export_x3d.py

        sky_triple = clamp_color(world.zenith_color)
        mix_triple = clamp_color((grd_triple[i] + sky_triple[i]) / 2.0 for i in range(3))

        ident_step = ident + (' ' * (-len(ident) + \
        fw('%s<Background ' % ident)))
        fw('DEF="%s"\n' % secureName(worldname))
        # No Skytype - just Hor color
        if blending == (False, False, False):
            fw(ident_step + 'groundColor="%.3g %.3g %.3g"\n' % grd_triple)
            fw(ident_step + 'skyColor="%.3g %.3g %.3g"\n' % grd_triple)
        # Blend Gradient
        elif blending == (True, False, False):
            fw(ident_step + 'groundColor="%.3g %.3g %.3g, %.3g %.3g %.3g"\n' % (grd_triple + mix_triple))
            fw(ident_step + 'groundAngle="1.57, 1.57"\n')
            fw(ident_step + 'skyColor="%.3g %.3g %.3g, %.3g %.3g %.3g"\n' % (sky_triple + mix_triple))
            fw(ident_step + 'skyAngle="1.57, 1.57"\n')
        # Blend+Real Gradient Inverse
        elif blending == (True, False, True):
            fw(ident_step + 'groundColor="%.3g %.3g %.3g, %.3g %.3g %.3g"\n' % (sky_triple + grd_triple))
            fw(ident_step + 'groundAngle="1.57"\n')
            fw(ident_step + 'skyColor="%.3g %.3g %.3g, %.3g %.3g %.3g, %.3g %.3g %.3g"\n' % (sky_triple + grd_triple + sky_triple))
            fw(ident_step + 'skyAngle="1.57, 3.14159"\n')
        # Paper - just Zen Color
        elif blending == (False, False, True):
            fw(ident_step + 'groundColor="%.3g %.3g %.3g"\n' % sky_triple)
            fw(ident_step + 'skyColor="%.3g %.3g %.3g"\n' % sky_triple)
        # Blend+Real+Paper - komplex gradient
        elif blending == (True, True, True):
            fw(ident_step + 'groundColor="%.3g %.3g %.3g, %.3g %.3g %.3g"\n' % (sky_triple + grd_triple))
            fw(ident_step + 'groundAngle="1.57, 1.57"\n')
            fw(ident_step + 'skyColor="%.3g %.3g %.3g, %.3g %.3g %.3g"\n' % (sky_triple + grd_triple))
            fw(ident_step + 'skyAngle="1.57, 1.57"\n')
        # Any Other two colors
        else:
            fw(ident_step + 'groundColor="%.3g %.3g %.3g"\n' % grd_triple)
            fw(ident_step + 'skyColor="%.3g %.3g %.3g"\n' % sky_triple)

        for tex in bpy.data.textures:
            if tex.type == 'IMAGE' and tex.image:
                namemat = tex.name
                pic = tex.image
                basename = os.path.basename(bpy.path.abspath(pic.filepath))

                if namemat == 'back':
                    fw(ident_step + 'backUrl="%s"\n' % basename)
                elif namemat == 'bottom':
                    fw(ident_step + 'bottomUrl="%s"\n' % basename)
                elif namemat == 'front':
                    fw(ident_step + 'frontUrl="%s"\n' % basename)
                elif namemat == 'left':
                    fw(ident_step + 'leftUrl="%s"\n' % basename)
                elif namemat == 'right':
                    fw(ident_step + 'rightUrl="%s"\n' % basename)
                elif namemat == 'top':
                    fw(ident_step + 'topUrl="%s"\n' % basename)

        fw(ident_step + '/>\n')

##########################################################
# export routine
##########################################################
    def export_main():
        world = scene.world

        # tag un-exported IDs
        bpy.data.meshes.tag(False)
        bpy.data.materials.tag(False)
        bpy.data.images.tag(False)

        print('Info: starting X3D export to %r...' % file.name)
        ident = ''
        ident = writeHeader(ident)

        writeNavigationInfo(ident, scene)
        writeBackground(ident, world)
        writeFog(ident, world)

        ident = '\t\t'

        if use_selection:
            objects = (obj for obj in scene.objects if obj.is_visible(scene) and o.select)
        else:
            objects = (obj for obj in scene.objects if obj.is_visible(scene))

        for obj_main in objects:

            free, derived = create_derived_objects(scene, obj_main)

            if derived is None:
                continue

            for obj, obj_matrix in derived:
                obj_type = obj.type
                obj_matrix = global_matrix * obj_matrix

                if obj_type == 'CAMERA':
                    writeViewpoint(ident, obj, obj_matrix, scene)
                elif obj_type in ('MESH', 'CURVE', 'SURF', 'FONT'):
                    if (obj_type != 'MESH') or (use_apply_modifiers and obj.is_modified(scene, 'PREVIEW')):
                        try:
                            me = obj.to_mesh(scene, use_apply_modifiers, 'PREVIEW')
                        except:
                            me = None
                    else:
                        me = obj.data

                    if me is not None:
                        writeIndexedFaceSet(ident, obj, me, obj_matrix, world)

                        # free mesh created with create_mesh()
                        if me != obj.data:
                            bpy.data.meshes.remove(me)

                elif obj_type == 'LAMP':
                    data = obj.data
                    datatype = data.type
                    if datatype == 'POINT':
                        writePointLight(ident, obj, obj_matrix, data, world)
                    elif datatype == 'SPOT':
                        writeSpotLight(ident, obj, obj_matrix, data, world)
                    elif datatype == 'SUN':
                        writeDirectionalLight(ident, obj, obj_matrix, data, world)
                    else:
                        writeDirectionalLight(ident, obj, obj_matrix, data, world)
                else:
                    #print "Info: Ignoring [%s], object type [%s] not handle yet" % (object.name,object.getType)
                    pass

            if free:
                free_derived_objects(obj_main)

        ident = writeFooter(ident)

    export_main()
    file.close()

    # -------------------------------------------------------------------------
    # global cleanup
    # -------------------------------------------------------------------------
    if use_h3d:
        bpy.data.materials.remove(gpu_shader_dummy_mat)

    print('Info: finished X3D export to %r' % file.name)


##########################################################
# Callbacks, needed before Main
##########################################################


def save(operator, context, filepath="",
         use_selection=True,
         use_apply_modifiers=False,
         use_triangulate=False,
         use_normals=False,
         use_compress=False,
         use_h3d=False,
         global_matrix=None,
         ):

    py.path.ensure_ext(filepath, '.x3dz' if use_compress else '.x3d')

    if bpy.ops.object.mode_set.poll():
        bpy.ops.object.mode_set(mode='OBJECT')

    file = None
    if use_compress:
        try:
            import gzip
            file = gzip.open(filepath, 'w')
        except:
            print('failed to import compression modules, exporting uncompressed')
            filepath = filepath[:-1]  # remove trailing z

    if file is None:
        file = open(filepath, 'w')

    if global_matrix is None:
        global_matrix = mathutils.Matrix()

    export(file,
           global_matrix,
           context.scene,
           use_apply_modifiers=use_apply_modifiers,
           use_selection=use_selection,
           use_triangulate=use_triangulate,
           use_normals=use_normals,
           use_h3d=use_h3d,
           )

    return {'FINISHED'}