scripts-blender/addons/brushstroke_tools/draw_tool.py

@@ -3,20 +3,26 @@ from . import utils
 from mathutils import Vector
 from bpy.types import WorkSpaceTool
 
+def preserve_draw_settings(context, restore=False):
+    props_list = ['curve_type', 'depth_mode', 'use_pressure_radius', 'use_project_only_selected', ]
+    if restore:
+        draw_settings_dict = context.scene['BSBST-TMP-draw_settings_dict']
+        for k, v in draw_settings_dict.items():
+            setattr(context.tool_settings.curve_paint_settings, k, v)
+        del context.scene['BSBST-TMP-draw_settings_dict']
+    else:
+        draw_settings_dict = dict()
+        for item in props_list:
+            draw_settings_dict[item] = getattr(context.tool_settings.curve_paint_settings, item)
+            context.scene['BSBST-TMP-draw_settings_dict'] = draw_settings_dict 
+
 def node_group_settings(ng_settings, op_settings):
     
     ng_settings.nodes['Color'].value = [*op_settings.brush_color, 1.]
     ng_settings.nodes['Smear'].outputs[0].default_value = op_settings.brush_smear
     #ng_settings.nodes["Object Info"].inputs[0].default_value = surface_object
 
-class BSBST_OT_draw(bpy.types.Operator):
+class BSBST_tool_settings(bpy.types.PropertyGroup):
-    """
-    Custom draw operation for hair curves
-    """
-    bl_idname = "brushstroke_tools.draw"
-    bl_label = "Custom Draw"
-    bl_options = {'REGISTER', 'UNDO'}
-    
     brush_color: bpy.props.FloatVectorProperty(name='Brush Color',
                                                size=3,
                                                subtype='COLOR',
@@ -25,6 +31,38 @@ class BSBST_OT_draw(bpy.types.Operator):
                                                soft_max=1,
                                                update=None,
                                                )
+
+class BSBST_OT_draw(bpy.types.Macro):
+    """
+    Custom draw operation for hair curves
+    """
+    bl_idname = "brushstroke_tools.draw"
+    bl_label = "Custom Draw"
+    bl_options = {'REGISTER', 'UNDO'}
+
+class BSBST_OT_pre_process_brushstroke(bpy.types.Operator):
+    """
+    Set up custom draw tool for curve drawing
+    """
+    bl_idname = "brushstroke_tools.pre_process_brushstroke"
+    bl_label = "Custom Draw Pre Process"
+    bl_options = {'REGISTER', 'UNDO'}
+
+    def execute(self, context):
+        preserve_draw_settings(context)
+
+        context.tool_settings.curve_paint_settings.curve_type = 'POLY'
+        context.tool_settings.curve_paint_settings.depth_mode = 'SURFACE'
+        context.tool_settings.curve_paint_settings.use_pressure_radius = True
+        context.tool_settings.curve_paint_settings.use_project_only_selected = True
+        return {'FINISHED'}
+
+class BSBST_OT_post_process_brushstroke(bpy.types.Operator):
+    """
+    """
+    bl_idname = "brushstroke_tools.post_process_brushstroke"
+    bl_label = "Custom Draw Post Process"
+    bl_options = {'REGISTER', 'UNDO'}
     brush_smear: bpy.props.FloatProperty(name='Smear',
                                          subtype='FACTOR',
                                          default=0,
@@ -34,45 +72,36 @@ class BSBST_OT_draw(bpy.types.Operator):
                                          )
 
     ng_process = None
-    
-    init = True
     gp = None
 
-    def modal(self, context, event):                
+    def execute(self, context):
-        if self.init:
+        if not self.ng_process:
-            #bpy.ops.grease_pencil.brush_stroke('INVOKE_DEFAULT')
+            preserve_draw_settings(context, restore=True)
-            bpy.ops.curves.draw('INVOKE_DEFAULT', wait_for_input=False)
+            return {'CANCELLED'}
-            self.init = False
+        tool_settings = context.scene.BSBST_tool_settings
-        else:
-            self.ng_process.nodes['settings.color'].value = [*self.brush_color, 1.]
-            self.ng_process.nodes['view_vector'].vector = context.space_data.region_3d.view_rotation @ Vector((0.0, 0.0, 1.0))
-            self.ng_process.nodes['new_key'].boolean = context.scene.tool_settings.use_keyframe_insert_auto
-            if 'BSBST_surface_object' in context.object.keys():
-                if context.object['BSBST_surface_object']:
-                    self.ng_process.nodes['surface_object'].inputs[0].default_value = context.object['BSBST_surface_object']
-            #node_group_settings(self.ng_settings, self)
-            bpy.ops.geometry.execute_node_group(name="set_brush_stroke_color", session_uid=self.ng_process.session_uid)
-            return {'FINISHED'}
-        return {'RUNNING_MODAL'}
 
+        self.ng_process.nodes['settings.color'].value = [*tool_settings.brush_color, 1.]
+        self.ng_process.nodes['view_vector'].vector = context.space_data.region_3d.view_rotation @ Vector((0.0, 0.0, 1.0))
+        self.ng_process.nodes['new_key'].boolean = context.scene.tool_settings.use_keyframe_insert_auto
+        if 'BSBST_surface_object' in context.object.keys():
+            if context.object['BSBST_surface_object']:
+                self.ng_process.nodes['surface_object'].inputs[0].default_value = context.object['BSBST_surface_object']
+        bpy.ops.geometry.execute_node_group(name="set_brush_stroke_color", session_uid=self.ng_process.session_uid)
+
+        preserve_draw_settings(context, restore=True)
+        return {'FINISHED'}
 
     def invoke(self, context, event):
         utils.ensure_resources()
-        if True:
+        self.gp = None
-            BSBST_OT_draw.gp = None
+        self.ng_process = bpy.data.node_groups['.brushstroke_tools.processing']
-            BSBST_OT_draw.ng_process = bpy.data.node_groups['.brushstroke_tools.processing']
+        return self.execute(context)
-
-            context.tool_settings.curve_paint_settings.curve_type = 'POLY' # TODO: restore later
-            context.tool_settings.curve_paint_settings.depth_mode = 'SURFACE' # TODO: restore later
-            context.tool_settings.curve_paint_settings.use_pressure_radius = True # TODO: restore later
-            context.tool_settings.curve_paint_settings.use_project_only_selected = True # TODO: restore later
-
-            context.window_manager.modal_handler_add(self)
-            return {'RUNNING_MODAL'}
-        else:
-            self.report({'WARNING'}, "Not editable")
-            return {'CANCELLED'}
 
+def register_custom_draw_macro():
+    op = BSBST_OT_draw.define("brushstroke_tools.pre_process_brushstroke")
+    op = BSBST_OT_draw.define("curves.draw")
+    op.properties.wait_for_input = False
+    op = BSBST_OT_draw.define("brushstroke_tools.post_process_brushstroke")
 
 class BrushstrokesCurves(WorkSpaceTool):
     bl_space_type = 'VIEW_3D'
@@ -92,20 +121,27 @@ class BrushstrokesCurves(WorkSpaceTool):
 
     def draw_settings(context, layout, tool):
         props = tool.operator_properties("brushstroke_tools.draw")
+        tool_settings = context.scene.BSBST_tool_settings
         layout.prop(context.tool_settings.curve_paint_settings , "radius_max")
         layout.prop(context.tool_settings.curve_paint_settings , "surface_offset")
-        layout.prop(props, "brush_color")
+        layout.prop(tool_settings, "brush_color")
 
 classes = [
+    BSBST_tool_settings,
+    BSBST_OT_pre_process_brushstroke,
+    BSBST_OT_post_process_brushstroke,
     BSBST_OT_draw,
 ]
 
 def register():
     for c in classes:
         bpy.utils.register_class(c)
+    bpy.types.Scene.BSBST_tool_settings = bpy.props.PointerProperty(type=BSBST_tool_settings)
+    register_custom_draw_macro()
     bpy.utils.register_tool(BrushstrokesCurves, after={"builtin.draw"}, group=True)
 
 def unregister():
     for c in reversed(classes):
         bpy.utils.unregister_class(c)
-    bpy.utils.unregister_tool(BrushstrokesCurves)
+    bpy.utils.unregister_tool(BrushstrokesCurves)
+    del bpy.types.Scene.BSBST_tool_settings