# [−][src]Crate ezcgmath

# ezcgmath

An extremely simplified linear algebra API, for use with computer graphics.

Math should be fun, and easy. This crate aims to simplify the usage of math in computer graphics applications for both the novice, and the expert. This is achieved by providing a super-straightforward API with good documentation, and zero abstraction on the main types.

## Implementation Details

The `Scalar`

type is fixed to f32. This was chosen due to its straightforward compatibility with graphics APIs.
It is up to the user to create their own abstractions if any limits are hit due to this.

The coordinate system is fixed to being left handed, with Y as up. If you wish to convert to a different coordinate system you may achieve this by creating a reflection matrix and applying it at the appropriate point.

Transformations in this API are applied in a row-major manor. As a reminder, this means that
transformations are applied in the order they are specified.
For example, if you wanted to scale, *then* rotate, and *then* translate a position vector,
you would write these transformations in "reading order":

use ezcgmath::prelude::*; use ezcgmath::approx::*; let position_vector = Vector3::new(5.0, 0.0, 0.0); let scale_matrix = Matrix4x4::from_nonuniform_scale(&Vector3::new(2.0, 1.0, 1.0)); let rotation_matrix = Quaternion::from_axis_angle(&Vector3::new(0.0, 1.0, 0.0), Degrees(90.0)); let translation_matrix = Matrix4x4::from_translation(&Vector3::new(0.0, 0.0, -10.0)); let transformed_vector = position_vector * scale_matrix * rotation_matrix * translation_matrix;

## Disclaimer

ezcgmath is still very much a work in progress. If there are holes you'd like filling, please feel free to open an issue on GitHub so we can start a conversation on it. If you'd like to contribute, that's great! Please read CONTRIBUTING.md for some guidelines on the process.

## Modules

approx | approx crate re-export, useful for asserts on vector/matrix types. |

matrix | Contains Matrix types and operations |

prelude | The most common types you will use in this library, re-exported under a single module. |

quaternion | Contains the Quaternion type |

vector | Contains Vector types and operations |

## Structs

Degrees | An angle in Degrees. Can be converted from Radians easily with |

Radians | An angle in Radians. Can be converted from Degrees easily with |

## Type Definitions

Scalar | The primitive type used for all math in this crate. |