5 def collect_object_lods(self, obj):
7 lods += sorted([c for c in obj.children if c.lod_for_parent], key=(lambda l: l.lod_index))
8 for i, l in enumerate(lods):
9 if i>0 and l.lod_index!=i:
10 raise Exception("Invalid configuration on object {}: Inconsistent LOD indices".format(obj.name))
14 def export_object_resources(self, ctx, obj, resources, material_atlases):
15 if material_atlases is None:
18 lods = self.collect_object_lods(obj)
20 from .export_mesh import MeshExporter
21 from .export_material import MaterialAtlasExporter, MaterialExporter
22 from .mesh import create_mesh_from_object
23 from .material import Material, create_material_atlas
24 mesh_export = MeshExporter()
25 material_export = MaterialExporter()
26 material_atlas_export = MaterialAtlasExporter()
28 ctx.set_slices(len(lods))
30 lod_index = l.lod_index if l.lod_for_parent else 0
31 task = ctx.next_slice("LOD {}".format(lod_index))
34 atlas_flags = [m.render_mode!='EXTERNAL' and m.material_atlas for m in l.data.materials if m]
36 mmk = lambda m: m.shader if m.render_mode=='CUSTOM' else ""
37 material_atlas_key = mmk(l.data.materials[0])
38 key_mismatch = any(mmk(m)!=material_atlas_key for m in l.data.materials)
39 if not all(atlas_flags) or key_mismatch:
40 raise Exception("Invalid configuration on object {}: Mixed material atlas state")
42 if material_atlas_key in material_atlases:
43 material_atlas = material_atlases[material_atlas_key]
45 material_atlas = create_material_atlas(task.context, l.data.materials[0])
46 material_atlases[material_atlas_key] = material_atlas
48 tech_name = "{}.tech".format(material_atlas.name)
49 if tech_name not in resources:
50 material_atlas_export.export_technique_resources(material_atlas, resources)
51 resources[tech_name] = material_atlas_export.export_technique(material_atlas, resources)
52 elif l.material_slots and l.material_slots[0].material:
53 material = l.material_slots[0].material
54 subtask = task.task(material, 0.1)
55 if material.render_mode!='EXTERNAL':
56 tech_name = material.name+".tech"
57 if tech_name not in resources:
58 material = Material(material)
59 material_export.export_technique_resources(subtask, material, resources)
60 resources[tech_name] = material_export.export_technique(material, resources)
61 elif "stub.tech" not in resources:
62 resources["stub.tech"] = self.export_stub_technique()
64 mesh_name = l.data.name+".mesh"
65 if mesh_name not in resources:
66 subtask = task.task(l, 1.0)
67 mesh = create_mesh_from_object(subtask, l, material_atlas)
68 mesh_res = mesh_export.export_mesh(subtask, mesh)
69 resources[mesh_name] = mesh_res
71 def export_object(self, obj, resources):
73 raise ValueError("Object {} is not a mesh".format(obj.name))
75 lods = self.collect_object_lods(obj)
77 from .datafile import Resource, Statement
78 obj_res = Resource(obj.name+".object", "object")
79 statements = obj_res.statements
81 from .util import compute_bounding_sphere
82 center, radius = compute_bounding_sphere([v.co for v in obj.data.vertices])
83 statements.append(Statement("bounding_sphere_hint", *center, radius))
87 for i, l in enumerate(lods):
90 if l.data.name!=prev_mesh:
91 mesh_res = resources[l.data.name+".mesh"]
92 lod_st.append(obj_res.create_reference_statement("mesh", mesh_res))
94 prev_mesh = l.data.name
98 material = l.material_slots[0].material
100 if material.render_mode=='EXTERNAL':
101 tech_name = material.technique
102 elif material.material_atlas:
103 tech_name = "material_atlas_{}.tech".format(os.path.splitext(material.technique)[0])
105 tech_name = material.name+".tech"
107 tech_name = "stub.tech"
109 if tech_name!=prev_tech:
110 if material and material.render_mode=='EXTERNAL':
111 lod_st.append(Statement("technique", material.technique))
113 lod_st.append(obj_res.create_reference_statement("technique", resources[tech_name]))
114 prev_tech = tech_name
117 st = Statement("level_of_detail", i)
119 statements.append(st)
125 def export_stub_technique(self):
126 from .datafile import Resource, Statement, Token
127 tech_res = Resource("stub.tech", "technique")
128 pass_st = Statement("method", "")
129 tech_res.statements.append(pass_st)
130 mat_st = Statement("material")
131 pass_st.sub.append(mat_st)
132 mat_st.sub.append(Statement("type", Token("basic")))