vrust 0.0.1

VRust game engine
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pub mod manager;

use std::sync::Arc;
use super::super::math::matrix::{Mat3x3, Mat4x4};
use super::super::math::vector::Vec3;
use super::super::system::file::File;
use super::super::util::cell::DebugCell;

pub trait Light {}

pub struct Sun {
    pub loc: Vec3<f32>,
    pub far: f32,
    pub near: f32,
    pub size: f32,
    pub dir: Vec3<f32>,
    pub vp: Mat4x4<f32>,
}

impl Sun {
    pub fn new(file: &Arc<DebugCell<File>>) -> Self {
        let mut dir = Vec3 {
            x: 1.0,
            y: 0.0,
            z: 0.0,
        };
        let far = file.borrow_mut().read_type();
        let near = file.borrow_mut().read_type();
        let size = file.borrow_mut().read_type();
        let loc = Vec3::new_from_file(file);
        let mut r = Mat3x3::rotation(
            -file.borrow_mut().read_type::<f32>(),
            &Vec3 {
                x: 1.0,
                y: 0.0,
                z: 0.0,
            },
        );
        r *= &Mat3x3::rotation(
            -file.borrow_mut().read_type::<f32>(),
            &Vec3 {
                x: 0.0,
                y: 1.0,
                z: 0.0,
            },
        );
        r *= &Mat3x3::rotation(
            -file.borrow_mut().read_type::<f32>(),
            &Vec3 {
                x: 0.0,
                y: 0.0,
                z: 1.0,
            },
        );
        dir = (&r * &dir).normalized();
        r.scale(size);
        let r = r.to_mat4x4();
        let v = &r * &Mat4x4::translator(&-&loc);
        let vp = &Mat4x4::ortho(1.0, far, near) * &v;
        Sun {
            loc: loc,
            far: far,
            near: near,
            size: size,
            dir: dir,
            vp: vp,
        }
    }
}

impl Light for Sun {}