# HookGpencilModifier(GpencilModifier)

base classes — `bpy_struct`, `GpencilModifier`

class `bpy.types.``HookGpencilModifier`(GpencilModifier)

  Hook modifier to modify the location of stroke points

  `center`

    Type: | float array of 3 items in [-inf, inf], default (0.0, 0.0, 0.0)

  `falloff_curve`

    Custom light falloff curve

    Type: | `CurveMapping`, (readonly)

  `falloff_radius`

    If not zero, the distance from the hook where influence ends

    Type: | float in [0, inf], default 0.0

  `falloff_type`

    Type: | enum in [‘NONE’, ‘CURVE’, ‘SMOOTH’, ‘SPHERE’, ‘ROOT’, ‘INVERSE_SQUARE’, ‘SHARP’, ‘LINEAR’, ‘CONSTANT’], default ‘NONE’

  `invert_layer_pass`

    Inverse filter

    Type: | boolean, default False

  `invert_layers`

    Inverse filter

    Type: | boolean, default False

  `invert_material_pass`

    Inverse filter

    Type: | boolean, default False

  `invert_materials`

    Inverse filter

    Type: | boolean, default False

  `invert_vertex`

    Inverse filter

    Type: | boolean, default False

  `layer`

    Layer name

    Type: | string, default “”, (never None)

  `layer_pass`

    Layer pass index

    Type: | int in [0, 100], default 0

  `material`

    Material name

    Type: | string, default “”, (never None)

  `matrix_inverse`

    Reverse the transformation between this object and its target

    Type: | float multi-dimensional array of 4 * 4 items in [-inf, inf], default ((0.0, 0.0, 0.0, 0.0), (0.0, 0.0, 0.0, 0.0), (0.0, 0.0, 0.0, 0.0), (0.0, 0.0, 0.0, 0.0))

  `object`

    Parent Object for hook, also recalculates and clears offset

    Type: | `Object`

  `pass_index`

    Pass index

    Type: | int in [0, 100], default 0

  `strength`

    Relative force of the hook

    Type: | float in [0, 1], default 0.0

  `subtarget`

    Name of Parent Bone for hook (if applicable), also recalculates and clears offset

    Type: | string, default “”, (never None)

  `use_falloff_uniform`

    Compensate for non-uniform object scale

    Type: | boolean, default False

  `vertex_group`

    Vertex group name for modulating the deform

    Type: | string, default “”, (never None)

  classmethod `bl_rna_get_subclass`(id, default=None)

    Parameters: | id (string) – The RNA type identifier.
    Returns: | The RNA type or default when not found.
    Return type: | `bpy.types.Struct` subclass

  classmethod `bl_rna_get_subclass_py`(id, default=None)

    Parameters: | id (string) – The RNA type identifier.
    Returns: | The class or default when not found.
    Return type: | type

Inherited Properties

`bpy_struct.id_data` `GpencilModifier.name` `GpencilModifier.type` `GpencilModifier.show_viewport` | `GpencilModifier.show_render` `GpencilModifier.show_in_editmode` `GpencilModifier.show_expanded`

Inherited Functions

`bpy_struct.as_pointer` `bpy_struct.driver_add` `bpy_struct.driver_remove` `bpy_struct.get` `bpy_struct.is_property_hidden` `bpy_struct.is_property_overridable_library` `bpy_struct.is_property_readonly` `bpy_struct.is_property_set` `bpy_struct.items` `bpy_struct.keyframe_delete` | `bpy_struct.keyframe_insert` `bpy_struct.keys` `bpy_struct.path_from_id` `bpy_struct.path_resolve` `bpy_struct.pop` `bpy_struct.property_overridable_library_set` `bpy_struct.property_unset` `bpy_struct.type_recast` `bpy_struct.values`