private Matrix4x4 HMDMatrix4x4ToMatrix4x4(Valve.VR.HmdMatrix44_t hmdMatrix)
{
Matrix4x4 m = Matrix4x4.identity;
m[0, 0] = hmdMatrix.m0;
m[0, 1] = hmdMatrix.m1;
m[0, 2] = hmdMatrix.m2;
m[0, 3] = hmdMatrix.m3;
m[1, 0] = hmdMatrix.m4;
m[1, 1] = hmdMatrix.m5;
m[1, 2] = hmdMatrix.m6;
m[1, 3] = hmdMatrix.m7;
m[2, 0] = hmdMatrix.m8;
m[2, 1] = hmdMatrix.m9;
m[2, 2] = hmdMatrix.m10;
m[2, 3] = hmdMatrix.m11;
m[3, 0] = hmdMatrix.m12;
m[3, 1] = hmdMatrix.m13;
m[3, 2] = hmdMatrix.m14;
m[3, 3] = hmdMatrix.m15;
return(m);
}
/// <summary>
/// Converts the HDM matrix to a 4x4 matrix (Credit to Railboy)
/// </summary>
/// <param name="input"></param>
/// <returns></returns>
protected Matrix4x4 HMDMatrix4x4ToMatrix4x4(Valve.VR.HmdMatrix44_t input)
{
var m = Matrix4x4.identity;
m[0, 0] = input.m0;
m[0, 1] = input.m1;
m[0, 2] = input.m2;
m[0, 3] = input.m3;
m[1, 0] = input.m4;
m[1, 1] = input.m5;
m[1, 2] = input.m6;
m[1, 3] = input.m7;
m[2, 0] = input.m8;
m[2, 1] = input.m9;
m[2, 2] = input.m10;
m[2, 3] = input.m11;
m[3, 0] = input.m12;
m[3, 1] = input.m13;
m[3, 2] = input.m14;
m[3, 3] = input.m15;
return(m);
}
// プロジェクションのスケールを取得する
static Vector2 GetProjectionScale(SteamVR_TrackedCamera.VideoStreamTexture source)
{
Valve.VR.CVRTrackedCamera trackedCamera = Valve.VR.OpenVR.TrackedCamera;
if (trackedCamera == null)
{
return(Vector2.one);
}
// スケール値を取得するだけなので、Near/Farの値は何でも構わない
const float Near = 1.0f;
const float Far = 100.0f;
Valve.VR.HmdMatrix44_t ProjectionMatrix = new Valve.VR.HmdMatrix44_t();
if (trackedCamera.GetCameraProjection(source.deviceIndex, 0, source.frameType, Near, Far, ref ProjectionMatrix) !=
Valve.VR.EVRTrackedCameraError.None)
{
return(Vector2.one);
}
return(new Vector2(ProjectionMatrix.m0, ProjectionMatrix.m5));
}
static Matrix4x4 GetSteamVRProjectionMatrix(Camera cam, Valve.VR.EVREye eye)
{
Valve.VR.HmdMatrix44_t proj = SteamVR.instance.hmd.GetProjectionMatrix(eye, cam.nearClipPlane, cam.farClipPlane, SteamVR.instance.graphicsAPI);
Matrix4x4 m = new Matrix4x4();
m.m00 = proj.m0;
m.m01 = proj.m1;
m.m02 = proj.m2;
m.m03 = proj.m3;
m.m10 = proj.m4;
m.m11 = proj.m5;
m.m12 = proj.m6;
m.m13 = proj.m7;
m.m20 = proj.m8;
m.m21 = proj.m9;
m.m22 = proj.m10;
m.m23 = proj.m11;
m.m30 = proj.m12;
m.m31 = proj.m13;
m.m32 = proj.m14;
m.m33 = proj.m15;
return(m);
}
