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Merge pull request #323 from mhintz/readme-edit

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Add note about column-vector convention
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Brendan Zabarauskas 2016-04-10 18:57:46 +10:00
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@ -25,6 +25,13 @@ is not fully covered by the testsuite. If you encounter any mistakes or
omissions please let me know by posting an issue, or even better: send me a omissions please let me know by posting an issue, or even better: send me a
pull request with a fix. pull request with a fix.
## Conventions
cgmath interprets its vectors as column matrices (also known as "column
vectors"), meaning when transforming a vector with a matrix, the matrix goes
on the left. This is reflected in the fact that cgmath implements the
multiplication operator for Matrix * Vector, but not Vector * Matrix.
## Limitations ## Limitations
cgmath is _not_ an n-dimensional library and is aimed at computer graphics cgmath is _not_ an n-dimensional library and is aimed at computer graphics