Aspose.3D FOSS
Python
Material

LambertMaterial and PhongMaterial — Aspose.3D FOSS for Python API Reference

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

Aspose.3D FOSS menyediakan dua kelas material dalam hierarki shading klasik:

  • LambertMaterial: penyamaran matte difus (tanpa spekularitas)
  • PhongMaterial: memperluas Lambert dengan sorotan spekular dan kilap

Keduanya ditetapkan ke sebuah Node melalui node.material. Warna diatur menggunakan Vector3(r, g, b) di mana komponen berada dalam [0.0, 1.0].

LambertMaterial 

class LambertMaterial(Material):

Properties

A3DObject → Material → LambertMaterial

Properties 

LambertMaterial(name: str = None)

Properties

PropertiesPropertiesProperties
ambient_color`Vector3None`
diffuse_color`Vector3None`
emissive_color`Vector3None`
transparent_color`Vector3None`
transparencyfloatTingkat opasitas: 0.0 = sepenuhnya opak, 1.0 = sepenuhnya transparan. Dibatasi hingga [0.0, 1.0].

PhongMaterial 

class PhongMaterial(LambertMaterial):

Properties

A3DObject → Material → LambertMaterial → PhongMaterial

Mewarisi semua LambertMaterial properti dan menambahkan:

Properti Tambahan

PropertiesPropertiesProperties
specular_color`Vector3None`
specular_factorfloatSkala kontribusi spekular. Default 0.0.
shininessfloatEksponen kilau Phong. Lebih tinggi = sorotan yang lebih ketat/kecil. Default 0.0.
reflection_color`Vector3None`
reflection_factorfloatJumlah pencampuran untuk pantulan. Default 0.0.

Contoh Penggunaan

Material Matte Lambert 

from aspose.threed import Scene
from aspose.threed.entities import Mesh
from aspose.threed.shading import LambertMaterial
from aspose.threed.utilities import Vector3, Vector4

scene = Scene()

# Build a simple triangle mesh
mesh = Mesh()
mesh.control_points.append(Vector4(0, 0, 0, 1))
mesh.control_points.append(Vector4(1, 0, 0, 1))
mesh.control_points.append(Vector4(0.5, 1, 0, 1))
mesh.create_polygon(0, 1, 2)

# Create a matte red material
mat = LambertMaterial("red-matte")
mat.diffuse_color = Vector3(0.8, 0.1, 0.1)    # R, G, B in [0, 1]
mat.ambient_color = Vector3(0.1, 0.05, 0.05)

node = scene.root_node.create_child_node("triangle", mesh)
node.material = mat

scene.save("lambert.obj")

Material Mengkilap Phong 

from aspose.threed import Scene
from aspose.threed.entities import Mesh
from aspose.threed.shading import PhongMaterial
from aspose.threed.utilities import Vector3, Vector4

scene = Scene()

mesh = Mesh()
mesh.control_points.append(Vector4(0, 0, 0, 1))
mesh.control_points.append(Vector4(1, 0, 0, 1))
mesh.control_points.append(Vector4(0.5, 1, 0, 1))
mesh.create_polygon(0, 1, 2)

mat = PhongMaterial("shiny-blue")
mat.diffuse_color = Vector3(0.1, 0.2, 0.8)   # blue
mat.specular_color = Vector3(1.0, 1.0, 1.0)  # white highlights
mat.specular_factor = 0.5
mat.shininess = 64.0                           # tight specular lobe
mat.ambient_color = Vector3(0.05, 0.05, 0.1)

node = scene.root_node.create_child_node("mesh", mesh)
node.material = mat

scene.save("phong.obj")

Material Semi-Transparan 

from aspose.threed.shading import LambertMaterial
from aspose.threed.utilities import Vector3

mat = LambertMaterial("glass")
mat.diffuse_color = Vector3(0.7, 0.9, 1.0)   # faint blue tint
mat.transparency = 0.7                         # 70% transparent

Baca Material dari Adegan yang Diimpor 

from aspose.threed import Scene
from aspose.threed.shading import LambertMaterial, PhongMaterial

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

def inspect_node(node):
    if node.material:
        m = node.material
        kind = "Phong" if isinstance(m, PhongMaterial) else "Lambert"
        print(f"Node '{node.name}': {kind}: diffuse={m.diffuse_color}")
        if isinstance(m, PhongMaterial):
            print(f"  shininess={m.shininess}")
    for child in node.child_nodes:
        inspect_node(child)

inspect_node(scene.root_node)

PbrMaterial 

class PbrMaterial(Material):

Properties

A3DObject → Material → PbrMaterial

Material PBR (Physically Based Rendering). Digunakan oleh glTF 2.0 dan format lain yang mendukung PBR. Ditetapkan ke sebuah Node melalui node.material.

Properties 

PbrMaterial(name: str = None, albedo: Vector3 = None)

Properties

PropertiesPropertiesProperties
albedo`Vector3None`
albedo_textureapa sajaPeta tekstur untuk saluran albedo.
normal_textureapa sajaTekstur peta normal.
metallic_factorfloatKontribusi metallic: 0.0 = sepenuhnya dielektrik, 1.0 = sepenuhnya logam.
roughness_factorfloatKekasaran permukaan: 0.0 = halus/cermin, 1.0 = sepenuhnya kasar.
metallic_roughnessapa sajaTekstur gabungan metallic-roughness (konvensi glTF: B=metallic, G=roughness).
occlusion_textureapa sajaTekstur ambient occlusion.
occlusion_factorfloatKekuatan efek ambient occlusion.
emissive_textureapa sajaTekstur emisif untuk wilayah yang menyala sendiri.
emissive_color`Vector3None`
transparencyfloatTingkat opasitas: 0.0 = sepenuhnya tidak tembus pandang, 1.0 = sepenuhnya transparan.

Metode Kelas

PropertiesTipe PengembalianProperties
PbrMaterial.from_material(material)PbrMaterialMengonversi sebuah LambertMaterial atau PhongMaterial menjadi PbrMaterial aproksimasi.

Contoh Penggunaan 

from aspose.threed import Scene
from aspose.threed.entities import Mesh
from aspose.threed.shading import PbrMaterial
from aspose.threed.utilities import Vector3, Vector4

scene = Scene()

mesh = Mesh()
mesh.control_points.append(Vector4(0, 0, 0, 1))
mesh.control_points.append(Vector4(1, 0, 0, 1))
mesh.control_points.append(Vector4(0.5, 1, 0, 1))
mesh.create_polygon(0, 1, 2)

mat = PbrMaterial("pbr-metal")
mat.albedo = Vector3(0.8, 0.6, 0.2)    # gold-ish base color
mat.metallic_factor = 0.9
mat.roughness_factor = 0.2

node = scene.root_node.create_child_node("mesh", mesh)
node.material = mat

scene.save("pbr.glb")

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