phosphor-crt 0.1.0

A real-time plotter of waveforms, imitating oscillscope CRTs
Documentation 
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use cgmath::Matrix3;
use cgmath::prelude::*;

#[repr(C)]
#[derive(Debug, Clone, Copy)]
pub(crate) struct AffineTransform<T>(Matrix3<T>);

impl Default for AffineTransform<f32> {
    fn default() -> Self {
        AffineTransform(Matrix3::identity())
    }
}

impl AffineTransform<f32> {
    pub fn new() -> Self {
        AffineTransform::default()
    }

    pub fn translate(mut self, x: f32, y: f32) -> Self {
        self.0.z.x += x;
        self.0.z.y += y;
        self
    }

    pub fn scale(self, x: f32, y: f32) -> Self {
        AffineTransform(Matrix3::from_diagonal([x, y, 1.].into()) * self.0)
    }

    pub fn wgpu_mat3x3(&self) -> [[f32; 4]; 3] {
        [
            [self.0.x.x, self.0.x.y, self.0.x.z, 0.],
            [self.0.y.x, self.0.y.y, self.0.y.z, 0.],
            [self.0.z.x, self.0.z.y, self.0.z.z, 0.],
        ]
    }
}