 * rhs.m13 + lhs.m22 * rhs.m23 + lhs.m23,
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m30 = lhs.m30,
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m31 = lhs.m31,
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m32 = lhs.m32,
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m33 = lhs.m30 * rhs.m03 + lhs.m31 * rhs.m13 + lhs.m32 * rhs.m23 + lhs.m33
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};
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}
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public static void FastTranslateMatrix4X4(ref Matrix4x4 lhs, ref Matrix4x4 rhs)
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{
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lhs.m03 = lhs.m00 * rhs.m03 + lhs.m01 * rhs.m13 + lhs.m02 * rhs.m23 + lhs.m03;
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lhs.m13 = lhs.m10 * rhs.m03 + lhs.m11 * rhs.m13 + lhs.m12 * rhs.m23 + lhs.m13;
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lhs.m23 = lhs.m20 * rhs.m03 + lhs.m21 * rhs.m13 + lhs.m22 * rhs.m23 + lhs.m23;
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lhs.m33 = lhs.m30 * rhs.m03 + lhs.m31 * rhs.m13 + lhs.m32 * rhs.m23 + lhs.m33;
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}
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}
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}
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