7 def export_mesh(self, ctx, mesh_or_obj):
8 from .mesh import Mesh, create_mesh_from_object
10 if type(mesh_or_obj)==Mesh:
13 task = ctx.task("Preparing mesh", 0.9)
14 mesh = create_mesh_from_object(task, mesh_or_obj)
16 from .datafile import Resource, Statement, Token
17 resource = Resource(mesh.name+".mesh", "mesh")
18 statements = resource.statements
20 task = ctx.task("Creating statements", 1.0)
22 st = Statement("vertices", Token("VERTEX3_FLOAT"))
24 if mesh.vertices[0].color:
25 st.append(Token("COLOR4_UBYTE"))
28 for u in mesh.uv_layers:
30 min_val = min(*u.uvs[0])
31 max_val = max(*u.uvs[1])
33 min_val = min(min_val, *c)
34 max_val = max(max_val, *c)
35 uv_type = "USHORT" if min_val>=0.0 and max_val<=1.0 else "FLOAT"
36 if uv_type=="FLOAT" and stride%4:
38 st.append(Token("PADDING{}".format(pad)))
41 st.append(Token("TEXCOORD{}_{}".format(size, uv_type)))
43 st.append(Token("TEXCOORD{}_{}_{}".format(size, u.unit, uv_type)))
44 stride += (2 if uv_type=="USHORT" else 4)*size
45 if mesh.vertex_groups:
46 st.append(Token("WEIGHT{}_USHORT".format(mesh.max_groups_per_vertex)))
47 st.append(Token("GROUP{}_UBYTE".format(mesh.max_groups_per_vertex)))
48 stride += 3*mesh.max_groups_per_vertex
49 st.append(Token("NORMAL3_BYTE"))
51 if mesh.uv_layers and mesh.tangent_vecs:
52 st.append(Token("TANGENT3_BYTE"))
56 st.append(Token("PADDING{}_UBYTE".format(pad)))
61 uvs = [None]*len(mesh.uv_layers)
65 for v in mesh.vertices:
67 st.sub.append(Statement("normal", *v.normal))
70 st.sub.append(Statement("color", *v.color))
72 for i, u in enumerate(mesh.uv_layers):
75 st.sub.append(Statement("texcoord", *v.uvs[i]))
77 st.sub.append(Statement("multitexcoord", u.unit, *v.uvs[i]))
81 st.sub.append(Statement("tangent", *v.tan))
83 if mesh.vertex_groups:
84 v_group = [g.group for g in v.groups]
85 v_weight = [g.weight for g in v.groups]
87 st.sub.append(Statement("group", *v_group))
90 st.sub.append(Statement("weight", *v_weight))
92 st.sub.append(Statement("vertex", *v.co))
97 for s in mesh.vertex_sequence:
98 st = Statement("batch", Token("TRIANGLE_STRIP"))
99 for i in range(0, len(s), 32):
100 st.sub.append(Statement("indices", *(v.index for v in s[i:i+32])))
101 statements.append(st)
103 st = Statement("batch", Token('TRIANGLES'))
105 st.sub.append(Statement("indices", *(v.index for v in f.vertices)))
106 statements.append(st)
109 st = Statement("batch", Token('LINES'))
111 st.sub.append(Statement("indices", *(v.index for v in l.vertices)))
112 statements.append(st)
114 if mesh.winding_test:
115 statements.append(Statement("winding", Token('COUNTERCLOCKWISE')))
117 task.set_progress(1.0)