mirror of
https://github.com/vrm-c/UniVRM.git
synced 2026-03-28 13:24:58 -05:00
398 lines
12 KiB
C#
398 lines
12 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using UnityEngine;
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#if UNITY_EDITOR
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using UnityEditor;
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#endif
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namespace UniGLTF
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{
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public struct PosRot
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{
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public Vector3 Position;
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public Quaternion Rotation;
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public static PosRot FromGlobalTransform(Transform t)
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{
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return new PosRot
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{
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Position = t.position,
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Rotation = t.rotation,
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};
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}
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}
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public class BlendShape
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{
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public string Name;
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public BlendShape(string name)
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{
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Name = name;
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}
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public List<Vector3> Positions = new List<Vector3>();
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public List<Vector3> Normals = new List<Vector3>();
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public List<Vector3> Tangents = new List<Vector3>();
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}
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public static class UnityExtensions
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{
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public static Vector4 ReverseZ(this Vector4 v)
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{
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return new Vector4(v.x, v.y, -v.z, v.w);
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}
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public static Vector4 ReverseX(this Vector4 v)
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{
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return new Vector4(-v.x, v.y, v.z, v.w);
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}
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public static Vector3 ReverseZ(this Vector3 v)
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{
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return new Vector3(v.x, v.y, -v.z);
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}
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public static Vector3 ReverseX(this Vector3 v)
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{
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return new Vector3(-v.x, v.y, v.z);
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}
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[Obsolete]
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public static Vector2 ReverseY(this Vector2 v)
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{
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return new Vector2(v.x, -v.y);
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}
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public static Vector2 ReverseUV(this Vector2 v)
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{
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return new Vector2(v.x, 1.0f - v.y);
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}
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public static Quaternion ReverseZ(this Quaternion q)
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{
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float angle;
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Vector3 axis;
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q.ToAngleAxis(out angle, out axis);
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return Quaternion.AngleAxis(-angle, ReverseZ(axis));
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}
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public static Quaternion ReverseX(this Quaternion q)
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{
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float angle;
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Vector3 axis;
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q.ToAngleAxis(out angle, out axis);
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return Quaternion.AngleAxis(-angle, ReverseX(axis));
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}
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public static Matrix4x4 Matrix4x4FromColumns(Vector4 c0, Vector4 c1, Vector4 c2, Vector4 c3)
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{
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#if UNITY_2017_1_OR_NEWER
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return new Matrix4x4(c0, c1, c2, c3);
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#else
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var m = default(Matrix4x4);
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m.SetColumn(0, c0);
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m.SetColumn(1, c1);
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m.SetColumn(2, c2);
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m.SetColumn(3, c3);
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return m;
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#endif
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}
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public static Matrix4x4 Matrix4x4FromRotation(Quaternion q)
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{
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#if UNITY_2017_1_OR_NEWER
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return Matrix4x4.Rotate(q);
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#else
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var m = default(Matrix4x4);
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m.SetTRS(Vector3.zero, q, Vector3.one);
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return m;
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#endif
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}
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public static Matrix4x4 ReverseZ(this Matrix4x4 m)
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{
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m.SetTRS(m.ExtractPosition().ReverseZ(), m.ExtractRotation().ReverseZ(), m.ExtractScale());
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return m;
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}
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public static Matrix4x4 ReverseX(this Matrix4x4 m)
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{
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m.SetTRS(m.ExtractPosition().ReverseX(), m.ExtractRotation().ReverseX(), m.ExtractScale());
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return m;
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}
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public static Matrix4x4 MatrixFromArray(float[] values)
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{
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var m = new Matrix4x4();
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m.m00 = values[0];
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m.m10 = values[1];
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m.m20 = values[2];
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m.m30 = values[3];
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m.m01 = values[4];
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m.m11 = values[5];
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m.m21 = values[6];
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m.m31 = values[7];
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m.m02 = values[8];
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m.m12 = values[9];
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m.m22 = values[10];
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m.m32 = values[11];
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m.m03 = values[12];
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m.m13 = values[13];
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m.m23 = values[14];
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m.m33 = values[15];
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return m;
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}
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// https://forum.unity.com/threads/how-to-assign-matrix4x4-to-transform.121966/
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public static Quaternion ExtractRotation(this 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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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 ExtractPosition(this Matrix4x4 matrix)
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{
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Vector3 position;
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position.x = matrix.m03;
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position.y = matrix.m13;
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position.z = matrix.m23;
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return position;
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}
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public static Vector3 ExtractScale(this Matrix4x4 matrix)
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{
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Vector3 scale;
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scale.x = new Vector4(matrix.m00, matrix.m10, matrix.m20, matrix.m30).magnitude;
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scale.y = new Vector4(matrix.m01, matrix.m11, matrix.m21, matrix.m31).magnitude;
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scale.z = new Vector4(matrix.m02, matrix.m12, matrix.m22, matrix.m32).magnitude;
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return scale;
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}
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public static bool Nearly(in Matrix4x4 lhs, in Matrix4x4 rhs, float epsilon = 1e-3f)
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{
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if (Mathf.Abs(lhs.m00 - rhs.m00) > epsilon) return false;
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if (Mathf.Abs(lhs.m01 - rhs.m01) > epsilon) return false;
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if (Mathf.Abs(lhs.m02 - rhs.m02) > epsilon) return false;
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if (Mathf.Abs(lhs.m03 - rhs.m03) > epsilon) return false;
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if (Mathf.Abs(lhs.m10 - rhs.m10) > epsilon) return false;
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if (Mathf.Abs(lhs.m11 - rhs.m11) > epsilon) return false;
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if (Mathf.Abs(lhs.m12 - rhs.m12) > epsilon) return false;
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if (Mathf.Abs(lhs.m13 - rhs.m13) > epsilon) return false;
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if (Mathf.Abs(lhs.m20 - rhs.m20) > epsilon) return false;
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if (Mathf.Abs(lhs.m21 - rhs.m21) > epsilon) return false;
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if (Mathf.Abs(lhs.m22 - rhs.m22) > epsilon) return false;
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if (Mathf.Abs(lhs.m23 - rhs.m23) > epsilon) return false;
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if (Mathf.Abs(lhs.m30 - rhs.m30) > epsilon) return false;
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if (Mathf.Abs(lhs.m31 - rhs.m31) > epsilon) return false;
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if (Mathf.Abs(lhs.m32 - rhs.m32) > epsilon) return false;
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if (Mathf.Abs(lhs.m33 - rhs.m33) > epsilon) return false;
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return true;
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}
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public static (Vector3 T, Quaternion R, Vector3 S) Extract(this Matrix4x4 m)
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{
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if (m.determinant < 0)
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{
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// ミラーリングを試行する
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// -X
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{
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var mm = m * Matrix4x4.Scale(new Vector3(-1, 1, 1));
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var ss = mm.ExtractScale();
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mm = mm * Matrix4x4.Scale(new Vector3(1 / ss.x, 1 / ss.y, 1 / ss.z));
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var tt = mm.ExtractPosition();
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var rr = mm.ExtractRotation();
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ss.x = -ss.x;
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var mmm = Matrix4x4.TRS(tt, rr, ss);
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if (Nearly(m, mmm))
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{
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return (tt, rr, ss);
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}
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}
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}
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var s = m.ExtractScale();
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var t = m.ExtractPosition();
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var r = m.ExtractRotation();
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return (t, r, s);
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}
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public static string RelativePathFrom(this Transform self, Transform root)
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{
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var path = new List<String>();
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for (var current = self; current != null; current = current.parent)
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{
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if (current == root)
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{
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return String.Join("/", path.ToArray());
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}
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path.Insert(0, current.name);
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}
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throw new Exception("no RelativePath");
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}
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public static Transform GetChildByName(this Transform self, string childName)
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{
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foreach (Transform child in self)
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{
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if (child.name == childName)
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{
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return child;
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}
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}
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throw new KeyNotFoundException();
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}
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public static Transform GetFromPath(this Transform self, string path)
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{
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var current = self;
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var split = path.Split(new[] { '/' }, StringSplitOptions.RemoveEmptyEntries);
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foreach (var childName in split)
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{
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current = current.GetChildByName(childName);
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}
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return current;
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}
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public static IEnumerable<Transform> GetChildren(this Transform self)
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{
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foreach (Transform child in self)
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{
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yield return child;
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}
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}
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public static IEnumerable<Transform> Traverse(this Transform t)
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{
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yield return t;
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foreach (Transform x in t)
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{
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foreach (Transform y in x.Traverse())
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{
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yield return y;
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}
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}
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}
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[Obsolete("Use FindDescendant(name)")]
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public static Transform FindDescenedant(this Transform t, string name)
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{
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return FindDescendant(t, name);
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}
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public static Transform FindDescendant(this Transform t, string name)
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{
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return t.Traverse().First(x => x.name == name);
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}
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public static IEnumerable<Transform> Ancestors(this Transform t)
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{
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yield return t;
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if (t.parent != null)
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{
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foreach (Transform x in t.parent.Ancestors())
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{
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yield return x;
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}
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}
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}
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public static float[] ToArray(this Quaternion q)
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{
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return new float[] { q.x, q.y, q.z, q.w };
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}
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public static float[] ToArray(this Vector3 v)
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{
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return new float[] { v.x, v.y, v.z };
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}
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public static float[] ToArray(this Vector4 v)
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{
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return new float[] { v.x, v.y, v.z, v.w };
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}
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public static void ReverseRecursive(this Transform root, IAxisInverter axisInverter)
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{
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var globalMap = root.Traverse().ToDictionary(x => x, x => PosRot.FromGlobalTransform(x));
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foreach (var x in root.Traverse())
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{
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x.position = axisInverter.InvertVector3(globalMap[x].Position);
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x.rotation = axisInverter.InvertQuaternion(globalMap[x].Rotation);
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}
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}
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public static Mesh GetSharedMesh(this Transform t)
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{
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var meshFilter = t.GetComponent<MeshFilter>();
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if (meshFilter != null)
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{
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return meshFilter.sharedMesh;
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}
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var skinnedMeshRenderer = t.GetComponent<SkinnedMeshRenderer>();
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if (skinnedMeshRenderer != null)
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{
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return skinnedMeshRenderer.sharedMesh;
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}
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return null;
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}
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public static Material[] GetSharedMaterials(this Transform t)
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{
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var renderer = t.GetComponent<Renderer>();
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if (renderer != null)
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{
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return renderer.sharedMaterials;
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}
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return new Material[] { };
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}
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public static bool Has<T>(this Transform transform, T t) where T : Component
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{
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return transform.GetComponent<T>() == t;
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}
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public static T GetOrAddComponent<T>(this GameObject go) where T : Component
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{
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var c = go.GetComponent<T>();
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if (c != null)
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{
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return c;
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}
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return go.AddComponent<T>();
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}
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public static bool EnableForExport(this Component mono)
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{
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if (mono.transform.Ancestors().Any(x => !x.gameObject.activeSelf))
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{
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// 自分か祖先に !activeSelf がいる
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return false;
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}
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return true;
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}
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}
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}
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