2 def export_mesh(self, ctx, mesh_or_obj):
3 from .mesh import Mesh, create_mesh_from_object
5 if type(mesh_or_obj)==Mesh:
8 task = ctx.task("Preparing mesh", 0.9)
9 mesh = create_mesh_from_object(task, mesh_or_obj)
11 from .datafile import Resource, Statement, Token
12 resource = Resource(mesh.name+".mesh", "mesh")
13 statements = resource.statements
15 task = ctx.task("Creating statements", 1.0)
17 st = Statement("vertices", Token("VERTEX3_FLOAT"))
19 if mesh.vertices[0].color:
20 st.append(Token("COLOR4_UBYTE"))
23 for u in mesh.uv_layers:
25 min_val = min(*u.uvs[0])
26 max_val = max(*u.uvs[1])
28 min_val = min(min_val, *c)
29 max_val = max(max_val, *c)
30 uv_type = "USHORT" if min_val>=0.0 and max_val<=1.0 else "FLOAT"
31 if uv_type=="FLOAT" and stride%4:
33 st.append(Token("PADDING{}".format(pad)))
36 st.append(Token("TEXCOORD{}_{}".format(size, uv_type)))
38 st.append(Token("TEXCOORD{}_{}_{}".format(size, u.unit, uv_type)))
39 stride += (2 if uv_type=="USHORT" else 4)*size
40 if mesh.vertex_groups:
41 st.append(Token("WEIGHT{}_USHORT".format(mesh.max_groups_per_vertex)))
42 st.append(Token("GROUP{}_UBYTE".format(mesh.max_groups_per_vertex)))
43 stride += 3*mesh.max_groups_per_vertex
44 st.append(Token("NORMAL3_BYTE"))
46 if mesh.uv_layers and mesh.tangent_vecs:
47 st.append(Token("TANGENT3_BYTE"))
51 st.append(Token("PADDING{}_UBYTE".format(pad)))
56 uvs = [None]*len(mesh.uv_layers)
60 for v in mesh.vertices:
62 st.sub.append(Statement("normal", *v.normal))
65 st.sub.append(Statement("color", *v.color))
67 for i, u in enumerate(mesh.uv_layers):
70 st.sub.append(Statement("texcoord", *v.uvs[i]))
72 st.sub.append(Statement("multitexcoord", u.unit, *v.uvs[i]))
76 st.sub.append(Statement("tangent", *v.tan))
78 if mesh.vertex_groups:
79 v_group = [g.group for g in v.groups]
80 v_weight = [g.weight for g in v.groups]
82 st.sub.append(Statement("group", *v_group))
85 st.sub.append(Statement("weight", *v_weight))
87 st.sub.append(Statement("vertex", *v.co))
92 for s in mesh.vertex_sequence:
93 st = Statement("batch", Token("TRIANGLE_STRIP"))
94 for i in range(0, len(s), 32):
95 st.sub.append(Statement("indices", *(v.index for v in s[i:i+32])))
98 st = Statement("batch", Token('TRIANGLES'))
100 st.sub.append(Statement("indices", *(v.index for v in f.vertices)))
101 statements.append(st)
104 st = Statement("batch", Token('LINES'))
106 st.sub.append(Statement("indices", *(v.index for v in l.vertices)))
107 statements.append(st)
109 if mesh.winding_test:
110 statements.append(Statement("winding", Token('COUNTERCLOCKWISE')))
112 task.set_progress(1.0)