fix(utils/data_augmentation): correct dangling tgt_fov_max typo in sample_perspective

The absolute-range clamp in sample_perspective was written as:

    tgt_fov_x_min, tgt_fov_max = max(...), min(..., tgt_fov_x_max)

which shadowed the wrong name: tgt_fov_x_max was never overwritten, so the
subsequent rng.uniform(..., tgt_fov_x_max) call silently bypassed the
absolute maximum clamp and tgt_fov_max became a dangling local. Rename the
target to tgt_fov_x_max so the absolute bound is actually applied when
drawing tgt_fov_x.

Closes #146.

Author: SAY-5

moge/utils/data_augmentation.py

@@ -34,7 +34,7 @@ def sample_perspective(
     fov_range_relative_min, fov_range_relative_max = fov_range_relative
     tgt_fov_x_min = min(fov_range_relative_min * raw_fov_x, utils3d.focal_to_fov(utils3d.fov_to_focal(fov_range_relative_min * raw_fov_y) / tgt_aspect))
     tgt_fov_x_max = min(fov_range_relative_max * raw_fov_x, utils3d.focal_to_fov(utils3d.fov_to_focal(fov_range_relative_max * raw_fov_y) / tgt_aspect))
-    tgt_fov_x_min, tgt_fov_max = max(np.deg2rad(fov_range_absolute_min), tgt_fov_x_min), min(np.deg2rad(fov_range_absolute_max), tgt_fov_x_max)
+    tgt_fov_x_min, tgt_fov_x_max = max(np.deg2rad(fov_range_absolute_min), tgt_fov_x_min), min(np.deg2rad(fov_range_absolute_max), tgt_fov_x_max)
     tgt_fov_x = rng.uniform(min(tgt_fov_x_min, tgt_fov_x_max), tgt_fov_x_max)
     tgt_fov_y = utils3d.focal_to_fov(utils3d.np.fov_to_focal(tgt_fov_x) * tgt_aspect)