Change Details

Issue is that update functions defined in `rna_def_fmodifier_envelope_ctrl` (namely `rna_FModifier_update`) are actually never called. This is because UI code for FCurve modifiers often does not use RNA buttons but uses custom update functions (or non at all). For example, rB9a88bd55903a did this for the generators, envelope control points did not have this at all. This is now changed to use RNA buttons for the envelope control points, this could done for other non-RNA buttons as well to get rid of 'validate_fmodifier_cb()'.

Issue is that update functions defined in `rna_def_fmodifier_envelope_ctrl` (namely `rna_FModifier_update`) are actually never called. This is because UI code for FCurve modifiers often does not use RNA buttons but uses custom update functions (or non at all). For example, rB9a88bd55903a did this for the generators, envelope control points did not have this at all. This is now changed to use RNA buttons for the envelope control points, this could done for other non-RNA buttons as well to get rid of `validate_fmodifier_cb`.

Issue is that update functions defined in `rna_def_fmodifier_envelope_ctrl` (namely `rna_FModifier_update`) are actually never called. This is because UI code for FCurve modifiers often does not use RNA buttons but uses custom update functions (or non at all). For example, rB9a88bd55903a did this for the generators, envelope control points did not have this at all. This is now changed to use RNA buttons for the envelope control points, this could done for other non-RNA buttons as well to get rid of '`validate_fmodifier_cb()'`.