public TransformGizmo()
{
MetaOperator sceneTransformGizmoDefinition = MetaManager.Instance.GetMetaOperator(Guid.Parse("2e56b389-a983-42fe-a015-61d9f9532af4"));
_sceneTransformGizmoOperator = sceneTransformGizmoDefinition.CreateOperator(Guid.Empty);
GizmoParts = new GizmoPart[]
{
new AxisGizmoPart(0, Vector3.Zero, Vector3.UnitX, new[] { _translateXParam, _translateYParam, _translateZParam }),
new AxisGizmoPart(1, Vector3.Zero, Vector3.UnitY, new[] { _translateXParam, _translateYParam, _translateZParam }),
new AxisGizmoPart(2, Vector3.Zero, Vector3.UnitZ, new[] { _translateXParam, _translateYParam, _translateZParam }),
new PlaneGizmoPart(3, Vector3.Zero, new Vector3(1, 1, 0), new[] { _translateXParam, _translateYParam, _translateZParam }),
new PlaneGizmoPart(4, Vector3.Zero, new Vector3(1, 0, 1), new[] { _translateXParam, _translateYParam, _translateZParam }),
new PlaneGizmoPart(5, Vector3.Zero, new Vector3(0, 1, 1), new[] { _translateXParam, _translateYParam, _translateZParam }),
};
}
private GizmoPart FindGizmoPartHitByRay(Ray rayInWorld)
{
if (_transformGizmoTargetOp == null)
{
return(null);
}
_rayInObject = ComputeRayInObject(rayInWorld, GizmoToWorld);
var minDistance = (float)Double.PositiveInfinity;
GizmoPart nearestPartHitByRay = null;
foreach (GizmoPart gizmoPart in GizmoParts)
{
float hitDistance;
bool wasHit = gizmoPart.HitTestWithRayInObject(_rayInObject, out hitDistance);
if (wasHit && hitDistance < minDistance)
{
nearestPartHitByRay = gizmoPart;
minDistance = hitDistance;
}
}
return(nearestPartHitByRay);
}
