/// <summary>
/// Converts the input matrix to Unity transform matrix.
/// </summary>
public static UnityEngine.Matrix4x4 ToUnityTransform(this Matrix4x4 inputMatrix)
{
var zflip = UnityEngine.Matrix4x4.identity;
zflip.SetColumn(2, -1 * zflip.GetColumn(2));
return(zflip * inputMatrix.ToUnityRaw() * zflip);
}
public static UnityEngine.Matrix4x4?GetUnityMatrix(this Matrix4x4 matrix)
{
if (matrix == Matrix4x4.Zero)
{
return(null);
}
return(matrix.ToUnityRaw());
}
/// <summary>
/// Converts the input projection matrix to a Unity matrix and overrides the near and far clip plane.
/// </summary>
public static UnityEngine.Matrix4x4 ToUnityProjection(this Matrix4x4 inputMatrix, float nearClipPlane, float farClipPlane)
{
// The following code enforces valid near/far clip plane values
float epsilon = 0.01f;
if (nearClipPlane < epsilon)
{
nearClipPlane = epsilon;
}
if (farClipPlane < nearClipPlane + epsilon)
{
farClipPlane = nearClipPlane + epsilon;
}
var unityMatrix = inputMatrix.ToUnityRaw();
unityMatrix.m22 = -(farClipPlane + nearClipPlane) / (farClipPlane - nearClipPlane);
unityMatrix.m23 = -(2.0f * farClipPlane * nearClipPlane) / (farClipPlane - nearClipPlane);
return(unityMatrix);
}