Profile manager thumnails (#2568)

src/blenderbim/blenderbim/bim/helper.py

@@ -267,6 +267,35 @@ def convert_property_group_from_si(property_group, skip_props=()):
         setattr(property_group, prop_name, prop_value)
 
 
+def draw_image_for_ifc_profile(draw, profile, size):
+    """generates image based on `profile` using `PIL.ImageDraw`"""
+    settings = ifcopenshell.geom.settings()
+    settings.set(settings.INCLUDE_CURVES, True)
+    shape = ifcopenshell.geom.create_shape(settings, profile)
+    verts = shape.verts
+    edges = shape.edges
+
+    grouped_verts = [[verts[i], verts[i + 1]] for i in range(0, len(verts), 3)]
+    grouped_edges = [[edges[i], edges[i + 1]] for i in range(0, len(edges), 2)]
+
+    max_x = max([v[0] for v in grouped_verts])
+    min_x = min([v[0] for v in grouped_verts])
+    max_y = max([v[1] for v in grouped_verts])
+    min_y = min([v[1] for v in grouped_verts])
+
+    dim_x = max_x - min_x
+    dim_y = max_y - min_y
+    max_dim = max([dim_x, dim_y])
+    scale = 100 / max_dim
+
+    for vert in grouped_verts:
+        vert[0] = round(scale * (vert[0] - min_x)) + ((size / 2) - scale * (dim_x / 2))
+        vert[1] = round(scale * (vert[1] - min_y)) + ((size / 2) - scale * (dim_y / 2))
+
+    for e in grouped_edges:
+        draw.line((tuple(grouped_verts[e[0]]), tuple(grouped_verts[e[1]])), fill="white", width=2)
+
+
 class IfcHeaderExtractor:
     def __init__(self, filepath: str):
         self.filepath = filepath

src/blenderbim/blenderbim/bim/module/model/product.py

@@ -32,6 +32,7 @@
 from blenderbim.bim.ifc import IfcStore
 from blenderbim.bim.module.model.data import AuthoringData
 from blenderbim.bim.module.model.prop import store_cursor_position
+from blenderbim.bim.helper import draw_image_for_ifc_profile
 from ifcopenshell.api.pset.data import Data as PsetData
 from mathutils import Vector, Matrix
 from bpy_extras.object_utils import AddObjectHelper
@@ -370,30 +371,8 @@ def _execute(self, context):
                 material = ifcopenshell.util.element.get_material(element)
                 if material and material.is_a("IfcMaterialProfileSet"):
                     profile = material.MaterialProfiles[0].Profile
-                    settings = ifcopenshell.geom.settings()
-                    settings.set(settings.INCLUDE_CURVES, True)
-                    shape = ifcopenshell.geom.create_shape(settings, profile)
-                    verts = shape.verts
-                    edges = shape.edges
-                    grouped_verts = [[verts[i], verts[i + 1]] for i in range(0, len(verts), 3)]
-                    grouped_edges = [[edges[i], edges[i + 1]] for i in range(0, len(edges), 2)]
-
-                    max_x = max([v[0] for v in grouped_verts])
-                    min_x = min([v[0] for v in grouped_verts])
-                    max_y = max([v[1] for v in grouped_verts])
-                    min_y = min([v[1] for v in grouped_verts])
-
-                    dim_x = max_x - min_x
-                    dim_y = max_y - min_y
-                    max_dim = max([dim_x, dim_y])
-                    scale = 100 / max_dim
-
-                    for vert in grouped_verts:
-                        vert[0] = round(scale * (vert[0] - min_x)) + ((size / 2) - scale * (dim_x / 2))
-                        vert[1] = round(scale * (vert[1] - min_y)) + ((size / 2) - scale * (dim_y / 2))
-
-                    for e in grouped_edges:
-                        draw.line((tuple(grouped_verts[e[0]]), tuple(grouped_verts[e[1]])), fill="white", width=2)
+                    draw_image_for_ifc_profile(draw, profile, size)
+
                 elif material and material.is_a("IfcMaterialLayerSet"):
                     thicknesses = [l.LayerThickness for l in material.MaterialLayers]
                     total_thickness = sum(thicknesses)

src/blenderbim/blenderbim/bim/module/profile/__init__.py

@@ -17,7 +17,7 @@
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
 
 import bpy
-from . import ui, prop, operator
+from . import ui, prop, operator, data
 
 classes = (
     operator.AddProfileDef,
@@ -43,3 +43,5 @@ def register():
 
 def unregister():
     del bpy.types.Scene.BIMProfileProperties
+    if data.ProfileData.preview_collection:
+        bpy.utils.previews.remove(data.ProfileData.preview_collection)

src/blenderbim/blenderbim/bim/module/profile/data.py

@@ -27,6 +27,7 @@ def refresh():
 
 class ProfileData:
     data = {}
+    preview_collection = bpy.utils.previews.new()
     is_loaded = False
 
     @classmethod

src/blenderbim/blenderbim/bim/module/profile/operator.py

@@ -22,6 +22,7 @@
 import blenderbim.tool as tool
 import blenderbim.bim.module.model.profile as model_profile
 from blenderbim.bim.module.model.slab import DecorationsHandler
+from blenderbim.bim.module.profile.prop import generate_thumbnail_for_active_profile
 
 
 class LoadProfiles(bpy.types.Operator):
@@ -103,6 +104,7 @@ def _execute(self, context):
         ifcopenshell.api.run("profile.edit_profile", tool.Ifc.get(), profile=profile, attributes=attributes)
         model_profile.DumbProfileRegenerator().regenerate_from_profile_def(profile)
         bpy.ops.bim.load_profiles()
+        generate_thumbnail_for_active_profile()
 
 
 class AddProfileDef(bpy.types.Operator, tool.Ifc.Operator):
@@ -169,6 +171,7 @@ def _execute(self, context):
 
         profile = tool.Model.export_profile(obj)
         if not profile:
+
             def msg(self, context):
                 self.layout.label(text="INVALID PROFILE: " + indices[1])
 

src/blenderbim/blenderbim/bim/module/profile/prop.py

@@ -20,9 +20,11 @@
 import ifcopenshell
 import ifcopenshell.util.schema
 import ifcopenshell.util.attribute
+import blenderbim.tool as tool
 from blenderbim.bim.ifc import IfcStore
 from blenderbim.bim.prop import StrProperty, Attribute
 from blenderbim.bim.module.profile.data import ProfileData
+from blenderbim.bim.helper import draw_image_for_ifc_profile
 from bpy.types import PropertyGroup
 from bpy.props import (
     PointerProperty,
@@ -55,3 +57,35 @@ class BIMProfileProperties(PropertyGroup):
     active_profile_id: IntProperty(name="Active Profile Id")
     profile_attributes: CollectionProperty(name="Profile Attributes", type=Attribute)
     profile_classes: EnumProperty(items=get_profile_classes, name="Profile Classes")
+
+
+def generate_thumbnail_for_active_profile():
+    from PIL import Image, ImageDraw
+
+    if bpy.app.background:
+        return
+
+    props = bpy.context.scene.BIMProfileProperties
+    ifc_file = tool.Ifc.get()
+    preview_collection = ProfileData.preview_collection
+
+    if not props.profiles:
+        bpy.ops.bim.load_profiles()
+
+    profile_id = props.profiles[props.active_profile_index].ifc_definition_id
+    profile = ifc_file.by_id(profile_id)
+
+    # generate image
+    size = 128
+    img = Image.new("RGBA", (size, size))
+    draw = ImageDraw.Draw(img)
+    draw_image_for_ifc_profile(draw, profile, size)
+    pixels = [item for sublist in img.getdata() for item in sublist]
+
+    # save generated image to preview collection
+    profile_id_str = str(profile_id)
+    if profile_id_str in preview_collection:
+        del preview_collection[profile_id_str]
+    preview_image = preview_collection.new(profile_id_str)
+    preview_image.image_size = size, size
+    preview_image.image_pixels_float = pixels

src/blenderbim/blenderbim/bim/module/profile/ui.py

@@ -16,12 +16,15 @@
 # You should have received a copy of the GNU General Public License
 # along with BlenderBIM Add-on.  If not, see <http://www.gnu.org/licenses/>.
 
+from bpy.types import Panel, UIList
+import bpy
+
 import blenderbim.bim.helper
 import blenderbim.tool as tool
-from bpy.types import Panel, UIList
 from blenderbim.bim.module.profile.data import ProfileData
+from blenderbim.bim.module.profile.prop import generate_thumbnail_for_active_profile
 
-
+# Profile Manager Class
 class BIM_PT_profiles(Panel):
     bl_label = "IFC Profiles"
     bl_idname = "BIM_PT_profiles"
@@ -40,6 +43,18 @@ def draw(self, context):
             ProfileData.load()
         self.props = context.scene.BIMProfileProperties
 
+        if self.props.is_editing:
+            preview_collection = ProfileData.preview_collection
+            box = self.layout.box()
+            profile_id = self.props.profiles[self.props.active_profile_index].ifc_definition_id
+            preview_image = preview_collection.get(str(profile_id), None)
+
+            if preview_image:
+                box.template_icon(icon_value=preview_image.icon_id, scale=5)
+            else:
+                # TODO: test if called multiple times before one is loaded
+                generate_thumbnail_for_active_profile()
+
         row = self.layout.row(align=True)
         row.label(text=f"{ProfileData.data['total_profiles']} Named Profiles Found", icon="SNAP_GRID")
         if self.props.is_editing: