__init__.py

            name="Move Z",
            description="",
            min=-100000.0, max=100000.0, default=0.0)

    tex_scale_x: FloatProperty(
            name="Scale X",
            description="",
            min=0.0, max=10000.0, default=1.0)

    tex_scale_y: FloatProperty(
            name="Scale Y",
            description="",
            min=0.0, max=10000.0, default=1.0)

    tex_scale_z: FloatProperty(
            name="Scale Z",
            description="",
            min=0.0, max=10000.0, default=1.0)


###############################################################################
# Object POV properties.
###############################################################################

class RenderPovSettingsObject(PropertyGroup):
    # Pov inside_vector used for CSG
    inside_vector: FloatVectorProperty(
            name="CSG Inside Vector", description="Direction to shoot CSG inside test rays at",
            precision=4, step=0.01, min=0, soft_max=1,
            default=(0.001, 0.001, 0.5),
            options={'ANIMATABLE'},
            subtype='XYZ')

    # Importance sampling
    importance_value: FloatProperty(
            name="Radiosity Importance",
            description="Priority value relative to other objects for sampling radiosity rays. "
                        "Increase to get more radiosity rays at comparatively small yet "
                        "bright objects",
            min=0.01, max=1.00, default=0.50)

    # Collect photons
    collect_photons: BoolProperty(
            name="Receive Photon Caustics",
            description="Enable object to collect photons from other objects caustics. Turn "
                        "off for objects that don't really need to receive caustics (e.g. objects"
                        " that generate caustics often don't need to show any on themselves)",
            default=True)

    # Photons spacing_multiplier
    spacing_multiplier: FloatProperty(
            name="Photons Spacing Multiplier",
            description="Multiplier value relative to global spacing of photons. "
                        "Decrease by half to get 4x more photons at surface of "
                        "this object (or 8x media photons than specified in the globals",
            min=0.01, max=1.00, default=1.00)

    ##################################CustomPOV Code############################
    # Only DUMMIES below for now:
    replacement_text: StringProperty(
            name="Declared name:",
            description="Type the declared name in custom POV code or an external .inc "
                        "it points at. Any POV shape expected e.g: isosurface {}",
            default="")

    #############POV-Ray specific object properties.############################
    object_as: StringProperty(maxlen=1024)

    imported_loc: FloatVectorProperty(
        name="Imported Pov location",
        precision=6,
        default=(0.0, 0.0, 0.0))

    imported_loc_cap: FloatVectorProperty(
        name="Imported Pov location",
        precision=6,
        default=(0.0, 0.0, 2.0))

    unlock_parameters: BoolProperty(name="Lock",default = False)

    # not in UI yet but used for sor (lathe) / prism... pov primitives
    curveshape: EnumProperty(
            name="Povray Shape Type",
            items=(("birail", "Birail", ""),
                   ("cairo", "Cairo", ""),
                   ("lathe", "Lathe", ""),
                   ("loft", "Loft", ""),
                   ("prism", "Prism", ""),
                   ("sphere_sweep", "Sphere Sweep", "")),
            default="sphere_sweep")

    mesh_write_as: EnumProperty(
            name="Mesh Write As",
            items=(("blobgrid", "Blob Grid", ""),
                   ("grid", "Grid", ""),
                   ("mesh", "Mesh", "")),
            default="mesh")

    object_ior: FloatProperty(
            name="IOR", description="IOR",
            min=1.0, max=10.0,default=1.0)

    # shape_as_light = StringProperty(name="Light",maxlen=1024)
    # fake_caustics_power = FloatProperty(
            # name="Power", description="Fake caustics power",
            # min=0.0, max=10.0,default=0.0)
    # target = BoolProperty(name="Target",description="",default=False)
    # target_value = FloatProperty(
            # name="Value", description="",
            # min=0.0, max=1.0,default=1.0)
    # refraction = BoolProperty(name="Refraction",description="",default=False)
    # dispersion = BoolProperty(name="Dispersion",description="",default=False)
    # dispersion_value = FloatProperty(
            # name="Dispersion", description="Good values are 1.01 to 1.1. ",
            # min=1.0, max=1.2,default=1.01)
    # dispersion_samples = IntProperty(name="Samples",min=2, max=100,default=7)
    # reflection = BoolProperty(name="Reflection",description="",default=False)
    # pass_through = BoolProperty(name="Pass through",description="",default=False)
    no_shadow: BoolProperty(name="No Shadow",default=False)

    no_image: BoolProperty(name="No Image",default=False)

    no_reflection: BoolProperty(name="No Reflection",default=False)

    no_radiosity: BoolProperty(name="No Radiosity",default=False)

    inverse: BoolProperty(name="Inverse",default=False)

    sturm: BoolProperty(name="Sturm",default=False)

    double_illuminate: BoolProperty(name="Double Illuminate",default=False)

    hierarchy: BoolProperty(name="Hierarchy",default=False)

    hollow: BoolProperty(name="Hollow",default=False)

    boundorclip: EnumProperty(
            name="Boundorclip",
            items=(("none", "None", ""),
                   ("bounded_by", "Bounded_by", ""),
                   ("clipped_by", "Clipped_by", "")),
            default="none")
    boundorclipob: StringProperty(maxlen=1024)

    addboundorclip: BoolProperty(description="",default=False)

    blob_threshold: FloatProperty(name="Threshold",min=0.00, max=10.0, default=0.6)

    blob_strength: FloatProperty(name="Strength",min=-10.00, max=10.0, default=1.00)

    res_u: IntProperty(name="U",min=100, max=1000, default=500)

    res_v: IntProperty(name="V",min=100, max=1000, default=500)

    contained_by: EnumProperty(
            name="Contained by",
            items=(("box", "Box", ""),
                   ("sphere", "Sphere", "")),
            default="box")

    container_scale: FloatProperty(name="Container Scale",min=0.0, max=10.0, default=1.00)

    threshold: FloatProperty(name="Threshold",min=0.0, max=10.0, default=0.00)

    accuracy: FloatProperty(name="Accuracy",min=0.0001, max=0.1, default=0.001)

    max_gradient: FloatProperty(name="Max Gradient",min=0.0, max=100.0, default=5.0)

    all_intersections: BoolProperty(name="All Intersections",default=False)

    max_trace: IntProperty(name="Max Trace",min=1, max=100,default=1)


    def prop_update_cylinder(self, context):
        if bpy.ops.pov.cylinder_update.poll():
            bpy.ops.pov.cylinder_update()
    cylinder_radius: FloatProperty(name="Cylinder R",min=0.00, max=10.0, default=0.04, update=prop_update_cylinder)
    cylinder_location_cap: FloatVectorProperty(
            name="Cylinder Cap Location", subtype='TRANSLATION',
            description="The position of the 'other' end of the cylinder (relative to object location)",
            default=(0.0, 0.0, 2.0), update=prop_update_cylinder,
    )

    imported_cyl_loc: FloatVectorProperty(
        name="Imported Pov location",
        precision=6,
        default=(0.0, 0.0, 0.0))

    imported_cyl_loc_cap: FloatVectorProperty(
        name="Imported Pov location",
        precision=6,
        default=(0.0, 0.0, 2.0))

    def prop_update_sphere(self, context):
        bpy.ops.pov.sphere_update()
    sphere_radius: FloatProperty(name="Sphere radius",min=0.00, max=10.0, default=0.5, update=prop_update_sphere)


    def prop_update_cone(self, context):
        bpy.ops.pov.cone_update()

    cone_base_radius: FloatProperty(
        name = "Base radius", description = "The first radius of the cone",
        default = 1.0, min = 0.01, max = 100.0, update=prop_update_cone)
    cone_cap_radius: FloatProperty(
        name = "Cap radius", description = "The second radius of the cone",
        default = 0.3, min = 0.0, max = 100.0, update=prop_update_cone)

    cone_segments: IntProperty(
        name = "Segments", description = "Radial segmentation of proxy mesh",
        default = 16, min = 3, max = 265, update=prop_update_cone)

    cone_height: FloatProperty(
        name = "Height", description = "Height of the cone",
        default = 2.0, min = 0.01, max = 100.0, update=prop_update_cone)

    cone_base_z: FloatProperty()
    cone_cap_z: FloatProperty()

###########Parametric
    def prop_update_parametric(self, context):
        bpy.ops.pov.parametric_update()

    u_min: FloatProperty(name = "U Min",
                    description = "",
                    default = 0.0, update=prop_update_parametric)
    v_min: FloatProperty(name = "V Min",
                    description = "",
                    default = 0.0, update=prop_update_parametric)
    u_max: FloatProperty(name = "U Max",
                    description = "",
                    default = 6.28, update=prop_update_parametric)
    v_max: FloatProperty(name = "V Max",
                    description = "",
                    default = 12.57, update=prop_update_parametric)
    x_eq: StringProperty(
                    maxlen=1024, default = "cos(v)*(1+cos(u))*sin(v/8)", update=prop_update_parametric)
    y_eq: StringProperty(
                    maxlen=1024, default = "sin(u)*sin(v/8)+cos(v/8)*1.5", update=prop_update_parametric)
    z_eq: StringProperty(
                    maxlen=1024, default = "sin(v)*(1+cos(u))*sin(v/8)", update=prop_update_parametric)

###########Torus

    def prop_update_torus(self, context):
        bpy.ops.pov.torus_update()

    torus_major_segments: IntProperty(
                    name = "Segments", description = "Radial segmentation of proxy mesh",
                    default = 48, min = 3, max = 720, update=prop_update_torus)
    torus_minor_segments: IntProperty(
                    name = "Segments", description = "Cross-section segmentation of proxy mesh",
                    default = 12, min = 3, max = 720, update=prop_update_torus)
    torus_major_radius: FloatProperty(
                    name="Major radius",
                    description="Major radius",
                    min=0.00, max=100.00, default=1.0, update=prop_update_torus)
    torus_minor_radius: FloatProperty(
                    name="Minor radius",
                    description="Minor radius",
                    min=0.00, max=100.00, default=0.25, update=prop_update_torus)


###########Rainbow
    arc_angle: FloatProperty(name = "Arc angle",
                      description = "The angle of the raynbow arc in degrees",
                      default = 360, min = 0.01, max = 360.0)
    falloff_angle: FloatProperty(name = "Falloff angle",
                      description = "The angle after which rainbow dissolves into background",
                      default = 360, min = 0.0, max = 360)

###########HeightFields

    quality: IntProperty(name = "Quality",
                      description = "",
                      default = 100, min = 1, max = 100)

    hf_filename: StringProperty(maxlen = 1024)

    hf_gamma: FloatProperty(
            name="Gamma",
            description="Gamma",
            min=0.0001, max=20.0, default=1.0)

    hf_premultiplied: BoolProperty(
            name="Premultiplied",
            description="Premultiplied",
            default=True)

    hf_smooth: BoolProperty(
            name="Smooth",
            description="Smooth",
            default=False)

    hf_water: FloatProperty(
            name="Water Level",
            description="Wather Level",
            min=0.00, max=1.00, default=0.0)

    hf_hierarchy: BoolProperty(
            name="Hierarchy",
            description="Height field hierarchy",
            default=True)

##############Superellipsoid
    def prop_update_superellipsoid(self, context):
        bpy.ops.pov.superellipsoid_update()

    se_param1: FloatProperty(
            name="Parameter 1",
            description="",
            min=0.00, max=10.0, default=0.04)

    se_param2: FloatProperty(
            name="Parameter 2",
            description="",
            min=0.00, max=10.0, default=0.04)

    se_u: IntProperty(name = "U-segments",
                    description = "radial segmentation",
                    default = 20, min = 4, max = 265,
                    update=prop_update_superellipsoid)
    se_v: IntProperty(name = "V-segments",
                    description = "lateral segmentation",
                    default = 20, min = 4, max = 265,
                    update=prop_update_superellipsoid)
    se_n1: FloatProperty(name = "Ring manipulator",
                    description = "Manipulates the shape of the Ring",
                    default = 1.0, min = 0.01, max = 100.0,
                    update=prop_update_superellipsoid)
    se_n2: FloatProperty(name = "Cross manipulator",
                    description = "Manipulates the shape of the cross-section",
                    default = 1.0, min = 0.01, max = 100.0,
                    update=prop_update_superellipsoid)
    se_edit: EnumProperty(items=[("NOTHING", "Nothing", ""),
                                ("NGONS", "N-Gons", ""),
                                ("TRIANGLES", "Triangles", "")],
                    name="Fill up and down",
                    description="",
                    default='TRIANGLES',
                    update=prop_update_superellipsoid)
#############Used for loft and Superellipsoid, etc.
    curveshape: EnumProperty(
            name="Povray Shape Type",
            items=(("birail", "Birail", ""),
                   ("cairo", "Cairo", ""),
                   ("lathe", "Lathe", ""),
                   ("loft", "Loft", ""),
                   ("prism", "Prism", ""),
                   ("sphere_sweep", "Sphere Sweep", ""),
                   ("sor", "Surface of Revolution", "")),
            default="sphere_sweep")

#############Supertorus
    def prop_update_supertorus(self, context):
        bpy.ops.pov.supertorus_update()

    st_major_radius: FloatProperty(
            name="Major radius",
            description="Major radius",
            min=0.00, max=100.00, default=1.0,
            update=prop_update_supertorus)

    st_minor_radius: FloatProperty(
            name="Minor radius",
            description="Minor radius",
            min=0.00, max=100.00, default=0.25,
            update=prop_update_supertorus)

    st_ring: FloatProperty(
            name="Ring",
            description="Ring manipulator",
            min=0.0001, max=100.00, default=1.00,
            update=prop_update_supertorus)

    st_cross: FloatProperty(
            name="Cross",
            description="Cross manipulator",
            min=0.0001, max=100.00, default=1.00,
            update=prop_update_supertorus)

    st_accuracy: FloatProperty(
            name="Accuracy",
            description="Supertorus accuracy",
            min=0.00001, max=1.00, default=0.001)

    st_max_gradient: FloatProperty(
            name="Gradient",
            description="Max gradient",
            min=0.0001, max=100.00, default=10.00,
            update=prop_update_supertorus)

    st_R: FloatProperty(name = "big radius",
                      description = "The radius inside the tube",
                      default = 1.0, min = 0.01, max = 100.0,
                      update=prop_update_supertorus)
    st_r: FloatProperty(name = "small radius",
                      description = "The radius of the tube",
                      default = 0.3, min = 0.01, max = 100.0,
                      update=prop_update_supertorus)
    st_u: IntProperty(name = "U-segments",
                    description = "radial segmentation",
                    default = 16, min = 3, max = 265,
                    update=prop_update_supertorus)
    st_v: IntProperty(name = "V-segments",
                    description = "lateral segmentation",
                    default = 8, min = 3, max = 265,
                    update=prop_update_supertorus)
    st_n1: FloatProperty(name = "Ring manipulator",
                      description = "Manipulates the shape of the Ring",
                      default = 1.0, min = 0.01, max = 100.0,
                      update=prop_update_supertorus)
    st_n2: FloatProperty(name = "Cross manipulator",
                      description = "Manipulates the shape of the cross-section",
                      default = 1.0, min = 0.01, max = 100.0,
                      update=prop_update_supertorus)
    st_ie: BoolProperty(name = "Use Int.+Ext. radii",
                      description = "Use internal and external radii",
                      default = False,
                      update=prop_update_supertorus)
    st_edit: BoolProperty(name="",
                        description="",
                        default=False,
                        options={'HIDDEN'},
                        update=prop_update_supertorus)

########################Loft
    loft_n: IntProperty(name = "Segments",
                    description = "Vertical segments",
                    default = 16, min = 3, max = 720)
    loft_rings_bottom: IntProperty(name = "Bottom",
                    description = "Bottom rings",
                    default = 5, min = 2, max = 100)
    loft_rings_side: IntProperty(name = "Side",
                    description = "Side rings",
                    default = 10, min = 2, max = 100)
    loft_thick: FloatProperty(name = "Thickness",
                      description = "Manipulates the shape of the Ring",
                      default = 0.3, min = 0.01, max = 1.0)
    loft_r: FloatProperty(name = "Radius",
                      description = "Radius",
                      default = 1, min = 0.01, max = 10)
    loft_height: FloatProperty(name = "Height",
                      description = "Manipulates the shape of the Ring",
                      default = 2, min = 0.01, max = 10.0)

###################Prism
    prism_n: IntProperty(name = "Sides",
                    description = "Number of sides",
                    default = 5, min = 3, max = 720)
    prism_r: FloatProperty(name = "Radius",
                    description = "Radius",
                    default = 1.0)

##################Isosurface
    iso_function_text: StringProperty(name="Function Text",maxlen=1024)#,update=iso_props_update_callback)

##################PolygonToCircle
    polytocircle_resolution: IntProperty(name = "Resolution",
                    description = "",
                    default = 3, min = 0, max = 256)
    polytocircle_ngon: IntProperty(name = "NGon",
                    description = "",
                    min = 3, max = 64,default = 5)
    polytocircle_ngonR: FloatProperty(name = "NGon Radius",
                    description = "",
                    default = 0.3)
    polytocircle_circleR: FloatProperty(name = "Circle Radius",
                    description = "",
                    default = 1.0)


###############################################################################
# Modifiers POV properties.
###############################################################################
#class RenderPovSettingsModifier(PropertyGroup):
    boolean_mod: EnumProperty(
            name="Operation",
            description="Choose the type of calculation for Boolean modifier",
            items=(("BMESH", "Use the BMesh Boolean Solver", ""),
                   ("CARVE", "Use the Carve Boolean Solver", ""),
                   ("POV", "Use Pov-Ray Constructive Solid Geometry", "")),
            default="BMESH")

#################Avogadro
    # filename_ext = ".png"

    # filter_glob = StringProperty(
            # default="*.exr;*.gif;*.hdr;*.iff;*.jpeg;*.jpg;*.pgm;*.png;*.pot;*.ppm;*.sys;*.tga;*.tiff;*.EXR;*.GIF;*.HDR;*.IFF;*.JPEG;*.JPG;*.PGM;*.PNG;*.POT;*.PPM;*.SYS;*.TGA;*.TIFF",
            # options={'HIDDEN'},
            # )

###############################################################################
# Camera POV properties.
###############################################################################
class RenderPovSettingsCamera(PropertyGroup):
    #DOF Toggle
    dof_enable: BoolProperty(
            name="Depth Of Field", description="EnablePOV-Ray Depth Of Field ",
            default=False)

    # Aperture (Intensity of the Blur)
    dof_aperture: FloatProperty(
            name="Aperture",
            description="Similar to a real camera's aperture effect over focal blur (though not "
                        "in physical units and independent of focal length). "
                        "Increase to get more blur",
            min=0.01, max=1.00, default=0.50)

    # Aperture adaptive sampling
    dof_samples_min: IntProperty(
            name="Samples Min", description="Minimum number of rays to use for each pixel",
            min=1, max=128, default=3)

    dof_samples_max: IntProperty(
            name="Samples Max", description="Maximum number of rays to use for each pixel",
            min=1, max=128, default=9)

    dof_variance: IntProperty(
            name="Variance",
            description="Minimum threshold (fractional value) for adaptive DOF sampling (up "
                        "increases quality and render time). The value for the variance should "
                        "be in the range of the smallest displayable color difference",
            min=1, max=100000, soft_max=10000, default=8192)

    dof_confidence: FloatProperty(
            name="Confidence",
            description="Probability to reach the real color value. Larger confidence values "
                        "will lead to more samples, slower traces and better images",
            min=0.01, max=0.99, default=0.20)

    normal_enable: BoolProperty(name="Perturbated Camera", default=False)
    cam_normal: FloatProperty(name="Normal Strength", min=0.0, max=1.0, default=0.0)
    normal_patterns: EnumProperty(
            name="Pattern",
            description="",
            items=(('agate', "Agate", ""), ('boxed', "Boxed", ""), ('bumps', "Bumps", ""), ('cells', "Cells", ""),
                   ('crackle', "Crackle", ""),('dents', "Dents", ""),
                   ('granite', "Granite", ""),
                   ('leopard', "Leopard", ""),
                   ('marble', "Marble", ""), ('onion', "Onion", ""), ('pavement', "Pavement", ""), ('planar', "Planar", ""),
                   ('quilted', "Quilted", ""), ('ripples', "Ripples", ""),  ('radial', "Radial", ""),
                   ('spherical', "Spherical", ""),('spiral1', "Spiral1", ""), ('spiral2', "Spiral2", ""), ('spotted', "Spotted", ""),
                   ('square', "Square", ""),('tiling', "Tiling", ""),
                   ('waves', "Waves", ""), ('wood', "Wood", ""),('wrinkles', "Wrinkles", "")),
            default='agate')
    turbulence: FloatProperty(name="Turbulence", min=0.0, max=100.0, default=0.1)
    scale: FloatProperty(name="Scale", min=0.0,default=1.0)

    ##################################CustomPOV Code############################
    # Only DUMMIES below for now:
    replacement_text: StringProperty(
            name="Texts in blend file",
            description="Type the declared name in custom POV code or an external .inc "
                        "it points at. camera {} expected",
            default="")

###############################################################################
# World POV properties.
###############################################################################
class RenderPovSettingsWorld(PropertyGroup):
    use_sky_blend: BoolProperty(
            name="Blend Sky", description="Render background with natural progression from horizon to zenith",
            default=False)
    use_sky_paper: BoolProperty(
            name="Paper Sky", description="Flatten blend or texture coordinates",
            default=False)
    use_sky_real: BoolProperty(
            name="Real Sky", description="Render background with a real horizon, relative to the camera angle",
            default=False)
            
    horizon_color: FloatVectorProperty(
            name="Horizon Color",
            description="Color at the horizon",
            precision=4, step=0.01, min=0, soft_max=1,
            default=(0.0, 0.0, 0.0), options={'ANIMATABLE'}, subtype='COLOR',
    )
    zenith_color: FloatVectorProperty(
            name="Zenith Color",
            description="Color at the zenith",
            precision=4, step=0.01, min=0, soft_max=1,
            default=(0.0, 0.0, 0.0), options={'ANIMATABLE'}, subtype='COLOR',
    )
    ambient_color: FloatVectorProperty(
            name="Ambient Color",
            description="Ambient color of the world",
            precision=4, step=0.01, min=0, soft_max=1,
            default=(0.0, 0.0, 0.0), options={'ANIMATABLE'}, subtype='COLOR',
    )

###############################################################################
# Text POV properties.
###############################################################################
class RenderPovSettingsText(PropertyGroup):
    custom_code: EnumProperty(
            name="Custom Code",
            description="rendered source: Both adds text at the "
                        "top of the exported POV-Ray file",
            items=(("3dview", "View", ""),
                   ("text", "Text", ""),
                   ("both", "Both", "")),
            default="text")

###############################################################################
# Povray Preferences.
###############################################################################
class PovrayPreferences(AddonPreferences):
    bl_idname = __name__

    branch_feature_set_povray: EnumProperty(
                name="Feature Set",
                description="Choose between official (POV-Ray) or (UberPOV) "
                            "development branch features to write in the pov file",
                items= (('povray', 'Official POV-Ray', '','PLUGIN', 0),
                        ('uberpov', 'Unofficial UberPOV', '', 'PLUGIN', 1)),
                default='povray'
                )

    filepath_povray: StringProperty(
                name="Binary Location",
                description="Path to renderer executable",
                subtype='FILE_PATH',
                )
    docpath_povray: StringProperty(
                name="Includes Location",
                description="Path to Insert Menu files",
                subtype='FILE_PATH',
                )
    def draw(self, context):
        layout = self.layout
        layout.prop(self, "branch_feature_set_povray")
        layout.prop(self, "filepath_povray")
        layout.prop(self, "docpath_povray")


classes = (
    PovrayPreferences,
    RenderPovSettingsCamera,
    RenderPovSettingsWorld,
    RenderPovSettingsMaterial,
    MaterialRaytraceMirror, 
    MaterialSubsurfaceScattering,
    RenderPovSettingsObject,
    RenderPovSettingsScene,
    RenderPovSettingsText,
    RenderPovSettingsTexture,
)


def register():

    #bpy.utils.register_module(__name__) #DEPRECATED Now imported from bpy.utils import register_class

    for cls in classes:
        register_class(cls)
 
    render.register()
    ui.register()
    primitives.register()
    nodes.register()

    '''    
        bpy.types.VIEW3D_MT_add.prepend(ui.menu_func_add)
        bpy.types.TOPBAR_MT_file_import.append(ui.menu_func_import)
        bpy.types.TEXT_MT_templates.append(ui.menu_func_templates)
        bpy.types.RENDER_PT_povray_radiosity.prepend(ui.rad_panel_func)
        bpy.types.LIGHT_PT_POV_light.prepend(ui.light_panel_func)
        bpy.types.WORLD_PT_world.prepend(ui.world_panel_func)
        # was used for parametric objects but made the other addon unreachable on
        # unregister for other tools to use created a user action call instead
        #addon_utils.enable("add_mesh_extra_objects", default_set=False, persistent=True)

        #bpy.types.TEXTURE_PT_context_texture.prepend(TEXTURE_PT_povray_type)
    '''
    bpy.types.NODE_HT_header.append(ui.menu_func_nodes)
    nodeitems_utils.register_node_categories("POVRAYNODES", node_categories)
    bpy.types.Scene.pov = PointerProperty(type=RenderPovSettingsScene)
    #bpy.types.Modifier.pov = PointerProperty(type=RenderPovSettingsModifier)
    bpy.types.Material.pov = PointerProperty(type=RenderPovSettingsMaterial)
    bpy.types.Material.pov_subsurface_scattering = PointerProperty(type=MaterialSubsurfaceScattering)
    bpy.types.Material.pov_raytrace_mirror = PointerProperty(type=MaterialRaytraceMirror)
    bpy.types.Texture.pov = PointerProperty(type=RenderPovSettingsTexture)
    bpy.types.Object.pov = PointerProperty(type=RenderPovSettingsObject)
    bpy.types.Camera.pov = PointerProperty(type=RenderPovSettingsCamera)
    bpy.types.World.pov = PointerProperty(type=RenderPovSettingsWorld)
    bpy.types.Text.pov = PointerProperty(type=RenderPovSettingsText)



def unregister():
    del bpy.types.Scene.pov
    del bpy.types.Material.pov
    del bpy.types.Material.pov_subsurface_scattering
    #del bpy.types.Modifier.pov
    del bpy.types.Texture.pov
    del bpy.types.Object.pov
    del bpy.types.Camera.pov
    del bpy.types.World.pov    
    del bpy.types.Text.pov
    nodeitems_utils.unregister_node_categories("POVRAYNODES")
    bpy.types.NODE_HT_header.remove(ui.menu_func_nodes)
    '''
    #bpy.types.TEXTURE_PT_context_texture.remove(TEXTURE_PT_povray_type)
    #addon_utils.disable("add_mesh_extra_objects", default_set=False)
    bpy.types.WORLD_PT_POV_world.remove(ui.world_panel_func)
    bpy.types.LIGHT_PT_POV_light.remove(ui.light_panel_func)
    bpy.types.RENDER_PT_povray_radiosity.remove(ui.rad_panel_func)
    bpy.types.TEXT_MT_templates.remove(ui.menu_func_templates)
    bpy.types.TOPBAR_MT_file_import.remove(ui.menu_func_import)
    bpy.types.VIEW3D_MT_add.remove(ui.menu_func_add)
    '''
    #bpy.utils.unregister_module(__name__)

    nodes.unregister()
    primitives.unregister()
    ui.unregister()
    render.unregister()

    for cls in reversed(classes):
        unregister_class(cls)
 


if __name__ == "__main__":
    register()