physics2d 0.6.0

Yet another 2D physics engine, but with Iron power.
Documentation 
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pub mod broad_phase;

mod narrow_phase;
mod solver;

pub use self::narrow_phase::{Collide, collide};
pub use self::solver::{ContactConstraint};
use math::{Vec2, Cross};

#[derive(Copy, Clone)]
pub struct Contact {
    pub position: Vec2,
    pub penetration: f32,
    
    pub normal: Vec2,
    pub tangent: Vec2,
}

impl Contact {
    pub fn new(position: Vec2, penetration: f32, normal: Vec2) -> Contact {
        Contact {
            position,
            penetration,
            normal,
            tangent: normal.cross(1.0),
        }
    }
}