simvx.core.decal

Decal3D: projects textures onto surfaces within a box volume.

Module Contents

Classes

Decal3D

Projects a texture onto nearby geometry within a box-shaped volume.

Data

log

API

simvx.core.decal.log

‘getLogger(…)’

class simvx.core.decal.Decal3D(**kwargs)

Bases: simvx.core.nodes_3d.node3d.Node3D

Projects a texture onto nearby geometry within a box-shaped volume.

The decal projects along the node’s local -Y axis. The size property is the FULL extent of the projection box in local space (width, height, depth): a decal of size = Vec3(2, 1, 2) covers two units across and one unit deep, centred on the node. Only geometry within this box and matching the cull_mask receives the projected texture.

Properties: size: Full extents of the projection box (Vec3), centred on the node. texture: Path to the albedo/colour texture to project. normal_texture: Path to the normal-map texture to project. albedo_mix: Blend factor for the albedo texture (0 = invisible, 1 = full). normal_mix: Blend factor for the normal-map texture (0 = none, 1 = full). modulate: Colour tint applied to the projected texture (RGBA tuple). distance_fade_begin: Distance from camera at which the decal starts fading. distance_fade_length: Fade range: the decal is fully invisible at distance_fade_begin + distance_fade_length. cull_mask: Bitmask selecting which render layers receive the projection. upper_fade: Fade at the top (+Y) edge of the projection box (0 = hard, 1 = full fade). lower_fade: Fade at the bottom (-Y) edge of the projection box (0 = hard, 1 = full fade).

Example::

decal = Decal3D(position=(0, 2, 0), name="BloodSplat")
decal.texture = "res://textures/blood.png"
decal.size = Vec3(2, 1, 2)
decal.albedo_mix = 0.8

Initialization

size

‘Property(…)’

texture

‘Property(…)’

normal_texture

‘Property(…)’

albedo_mix

‘Property(…)’

normal_mix

‘Property(…)’

modulate

‘Colour(…)’

distance_fade_begin

‘Property(…)’

distance_fade_length

‘Property(…)’

cull_mask

‘Bitmask(…)’

upper_fade

‘Property(…)’

lower_fade

‘Property(…)’

gizmo_colour

‘Colour(…)’

property projection_direction: simvx.core.math.types.Vec3

World-space projection direction (local -Y axis).

set_cull_mask_layer(index: int, enabled: bool = True) → None

Enable or disable a specific cull mask layer (0-31).

is_cull_mask_layer_enabled(index: int) → bool

Check if a specific cull mask layer is enabled (0-31).

get_gizmo_lines() → list[tuple[simvx.core.math.types.Vec3, simvx.core.math.types.Vec3]]

Return wireframe edges of the projection box in world space.

The box is centred at the node’s global position, oriented by the node’s global rotation, and spans the full extents given by size. An additional arrow along the projection direction (-Y) is included.

position

‘_SpatialVecProperty(…)’

rotation

‘Property(…)’

scale

‘_SpatialVecProperty(…)’

render_layer

‘Property(…)’

property rotation_degrees: simvx.core.math.types.Vec3

property world_position: simvx.core.math.types.Vec3

property world_rotation: simvx.core.math.types.Quat

property world_scale: simvx.core.math.types.Vec3

property forward: simvx.core.math.types.Vec3

property right: simvx.core.math.types.Vec3

property up: simvx.core.math.types.Vec3

translate(offset: tuple[float, float, float] | numpy.ndarray)

translate_global(offset: tuple[float, float, float] | numpy.ndarray)

rotate(axis: tuple[float, float, float] | numpy.ndarray, angle: float)

rotate_x(angle: float)

rotate_y(angle: float)

rotate_z(angle: float)

look_at(target: tuple[float, float, float] | numpy.ndarray, up=None)

face_along(forward: tuple[float, float, float] | numpy.ndarray, up: tuple[float, float, float] | numpy.ndarray | None = None) → None

set_render_layer(index: int, enabled: bool = True) → None

is_on_render_layer(index: int) → bool

wrap_bounds(bounds: tuple[float, float, float] | numpy.ndarray, margin: float = 1.0)

strict_errors: ClassVar[bool]

True

dev_checks: ClassVar[bool]

None

script_error_raised

‘Signal(…)’

dynamic: bool

False

visible

‘Property(…)’

update_mode

‘Property(…)’

__properties__: ClassVar[dict[str, simvx.core.descriptors.Property]]

None

classmethod __init_subclass__(**kwargs)

property name: str

property visible_in_tree: bool

reset_error() → None

add_child(node: simvx.core.node.T) → simvx.core.node.T

remove_child(node: simvx.core.node.Node) → None

reparent(new_parent: simvx.core.node.Node)

node_at(path, default=_NO_DEFAULT)

find(target, *, direct: bool = False)

find_all(target, *, direct: bool = False)

expect(target, *, direct: bool = False)

ancestor(target)

walk(*, include_self: bool = True) → collections.abc.Iterator[simvx.core.node.Node]

property path: str

property is_scene_root: bool

add_to_group(group: str)

remove_from_group(group: str)

is_in_group(group: str) → bool

on_ready() → None

on_enter_tree() → None

on_exit_tree() → None

on_update(dt: float) → None

on_fixed_update(dt: float) → None

on_draw(renderer) → None

on_picked(event: simvx.core.events.InputEvent) → None

on_unhandled_input(event: simvx.core.events.TreeInputEvent) → None

start_coroutine(gen: simvx.core.descriptors.Coroutine) → simvx.core.descriptors.CoroutineHandle

stop_coroutine(gen_or_handle)

queue_redraw() → None

property render_dirty: bool

clear_children()

destroy()

property destroying: bool

call_deferred(method: collections.abc.Callable[..., Any], *args: Any) → None

property app

property tree: simvx.core.scene_tree.SceneTree

property physics

property physics_2d

__getitem__(key: str)

classmethod get_properties() → dict[str, simvx.core.descriptors.Property]

__repr__()