fovx and fovy are not relevant anymore. Intrinsics are read from
projection_matrix. Thus, we don't pass them to the rendering code.
Signed-off-by: Matthieu Gendrin <matthieu.gendrin@orange.com>
full_projection_transform is the multiplication of view_matrix and
projection_matrix. Thus, passing (view_matrix, projection_matrix) is
equivalent to (view_matrix, full_projection_transform).
Passing projection_matrix as arguments to rasterize_gaussians enables
to get intrinsics informations in the rendering code. Since we'll need
central point (cx, cy), this is the aim of this refacto commit.
Signed-off-by: Matthieu Gendrin <matthieu.gendrin@orange.com>
In some cases, calibration gives central point cx,cy != (0.5,0.5), or it
can be decided to crop the input images.
In those cases, it is necessary to split fovx to fovXleft,fovXright and fovy to fovYtop,fovYbottom
Note that the export of cameras to cameras.json merges those values back
to the basic fovx,fovy. This aims at avoiding the modification of
diff_gaussian_rasterization branch used for SIBR_gaussianViewer_app.
Signed-off-by: Matthieu Gendrin <matthieu.gendrin@orange.com>
