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# ----------------------------------------------------------------------------
# - Open3D: www.open3d.org -
# ----------------------------------------------------------------------------
# Copyright (c) 2018-2024 www.open3d.org
# SPDX-License-Identifier: MIT
# ----------------------------------------------------------------------------
"""Demo scene demonstrating models, built-in shapes, and materials"""
import numpy as np
import open3d as o3d
import open3d.visualization as vis
def create_scene():
"""Creates the geometry and materials for the demo scene and returns a
dictionary suitable for draw call
"""
# Create some shapes for our scene
a_cube = o3d.geometry.TriangleMesh.create_box(2,
4,
4,
create_uv_map=True,
map_texture_to_each_face=True)
a_cube.compute_triangle_normals()
a_cube.translate((-5, 0, -2))
a_cube = o3d.t.geometry.TriangleMesh.from_legacy(a_cube)
a_sphere = o3d.geometry.TriangleMesh.create_sphere(2.5,
resolution=40,
create_uv_map=True)
a_sphere.compute_vertex_normals()
rotate_90 = o3d.geometry.get_rotation_matrix_from_xyz((-np.pi / 2, 0, 0))
a_sphere.rotate(rotate_90)
a_sphere.translate((5, 2.4, 0))
a_sphere = o3d.t.geometry.TriangleMesh.from_legacy(a_sphere)
a_cylinder = o3d.geometry.TriangleMesh.create_cylinder(
1.0, 4.0, 30, 4, True)
a_cylinder.compute_triangle_normals()
a_cylinder.rotate(rotate_90)
a_cylinder.translate((10, 2, 0))
a_cylinder = o3d.t.geometry.TriangleMesh.from_legacy(a_cylinder)
a_ico = o3d.geometry.TriangleMesh.create_icosahedron(1.25,
create_uv_map=True)
a_ico.compute_triangle_normals()
a_ico.translate((-10, 2, 0))
a_ico = o3d.t.geometry.TriangleMesh.from_legacy(a_ico)
# Load an OBJ model for our scene
helmet_data = o3d.data.FlightHelmetModel()
helmet = o3d.io.read_triangle_model(helmet_data.path)
helmet_parts = o3d.t.geometry.TriangleMesh.from_triangle_mesh_model(helmet)
# Create a ground plane
ground_plane = o3d.geometry.TriangleMesh.create_box(
50.0, 0.1, 50.0, create_uv_map=True, map_texture_to_each_face=True)
ground_plane.compute_triangle_normals()
rotate_180 = o3d.geometry.get_rotation_matrix_from_xyz((-np.pi, 0, 0))
ground_plane.rotate(rotate_180)
ground_plane.translate((-25.0, -0.1, -25.0))
ground_plane.paint_uniform_color((1, 1, 1))
ground_plane = o3d.t.geometry.TriangleMesh.from_legacy(ground_plane)
# Material to make ground plane more interesting - a rough piece of glass
ground_plane.material = vis.Material("defaultLitSSR")
ground_plane.material.scalar_properties['roughness'] = 0.15
ground_plane.material.scalar_properties['reflectance'] = 0.72
ground_plane.material.scalar_properties['transmission'] = 0.6
ground_plane.material.scalar_properties['thickness'] = 0.3
ground_plane.material.scalar_properties['absorption_distance'] = 0.1
ground_plane.material.vector_properties['absorption_color'] = np.array(
[0.82, 0.98, 0.972, 1.0])
painted_plaster_texture_data = o3d.data.PaintedPlasterTexture()
ground_plane.material.texture_maps['albedo'] = o3d.t.io.read_image(
painted_plaster_texture_data.albedo_texture_path)
ground_plane.material.texture_maps['normal'] = o3d.t.io.read_image(
painted_plaster_texture_data.normal_texture_path)
ground_plane.material.texture_maps['roughness'] = o3d.t.io.read_image(
painted_plaster_texture_data.roughness_texture_path)
# Load textures and create materials for each of our demo items
wood_floor_texture_data = o3d.data.WoodFloorTexture()
a_cube.material = vis.Material('defaultLit')
a_cube.material.texture_maps['albedo'] = o3d.t.io.read_image(
wood_floor_texture_data.albedo_texture_path)
a_cube.material.texture_maps['normal'] = o3d.t.io.read_image(
wood_floor_texture_data.normal_texture_path)
a_cube.material.texture_maps['roughness'] = o3d.t.io.read_image(
wood_floor_texture_data.roughness_texture_path)
tiles_texture_data = o3d.data.TilesTexture()
a_sphere.material = vis.Material('defaultLit')
a_sphere.material.texture_maps['albedo'] = o3d.t.io.read_image(
tiles_texture_data.albedo_texture_path)
a_sphere.material.texture_maps['normal'] = o3d.t.io.read_image(
tiles_texture_data.normal_texture_path)
a_sphere.material.texture_maps['roughness'] = o3d.t.io.read_image(
tiles_texture_data.roughness_texture_path)
terrazzo_texture_data = o3d.data.TerrazzoTexture()
a_ico.material = vis.Material('defaultLit')
a_ico.material.texture_maps['albedo'] = o3d.t.io.read_image(
terrazzo_texture_data.albedo_texture_path)
a_ico.material.texture_maps['normal'] = o3d.t.io.read_image(
terrazzo_texture_data.normal_texture_path)
a_ico.material.texture_maps['roughness'] = o3d.t.io.read_image(
terrazzo_texture_data.roughness_texture_path)
metal_texture_data = o3d.data.MetalTexture()
a_cylinder.material = vis.Material('defaultLit')
a_cylinder.material.texture_maps['albedo'] = o3d.t.io.read_image(
metal_texture_data.albedo_texture_path)
a_cylinder.material.texture_maps['normal'] = o3d.t.io.read_image(
metal_texture_data.normal_texture_path)
a_cylinder.material.texture_maps['roughness'] = o3d.t.io.read_image(
metal_texture_data.roughness_texture_path)
a_cylinder.material.texture_maps['metallic'] = o3d.t.io.read_image(
metal_texture_data.metallic_texture_path)
geoms = [{
"name": "plane",
"geometry": ground_plane
}, {
"name": "cube",
"geometry": a_cube
}, {
"name": "cylinder",
"geometry": a_cylinder
}, {
"name": "ico",
"geometry": a_ico
}, {
"name": "sphere",
"geometry": a_sphere
}]
# Load the helmet
for name, tmesh in helmet_parts.items():
geoms.append({
"name": name,
"geometry": tmesh.scale(10.0, (0.0, 0.0, 0.0))
})
return geoms
if __name__ == "__main__":
geoms = create_scene()
vis.draw(geoms,
bg_color=(0.8, 0.9, 0.9, 1.0),
show_ui=True,
width=1920,
height=1080)
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