Crate fpn

Fixed Point Numbers

Fixed point number is designed to provide a memory presentation for real numbers. Currently implemented only for a few cases for purpose of real usages, but will make it flexible enough later.

FPN is the struct which contains a primitive for memory presentation with a specified length of bits for fractions. Normal F64 (FPN<i64, U12>) and F32 (FPN<i32, U8>) should be fine for usages. But be careful about the range overflow which doing Add, Mul and Div

FPN also provides trigonometric functions including sin, cos and tan.

Vector2 and Vector3 provides the graphic computation containers for 2D and 3D, while F64Vector2 (Vector2<F64>), F64Vector3, F32Vector2 and F32Vector3 for fixed numbers.

Dot trait and Cross provides the dot product and cross product, while Polar trait provides the function convert a Cartesian Coordinate to a Polar/Spherical Coordinates.

Rotate2 trait and Rotate3 trait provides the function to rotate Vector2 around the origin point and rotate Vector3 around the axises.

Re-exports

pub use base::FPN;

pub use base::To;

pub use common::FPN64;

pub use common::FPN32;

pub use common::F64;

pub use common::F32;

pub use cg::Vector2;

pub use cg::Vector3;

pub use cg::FVector2;

pub use cg::FVector3;

pub use cg::F64Vector2;

pub use cg::F64Vector3;

pub use cg::Dot;

pub use cg::Polar;

pub use cg::Cross;

pub use cg::Rotate2;

pub use cg::Rotate3;

Modules

base

base provides basic fixed point numbers and implemented common ops traits for FPNs with integar primitives.

cg

cg module provides basic Vector2 Vector3 struct with primitive scalars and also provides FPN inegrated version. Common ops traits are implemented here.

common

Common FPNs defined including: F64 and F32.

Macros

eq

eq_with_eps

fv2_eq

fv3_eq