Yes, that pretty much captures the thinking behind it.
My thought is that there is no real reason that subdivisions need to be
immutable, although I wouldn't want to change it at this late date for
FX 8 unless it is needed for FXML support.
The fixedEyeAtCameraZero mode is not something I think should be
mutable, since the camera behaves fairly differently in each mode.
Having said that, there is no reason it couldn't be made mutable in a
subsequent release if there was a good reason to do so.
-- Kevin
Chien Yang wrote:
We did discuss making divisions in the predefined 3D shapes mutable in
earlier meeting. However we decided against it since it is a heavy
weight operation as the supporting mesh will has to be regenerated. I
believe the constructor with the divisions argument will not have much
use in the future when we move away from mesh implementation of our
predefined 3D shapes.
The fixedEyeAtCameraZero flag in PerspectiveCamera is a setup flag to
the camera and once set it shouldn't be changed. The perspective
projection matrix is constructed differently depending on the flag. In
the default mode, JavaFX controls the eye to achieve a projection
plane at Z=0 so that simple adding of 3D shapes into a 2D scene looks
intuitive. The other mode, where eye is fixed a camera zero, is well
suitable for movable camera in the 3d space.
- Chien
On 10/4/2013 9:28 AM, Richard Bair wrote:
Why are they not? It isn't immediately obvious to me why these are
not mutable? I was reading
https://javafx-jira.kenai.com/browse/RT-29577 and this struck me as odd.
Richard
