Hi Gianluca,
By default the OSG automatically updates the projection matrix when
window is resized, but you can disable this using the Camera method:
enum ProjectionResizePolicy
{
FIXED, /** Keep the projection matrix fixed, despite
window resizes.*/
HORIZONTAL, /** Adjust the HORIZOTNAL field of view on
window resizes.*/
VERTICAL /** Adjust the VERTICAL field of view on window resizes.*/
};
/** Set the policy used to determine if and how the projection
matrix should be adjusted on window resizes. */
inline void setProjectionResizePolicy(ProjectionResizePolicy
policy) { _projectionResizePolicy = policy; }
Robert.
On Wed, Nov 19, 2008 at 11:24 AM, Gianluca Natale
<[EMAIL PROTECTED]> wrote:
> I'm trying to set the projection matrix by the camera,
> just before calling a camera->frame.
> But, as soon as "frame" returns, the projection matrix
> is changed in the left and right clipping planes.
> Since the redraw is called as a consequence of a resize event,
> and the viewport is updated consequently, is there
> a relationship between the projection matrix and the viewport?
>
> In OpenGL there isn't any relationship, I mean that I can
> set the viewport independently of the projection matrix.
> But it seems that OSG doesn't want to distort the
> original scene. If so, is it the default behavior?
> How can I disable such a behavior?
>
> Thanks,
> Gianluca
>
>
>
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>
>
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