Aspose.3D FOSS
Python
Light

Light

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

Light er en Entity som legger til en lyskilde i en 3D-scene. Som Camera, er den festet til en Node for å kontrollere posisjonen og retningen.

class Light(Camera):

Methods

A3DObject → SceneObject → Entity → Camera → Light

Light arver fra Camera. I den nåværende utgivelsen er Light klassen i seg selv eksponerer ikke ekstra egenskaper utover de som er arvet fra Camera og Entity. LightType enum finnes for å kategorisere lys, men det finnes ingen light_type egenskap på Light klassen.

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 arver også alle Camera egenskaper (near_plane, far_plane, osv.), selv om disse ikke er meningsfulle for lysobjekter. Merk: Light klassen eksponerer ikke en light_type egenskap i det nåværende API-området.

LightType-verdier 

from aspose.threed.entities import LightType
MethodsMethodsMethods
LightType.POINT"POINT"Sender ut lys likt i alle retninger fra ett enkelt punkt.
LightType.DIRECTIONAL"DIRECTIONAL"Parallell stråler fra en uendelig fjern kilde (som sollys).
LightType.SPOT"SPOT"Kjegleformet stråle; posisjon og retning er viktig.
LightType.AREA"AREA"Lys som sendes ut fra et rektangulært område.
LightType.VOLUME"VOLUME"Volumetrisk/global illumination-lys.

Brukseksempler

Punktlys 

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)

Retningslys 

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")

Legg til både et kamera og et lys 

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)

List opp lys i en importert scene 

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)

Se også

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