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import bpy
from bpy.types import Operator
from bpy.props import StringProperty
from bpy_extras.io_utils import ExportHelper
def mesh_triangulate(me):
import bmesh
bm = bmesh.new()
bm.from_mesh(me)
bmesh.ops.triangulate(bm, faces=bm.faces)
bm.to_mesh(me)
bm.free()
class ExportWidget(Operator, ExportHelper):
"""Export a widget mesh as a C file"""
bl_idname = "export_scene.widget"
bl_label = "Export Widget"
bl_options = {'PRESET', 'UNDO'}
filename_ext = ".c"
filter_glob = StringProperty(
default="*.c;",
options={'HIDDEN'},
)
@classmethod
def poll(cls, context):
obj = context.active_object
return (obj and obj.type == 'MESH')
def execute(self, context):
ob = context.active_object
scene = context.scene
try:
me = ob.to_mesh(scene, True, 'PREVIEW', calc_tessface=False)
except RuntimeError:
me = None
if me is None:
return {'CANCELLED'}
mesh_triangulate(me)
name = ob.name
f = open(self.filepath, 'w')
f.write("int _WIDGET_nverts_%s = %d;\n" % (name, len(me.vertices)))
f.write("int _WIDGET_ntris_%s = %d;\n\n" % (name, len(me.polygons)))
f.write("float _WIDGET_verts_%s[][3] = {\n" % name)
for v in me.vertices:
f.write(" {%.6f, %.6f, %.6f},\n" % v.co[:])
f.write("};\n\n")
f.write("float _WIDGET_normals_%s[][3] = {\n" % name)
for v in me.vertices:
f.write(" {%.6f, %.6f, %.6f},\n" % v.normal[:])
f.write("};\n\n")
f.write("unsigned short _WIDGET_indices_%s[] = {\n" % name)
for p in me.polygons:
f.write(" %d, %d, %d,\n" % p.vertices[:])
f.write("};\n")
f.close()
return {'FINISHED'}
def menu_func_export(self, context):
self.layout.operator(ExportWidget.bl_idname, text="Widget (.c)")
def register():
bpy.utils.register_module(__name__)
bpy.types.INFO_MT_file_export.append(menu_func_export)
def unregister():
bpy.utils.unregister_module(__name__)
bpy.types.INFO_MT_file_export.remove(menu_func_export)
if __name__ == "__main__":
register()
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