1. Added a Json File having SpectralDB Materials. 2. Implemented UIList: Lists down the materials to be mapped with. 3. By default Not mapped material is white. 4. Added a Drop down for category and Subcategory from where the user can select the material from spectralDB 5. Corrected hardcoded render123.hdr as highlighted by Manu in #5033

src/blenderbim/blenderbim/bim/module/light/__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, list
 
 import stat
 from pathlib import Path
@@ -38,10 +38,13 @@ classes = (
     operator.RadianceRender,
     operator.ViewFromSun,
     operator.RefreshIFCMaterials,
+    operator.UnmapMaterial,
+    prop.RadianceMaterial,
     prop.BIMSolarProperties,
     prop.RadianceExporterProperties,
     ui.BIM_PT_radiance_exporter,
     ui.BIM_PT_solar,
+    list.MATERIAL_UL_radiance_materials,
 )
 
 

src/blenderbim/blenderbim/bim/module/light/list.py

@@ -0,0 +1,18 @@
+import bpy
+import json
+import os
+
+with open(os.path.join(os.path.dirname(__file__), "spectraldb.json"), 'r') as f:
+    spectraldb = json.load(f)
+
+class MATERIAL_UL_radiance_materials(bpy.types.UIList):
+    def draw_item(self, context, layout, data, item, icon, active_data, active_propname, index):
+        if self.layout_type in {'DEFAULT', 'COMPACT'}:
+            row = layout.row(align=True)
+            row.prop(item, "name", text="", emboss=False, icon_value=icon)
+            if item.is_mapped:
+                row.label(text=f"{item.category} - {item.subcategory}")
+                op = row.operator("bim.unmap_material", text="", icon='X')
+                op.material_index = index
+            else:
+                row.label(text="Not Mapped (White)")

src/blenderbim/blenderbim/bim/module/light/materials.json

@@ -1,27 +0,0 @@
-[
-  {
-    "ceiling": {
-      "Black Ceiling 1": "void plastic black_ceiling\n0\n0\n5 0.0460 0.0456 0.0463 0.0052 0.2000",
-      "Black Ceiling 2": "void plastic black_ceiling\n0\n0\n5 0.1116 0.1085 0.0938 0.0000 0.0000",
-      "Plastic Ceiling Vent E14 526": "void plastic plastic_ceiling_vent_e14_526\n0\n0\n5 0.7384 0.7195 0.6540 0.0110 0.0500",
-      "Specular Reflective Ceiling Panels": "void plastic specular_reflective_ceiling_panels\n0\n0\n5 0.7708 0.7673 0.6819 0.0741 0.0500"
-    },
-    "Door": {
-      "Wooden Door": "void plastic wooden_door\n0\n0\n5 0.6164 0.4257 0.2156 0.0185 0.2000",
-      "Wooden Door 2": "void plastic wooden_door_2\n0\n0\n5 0.0403 0.0388 0.0406 0.0121 0.2000",
-      "White Wooden Door": "void plastic white_wooden_door\n0\n0\n5 0.7893 0.7502 0.6413 0.0080 0.2000",
-      "Off White Door": "void plastic off_white_door\n0\n0\n5 0.8607 0.8611 0.7852 0.0258 0.2000",
-      "Bedroom Door": "void plastic bedroom_door\n0\n0\n5 0.2508 0.0782 0.0111 0.0279 0.2000"
-    },
-    "Floor": {
-      "Light Blue Ceramic": "void plastic light_blue_ceramic\n0\n0\n5 0.7477 0.7776 0.7807 0.0323 0.1000",
-      "Light Grey Ceramic": "void plastic light_grey_ceramic\n0\n0\n5 0.6386 0.5941 0.4982 0.0106 0.2000",
-      "Purple Carpet": "void plastic purple_carpet\n0\n0\n5 0.0425 0.0179 0.0371 0.0001 0.3000"
-    },
-    "Wall": {
-      "Dirty Dark Pink Painted Wall": "void plastic dirty_dark_pink_painted_wall\n0\n0\n5 0.3533 0.1751 0.1690 0.0000 0.2000",
-      "Blue Green Painted Walls": "void plastic blue_green_painted_walls\n0\n0\n5 -0.0013 0.2092 0.2601 0.0140 0.2000",
-      "Red Painted Wall": "void plastic red_painted_wall\n0\n0\n5 0.4621 0.0156 0.0091 0.0396 0.2000"
-    }
-  }
-]

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

@@ -38,6 +38,9 @@ from blenderbim.bim.module.light.data import SolarData
 
 ifc_materials = []
 
+with open(os.path.join(os.path.dirname(__file__), "spectraldb.json"), 'r') as f:
+    spectraldb = json.load(f)
+
 
 class ExportOBJ(bpy.types.Operator):
     """Exports the IFC File to OBJ"""
@@ -159,6 +162,17 @@ class RadianceRender(bpy.types.Operator):
         hour = sun_props.hour
         minute = sun_props.minute
 
+        print("Sun Properties:")
+        print("Latitude: ", latitude)
+        print("Longitude: ", longitude)
+        print("Timezone: ", timezone)
+        print("Month: ", month)
+        print("Day: ", day)
+        print("Hour: ", hour)
+        print("Minute: ", minute)
+
+
+
         camera = self.get_active_camera(context)
         if camera is None:
             self.report({"ERROR"}, "No active camera found in the scene. Please add a camera and set it as active.")
@@ -174,9 +188,10 @@ class RadianceRender(bpy.types.Operator):
             latitude=latitude,
             longitude=longitude,
             timezone=timezone,
+            year=2024,
             sunny_with_sun=True,
             sunny_without_sun=False,
-            cloudy=True,
+            cloudy=False,
             ground_reflectance=0.2,
             turbidity=3.0,
         )
@@ -204,7 +219,7 @@ class RadianceRender(bpy.types.Operator):
         # 0
         # 4 0 0 -1 180
 
-        if choose_hdr_image == "Noon":
+        if use_hdr and choose_hdr_image == "Noon":
 
             with open(sky_file_path, "w") as f:
                 f.write(sky_description_str)
@@ -268,14 +283,14 @@ ground_glow source ground
 4 0 0 -1 180"""
                 )
 
-        else:
+        elif not use_hdr:
             with open(sky_file_path, "w") as f:
                 f.write(sky_description_str)
                 f.write("\n")
-                f.write("skyfunc glow sky_glow\n0\n0\n4 .9 .9 1.15 0\n")
+                # f.write("skyfunc glow sky_glow\n0\n0\n4 .9 .9 1.15 0\n")
-                f.write("sky_glow source sky\n0\n0\n4 0 0 1 180\n")
+                # f.write("sky_glow source sky\n0\n0\n4 0 0 1 180\n")
-                f.write("skyfunc glow ground_glow\n0\n0\n4 1.4 .9 .6 0\n")
+                # f.write("skyfunc glow ground_glow\n0\n0\n4 1.4 .9 .6 0\n")
-                f.write("ground_glow source ground\n0\n0\n4 0 0 -1 180\n")
+                # f.write("ground_glow source ground\n0\n0\n4 0 0 -1 180\n")
 
         props = context.scene.radiance_exporter_properties
 
@@ -286,20 +301,46 @@ ground_glow source ground
             data = props.get_mappings_dict()
 
         materials_file = os.path.join(output_dir, "materials.rad")
+        written_materials = set()
+
+        all_materials = set(ifc_materials)
+
         with open(materials_file, "w") as file:
-            file.write("void plastic white\n0\n0\n5 0.8 0.8 0.8 0 0\n")
+            # Write default materials
-            file.write("void plastic blue_plastic\n0\n0\n5 0.1 0.2 0.8 0.05 0.1\n")
+            default_materials = [
-            file.write("void plastic red_plastic\n0\n0\n5 0.8 0.1 0.2 0.05 0.1\n")
+                "void plastic white\n0\n0\n5 0.8 0.8 0.8 0 0\n",
-            file.write("void metal silver_metal\n0\n0\n5 0.8 0.8 0.8 0.9 0.1\n")
+                # "void plastic blue_plastic\n0\n0\n5 0.1 0.2 0.8 0.05 0.1\n",
-            file.write("void glass clear_glass\n0\n0\n3 0.96 0.96 0.96\n")
+                # "void plastic red_plastic\n0\n0\n5 0.8 0.1 0.2 0.05 0.1\n",
-            file.write("void light white_light\n0\n0\n3 1.0 1.0 1.0\n")
+                # "void metal silver_metal\n0\n0\n5 0.8 0.8 0.8 0.9 0.1\n",
-            file.write("void trans olive_trans\n0\n0\n7 0.6 0.7 0.4 0.05 0.05 0.7 0.2\n")
+                # "void glass clear_glass\n0\n0\n3 0.96 0.96 0.96\n",
+                # "void light white_light\n0\n0\n3 1.0 1.0 1.0\n",
+                # "void trans olive_trans\n0\n0\n7 0.6 0.7 0.4 0.05 0.05 0.7 0.2\n",
+            ]
+            for material in default_materials:
+                file.write(material)
+                written_materials.add(material.split()[2])  # Add material name to written set
+            
+            print(data)
+            print(default_materials)
 
-            for style_id, radiance_material in data.items():
+            for style_id in all_materials:
-                # print(style_id, radiance_material)
+                material = next((m for m in props.materials if m.style_id == style_id), None)
-                file.write("inherit alias " + style_id + " " + data.get(style_id, "white") + "\n")
+                if material and material.is_mapped:
+                    category, subcategory = material.category, material.subcategory
+                    if category in spectraldb and subcategory in spectraldb[category]:
+                        material_def = spectraldb[category][subcategory]
+                        material_name = material_def.split()[2]
+                        if material_name not in written_materials:
+                            file.write(material_def + "\n")
+                            written_materials.add(material_name)
+                        file.write(f"inherit alias {style_id} {material_name}\n")
+                    else:
+                        file.write(f"inherit alias {style_id} white\n")
+                else:
+                    # If the material is not mapped, alias it to white
+                    file.write(f"inherit alias {style_id} white\n")
 
-        self.report({"INFO"}, "Exported Materials Rad file to: {}".format(materials_file))
+        self.report({"INFO"}, f"Exported Materials Rad file to: {materials_file}")
 
         # Run obj2mesh
         rtm_file_path = os.path.join(output_dir, "model.rtm")
@@ -334,7 +375,7 @@ ground_glow source ground
             variability=variability,
         )
 
-        output_hdr_path = os.path.join(output_dir, f"render123.{output_file_format.lower()}")
+        output_hdr_path = os.path.join(output_dir, f"{output_file_name}.{output_file_format.lower()}")
 
         if output_file_format == "HDR":
             with open(output_hdr_path, "wb") as wtr:
@@ -464,12 +505,31 @@ class RefreshIFCMaterials(bpy.types.Operator):
         props = context.scene.radiance_exporter_properties
         ifc_file = tool.Ifc.get() if props.should_load_from_memory else ifcopenshell.open(props.ifc_file)
 
+        props.materials.clear()
+
         for style in ifc_file.by_type("IfcSurfaceStyle"):
             for render_item in style.Styles:
                 if render_item.is_a("IfcSurfaceStyleRendering"):
                     style_id = f"IfcSurfaceStyleRendering-{render_item.id()}"
+                    ifc_materials.append(style_id)
                     style_name = style.Name or f"Unnamed Style {render_item.id()}"
-                    if not props.get_material_mapping(style_name):
+                    props.add_material_mapping(style_id, style_name)
-                        props.add_material_mapping(style_id, style_name)
 
+        props.active_material_index = 0 if props.materials else -1
+
+        self.report({'INFO'}, f"Refreshed {len(props.materials)} IFC materials")
         return {"FINISHED"}
+
+
+class UnmapMaterial(bpy.types.Operator):
+    bl_idname = "bim.unmap_material"
+    bl_label = "Unmap Material"
+    bl_options = {'REGISTER', 'UNDO'}
+    
+    material_index: bpy.props.IntProperty()
+
+    def execute(self, context):
+        props = context.scene.radiance_exporter_properties
+        material = props.materials[self.material_index]
+        props.unmap_material(material.name)
+        return {'FINISHED'}

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

@@ -19,6 +19,7 @@
 import bpy
 import pytz
 import tzfpy
+import json
 import datetime
 import blenderbim.tool as tool
 from math import radians, pi
@@ -32,10 +33,16 @@ from bpy.props import (
     BoolProperty,
     CollectionProperty,
 )
+import os
 from bpy.types import PropertyGroup
 from blenderbim.bim.module.light.data import SolarData
 from blenderbim.bim.module.light.decorator import SolarDecorator
 
+sun_position = tool.Blender.get_sun_position_addon()
+
+with open(os.path.join(os.path.dirname(__file__), "spectraldb.json"), 'r') as f:
+    spectraldb = json.load(f)
+
 
 def get_sites(self, context):
     if not SolarData.is_loaded:
@@ -149,6 +156,13 @@ def update_sun_path():
         obj.data.ortho_scale = props.sun_path_size * 2
 
 
+class RadianceMaterial(PropertyGroup):
+    name: StringProperty(name="Name")
+    style_id: StringProperty(name="Style ID")
+    category: StringProperty(name="Category")
+    subcategory: StringProperty(name="Subcategory")
+    is_mapped: BoolProperty(name="Is Mapped", default=False)
+
 class RadianceExporterProperties(PropertyGroup):
 
     def update_json_file(self, context):
@@ -164,24 +178,35 @@ class RadianceExporterProperties(PropertyGroup):
             self.ifc_file = bpy.path.abspath(self.ifc_file)
 
     def add_material_mapping(self, style_id, style_name):
-        item = self.material_mappings.add()
+        item = self.materials.add()
         item.name = style_name
-        item["style_id"] = style_id
+        item.style_id = style_id
-        item["radiance_material"] = "white"  # Default to white
+        item.category = ""
+        item.subcategory = ""
+        return item
 
     def get_material_mapping(self, style_name):
-        return next((item for item in self.material_mappings if item.name == style_name), None)
+        return next((item for item in self.materials if item.name == style_name), None)
 
-    def set_material_mapping(self, style_id, style_name, radiance_material):
+    def set_material_mapping(self, style_id, style_name, category, subcategory):
         item = self.get_material_mapping(style_name)
         if item:
-            item["radiance_material"] = radiance_material
+            item.category = category
+            item.subcategory = subcategory
         else:
             self.add_material_mapping(style_id, style_name)
-            self.material_mappings[-1]["radiance_material"] = radiance_material
+            self.materials[-1].category = category
+            self.materials[-1].subcategory = subcategory
 
     def get_mappings_dict(self):
-        return {item["style_id"]: item["radiance_material"] for item in self.material_mappings}
+        return {item.style_id: (item.category, item.subcategory) for item in self.materials if item.category and item.subcategory}
+    
+    def unmap_material(self, style_name):
+        item = self.get_material_mapping(style_name)
+        if item:
+            item.category = ""
+            item.subcategory = ""
+            item.is_mapped = False
 
     use_json_file: BoolProperty(
         name="Upload JSON",
@@ -193,7 +218,53 @@ class RadianceExporterProperties(PropertyGroup):
         name="Is Exporting", description="Whether the OBJ export is in progress", default=False
     )
 
-    material_mappings: bpy.props.CollectionProperty(type=bpy.types.PropertyGroup, name="Material Mappings")
+    categories = [
+        ('Wall', 'Wall', ''),
+        ('Floor', 'Floor', ''),
+        ('Ceiling', 'Ceiling', ''),
+        ('Door', 'Door', ''),
+        ('Furniture', 'Furniture', ''),
+        ('Exterior Floor', 'Exterior Floor', ''),
+        ('Others', 'Others', ''),
+        ('Exterior Building', 'Exterior Building', ''),
+        ('Window Mullion', 'Window Mullion', ''),
+        ('PV', 'PV', ''),
+        ('Plant', 'Plant', ''),
+        ('Exterior', 'Exterior', ''),
+        ('Color Swatch', 'Color Swatch', ''),
+    ]
+
+    def update_material_mapping(self, context):
+        if self.active_material_index >= 0 and self.active_material_index < len(self.materials):
+            active_material = self.materials[self.active_material_index]
+            active_material.category = self.category
+            active_material.subcategory = self.subcategory
+            active_material.is_mapped = True
+            print(f"Material '{active_material.name}' mapped to {self.category} - {self.subcategory}")
+
+    category: bpy.props.EnumProperty(
+        items=categories,
+        name="Category",
+        description="Material category",
+        update=update_material_mapping
+    )
+
+    def get_subcategories(self, context):
+        if self.category in spectraldb:
+            return [(k, k, '') for k in spectraldb[self.category].keys()]
+        return []
+
+    subcategory: bpy.props.EnumProperty(
+        items=get_subcategories,
+        name="Subcategory",
+        description="Material subcategory",
+        update=update_material_mapping
+    )
+
+    materials: CollectionProperty(type=RadianceMaterial)
+    active_material_index: IntProperty()
+
+    # material_mappings: bpy.props.CollectionProperty(type=bpy.types.PropertyGroup, name="Material Mappings")
     # material_mappings: CollectionProperty(type=MaterialMapping)
 
     should_load_from_memory: BoolProperty(

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

@@ -55,15 +55,29 @@ class BIM_PT_radiance_exporter(bpy.types.Panel):
         if props.use_json_file:
             row = layout.row()
             row.prop(props, "json_file")
-        else:
-            # Material Mappings UI
-            layout.label(text="Material Mappings:")
-            for item in props.material_mappings:
-                row = layout.row(align=True)
-                row.label(text=item.name)
-                row.prop(item, '["radiance_material"]', text="")
 
-            layout.operator("bim.refresh_ifc_materials")
+        if not props.use_json_file:
+            row = layout.row()
+            layout.label(text="Info: Unmapped materials default to white")
+            row = layout.row()
+            row.template_list("MATERIAL_UL_radiance_materials", "", props, "materials", props, "active_material_index")
+
+            if len(props.materials) > 0:
+                col = layout.column(align=True)
+                col.prop(props, "category")
+                if props.category:
+                    col.prop(props, "subcategory")
+
+                if props.active_material_index >= 0 and props.active_material_index < len(props.materials):
+                    active_material = props.materials[props.active_material_index]
+                    if active_material.category and active_material.subcategory:
+                        layout.label(text=f"Mapped: {active_material.name} to {active_material.category} - {active_material.subcategory}")
+                    else:
+                        layout.label(text=f"Select category and subcategory for: {active_material.name}")
+            
+            row = layout.row()
+            row.operator("bim.refresh_ifc_materials", text="Refresh IFC Materials")
+
 
         layout.separator()
         row = layout.row()
@@ -95,8 +109,9 @@ class BIM_PT_radiance_exporter(bpy.types.Panel):
         row = layout.row()
         row.prop(props, "use_hdr")
 
-        row = layout.row()
+        if props.use_hdr:
-        row.prop(props, "choose_hdr_image")
+            row = layout.row()
+            row.prop(props, "choose_hdr_image")
 
         row = layout.row()
         row.operator("export_scene.radiance", text="Export Geometry for Simulation")