Frequently Asked Questions(Keep Updating)

[ChenLinghao(技术秘书)]

Q:如何报名课程？
A:课程暂时无需报名，只需观看直播即可。

Q:如何观看直播?
A:直播于北京时间2020年2月11日开始，每周二周五上午10:00-11:00进行，直播间链接

Q:课程直播有没有录像?
A:课程直播有录像回放。我们会在课程直播后上传录像并通知给大家。通知方式包括邮件，微信群和公众号。请大家留意邮箱，微信群和公众号。

Q:课程PPT会不会公开?
A:课程PPT会公开在课程主页和GAMES网站上。PPT上传后会通知给大家，通知方式包括邮件，微信群和公众号。请大家留意邮箱，微信群和公众号。

Q:怎么提交作业？作业说明怎么得到？
A:作业系统的注册登录和使用方法请点击这里，作业说明会由助教在BBS上发布，并邮件通知大家，请大家留意邮箱。

Q:课件PDF下载不下来？
A:由于课件PDF原链接是国外的，因此中国大陆访问速度较慢，我们为中国大陆的用户准备了百度云备份链接，在这里可以看到。

Q:虚拟机运行卡顿？
A:虚拟机运行卡顿时，可以在设置中提高分配的内存和cpu核心数。

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• This topic was modified 4 years, 2 months ago by ChenLinghao(技术秘书).
• This topic was modified 4 years, 2 months ago by ChenLinghao(技术秘书).
• This topic was modified 4 years, 2 months ago by ChenLinghao(技术秘书).
• This topic was modified 4 years, 2 months ago by ChenLinghao(技术秘书).
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• This topic was modified 4 years, 1 month ago by ChenLinghao(技术秘书).
• This topic was modified 4 years, 1 month ago by ChenLinghao(技术秘书).
• This topic was modified 4 years, 1 month ago by ChenLinghao(技术秘书).

[助教]

⚠️⚠️⚠️作业三常见问题集合：
(1) bump mapping 部分的 h(u,v)=texture_color(u,v).norm, 其中 u,v 是 tex_coords, w,h 是 texture 的宽度与高度
(2) rasterizer.cpp 中 v = t.toVector4()
(3) get_projection_matrix 中的 eye_fov 应该被转化为弧度制
(4) bump 与 displacement 中修改后的 normal 仍需要 normalize
(5) 可能用到的 eigen 方法：norm(), normalized(), cwiseProduct()
(6) 实现 h(u+1/w,v) 的时候要写成 h(u+1.0/w,v)
(7) 正规的凹凸纹理应该是只有一维参量的灰度图，而本课程为了框架使用的简便性而使用了一张 RGB 图作为凹凸纹理的贴图，因此需要指定一种规则将彩色投影到灰度，而我只是「恰好」选择了 norm 而已。为了确保你们的结果与我一致，我才要求你们都使用 norm 作为计算方法。
(8) bump mapping & displacement mapping 的计算的推导日后将会在光线追踪部分详细介绍，目前请按照注释实现。

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• This reply was modified 4 years, 1 month ago by 助教.
• This reply was modified 4 years, 1 month ago by 助教.
• This reply was modified 4 years, 1 month ago by 助教.
• This reply was modified 4 years, 1 month ago by 助教.
• This reply was modified 4 years, 1 month ago by 助教.

[禹鹏（助教）]

作业8问题集合：
1. 依赖安装命令中 “\\” 应该改为换行符”\”, 或者你可以忽略直接用下面的命令：

$sudo apt install libglu1-mesa-dev freeglut3-dev mesa-common-dev

2. 欧拉法Global Damping force的计算就是 f_d = -k_d * v

• This reply was modified 3 years, 12 months ago by 禹鹏（助教）.
• This reply was modified 3 years, 12 months ago by 禹鹏（助教）.

[Sara Palm]

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