Merge pull request #7114 from dotCooCoo/feat/group-effect-after-members

Effects: a group's geometry effects reshape what its members draw

docs/target-app-parity.md

@@ -607,6 +607,7 @@ since 2026-10-01.
 - **Transform effect options (#885):** Effect › Distort & Transform › Transform… has visible Transform Objects, Transform Patterns and Scale Strokes & Effects checkboxes (`distort.transform` params `objects`, `patterns`, `strokes`; files without them draw as before). With Transform Objects off the geometry stays and makes no copies; Scale Strokes & Effects scales stroke weights, dashes and the fills' and strokes' effect distances by the mean scale, and Transform Patterns moves pattern tiles, each copy `k` by the transformation `k` times. Such objects draw, export and expand through the same per-copy art, so the canvas and Expand Appearance agree (engine `tests_transformfx`, effects `tests_transformfx`, the dialog test). A Transform effect in a fill's or stroke's own effects applies the same options to that fill or stroke: its weight and dashes and its pattern follow the transformation, and with copies each copy is an object of its own; the canvas, export, Expand Appearance and Use Preview Bounds use the same art (effects `tests_transformfx`). The effects listed after it in that fill's or stroke's list keep their own distances and apply to the transformed art and to each copy, as an object's later effects do after the object's Transform effect: a Drop Shadow after it keeps its offset, an Offset Path after it offsets by its own distance, and an SVG filter after it keeps its scale and the origin of its user space. With Transform Objects off, the effects before it keep their distances too. Before, Scale Strokes & Effects scaled a fill's or stroke's later effects by the mean scale, so existing documents with such effects draw differently. Effects apply in the order they are listed ([Appearance attributes](https://helpx.adobe.com/illustrator/desktop/special-effects-styles/apply-graphic-styles/appearance-attributes-in-illustrator.html)); how the two options treat the effects after a fill's or stroke's own Transform effect is VectorCraft's own rule, following that order (effects `tests::rasterfollow::a_fills_own_transform_leaves_the_shadow_after_it`, `tests::rasterfollow::a_fills_own_transform_leaves_the_offset_after_it`, `tests::rasterfollow::a_fills_own_transform_leaves_the_svg_filter_after_it`, `tests::transformfx::a_fills_own_transform_with_scale_strokes_and_effects_leaves_its_later_effects`; engine `plugins::a_transform_after_a_painted_fill_effect_leaves_the_later_shadow_on_every_paint`). Public reference: [Scale objects](https://helpx.adobe.com/illustrator/desktop/manage-objects/reshape-transform-objects/scale-objects.html), [How to apply effects](https://helpx.adobe.com/illustrator/using/effects.html), [Distort and transform effects](https://helpx.adobe.com/illustrator/desktop/manage-objects/reshape-transform-objects/distort-and-transform-effects-in-illustrator.html). Scores and hours unchanged.
 - **Raster effects before a Transform effect:** effects apply in the order they are listed ([Appearance attributes](https://helpx.adobe.com/illustrator/desktop/special-effects-styles/apply-graphic-styles/appearance-attributes-in-illustrator.html)). A Drop Shadow, glow, blur, Feather or pixel filter listed before a Transform effect in the same list (an object's effects, or a fill's or stroke's own) now follows that Transform effect: its sizes scale by the mean scale, and a Drop Shadow's offset turns, reflects and scales with the art. VectorCraft applies this rule with Scale Strokes & Effects on or off. Before, such an effect was drawn at its own distances around the transformed art. The canvas, export, Expand Appearance, Object › Expand, Outline Stroke and the 3D effects use the same values (effects `tests::rasterfollow`; render `a_transform_after_a_drop_shadow_scales_the_shadow_with_the_art`; engine `objexpand::a_shadow_before_a_transform_expands_as_the_canvas_draws_it`, `outlinestroke::a_shadow_before_a_transform_outlines_as_the_canvas_draws_it`). Not yet: a Transform effect that makes copies or moves at random leaves the raster effects before it as they are; a Rasterize effect before a Transform effect keeps its pixel grid and room around the art; the angles and light directions of pixel filters do not turn or reflect with the art. Scores and hours unchanged.
 - **Raster effects inside an object or group with a Transform effect:** effects applied to a group affect everything in it ([Appearance attributes](https://helpx.adobe.com/illustrator/desktop/special-effects-styles/apply-graphic-styles/appearance-attributes-in-illustrator.html)). How a Transform effect changes the raster effects inside a group or object is VectorCraft's own rule. A group's Transform effect that moves it once now transforms the raster effects of its members, of their fills and strokes, of nested groups and of the art of the linked opacity masks in it, after the members' own Transform effects. A raster effect that a member's own Transform effect with copies or random holds back keeps its value through that effect and still transforms with the group's. VectorCraft applies the same rule to the raster effects of an object's fills and strokes under the object's Transform effect. Sizes scale by the mean scale and a Drop Shadow's offset turns, reflects and scales, with Scale Strokes & Effects on or off. Before, they kept their values, or with Scale Strokes & Effects on scaled by the mean scale with the offset unturned. A group's or object's Transform effect that makes copies or moves at random leaves them as before. The canvas, the redraw region, export, Expand Appearance, Object › Expand and Outline Stroke use the same values (effects `tests::rasterfollow`, `group::tests::a_compound_shapes_transform_turns_its_fills_shadow`; render `a_transform_scales_the_shadows_of_fills_and_members_with_the_art`; engine `objexpand::a_fills_shadow_under_the_objects_transform_expands_as_the_canvas_draws_it`, `objexpand::shadows_under_a_groups_or_an_objects_transform_expand_appearance_as_the_canvas_draws_them`, `outlinestroke::a_strokes_shadow_under_the_objects_transform_outlines_as_the_canvas_draws_it`). Scores and hours unchanged.
+- **A group's geometry effects after its members' own:** effects applied to a group affect everything in it, and effects apply in the order they are listed ([Appearance attributes](https://helpx.adobe.com/illustrator/desktop/special-effects-styles/apply-graphic-styles/appearance-attributes-in-illustrator.html)). Running a group's effects after its members' own is VectorCraft's own rule. The geometry effects of a group or layer (the effects that reshape outlines, such as Distort & Transform, Offset Path and Warp) now reshape what its members draw: the geometry effects of each visible path and compound path in it and of their fills and strokes, and a nested group's own geometry and Pathfinder effects, run first, at any depth. A symbol instance's own geometry effects run after those of its symbol's members in the same way. Before, the group's effects reshaped the members' outlines and the members' own effects ran afterwards: a 100 pt square with its own 10 pt Offset Path in a group with a 50% Transform drew 70 pt wide, and it now draws 60 pt wide. Existing documents with such groups draw differently. The canvas, export, Expand Appearance and the art that Pathfinder operations and compound shapes take from such a group use the same order (effects `group::tests::a_members_own_offset_runs_before_its_groups_scale`, `group::tests::a_members_own_scale_runs_before_its_groups_offset`, `group::tests::a_member_of_a_plain_nested_group_takes_its_own_effects_first`, `group::tests::a_nested_groups_own_effects_run_before_its_groups`, `group::tests::a_nested_groups_pathfinder_runs_before_its_groups_effects`, `group::tests::a_members_fill_effects_run_before_its_groups`, `group::tests::shape_art_of_a_group_applies_its_members_effects_first`, `group::tests::a_symbol_instances_effects_run_after_its_symbols_members_own`, `group::tests::a_baked_group_applies_its_members_effects_first`, `group::tests::a_baked_group_that_keeps_its_type_applies_its_members_effects_first`, `tests::rasterfollow::a_groups_transform_applies_after_its_members_own`; engine `objexpand::a_groups_effects_after_its_members_own_expand_as_the_canvas_draws_them`). Not yet: the own geometry effects of images, symbol instances, paths with a linked opacity mask or a 3D effect, and nested groups with a 3D effect in the group still run after the group's. Scores and hours unchanged.
 - **Warp Options (#1760):** Effect > Warp and existing Appearance effect links share the fifteen existing styles, original schematic previews, orientation choices and percent Bend/Distortion controls. Focused tests passed for real numeric entry and slider input, Preview/Cancel, immediate Enter/OK, mixed-style edits, target/slot/visibility preservation and Undo/Redo. Each applied style stays unchanged until an explicit Style choice. Original style-menu and live-preview captures were reviewed; their numeric values were supplied programmatically. Public references: [Reshaping with effects](https://helpx.adobe.com/illustrator/using/reshaping-objects-effects.html) and [Using effects](https://helpx.adobe.com/illustrator/using/effects.html). Warp geometry, optional Properties integration and remembered defaults are unchanged; no broader parity claim.
 - **Placed gradients follow the Warp effects:** under each of the fifteen Warp styles with a bend or a distortion, a gradient placed with the Gradient tool moves and scales from the object's bounds before the warp to its bounds after it, as under Free Distort; a stroke's gradient uses those bounds inflated by the stroke. This holds for an object's own Warp and for a fill's or stroke's own, on the canvas and in Object › Expand of the fill. In a group with a Warp effect, each path's and compound path's gradients follow its own bounds, a nested group's own fills and strokes follow the nested group's bounds, and the group's own fills and strokes follow the group's bounds. In the art Pathfinder and compound shapes take, a symbol instance's Warp moves the gradients of its symbol's art by the art's bounds, and a compound shape's Warp moves its gradients by the bounds of its area. A gradient fitted to the object still fits the warped outline, and a warp with no bend and no distortion leaves the gradient exactly in place. Existing documents with a Warp effect on art with a placed gradient draw differently: before, the gradient stayed where it was while the outline changed. How gradients follow the warp is VectorCraft's own rule; what the Warp effects do to the object is described in [Reshaping with effects](https://helpx.adobe.com/illustrator/using/reshaping-objects-effects.html) (effects `tests::warp_bends_when_the_warp_moves_the_outline`, `bake::tests::baked_warps_move_placed_gradients_from_the_bounds_to_the_warped_bounds`, `bake::tests::a_warp_with_no_bend_leaves_a_placed_gradient_exactly_in_place`, `bake::tests::a_fills_and_a_strokes_own_warp_move_its_placed_gradient_with_the_bounds`, `group::tests::a_groups_warp_moves_the_gradients_placed_on_its_paths_by_each_paths_bounds`, `group::tests::a_groups_warp_moves_its_own_a_nested_groups_and_a_compound_paths_gradients_by_their_bounds`, `group::tests::shape_art_moves_the_gradients_of_a_symbol_instances_art_and_a_compound_shape_with_a_warp`; render `objectfx::a_paths_gradient_moves_and_scales_with_its_warped_bounds`; engine `objexpand::a_placed_gradient_moved_by_a_warp_expands_as_the_canvas_draws_it`). Scores and hours unchanged.
 - **Warp as a Bézier patch per style:** each of the fifteen Warp styles bends the object's bounds as one Bézier patch whose control points the style sets from the bend and the size of the bounds; the horizontal distortion then scales each column of control points about its middle and the vertical distortion scales each row. The Warp effects and warp envelopes share the map, and content with no width or no height takes the middle of the patch along that side. New warps, the built-in graphic styles' Warps and warps opened from `.ai` files carry `version` 1 for it. Warps in `.vectorcraft` documents saved before it read as `version` 0 and keep their earlier look, and edits keep a warp's version; a `version` 0 warp saved to `.ai` opens again with `version` 1, since the file holds only its settings. The patches are VectorCraft's own rules; the styles and ranges are those of the Warp options in [Distort and transform effects](https://helpx.adobe.com/illustrator/desktop/manage-objects/reshape-transform-objects/distort-and-transform-effects-in-illustrator.html) (doc `live::tests::warp_nets_bend_each_style_as_its_own_patch`, `warp_net_arc_edges_are_concentric_circles`, `warp_net_distortion_scales_the_columns_then_the_rows`, `warp_net_takes_any_numbers`, `warp_net_bends_a_huge_box_without_overflowing`, `warp_envelopes_bend_flat_content_as_the_middle_of_the_patch`, `warp_envelopes_write_their_map_version_only_when_it_has_one`, `style_libs::tests::builtin_warp_styles_take_the_nets_map`; effects `tests::a_warp_draws_with_the_map_its_version_names`, `tests::a_warp_bends_a_flat_box_as_the_middle_of_its_patch`, `tests::new_warps_take_the_nets_version`; engine `effectedit::warps_keep_the_map_their_version_names`, `envelope::new_warp_envelopes_take_the_net_and_saved_ones_keep_their_map`; eps `ai_editing::tests::every_effect_a_graphic_style_holds_is_read_back`, `import::ai::tests::a_warp_envelope_opens_live`, `import::ai::tests::warp_envelopes_read_every_style`, `import::ai::style::tests::a_stack_of_fills_with_effects_of_their_own_is_read_as_itself`; ui-egui `dialogs::tests_warp::warp_options_edit_keeps_each_targets_map_version`). Scores and hours unchanged.