private Matrix44 CorrectCameraTransform(Matrix44 origin)
{
origin.Decompose(out var scale, out Matrix44 rotationMatrix, out var translation);
var newRotation = rotationMatrix.Rotation * CameraPostRotation;
return(Matrix44.CreateRotation(newRotation) * Matrix44.CreateScale(scale) * Matrix44.CreateTranslation(translation));
}
Matrix44 CalcGizmoTransform(Matrix44 modelGlobalTransform, float gizmoRadiusInPixels)
{
var viewport = GetCurrentViewport3D();
var camera = viewport.Camera;
Vector3 scale, translation;
Quaternion rotation;
modelGlobalTransform.Decompose(out scale, out rotation, out translation);
float distance = (camera.Position - translation).Length;
var vfov = camera.FieldOfView / camera.AspectRatio;
float s = gizmoRadiusInPixels * distance * (2 * (float)Math.Tan(vfov / 2) / viewport.Height);
return(Matrix44.CreateRotation(rotation) * Matrix44.CreateScale(s, s, s) * Matrix44.CreateTranslation(translation));
}