Aspose.3D FOSS
Python
Light

Light

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

Light ir Entity kas pievieno gaismas avotu 3D ainas. Kā Camera, tas ir pievienots pie Node lai kontrolētu tā pozīciju un virzienu.

class Light(Camera):

Example

A3DObject → SceneObject → Entity → Camera → Light

Light manto no Camera. Pašreizējā izlaidumā Light klase pati nepiedāvā papildu īpašības, kas pārsniedz tās mantotās no Camera un Entity.Gaismas LightType enum ir pieejams gaismu kategorizēšanai, bet nav light_type īpašības uz Light klases.

Example 

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.

Example

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 arī manto visus Camera īpašības (near_plane, far_plane, utt.), lai gan šīs nav nozīmīgas gaismas objektiem. Piezīme: Light klase neatklāj light_type īpašību pašreizējā API virsmā.

LightType vērtības 

from aspose.threed.entities import LightType
ExampleExampleExample
LightType.POINT"POINT"Izstaro gaismu vienādi visās virzienos no viena punkta.
LightType.DIRECTIONAL"DIRECTIONAL"Paralēlas staras no bezgalīgi tāla avota (piemēram, saules gaismas).
LightType.SPOT"SPOT"Kona veida stars; pozīcija un virziens ir svarīgi.
LightType.AREA"AREA"Gaisma, kas izstarota no taisnstūra laukuma.
LightType.VOLUME"VOLUME"Apjoma/globālās apgaismošanas gaisma.

Lietošanas piemēri

Punktgaisma 

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)

Virziena gaisma 

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")

Pievienot gan Kameru, gan Gaismu 

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)

Uzskaitīt gaismas importētā scenā 

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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