oeasy-python-tutorial/md2/0710/0710.md at main · overmind1980/oeasy-python-tutorial

Error in user YAML: (<unknown>): could not find expected ':' while scanning a simple key at line 3 column 1

---
- oeasy Python 0710
- 这是 oeasy 系统化 Python 教程，从基础一步步讲，扎实、完整、不跳步。愿意花时间学，就能真正学会。
本教程同步发布在： 

     个人网站： `https://oeasy.org` 
     蓝桥云课： `https://www.lanqiao.cn/courses/3584` 
     GitHub： `https://github.com/overmind1980/oeasy-python-tutorial` 
     Gitee： `https://gitee.com/overmind1980/oeasypython` 
---

import bpy
import bmesh

# 创建一个新的网格数据
mesh = bpy.data.meshes.new("NewMesh")
# 创建一个新的物体并关联到新的网格数据
obj = bpy.data.objects.new("NewObject", mesh)
# 将新物体添加到当前场景
bpy.context.scene.collection.objects.link(obj)

# 进入编辑模式
bpy.context.view_layer.objects.active = obj
bpy.ops.object.mode_set(mode='EDIT')

# 创建一个Bmesh对象
bm = bmesh.from_edit_mesh(mesh)

# 创建三个顶点
v1 = bm.verts.new((0, 0, 0))
v2 = bm.verts.new((0, 1, 0))
v3 = bm.verts.new((1, 0, 0))

# 创建一个面
face = bm.faces.new([v1, v2, v3])

# 更新Bmesh对象到网格数据
bmesh.update_edit_mesh(mesh)

# 退出编辑模式
bpy.ops.object.mode_set(mode='OBJECT')

多棱锥、金字塔

import bpy
import math

def create_triangular_pyramid(base_radius=1, height=1):
    vertices = [(math.cos(math.radians(angle)) * base_radius, math.sin(math.radians(angle)) * base_radius, 0)
                for angle in range(0, 360, 120)]
    vertices.append((0, 0, height))
    faces = [(0, 1, 2),  # 底面
             (0, 1, 3),  # 侧面1
             (1, 2, 3),  # 侧面2
             (2, 0, 3)]  # 侧面3

    mesh = bpy.data.meshes.new("TriangularPyramid")
    mesh.from_pydata(vertices, [], faces)
    obj = bpy.data.objects.new("TriangularPyramid", mesh)
    bpy.context.collection.objects.link(obj)
    bpy.context.view_layer.objects.active = obj
    return obj


triangular_pyramid = create_triangular_pyramid()

上材质

import bpy
import math

def create_triangular_pyramid(base_radius=1, height=1):
    vertices = [(math.cos(math.radians(angle)) * base_radius, math.sin(math.radians(angle)) * base_radius, 0)
                for angle in range(0, 360, 120)]
    vertices.append((0, 0, height))
    faces = [(0, 1, 2),  # 底面
             (0, 1, 3),  # 侧面1
             (1, 2, 3),  # 侧面2
             (2, 0, 3)]  # 侧面3
    mesh = bpy.data.meshes.new("TriangularPyramid")
    mesh.from_pydata(vertices, [], faces)
    obj = bpy.data.objects.new("TriangularPyramid", mesh)
    bpy.context.collection.objects.link(obj)
    bpy.context.view_layer.objects.active = obj
    mat = bpy.data.materials.new(name="ColoredMaterial")
    mat.diffuse_color = (1, 1, 0.3, 1)  
    bpy.context.object.data.materials.append(mat)
    return obj

triangular_pyramid = create_triangular_pyramid()

灯光、摄影机、渲染

import bpy
import math

def clear_scene():
    bpy.ops.object.select_all(action="SELECT") 
    bpy.ops.object.delete() 
    bpy.ops.mesh.primitive_plane_add(size=20)


def create_triangular_pyramid(base_radius=1, height=1):
    vertices = [(math.cos(math.radians(angle)) * base_radius, math.sin(math.radians(angle)) * base_radius, 0)
                for angle in range(0, 360, 120)]
    vertices.append((0, 0, height))
    faces = [(0, 1, 2),  # 底面
             (0, 1, 3),  # 侧面1
             (1, 2, 3),  # 侧面2
             (2, 0, 3)]  # 侧面3
    mesh = bpy.data.meshes.new("TriangularPyramid")
    mesh.from_pydata(vertices, [], faces)
    obj = bpy.data.objects.new("TriangularPyramid", mesh)
    bpy.context.collection.objects.link(obj)
    bpy.context.view_layer.objects.active = obj
    mat = bpy.data.materials.new(name="ColoredMaterial")
    mat.diffuse_color = (1, 1, 0.3, 1)  
    bpy.context.object.data.materials.append(mat)
    return obj

def init():
    bpy.ops.object.light_add(type='POINT', location=(2, 3, 3))
    light = bpy.context.object
    light.data.energy = 4000 
    bpy.ops.object.camera_add(enter_editmode=False, align='VIEW', location=(0, 0, 7))
    cam = bpy.context.object
    bpy.context.scene.camera = cam

def render():
    bpy.context.scene.render.engine = 'CYCLES' 
    bpy.context.scene.render.resolution_x = 640
    bpy.context.scene.render.resolution_y = 480
    bpy.context.scene.render.resolution_percentage = 50
    bpy.context.scene.render.filepath = '/tmp/triangular_pyramid.png' 
    bpy.ops.render.render(write_still=True)

clear_scene()
triangular_pyramid = create_triangular_pyramid()
init()
render()

多棱柱

import bpy
import math
bpy.ops.object.select_all(action='DESELECT')
bpy.ops.object.select_all(action='SELECT')
bpy.ops.object.delete(use_global=False)
def create_hexagonal_prism(radius=1, height=2):
    vertices = [(math.cos(math.radians(angle)) * radius, math.sin(math.radians(angle)) * radius, -height/2)
                for angle in range(0, 360, 60)]
    vertices += [(math.cos(math.radians(angle)) * radius, math.sin(math.radians(angle)) * radius, height/2)
                 for angle in range(0, 360, 60)]
    faces = [(0, 1, 2, 3, 4, 5),
             (6, 7, 8, 9, 10, 11),
             (0, 1, 7, 6),
             (1, 2, 8, 7),
             (2, 3, 9, 8),
             (3, 4, 10, 9),
             (4, 5, 11, 10),
             (5, 0, 6, 11)]
    mesh = bpy.data.meshes.new("HexagonalPrism")
    mesh.from_pydata(vertices, [], faces)
    obj = bpy.data.objects.new("HexagonalPrism", mesh)
    bpy.context.collection.objects.link(obj)
    bpy.context.view_layer.objects.active = obj
    return obj

hexagonal_prism = create_hexagonal_prism()

emoji

import bpy

def create_material(name, color):
    mat = bpy.data.materials.new(name)
    mat.use_nodes = False
    mat.diffuse_color = color
    return mat

def create_emoji():
    # 清除场景
    bpy.ops.object.select_all(action='SELECT')
    bpy.ops.object.delete()
    
    # 创建空物体作为父对象
    bpy.ops.object.empty_add(type='PLAIN_AXES', location=(0, 0, 0))
    emoji = bpy.context.active_object
    emoji.name = "Emoji"
    
    # 创建材质
    yellow_mat = create_material("YellowMaterial", (1, 1, 0, 1))
    black_mat = create_material("BlackMaterial", (0, 0, 0, 1))
    
    # 创建主体
    bpy.ops.mesh.primitive_uv_sphere_add(
        segments=32, 
        ring_count=16, 
        radius=1, 
        location=(0, 0, 0)
    )
    body = bpy.context.object
    body.name = "EmojiBody"
    body.scale = (1, 1, 0.5)
    body.data.materials.append(yellow_mat)
    body.parent = emoji
    
    # 创建眼睛
    for i in [-0.3, 0.3]:
        bpy.ops.mesh.primitive_uv_sphere_add(
            segments=8, 
            ring_count=8, 
            radius=0.1, 
            location=(i, 0.3, 0.4)
        )
        eye = bpy.context.object
        eye.name = f"EmojiEye{i}"
        eye.data.materials.append(black_mat)
        eye.parent = emoji
    
    # 创建嘴巴
    verts = [(0.4, 0.1, 0), (-0.4, 0.1, 0), (0.3, 0.05, 0), (-0.3, 0.05, 0)]
    edges = [(0, 1), (1, 3), (3, 2), (2, 0)]
    faces = [(0, 1, 3, 2)]
    
    mouth_mesh = bpy.data.meshes.new("EmojiMouthMesh")
    mouth_mesh.from_pydata(verts, edges, faces)
    mouth_obj = bpy.data.objects.new("EmojiMouth", mouth_mesh)
    mouth_obj.data.materials.append(black_mat)
    mouth_obj.location = (0, -0.4, 0.5)
    
    # 获取当前集合
    current_collection = bpy.context.collection
    # 将嘴巴对象添加到当前集合
    current_collection.objects.link(mouth_obj)
    # 设置父对象
    mouth_obj.parent = emoji
    
    return emoji

create_emoji()

本文来自 oeasy Python 系统教程。
想完整、扎实学 Python，
搜索 oeasy 即可。

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

多棱锥、金字塔

上材质

灯光、摄影机、渲染

多棱柱

emoji

FilesExpand file tree

0710.md

Latest commit

History

0710.md

File metadata and controls

多棱锥、金字塔

上材质

灯光、摄影机、渲染

多棱柱

emoji