An implementation of Ray Tracing in One Weekend using Taichi

Overview

又一个Taichi语言的Ray Tracer

背景简介

这个Ray Tracer基本上是照搬了Peter Shirley的第一本小书Ray Tracing in One Weekend,在我写的时候参考的是Version 3.2.3这个版本。应该比其他中文博客删改了不少内容。果然Peter Shirley不是标题党,我在国庆期间用了2号、3号两天就写完了。期间还参考了moranzcw大佬一年前的左右 (主要是抄了几个物体的定义)及其帖子下其他人的代码,在此表示感谢。

Taichi语言依附于Python,而我自己本身对Python不是那么的熟悉,更不用提Taichi了。Taichi语言的开发者带简化很多快速数值计算及并行开发的操作,但同时也增添了很多限制(比如我不知道class如何复制导致hit_record无法实现)。再加上python对OOP编程的不完全支持,我写的程序很不优雅,同时也没做足优化。

开发环境:Surface Book 2(15inch)上,使用Python 3.7.8+Taichi v0.8.1

这次写的ray tracer算是运用了太极图形课前两节除了元编程的其他所有内容,把该封装的都封装起来了。

原来以为是个小程序,所以写在了一个文件里,后来也懒得改了

与原书不同的是优化了random_in_unit_sphere()这个用来生成在单位球内随机一点的函数,在我的电脑上跑时(18fps+)与moranzcw大佬的程序(9fps+)相比大概能快一倍。(估计拥有更高配置显卡的大佬们能跑到实时吧)为此特地写了另一个程序来不同随机函数的可视化分布,顺便尝鲜了一下GGUI。

之后加入了一些键鼠操作和录制功能

除此之外还生成了一张书的封面图。不知道为什么原书中22*22个小球不能在我的电脑上生成,经过漫长的等待后,等我的只有被占用了11/15.9GB的内存,和因为使用虚拟内存而跑的飞快的硬盘,当然最后还是闪退了。

成功效果展示

封面图(有小球卡在大球里了 😂 )

Cover

Cornell Box的效果

Cornell Box 1 Cornell Box 2

来个动图
Cornell Box Gif

这是使用错误的随机函数导致的效果

Wrong Cornell Box Gif

使用方法

点击窗口来切换视点
j,k键调整水平视角
s键截图
r键开启/终止录制

整体结构

-LICENSE
-|ouput             如果开始录制的话,视频和动图会储存在这儿
-|img               示例图片
-README.MD
-raytracing.py      本体,生成一个Cornell Box
-dots_on_sphere.py  对随机化程序的可视化

运行方式

应该都安装好taichi了吧

python3 raytracing.py

还存在的问题

  • 如何优雅的ODOP编程,解决类的复制与传递
  • ti.random() 如何设置随机种子
  • 如何声明@ti.kernel中最外层循环串行
  • 如何手动释放内存

TODO(就写写,不一定会码)

  • 渲染一张封面图
  • 增加显式光源,渲染一个Cornell Box
  • 添加其他一些模型
  • 添加材质,贴图
  • 加入BVH
  • 加入三维模型.obj的读取与渲染,渲染一只Standford Rabbit
  • 增加键鼠交互
  • 跟进下一本书的内容
  • 在学习了之后的课程后,使用更多Taichi的特性
Owner
张皓
张皓
:fishing_pole_and_fish: List of `pre-commit` hooks to ensure the quality of your `dbt` projects.

pre-commit-dbt List of pre-commit hooks to ensure the quality of your dbt projects. BETA NOTICE: This tool is still BETA and may have some bugs, so pl

Offbi 262 Nov 25, 2022
combs is a package used to generate all possible combinations of a given length k on a given set.

The package combs is a package used to generate all possible combinations of a given length k on a given set. The set is given as a list, and k must b

1 Dec 24, 2021
A tool to improve Boolean satisfiability (SAT) solver user's life

SatHelper This is a tool to improve the Boolean satisfiability (SAT) and MaxSAT solver user's life. It helps you model various problems as SAT and Max

Tomas Balyo 1 Nov 16, 2021
Digitales Raumbuch

Helios Digitales Raumbuch Settings Moved to settings. Basic Commands Setting Up Your Users To create a normal user account, just go to Sign Up and fil

1 Nov 19, 2021
CalHacks 8 Repo: Megha Jain, Gaurav Bhatnagar, Howard Meng, Vibha Tantry

CalHacks8 CalHacks 8 Repo: Megha Jain, Gaurav Bhatnagar, Howard Meng, Vibha Tantry Setup FE Install React Native via Expo, run App.js. Backend Create

0 Aug 20, 2022
Apache Airflow - A platform to programmatically author, schedule, and monitor workflows

Apache Airflow Apache Airflow (or simply Airflow) is a platform to programmatically author, schedule, and monitor workflows. When workflows are define

The Apache Software Foundation 28.6k Dec 28, 2022
Beancount: Double-Entry Accounting from Text Files.

beancount: Double-Entry Accounting from Text Files Contents Description Documentation Download & Installation Versions Filing Bugs Copyright and Licen

2.3k Dec 28, 2022
Python bindings for the Plex API.

Python-PlexAPI Overview Unofficial Python bindings for the Plex API. Our goal is to match all capabilities of the official Plex Web Client. A few of t

Michael Shepanski 931 Jan 07, 2023
DOP-Tuning(Domain-Oriented Prefix-tuning model)

DOP-Tuning DOP-Tuning(Domain-Oriented Prefix-tuning model)代码基于Prefix-Tuning改进. Files ├── seq2seq # Code for encoder-decoder arch

Andrew Zeng 5 Nov 02, 2022
My solution for a MARL problem on a Grid Environment with Q-tables.

To run the project, run: conda create --name env python=3.7 pip install -r requirements.txt python run.py To-do: Add direction to the state space Take

Merve Noyan 12 Dec 25, 2021
A basic ticketing software.

Ticketer A basic ticketing software. Screenshots Program Launched Issuing Ticket Show your Ticket Entry Done Program Exited Code Features to implement

Samyak Jain 2 Feb 10, 2022
CountBoard 是一个基于Tkinter简单的,开源的桌面日程倒计时应用。

CountBoard 是一个基于Tkinter简单的,开源的桌面日程倒计时应用。 基本功能 置顶功能 是否使窗体一直保持在最上面。 简洁模式 简洁模式使窗体更加简洁。 此模式下不可调整大小,请提前在普通模式下调整大小。 设置功能 修改主窗体背景颜色,修改计时模式。 透明设置 调整窗体的透明度。 修改

gaoyongxian 130 Dec 01, 2022
*考研学习利器,玩电脑控制不住自己时,可以使用该程序定日期锁屏,同时有精美壁纸锁屏显示,也不会枯燥。

LockscreenbyTime_win10 A python program in win10. You can set the time to lock the computer(by setting year, month, day), Fullscreen pictures will sho

PixianDouban 4 Jul 10, 2022
An experimental Python-to-C transpiler and domain specific language for embedded high-performance computing

An experimental Python-to-C transpiler and domain specific language for embedded high-performance computing

Andrea Zanelli 562 Dec 28, 2022
Calculate the efficient frontier

关于 代码主要参考Fábio Neves的文章,你可以在他的文章中找到一些细节性的解释

Wyman Lin 104 Nov 11, 2022
tox-gh is a tox plugin which helps running tox on GitHub Actions with multiple different Python versions on multiple workers in parallel

tox-gh is a tox plugin which helps running tox on GitHub Actions with multiple different Python versions on multiple workers in parallel. This project is inspired by tox-travis.

tox development team 19 Dec 26, 2022
It is Keqin Wang first project in CMU, trying to use DRL(PPO) to control a 5-dof manipulator to draw line in space.

5dof-robot-writing this project aim to use PPO control a 5 dof manipulator to draw lines in 3d space. Introduction to the files the pybullet environme

Keqin Wang 4 Aug 22, 2022
A fast Python in-process signal/event dispatching system.

Blinker Blinker provides a fast dispatching system that allows any number of interested parties to subscribe to events, or "signals". Signal receivers

jason kirtland 1.4k Dec 31, 2022
With the initiation of the COVID vaccination drive across India for all individuals above the age of 18, I wrote a python script which alerts the user regarding open slots in the vicinity!

cowin_notifier With the initiation of the COVID vaccination drive across India for all individuals above the age of 18, I wrote a python script which

13 Aug 01, 2021
A multi purpose password managing and generating tool called Kyper.

Kyper A multi purpose password managing and generating tool called Kyper. Setup The setup for Kyper is fairly simple only involving the command python

Jan Dorian Poczekaj 1 Feb 05, 2022