Aspose.3D FOSS
Python
Light

Light

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

Light je Entity koji dodaje izvor svetlosti u 3D scenu. Kao Camera, on je pričvršćen na Node da kontroliše njegov položaj i pravac.

class Light(Camera):

Properties

A3DObject → SceneObject → Entity → Camera → Light

Light nasleđuje od Camera. U trenutnom izdanju, Light klasa sama po sebi ne izlaže dodatna svojstva izvan onih nasleđenih od Camera i Entity. LightType enum postoji za kategorizaciju svetala, ali ne postoji light_type svojstvo na Light klasu.

Properties 

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.

Properties

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 takođe nasleđuje sve Camera svojstva (near_plane, far_plane, itd.), iako ovo nije značajno za objekte svetla. Napomena: Light klasa ne izlaže light_type svojstvo u trenutnoj API površini.

Vrednosti LightType 

from aspose.threed.entities import LightType
PropertiesPropertiesProperties
LightType.POINT"POINT"Emitira svetlo jednako u svim pravcima iz jedne tačke.
LightType.DIRECTIONAL"DIRECTIONAL"Paralelni zraci iz beskonačno udaljenog izvora (kao sunčeva svetlost).
LightType.SPOT"SPOT"Zrak u obliku konusa; položaj i smer su važni.
LightType.AREA"AREA"Svetlo koje se emituje iz pravougaone površine.
LightType.VOLUME"VOLUME"Volumetrijsko/globalno osvetljenje svetlo.

Primeri upotrebe

Tačkasto svetlo 

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)

Usmereno svetlo 

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")

Dodajte i kameru i svetlo 

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)

Izlistajte svetla u uvezenoj sceni 

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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