+ return center, radius
+
+ def collect_object_lods(self, obj):
+ lods = [obj]
+ if self.export_lods:
+ lods += sorted([c for c in obj.children if c.lod_for_parent], key=(lambda l: l.lod_index))
+ for i, l in enumerate(lods):
+ if i>0 and l.lod_index!=i:
+ raise Exception("Inconsistent LOD indices")
+
+ return lods
+
+ def create_mesh_exporter(self):
+ from .export_mesh import MeshExporter
+ mesh_export = MeshExporter()
+ mesh_export.use_strips = self.use_strips
+ mesh_export.use_degen_tris = self.use_degen_tris
+ return mesh_export
+
+ def create_material_exporter(self):
+ from .export_material import MaterialExporter
+ material_export = MaterialExporter()
+ material_export.use_textures = self.use_textures
+ return material_export
+
+ def create_material_map_exporter(self):
+ from .export_material import MaterialMapExporter
+ material_map_export = MaterialMapExporter()
+ return material_map_export
+
+ def export_to_file(self, context, out_fn):
+ if self.export_all:
+ objs = [o for o in context.selected_objects if o.type=="MESH"]
+ else:
+ objs = [context.active_object]
+
+ from .util import Progress
+ progress = Progress(self.show_progress and context)
+
+ path, base = os.path.split(out_fn)
+ base, ext = os.path.splitext(base)
+
+ resources = {}
+ for i, obj in enumerate(objs):
+ if self.export_all:
+ out_fn = os.path.join(path, obj.name+ext)
+
+ progress.push_task_slice(obj.name, i, len(objs))
+ self.export_object_resources(context, obj, resources, progress)
+
+ obj_res = self.export_object(context, obj, progress, resources=resources)
+ refs = obj_res.collect_references()
+ if not self.shared_resources:
+ numbers = {}
+ for r in refs:
+ res_ext = os.path.splitext(r.name)[1]
+ n = numbers.get(res_ext, 0)
+ if n>0:
+ r.name = "{}_{}{}".format(base, n, res_ext)
+ else:
+ r.name = base+res_ext
+ numbers[res_ext] = n+1
+
+ if self.collection:
+ obj_res.write_collection(out_fn)
+ else:
+ for r in refs:
+ r.write_to_file(os.path.join(path, r.name))
+ obj_res.write_to_file(out_fn)
+
+ progress.pop_task()
+
+ def export_object_resources(self, context, obj, resources, progress, material_maps=None):
+ if material_maps is None:
+ material_maps = {}
+
+ lods = self.collect_object_lods(obj)
+
+ from .mesh import create_mesh_from_object
+ from .material import create_material_map
+ mesh_export = self.create_mesh_exporter()
+ material_export = self.create_material_exporter()
+ material_map_export = self.create_material_map_exporter()
+
+ for i, l in enumerate(lods):
+ lod_index = l.lod_index if l.lod_for_parent else 0
+ progress.push_task_slice("LOD {}".format(lod_index), i, len(lods))
+
+ material_map = None
+ mapped_count = sum(m.render_mode!='EXTERNAL' and m.material_map for m in l.data.materials if m)
+ if mapped_count:
+ mmk = lambda m: m.shader if m.render_mode=='CUSTOM' else ""
+ material_map_key = mmk(l.data.materials[0])
+ key_mismatch = any(mmk(m)!=material_map_key for m in l.data.materials)
+ if mapped_count!=len(l.data.materials) or key_mismatch:
+ raise Exception("Conflicting settings in object materials")
+
+ if material_map_key in material_maps:
+ material_map = material_maps[material_map_key]
+ else:
+ material_map = create_material_map(context, l.data.materials[0])
+ material_maps[material_map_key] = material_map
+
+ tech_name = "{}.tech".format(material_map.name)
+ if tech_name not in resources:
+ material_map_export.export_technique_resources(material_map, resources)
+ resources[tech_name] = material_map_export.export_technique(material_map, resources=resources)
+ elif l.material_slots and l.material_slots[0].material:
+ material = l.material_slots[0].material
+ if material.render_mode!='EXTERNAL':
+ tech_name = material.name+".tech"
+ if tech_name not in resources:
+ material_export.export_technique_resources(material, resources)
+ resources[tech_name] = material_export.export_technique(material, resources=resources)
+ elif "stub.tech" not in resources:
+ resources["stub.tech"] = self.export_stub_technique()
+
+ mesh_name = l.data.name+".mesh"
+ if mesh_name not in resources:
+ mesh = create_mesh_from_object(context, l, progress, material_map=material_map)
+ mesh_res = mesh_export.export_mesh(context, mesh, progress)
+ resources[mesh_name] = mesh_res
+
+ progress.pop_task()
+
+ def export_object(self, context, obj, progress, *, resources=None):
+ if resources is None:
+ resources = {}
+ self.export_object_resources(context, obj, resources, progress)
+
+ lods = self.collect_object_lods(obj)
+
+ from .datafile import Resource, Statement
+ obj_res = Resource(obj.name+".object", "object")
+ statements = obj_res.statements
+
+ center, radius = self.compute_bounding_sphere(obj)
+ statements.append(Statement("bounding_sphere_hint", *center, radius))