关于矩阵前乘和后乘的问题
Nobody has claimed this yet.
Assessment
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Newbie friendliness
- 20/100
- Issue type
- Documentation
- Clarity
- Needs clarification
- Activity status
- Stale
- Tech stack
- android, java
- Domain
- computer-graphics, mobile-dev
Research direction
No repository file, test, or entry point is named. Start by reading Android's Matrix preTranslate and preScale documentation and checking the linked operation-order example; done means the notes clearly explain why the transformations appear to execute in reverse order.
Written by the indexing model from the issue text.
Description
Matrix m ＝ new Matrix();
m.reset();
m.preTranslate(tx, ty); //使用pre，越靠后越先执行。
m.preScale(sx, sy);
这里为什么越靠后先执行啊，矩阵乘法我记得是从左往右进行乘法计算的呀(╯‵□′)╯︵┻━┻
- Dominant language
- Java
- Stars
- 9.3k
- Forks
- 2.1k
- PR merge metrics
- No merged PRs in 30d
Contributor guide
No contributing guide indexed for this repository
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
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