573 lines
16 KiB
C#
573 lines
16 KiB
C#
using System;
|
|
using System.Runtime.InteropServices;
|
|
#if REAL_T_IS_DOUBLE
|
|
using real_t = System.Double;
|
|
#else
|
|
using real_t = System.Single;
|
|
#endif
|
|
|
|
namespace Godot
|
|
{
|
|
[StructLayout(LayoutKind.Sequential)]
|
|
public struct Basis : IEquatable<Basis>
|
|
{
|
|
private static readonly Basis identity = new Basis
|
|
(
|
|
new Vector3(1f, 0f, 0f),
|
|
new Vector3(0f, 1f, 0f),
|
|
new Vector3(0f, 0f, 1f)
|
|
);
|
|
|
|
private static readonly Basis[] orthoBases = {
|
|
new Basis(1f, 0f, 0f, 0f, 1f, 0f, 0f, 0f, 1f),
|
|
new Basis(0f, -1f, 0f, 1f, 0f, 0f, 0f, 0f, 1f),
|
|
new Basis(-1f, 0f, 0f, 0f, -1f, 0f, 0f, 0f, 1f),
|
|
new Basis(0f, 1f, 0f, -1f, 0f, 0f, 0f, 0f, 1f),
|
|
new Basis(1f, 0f, 0f, 0f, 0f, -1f, 0f, 1f, 0f),
|
|
new Basis(0f, 0f, 1f, 1f, 0f, 0f, 0f, 1f, 0f),
|
|
new Basis(-1f, 0f, 0f, 0f, 0f, 1f, 0f, 1f, 0f),
|
|
new Basis(0f, 0f, -1f, -1f, 0f, 0f, 0f, 1f, 0f),
|
|
new Basis(1f, 0f, 0f, 0f, -1f, 0f, 0f, 0f, -1f),
|
|
new Basis(0f, 1f, 0f, 1f, 0f, 0f, 0f, 0f, -1f),
|
|
new Basis(-1f, 0f, 0f, 0f, 1f, 0f, 0f, 0f, -1f),
|
|
new Basis(0f, -1f, 0f, -1f, 0f, 0f, 0f, 0f, -1f),
|
|
new Basis(1f, 0f, 0f, 0f, 0f, 1f, 0f, -1f, 0f),
|
|
new Basis(0f, 0f, -1f, 1f, 0f, 0f, 0f, -1f, 0f),
|
|
new Basis(-1f, 0f, 0f, 0f, 0f, -1f, 0f, -1f, 0f),
|
|
new Basis(0f, 0f, 1f, -1f, 0f, 0f, 0f, -1f, 0f),
|
|
new Basis(0f, 0f, 1f, 0f, 1f, 0f, -1f, 0f, 0f),
|
|
new Basis(0f, -1f, 0f, 0f, 0f, 1f, -1f, 0f, 0f),
|
|
new Basis(0f, 0f, -1f, 0f, -1f, 0f, -1f, 0f, 0f),
|
|
new Basis(0f, 1f, 0f, 0f, 0f, -1f, -1f, 0f, 0f),
|
|
new Basis(0f, 0f, 1f, 0f, -1f, 0f, 1f, 0f, 0f),
|
|
new Basis(0f, 1f, 0f, 0f, 0f, 1f, 1f, 0f, 0f),
|
|
new Basis(0f, 0f, -1f, 0f, 1f, 0f, 1f, 0f, 0f),
|
|
new Basis(0f, -1f, 0f, 0f, 0f, -1f, 1f, 0f, 0f)
|
|
};
|
|
|
|
public Vector3 x
|
|
{
|
|
get { return GetAxis(0); }
|
|
set { SetAxis(0, value); }
|
|
}
|
|
|
|
public Vector3 y
|
|
{
|
|
get { return GetAxis(1); }
|
|
set { SetAxis(1, value); }
|
|
}
|
|
|
|
public Vector3 z
|
|
{
|
|
get { return GetAxis(2); }
|
|
set { SetAxis(2, value); }
|
|
}
|
|
|
|
private Vector3 _x;
|
|
private Vector3 _y;
|
|
private Vector3 _z;
|
|
|
|
public static Basis Identity
|
|
{
|
|
get { return identity; }
|
|
}
|
|
|
|
public Vector3 Scale
|
|
{
|
|
get
|
|
{
|
|
return new Vector3
|
|
(
|
|
new Vector3(this[0, 0], this[1, 0], this[2, 0]).Length(),
|
|
new Vector3(this[0, 1], this[1, 1], this[2, 1]).Length(),
|
|
new Vector3(this[0, 2], this[1, 2], this[2, 2]).Length()
|
|
);
|
|
}
|
|
}
|
|
|
|
public Vector3 this[int index]
|
|
{
|
|
get
|
|
{
|
|
switch (index)
|
|
{
|
|
case 0:
|
|
return _x;
|
|
case 1:
|
|
return _y;
|
|
case 2:
|
|
return _z;
|
|
default:
|
|
throw new IndexOutOfRangeException();
|
|
}
|
|
}
|
|
set
|
|
{
|
|
switch (index)
|
|
{
|
|
case 0:
|
|
_x = value;
|
|
return;
|
|
case 1:
|
|
_y = value;
|
|
return;
|
|
case 2:
|
|
_z = value;
|
|
return;
|
|
default:
|
|
throw new IndexOutOfRangeException();
|
|
}
|
|
}
|
|
}
|
|
|
|
public real_t this[int index, int axis]
|
|
{
|
|
get
|
|
{
|
|
switch (index)
|
|
{
|
|
case 0:
|
|
return _x[axis];
|
|
case 1:
|
|
return _y[axis];
|
|
case 2:
|
|
return _z[axis];
|
|
default:
|
|
throw new IndexOutOfRangeException();
|
|
}
|
|
}
|
|
set
|
|
{
|
|
switch (index)
|
|
{
|
|
case 0:
|
|
_x[axis] = value;
|
|
return;
|
|
case 1:
|
|
_y[axis] = value;
|
|
return;
|
|
case 2:
|
|
_z[axis] = value;
|
|
return;
|
|
default:
|
|
throw new IndexOutOfRangeException();
|
|
}
|
|
}
|
|
}
|
|
|
|
internal static Basis CreateFromAxes(Vector3 xAxis, Vector3 yAxis, Vector3 zAxis)
|
|
{
|
|
return new Basis
|
|
(
|
|
new Vector3(xAxis.x, yAxis.x, zAxis.x),
|
|
new Vector3(xAxis.y, yAxis.y, zAxis.y),
|
|
new Vector3(xAxis.z, yAxis.z, zAxis.z)
|
|
);
|
|
}
|
|
|
|
public real_t Determinant()
|
|
{
|
|
return this[0, 0] * (this[1, 1] * this[2, 2] - this[2, 1] * this[1, 2]) -
|
|
this[1, 0] * (this[0, 1] * this[2, 2] - this[2, 1] * this[0, 2]) +
|
|
this[2, 0] * (this[0, 1] * this[1, 2] - this[1, 1] * this[0, 2]);
|
|
}
|
|
|
|
public Vector3 GetAxis(int axis)
|
|
{
|
|
return new Vector3(this[0, axis], this[1, axis], this[2, axis]);
|
|
}
|
|
|
|
public void SetAxis(int axis, Vector3 value)
|
|
{
|
|
this[0, axis] = value.x;
|
|
this[1, axis] = value.y;
|
|
this[2, axis] = value.z;
|
|
}
|
|
|
|
public Vector3 GetEuler()
|
|
{
|
|
Basis m = Orthonormalized();
|
|
|
|
Vector3 euler;
|
|
euler.z = 0.0f;
|
|
|
|
real_t mxy = m[1, 2];
|
|
|
|
|
|
if (mxy < 1.0f)
|
|
{
|
|
if (mxy > -1.0f)
|
|
{
|
|
euler.x = Mathf.Asin(-mxy);
|
|
euler.y = Mathf.Atan2(m[0, 2], m[2, 2]);
|
|
euler.z = Mathf.Atan2(m[1, 0], m[1, 1]);
|
|
}
|
|
else
|
|
{
|
|
euler.x = Mathf.Pi * 0.5f;
|
|
euler.y = -Mathf.Atan2(-m[0, 1], m[0, 0]);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
euler.x = -Mathf.Pi * 0.5f;
|
|
euler.y = -Mathf.Atan2(-m[0, 1], m[0, 0]);
|
|
}
|
|
|
|
return euler;
|
|
}
|
|
|
|
public int GetOrthogonalIndex()
|
|
{
|
|
var orth = this;
|
|
|
|
for (int i = 0; i < 3; i++)
|
|
{
|
|
for (int j = 0; j < 3; j++)
|
|
{
|
|
real_t v = orth[i, j];
|
|
|
|
if (v > 0.5f)
|
|
v = 1.0f;
|
|
else if (v < -0.5f)
|
|
v = -1.0f;
|
|
else
|
|
v = 0f;
|
|
|
|
orth[i, j] = v;
|
|
}
|
|
}
|
|
|
|
for (int i = 0; i < 24; i++)
|
|
{
|
|
if (orthoBases[i] == orth)
|
|
return i;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
public Basis Inverse()
|
|
{
|
|
var inv = this;
|
|
|
|
real_t[] co = {
|
|
inv[1, 1] * inv[2, 2] - inv[1, 2] * inv[2, 1],
|
|
inv[1, 2] * inv[2, 0] - inv[1, 0] * inv[2, 2],
|
|
inv[1, 0] * inv[2, 1] - inv[1, 1] * inv[2, 0]
|
|
};
|
|
|
|
real_t det = inv[0, 0] * co[0] + inv[0, 1] * co[1] + inv[0, 2] * co[2];
|
|
|
|
if (det == 0)
|
|
{
|
|
return new Basis
|
|
(
|
|
real_t.NaN, real_t.NaN, real_t.NaN,
|
|
real_t.NaN, real_t.NaN, real_t.NaN,
|
|
real_t.NaN, real_t.NaN, real_t.NaN
|
|
);
|
|
}
|
|
|
|
real_t s = 1.0f / det;
|
|
|
|
inv = new Basis
|
|
(
|
|
co[0] * s,
|
|
inv[0, 2] * inv[2, 1] - inv[0, 1] * inv[2, 2] * s,
|
|
inv[0, 1] * inv[1, 2] - inv[0, 2] * inv[1, 1] * s,
|
|
co[1] * s,
|
|
inv[0, 0] * inv[2, 2] - inv[0, 2] * inv[2, 0] * s,
|
|
inv[0, 2] * inv[1, 0] - inv[0, 0] * inv[1, 2] * s,
|
|
co[2] * s,
|
|
inv[0, 1] * inv[2, 0] - inv[0, 0] * inv[2, 1] * s,
|
|
inv[0, 0] * inv[1, 1] - inv[0, 1] * inv[1, 0] * s
|
|
);
|
|
|
|
return inv;
|
|
}
|
|
|
|
public Basis Orthonormalized()
|
|
{
|
|
Vector3 xAxis = GetAxis(0);
|
|
Vector3 yAxis = GetAxis(1);
|
|
Vector3 zAxis = GetAxis(2);
|
|
|
|
xAxis.Normalize();
|
|
yAxis = yAxis - xAxis * xAxis.Dot(yAxis);
|
|
yAxis.Normalize();
|
|
zAxis = zAxis - xAxis * xAxis.Dot(zAxis) - yAxis * yAxis.Dot(zAxis);
|
|
zAxis.Normalize();
|
|
|
|
return CreateFromAxes(xAxis, yAxis, zAxis);
|
|
}
|
|
|
|
public Basis Rotated(Vector3 axis, real_t phi)
|
|
{
|
|
return new Basis(axis, phi) * this;
|
|
}
|
|
|
|
public Basis Scaled(Vector3 scale)
|
|
{
|
|
var m = this;
|
|
|
|
m[0, 0] *= scale.x;
|
|
m[0, 1] *= scale.x;
|
|
m[0, 2] *= scale.x;
|
|
m[1, 0] *= scale.y;
|
|
m[1, 1] *= scale.y;
|
|
m[1, 2] *= scale.y;
|
|
m[2, 0] *= scale.z;
|
|
m[2, 1] *= scale.z;
|
|
m[2, 2] *= scale.z;
|
|
|
|
return m;
|
|
}
|
|
|
|
public real_t Tdotx(Vector3 with)
|
|
{
|
|
return this[0, 0] * with[0] + this[1, 0] * with[1] + this[2, 0] * with[2];
|
|
}
|
|
|
|
public real_t Tdoty(Vector3 with)
|
|
{
|
|
return this[0, 1] * with[0] + this[1, 1] * with[1] + this[2, 1] * with[2];
|
|
}
|
|
|
|
public real_t Tdotz(Vector3 with)
|
|
{
|
|
return this[0, 2] * with[0] + this[1, 2] * with[1] + this[2, 2] * with[2];
|
|
}
|
|
|
|
public Basis Transposed()
|
|
{
|
|
var tr = this;
|
|
|
|
real_t temp = this[0, 1];
|
|
this[0, 1] = this[1, 0];
|
|
this[1, 0] = temp;
|
|
|
|
temp = this[0, 2];
|
|
this[0, 2] = this[2, 0];
|
|
this[2, 0] = temp;
|
|
|
|
temp = this[1, 2];
|
|
this[1, 2] = this[2, 1];
|
|
this[2, 1] = temp;
|
|
|
|
return tr;
|
|
}
|
|
|
|
public Vector3 Xform(Vector3 v)
|
|
{
|
|
return new Vector3
|
|
(
|
|
this[0].Dot(v),
|
|
this[1].Dot(v),
|
|
this[2].Dot(v)
|
|
);
|
|
}
|
|
|
|
public Vector3 XformInv(Vector3 v)
|
|
{
|
|
return new Vector3
|
|
(
|
|
this[0, 0] * v.x + this[1, 0] * v.y + this[2, 0] * v.z,
|
|
this[0, 1] * v.x + this[1, 1] * v.y + this[2, 1] * v.z,
|
|
this[0, 2] * v.x + this[1, 2] * v.y + this[2, 2] * v.z
|
|
);
|
|
}
|
|
|
|
public Quat Quat() {
|
|
real_t trace = _x[0] + _y[1] + _z[2];
|
|
|
|
if (trace > 0.0f) {
|
|
real_t s = Mathf.Sqrt(trace + 1.0f) * 2f;
|
|
real_t inv_s = 1f / s;
|
|
return new Quat(
|
|
(_z[1] - _y[2]) * inv_s,
|
|
(_x[2] - _z[0]) * inv_s,
|
|
(_y[0] - _x[1]) * inv_s,
|
|
s * 0.25f
|
|
);
|
|
}
|
|
|
|
if (_x[0] > _y[1] && _x[0] > _z[2]) {
|
|
real_t s = Mathf.Sqrt(_x[0] - _y[1] - _z[2] + 1.0f) * 2f;
|
|
real_t inv_s = 1f / s;
|
|
return new Quat(
|
|
s * 0.25f,
|
|
(_x[1] + _y[0]) * inv_s,
|
|
(_x[2] + _z[0]) * inv_s,
|
|
(_z[1] - _y[2]) * inv_s
|
|
);
|
|
}
|
|
|
|
if (_y[1] > _z[2]) {
|
|
real_t s = Mathf.Sqrt(-_x[0] + _y[1] - _z[2] + 1.0f) * 2f;
|
|
real_t inv_s = 1f / s;
|
|
return new Quat(
|
|
(_x[1] + _y[0]) * inv_s,
|
|
s * 0.25f,
|
|
(_y[2] + _z[1]) * inv_s,
|
|
(_x[2] - _z[0]) * inv_s
|
|
);
|
|
} else {
|
|
real_t s = Mathf.Sqrt(-_x[0] - _y[1] + _z[2] + 1.0f) * 2f;
|
|
real_t inv_s = 1f / s;
|
|
return new Quat(
|
|
(_x[2] + _z[0]) * inv_s,
|
|
(_y[2] + _z[1]) * inv_s,
|
|
s * 0.25f,
|
|
(_y[0] - _x[1]) * inv_s
|
|
);
|
|
}
|
|
}
|
|
|
|
public Basis(Quat quat)
|
|
{
|
|
real_t s = 2.0f / quat.LengthSquared();
|
|
|
|
real_t xs = quat.x * s;
|
|
real_t ys = quat.y * s;
|
|
real_t zs = quat.z * s;
|
|
real_t wx = quat.w * xs;
|
|
real_t wy = quat.w * ys;
|
|
real_t wz = quat.w * zs;
|
|
real_t xx = quat.x * xs;
|
|
real_t xy = quat.x * ys;
|
|
real_t xz = quat.x * zs;
|
|
real_t yy = quat.y * ys;
|
|
real_t yz = quat.y * zs;
|
|
real_t zz = quat.z * zs;
|
|
|
|
_x = new Vector3(1.0f - (yy + zz), xy - wz, xz + wy);
|
|
_y = new Vector3(xy + wz, 1.0f - (xx + zz), yz - wx);
|
|
_z = new Vector3(xz - wy, yz + wx, 1.0f - (xx + yy));
|
|
}
|
|
|
|
public Basis(Vector3 euler)
|
|
{
|
|
real_t c;
|
|
real_t s;
|
|
|
|
c = Mathf.Cos(euler.x);
|
|
s = Mathf.Sin(euler.x);
|
|
var xmat = new Basis(1, 0, 0, 0, c, -s, 0, s, c);
|
|
|
|
c = Mathf.Cos(euler.y);
|
|
s = Mathf.Sin(euler.y);
|
|
var ymat = new Basis(c, 0, s, 0, 1, 0, -s, 0, c);
|
|
|
|
c = Mathf.Cos(euler.z);
|
|
s = Mathf.Sin(euler.z);
|
|
var zmat = new Basis(c, -s, 0, s, c, 0, 0, 0, 1);
|
|
|
|
this = ymat * xmat * zmat;
|
|
}
|
|
|
|
public Basis(Vector3 axis, real_t phi)
|
|
{
|
|
var axis_sq = new Vector3(axis.x * axis.x, axis.y * axis.y, axis.z * axis.z);
|
|
|
|
real_t cosine = Mathf.Cos( phi);
|
|
real_t sine = Mathf.Sin( phi);
|
|
|
|
_x = new Vector3
|
|
(
|
|
axis_sq.x + cosine * (1.0f - axis_sq.x),
|
|
axis.x * axis.y * (1.0f - cosine) - axis.z * sine,
|
|
axis.z * axis.x * (1.0f - cosine) + axis.y * sine
|
|
);
|
|
|
|
_y = new Vector3
|
|
(
|
|
axis.x * axis.y * (1.0f - cosine) + axis.z * sine,
|
|
axis_sq.y + cosine * (1.0f - axis_sq.y),
|
|
axis.y * axis.z * (1.0f - cosine) - axis.x * sine
|
|
);
|
|
|
|
_z = new Vector3
|
|
(
|
|
axis.z * axis.x * (1.0f - cosine) - axis.y * sine,
|
|
axis.y * axis.z * (1.0f - cosine) + axis.x * sine,
|
|
axis_sq.z + cosine * (1.0f - axis_sq.z)
|
|
);
|
|
}
|
|
|
|
public Basis(Vector3 xAxis, Vector3 yAxis, Vector3 zAxis)
|
|
{
|
|
_x = xAxis;
|
|
_y = yAxis;
|
|
_z = zAxis;
|
|
}
|
|
|
|
public Basis(real_t xx, real_t xy, real_t xz, real_t yx, real_t yy, real_t yz, real_t zx, real_t zy, real_t zz)
|
|
{
|
|
_x = new Vector3(xx, xy, xz);
|
|
_y = new Vector3(yx, yy, yz);
|
|
_z = new Vector3(zx, zy, zz);
|
|
}
|
|
|
|
public static Basis operator *(Basis left, Basis right)
|
|
{
|
|
return new Basis
|
|
(
|
|
right.Tdotx(left[0]), right.Tdoty(left[0]), right.Tdotz(left[0]),
|
|
right.Tdotx(left[1]), right.Tdoty(left[1]), right.Tdotz(left[1]),
|
|
right.Tdotx(left[2]), right.Tdoty(left[2]), right.Tdotz(left[2])
|
|
);
|
|
}
|
|
|
|
public static bool operator ==(Basis left, Basis right)
|
|
{
|
|
return left.Equals(right);
|
|
}
|
|
|
|
public static bool operator !=(Basis left, Basis right)
|
|
{
|
|
return !left.Equals(right);
|
|
}
|
|
|
|
public override bool Equals(object obj)
|
|
{
|
|
if (obj is Basis)
|
|
{
|
|
return Equals((Basis)obj);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
public bool Equals(Basis other)
|
|
{
|
|
return _x.Equals(other[0]) && _y.Equals(other[1]) && _z.Equals(other[2]);
|
|
}
|
|
|
|
public override int GetHashCode()
|
|
{
|
|
return _x.GetHashCode() ^ _y.GetHashCode() ^ _z.GetHashCode();
|
|
}
|
|
|
|
public override string ToString()
|
|
{
|
|
return String.Format("({0}, {1}, {2})", new object[]
|
|
{
|
|
_x.ToString(),
|
|
_y.ToString(),
|
|
_z.ToString()
|
|
});
|
|
}
|
|
|
|
public string ToString(string format)
|
|
{
|
|
return String.Format("({0}, {1}, {2})", new object[]
|
|
{
|
|
_x.ToString(format),
|
|
_y.ToString(format),
|
|
_z.ToString(format)
|
|
});
|
|
}
|
|
}
|
|
}
|