diff options
| -rw-r--r-- | source/blender/editors/space_graph/graph_buttons.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/source/blender/editors/space_graph/graph_buttons.c b/source/blender/editors/space_graph/graph_buttons.c index 671a4c3afd3..437e3bef0d4 100644 --- a/source/blender/editors/space_graph/graph_buttons.c +++ b/source/blender/editors/space_graph/graph_buttons.c @@ -671,6 +671,21 @@ static void graph_panel_drivers(const bContext *C, Panel *pa) /* errors? */ if (driver->flag & DRIVER_FLAG_INVALID) uiItemL(col, IFACE_("ERROR: Invalid target channel(s)"), ICON_ERROR); + + /* Warnings about a lack of variables + * NOTE: The lack of variables is generally a bad thing, since it indicates + * that the driver doesn't work at all. This particular scenario arises + * primarily when users mistakenly try to use drivers for procedural + * property animation + */ + if (BLI_listbase_is_empty(&driver->variables)) { + uiItemL(col, IFACE_("ERROR: Driver is useless without any inputs"), ICON_ERROR); + + if (!BLI_listbase_is_empty(&fcu->modifiers)) { + uiItemL(col, IFACE_("TIP: Use F-Curves for procedural animation instead"), ICON_INFO); + uiItemL(col, IFACE_("F-Modifiers can generate curves for those too"), ICON_INFO); + } + } } col = uiLayoutColumn(pa->layout, TRUE); |