Isolate/hide objects or classes based on selection

R by RaphaëlVouilloz on 5 Oct 2023, edited 6 Oct 2023 # +3 votes

Hi,

I've started learning to code for BlenderBIM; the demo is great thanks.

As an exercise I made the following isolate/hide menu:

https://drive.google.com/file/d/1QZ3mLsyfp2UV2lDmYQIujaj7vbzAhHEV/view?usp=sharing

It's very similar to this discussion: https://community.osarch.org/discussion/767/

Have such tools already been implemented? Is it worth going on? (eg with shortcuts)

Let me know what you think :)

The code is :

import bpy

import blenderbim.tool as tool



visibility_changed = False



class IsolateSelectedObjects(bpy.types.Operator):

    bl_idname = "bim.isolate_selected_objects"

    bl_label = "Isolate Selected Objects"

    bl_options = {"REGISTER", "UNDO"}

    bl_description = "Isolate the selected objects"

    ifc_class: bpy.props.StringProperty()



    def execute(self, context):

        selected_objects = context.selected_objects

        for obj in bpy.data.objects:

            global visibility_changed

            if not visibility_changed:

                obj["original_visibility"] = obj.hide_viewport

            if obj not in selected_objects:

                obj.hide_viewport = True

        visibility_changed = True

        return {'FINISHED'}



class HideSelectedObjects(bpy.types.Operator):

    bl_idname = "bim.hide_selected_objects"

    bl_label = "Hide Selected Objects"

    bl_options = {"REGISTER", "UNDO"}

    bl_description = "Hide the selected objects"

    ifc_class: bpy.props.StringProperty()



    def execute(self, context):

        selected_objects = context.selected_objects

        for obj in bpy.data.objects:        

            global visibility_changed

            if not visibility_changed:

                obj["original_visibility"] = obj.hide_viewport

            if obj in selected_objects:

                obj.hide_viewport = True

        visibility_changed = True

        return {'FINISHED'}



class IsolateSelectedClasses(bpy.types.Operator, tool.Ifc.Operator):

    bl_idname = "bim.isolate_selected_classes"

    bl_label = "Isolate Selected Classes"

    bl_options = {"REGISTER", "UNDO"}

    bl_description = "Isolate the objects with the same class as one of the selected objects"

    ifc_class: bpy.props.StringProperty()



    def execute(self, context):

        selected_objects = context.selected_objects

        selected_classes = set()

        for selected_obj in selected_objects:

            element = tool.Ifc.get_entity(selected_obj)

            selected_classes.add(element.is_a())

        for obj in bpy.data.objects:

            global visibility_changed

            if not visibility_changed:

                obj["original_visibility"] = obj.hide_viewport

            if obj not in selected_objects:

                element = tool.Ifc.get_entity(obj)

                if element.is_a() not in selected_classes:

                    obj.hide_viewport = True

        visibility_changed = True

        return {'FINISHED'}



class HideSelectedClasses(bpy.types.Operator, tool.Ifc.Operator):

    bl_idname = "bim.hide_selected_classes"

    bl_label = "Hide Selected Classes"

    bl_options = {"REGISTER", "UNDO"}

    bl_description = "Hide the objects with the same class as one of the selected objects"

    ifc_class: bpy.props.StringProperty()



    def execute(self, context):

            selected_objects = context.selected_objects

            selected_classes = set()

            for selected_obj in selected_objects:

                element = tool.Ifc.get_entity(selected_obj)

                selected_classes.add(element.is_a())

            for obj in bpy.data.objects:

                global visibility_changed

                if not visibility_changed:

                    obj["original_visibility"] = obj.hide_viewport

                element = tool.Ifc.get_entity(obj)

                if element.is_a() in selected_classes:

                    obj.hide_viewport = True

            visibility_changed = True

            return {'FINISHED'}



class RestoreOriginalVisibility(bpy.types.Operator):

    bl_idname = "bim.restore_original_visibility"

    bl_label = "Restore Original Visibility"

    bl_options = {"REGISTER", "UNDO"}

    bl_description = "Restore the original visibility state of objects"



    def execute(self, context):

        for obj in bpy.data.objects:

            if "original_visibility" in obj:

                obj.hide_viewport = obj["original_visibility"]

        global visibility_changed

        visibility_changed = False

        return {'FINISHED'}

C by Coen on 5 Oct 2023 # +3 votes

Have such tools already been implemented? Is it worth going on? (eg with shortcuts)

It's very similar how BlenderBIM spreadsheet hides and isolates from sorted IfcGuids from a spreadsheet.

https://github.com/C-Claus/blenderbim_spreadsheet/blob/master/operator.py#L396

What I think would be a really cool feature is if you manage to save the filters with the camera standpoint. I couldn't manage to do that.

M by Moult on 5 Oct 2023 # +2 votes

The search filter panel has got quite a few ways to select elements, and there is also the select similar or filter selected panel which already exists. It sounds similar to what you've got there.

R by RaphaëlVouilloz on 5 Oct 2023 #

Thanks! What i had in mind was something similar to the HI HH IC HC HR hotkeys in Revit. I use a lot the "/" in Blender, which I found could be augmented in that way.

M by Moult on 5 Oct 2023 #

HI = \ or S-H

HH = H

IC = Select via outliner, search query, or click select class / select type in object information / select similar, then \ or S-H

HC = see above, then H

HR = A-H

R by RaphaëlVouilloz on 6 Oct 2023 #

Ok, thanks!