Curves: New tools for curves sculpt mode.

This commit contains various new features for curves sculpt mode
that have been developed in parallel.

* Selection:
  * Operator to select points/curves randomly.
  * Operator to select endpoints of curves.
  * Operator to grow/shrink an existing selection.
* New Brushes:
  * Pinch: Moves points towards the brush center.
  * Smooth: Makes individual curves straight without changing the root
    or tip position.
  * Puff: Makes curves stand up, aligning them with the surface normal.
  * Density: Add or remove curves to achieve a certain density defined
    by a minimum distance value.
  * Slide: Move root points on the surface.

Differential Revision: https://developer.blender.org/D15134

3 files changed, 79 insertions, 0 deletions

diff --git a/release/scripts/presets/keyconfig/keymap_data/blender_default.py b/release/scripts/presets/keyconfig/keymap_data/blender_default.py
index 623ca2340d1..d12d68ee5a0 100644
--- a/release/scripts/presets/keyconfig/keymap_data/blender_default.py
+++ b/release/scripts/presets/keyconfig/keymap_data/blender_default.py
@@ -5624,6 +5624,7 @@ def km_sculpt_curves(params):
         ("curves.disable_selection", {"type": 'TWO', "value": 'PRESS', "alt": True}, None),
         *_template_paint_radial_control("curves_sculpt"),
         *_template_items_select_actions(params, "sculpt_curves.select_all"),
+        ("sculpt_curves.min_distance_edit", {"type": 'R', "value": 'PRESS', "shift": True}, {}),
     ])
 
     return keymap
diff --git a/release/scripts/startup/bl_ui/space_toolsystem_toolbar.py b/release/scripts/startup/bl_ui/space_toolsystem_toolbar.py
index 5831aa52cc1..9f7ca89b8c9 100644
--- a/release/scripts/startup/bl_ui/space_toolsystem_toolbar.py
+++ b/release/scripts/startup/bl_ui/space_toolsystem_toolbar.py
@@ -2377,6 +2377,51 @@ class _defs_curves_sculpt:
             data_block='GROW_SHRINK'
         )
 
+    @ToolDef.from_fn
+    def pinch():
+        return dict(
+            idname="builtin_brush.pinch",
+            label="Pinch",
+            icon="ops.curves.sculpt_pinch",
+            data_block='PINCH'
+        )
+
+    @ToolDef.from_fn
+    def smooth():
+        return dict(
+            idname="builtin_brush.smooth",
+            label="Smooth",
+            icon="ops.curves.sculpt_smooth",
+            data_block='SMOOTH'
+        )
+
+    @ToolDef.from_fn
+    def puff():
+        return dict(
+            idname="builtin_brush.puff",
+            label="Puff",
+            icon="ops.curves.sculpt_puff",
+            data_block='PUFF'
+        )
+
+    @ToolDef.from_fn
+    def density():
+        return dict(
+            idname="builtin_brush.density",
+            label="Density",
+            icon="ops.curves.sculpt_density",
+            data_block="DENSITY"
+        )
+
+    @ToolDef.from_fn
+    def slide():
+        return dict(
+            idname="builtin_brush.slide",
+            label="Slide",
+            icon="ops.curves.sculpt_slide",
+            data_block="SLIDE"
+        )
+
 
 class _defs_gpencil_vertex:
 
@@ -3140,6 +3185,11 @@ class VIEW3D_PT_tools_active(ToolSelectPanelHelper, Panel):
             _defs_curves_sculpt.delete,
             _defs_curves_sculpt.snake_hook,
             _defs_curves_sculpt.grow_shrink,
+            _defs_curves_sculpt.pinch,
+            _defs_curves_sculpt.smooth,
+            _defs_curves_sculpt.puff,
+            _defs_curves_sculpt.density,
+            _defs_curves_sculpt.slide,
             None,
             *_tools_annotate,
         ],
diff --git a/release/scripts/startup/bl_ui/space_view3d.py b/release/scripts/startup/bl_ui/space_view3d.py
index 411bad65991..c2342e8949a 100644
--- a/release/scripts/startup/bl_ui/space_view3d.py
+++ b/release/scripts/startup/bl_ui/space_view3d.py
@@ -535,6 +535,31 @@ class _draw_tool_settings_context_mode:
             layout.prop(brush, "direction", expand=True, text="")
             layout.prop(brush, "falloff_shape", expand=True)
             layout.popover("VIEW3D_PT_tools_brush_falloff")
+        elif curves_tool == 'PINCH':
+            layout.prop(brush, "direction", expand=True, text="")
+            layout.prop(brush, "falloff_shape", expand=True)
+            layout.popover("VIEW3D_PT_tools_brush_falloff")
+        elif curves_tool == 'SMOOTH':
+            layout.prop(brush, "falloff_shape", expand=True)
+            layout.popover("VIEW3D_PT_tools_brush_falloff")
+        elif curves_tool == 'PUFF':
+            layout.prop(brush, "falloff_shape", expand=True)
+            layout.popover("VIEW3D_PT_tools_brush_falloff")
+        elif curves_tool == 'DENSITY':
+            layout.prop(brush, "falloff_shape", expand=True)
+            row = layout.row(align=True)
+            row.prop(brush.curves_sculpt_settings, "density_mode", text="", expand=True)
+            row = layout.row(align=True)
+            row.prop(brush.curves_sculpt_settings, "minimum_distance")
+            row.operator_context = 'INVOKE_REGION_WIN'
+            row.operator("sculpt_curves.min_distance_edit", text="", icon='DRIVER_DISTANCE')
+            row = layout.row(align=True)
+            row.enabled = brush.curves_sculpt_settings.density_mode != 'REMOVE'
+            row.prop(brush.curves_sculpt_settings, "density_add_attempts", text="Max Count")
+            layout.popover("VIEW3D_PT_tools_brush_falloff")
+            layout.popover("VIEW3D_PT_curves_sculpt_add_shape", text="Curve Shape")
+        elif curves_tool == "SLIDE":
+            layout.popover("VIEW3D_PT_tools_brush_falloff")
 
 
 class VIEW3D_HT_header(Header):
@@ -2005,6 +2030,9 @@ class VIEW3D_MT_select_sculpt_curves(Menu):
         layout.operator("sculpt_curves.select_all", text="All").action = 'SELECT'
         layout.operator("sculpt_curves.select_all", text="None").action = 'DESELECT'
         layout.operator("sculpt_curves.select_all", text="Invert").action = 'INVERT'
+        layout.operator("sculpt_curves.select_random", text="Random")
+        layout.operator("sculpt_curves.select_end", text="Endpoints")
+        layout.operator("sculpt_curves.select_grow", text="Grow")
 
 
 class VIEW3D_MT_angle_control(Menu):