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use std; use vec2::Vec2; use vec3::Vec3; use quat::Quat; #[derive(Clone, Copy, Debug, PartialEq)] pub struct Vec4 { pub x: f32, pub y: f32, pub z: f32, pub w: f32, } impl Vec4 { pub fn new(x: f32, y: f32, z: f32, w: f32) -> Vec4 { Vec4 { x, y, z, w, } } pub fn dot(&self, right: Vec4) -> f32 { self.x * right.x + self.y * right.y + self.z * right.z + self.w * right.w } pub fn fill(&mut self, value: f32) { self.x = value; self.y = value; self.z = value; self.w = value; } pub fn length_squared(&self) -> f32 { self.x * self.x + self.y * self.y + self.z * self.z + self.w * self.w } pub fn length(&self) -> f32 { self.length_squared().sqrt() } pub fn normalized(&self) -> Vec4 { let mut length = self.length(); if length == 0.0 { length = 1.0; } Vec4 { x: self.x / length, y: self.y / length, z: self.z / length, w: self.w / length, } } pub fn normalize(&mut self) { *self = self.normalized(); } } impl Default for Vec4 { fn default() -> Vec4 { Vec4 { x: 0.0, y: 0.0, z: 0.0, w: 0.0, } } } impl From<(f32, f32, f32, f32)> for Vec4 { fn from(tuple: (f32, f32, f32, f32)) -> Vec4 { Vec4 { x: tuple.0, y: tuple.1, z: tuple.2, w: tuple.3, } } } impl From<[f32; 4]> for Vec4 { fn from(slice: [f32; 4]) -> Vec4 { Vec4 { x: slice[0], y: slice[1], z: slice[2], w: slice[3], } } } impl From<Vec2> for Vec4 { fn from(vec: Vec2) -> Vec4 { Vec4 { x: vec.x, y: vec.y, z: 0.0, w: 0.0, } } } impl From<Vec3> for Vec4 { fn from(vec: Vec3) -> Vec4 { Vec4 { x: vec.x, y: vec.y, z: vec.z, w: 0.0, } } } impl From<Quat> for Vec4 { fn from(quat: Quat) -> Vec4 { Vec4 { x: quat.x, y: quat.y, z: quat.z, w: quat.w, } } } impl From<f32> for Vec4 { fn from(value: f32) -> Vec4 { Vec4 { x: value, y: value, z: value, w: value, } } } impl std::ops::Index<usize> for Vec4 { type Output = f32; fn index(&self, index: usize) -> &f32 { match index { 0 => &self.x, 1 => &self.y, 2 => &self.z, 3 => &self.w, _ => panic!("Vec4 index out of range!"), } } } impl std::ops::IndexMut<usize> for Vec4 { fn index_mut(&mut self, index: usize) -> &mut f32 { match index { 0 => &mut self.x, 1 => &mut self.y, 2 => &mut self.z, 3 => &mut self.w, _ => panic!("Vec4 index out of range!"), } } } impl std::ops::Add for Vec4 { type Output = Vec4; fn add(self, right: Vec4) -> Vec4 { Vec4 { x: self.x + right.x, y: self.y + right.y, z: self.z + right.z, w: self.w + right.w, } } } impl std::ops::AddAssign for Vec4 { fn add_assign(&mut self, right: Vec4) { self.x += right.x; self.y += right.y; self.z += right.z; self.w += right.w; } } impl std::ops::Sub for Vec4 { type Output = Vec4; fn sub(self, right: Vec4) -> Vec4 { Vec4 { x: self.x - right.x, y: self.y - right.y, z: self.z - right.z, w: self.w - right.w, } } } impl std::ops::SubAssign for Vec4 { fn sub_assign(&mut self, right: Vec4) { self.x -= right.x; self.y -= right.y; self.z -= right.z; self.w -= right.w; } } impl std::ops::Mul<f32> for Vec4 { type Output = Vec4; fn mul(self, right: f32) -> Vec4 { Vec4 { x: self.x * right, y: self.y * right, z: self.z * right, w: self.w * right, } } } impl std::ops::MulAssign<f32> for Vec4 { fn mul_assign(&mut self, right: f32) { self.x *= right; self.y *= right; self.z *= right; self.w *= right; } } impl std::ops::Neg for Vec4 { type Output = Vec4; fn neg(self) -> Vec4 { Vec4 { x: -self.x, y: -self.y, z: -self.z, w: -self.w, } } }