Aspose.3D FOSS
Python
Light

Light

Methods: aspose.threed.entities (aspose-3d-foss)

Light adalah sebuah Entity yang menambahkan sumber cahaya ke adegan 3D. Seperti Camera, ia terpasang pada sebuah Node untuk mengontrol posisinya dan arahnya.

class Light(Camera):

Methods

A3DObject → SceneObject → Entity → Camera → Light

Light mewarisi dari Camera. Pada rilis saat ini, kelas Light itu sendiri tidak menampilkan properti tambahan selain yang diwarisi dari Camera dan Entity. Enum LightType ada untuk mengkategorikan cahaya tetapi tidak ada light_type properti pada Light kelas.

Methods 

Light(name: str = None)
NameTypeAccessDescription
namestrRead/WriteGets or sets the name.
parent_nodes``ReadGets the parent nodes.
excludedboolRead/WriteGets or sets the excluded.
parent_node``Read/WriteGets or sets the parent node.
rotation_mode``Read/WriteGets or sets the rotation mode.
near_planefloatRead/WriteGets or sets the near plane.
far_planefloatRead/WriteGets or sets the far plane.
aspectfloatRead/WriteGets or sets the aspect.
ortho_heightfloatRead/WriteGets or sets the ortho height.
up``Read/WriteGets or sets the up.
look_at``Read/WriteGets or sets the look at.
direction``Read/WriteGets or sets the direction.
target``Read/WriteGets or sets the target.
aperture_mode``Read/WriteGets or sets the aperture mode.
field_of_viewfloatRead/WriteGets or sets the field of view.
field_of_view_xfloatRead/WriteGets or sets the field of view x.
field_of_view_yfloatRead/WriteGets or sets the field of view y.
widthfloatRead/WriteGets or sets the width.
heightfloatRead/WriteGets or sets the height.
aspect_ratiofloatRead/WriteGets or sets the aspect ratio.
magnification``Read/WriteGets or sets the magnification.
projection_typestrRead/WriteGets or sets the projection type.
scene``Read/WriteGets or sets the scene.
propertiesPropertyCollectionReadGets the properties.

Methods

SignatureDescription
__init__(name: str, light_type)
move_forward(distance: float)
get_bounding_box()Returns the bounding box.
get_entity_renderer_key()Not implemented in the FOSS edition — throws at runtime. Returns the entity renderer key.
remove_property(property)
get_property(property: str)
set_property(property: str, value)Sets the property value.
find_property(property: str)

Light juga mewarisi semua Camera properti (near_plane, far_plane, dll.), meskipun ini tidak bermakna untuk objek cahaya. Catatan: the Light kelas tidak mengekspos sebuah light_type properti dalam permukaan API saat ini.

Nilai LightType 

from aspose.threed.entities import LightType
MethodsMethodsMethods
LightType.POINT"POINT"Memancarkan cahaya secara merata ke semua arah dari satu titik.
LightType.DIRECTIONAL"DIRECTIONAL"Sinar paralel dari sumber yang tak terhingga jauhnya (seperti sinar matahari).
LightType.SPOT"SPOT"Berbentuk kerucut; posisi dan arah penting.
LightType.AREA"AREA"Cahaya yang dipancarkan dari area persegi panjang.
LightType.VOLUME"VOLUME"Cahaya volumetrik/penerangan global.

Contoh Penggunaan

Point Light 

from aspose.threed import Scene, FileFormat
from aspose.threed.entities import Light, LightType

scene = Scene()

light = Light("PointLight")
node = scene.root_node.create_child_node("light", light)
node.transform.set_translation(0.0, 10.0, 0.0)

scene.save("lit-scene.glb", FileFormat.GLTF)

Directional Light 

from aspose.threed import Scene
from aspose.threed.entities import Light, LightType

scene = Scene()

sun = Light("Sun")
node = scene.root_node.create_child_node("sun", sun)
# Direction is controlled by the node's rotation
node.transform.set_euler_angles(-45.0, 30.0, 0.0)  # degrees

scene.save("directional-light.glb")

Tambahkan Kedua Camera dan Light 

from aspose.threed import Scene, FileFormat
from aspose.threed.entities import Camera, Light, LightType, ProjectionType

scene = Scene()

# Camera
cam = Camera("Cam", ProjectionType.PERSPECTIVE)
cam.field_of_view = 60.0
cam_node = scene.root_node.create_child_node("camera", cam)
cam_node.transform.set_translation(0.0, 5.0, 15.0)

# Directional light
light = Light("DirLight")
light_node = scene.root_node.create_child_node("light", light)
light_node.transform.set_euler_angles(-30.0, 45.0, 0.0)

scene.save("camera-and-light.glb", FileFormat.GLTF)

Enumerasi Light dalam Scene yang Diimpor 

from aspose.threed import Scene
from aspose.threed.entities import Light

scene = Scene()
scene.open("model.glb")

def find_lights(node, depth=0):
    if isinstance(node.entity, Light):
        print(f"{'  ' * depth}Light: {node.name}")
    for child in node.child_nodes:
        find_lights(child, depth + 1)

find_lights(scene.root_node)

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