virtualenv ---- python virtual environment manager

2020-08-07 约 217 字 预计阅读 1 分钟

教程

https://packaging.python.org/guides/installing-using-pip-and-virtual-environments/#:~:text=To%20create%20a%20virtual%20environment,virtualenv%20in%20the%20below%20commands.&text=The%20second%20argument%20is%20the,project%20and%20call%20it%20env%20.

依赖的 备份 与 还原（安装）

dump dependencies

1

pip freeze > requirements.txt

restore

1

pip install -r requirements.txt

创建工具

venv

python -m venv your_env_name

激活

  1. linux + zsh

    • 有效：

      • source /venv/bin/activate~

    • 无效：

      • ./venv/bin/activate

      • . ./venv/bin/activate

        • 有时有效，有时失效

特点

  • python 标准库
  • python3.3 以后

参数

  • your_env_name

阅读更多

Python logging

2020-08-05 约 1054 字 预计阅读 3 分钟

入门

设置 logging 的完整流程

 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21

import logging

# Create a logger object
logger = logging.getLogger()
logger.setLevel(logging.INFO)

# Create a stream handler
sh = logging.StreamHandler()

# Set the level of the handler
sh.setLevel(logging.INFO)

# Create a formatter and set it for the handler
formatter = logging.Formatter('%(asctime)s: %(levelname)s: %(message)s')
sh.setFormatter(formatter)

# Add the handler to the logger
logger.addHandler(sh)

# Log an info message
logger.info('hello')

  1. 包含关系：logger –> handler –> formater

阅读更多

Jackson libary for Java Json

2020-08-04 约 330 字 预计阅读 1 分钟

类的映射

  • Data class
 1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15

  package cn.matgene.jack;

  import lombok.AllArgsConstructor;
  import lombok.Data;
  import lombok.NoArgsConstructor;
  import lombok.Value;

  @Data
  @AllArgsConstructor
  @NoArgsConstructor
  public class Person {
private String name;
private long id;

  }

  • Test and convert class to json

阅读更多

Computer Graphics

2020-08-03 约 2252 字 预计阅读 5 分钟

教程

曲线曲面：参数曲线、参数几何代数形式 https://blog.csdn.net/Jurbo/article/details/75046766

英语专业名词

CS184 教程

Lecture 0, Other notes

Instructor导师，教育者
instructional教学的，教育的
registrar(大学)教务长，教务主任；登记员
Instructors and TAsteacher assistants
roster执勤名单；候选名单
class roster老师的点名册（花名册）；名册
teaching staff教职员；教师；教育工作者
user-programmable vertex engine
vertex顶点
fragment shaders像素着色器
as of在……是
as of last semester
niggling issuses微不足道的；（不严重却持续不断的）烦人的
being of importance很重要
treate this assignment as being of utmost importance
piazza(尤指意大利城镇中的) 广场;

Lecture 1, Course Overview

segment 1
spherical harmonic lighting球谐光照
on the faculty of职员之一；（院校）系里的成员
graphics image synthesis
rendering
create realistic images
ACM SIGGRAPH
program 3D computer graphics
OpenGL, which is a graphics API
the OpenGL shading language
a real time scene viewer
ray tracing光线追踪算法
a little bit of a hint of the kinds of things
collage拼贴画；收集品
reflections反射
refractions折射
glass spheres玻璃球
chess boards
initial segment
it's really an intellectually, exciting and challenging field,
Pixar
1995 Toy Story by Pixarfirst completely computer graphics movie
Lighting simulation
one very important area in computer graphics
computer graphics is really critical for visualization.
flight simulators
and so forth.等等
digital visual media
of which computer graphics is an integral part
3D geometric models
Visual media are so prevalent
We have Flickr. YouTube. WebGL
Google earth
very realistic flythroughs of the real world.
Electronic publishing
Online gaming
is perhaps the biggest driver of games
3D printers and fabrication
we are now seeing a vast revolution
print real 3D objects, perhaps with realistic material properties
we can expect to see dramatic advances
new computing methods, new display technologies
  • Lighting simulation lighting simulation is important to create realistic simulations of how the interiors of buildings, interiors of rooms will look. How an automobile will look in an outdoor lighting environment. And computer graphics is used for all of these applications. It can be used for scientific visualization as well as medical visualization.
  • future So, what we have seen here is that computer graphics has numerous applications and it involves fundamental intellectual and technical challenges which make it one of the most exciting areas to study and I hope you will join us in this course.
Segement 2, Outline and Logistics
course logistics
go over some of the course logistics
3D graphics pipeline.
collaborators合作者
humanoid motion人形的
vibrant humanoid motion
assignment任务
homework
assignment logistics
Logistics组织，安排；
后勤
rasterize格栅化，点阵化
raytrace光线追踪
workload工作量
shaders
programmable shaders
our initial lecture on an overview and history.
was coined by由……创造，铸造
a bank of一堆……
a bank of LEDs
in the scene场面，场景
presages预兆
SuperPaint system really presages modern software technologies
alter images by cropping, scaling, compositing them.
add or remove objects.
Sports broadcasts
That's been a quick tour of 2D computer graphics.
Geometric modeling
Geometric modeling is the process of creating 3D geometry,
spline curves and surfaces样条曲线
genus属，类
spout(容器的)嘴；水柱

  • 3D graphics pipeline he graphics pipeline consists of 3 stages: modeling, animation and rendering.

阅读更多