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|
use crate::{
block::Block,
format::ser::map_scalar8,
frame::Frame,
helpers::vector::Vec2,
helpers::{matrix::Mat2, pixel::Pixel},
view::View,
};
impl View<&mut Frame> {
pub fn draw_box(&mut self, color: Pixel) {
let w = self.size.x;
let h = self.size.y;
for x in 0..w {
self[(x, 0)] = color;
self[(x, h - 1)] = color;
}
for y in 0..h {
self[(0, y)] = color;
self[(w - 1, y)] = color;
}
}
}
impl Frame {
pub fn draw_line(&mut self, start: Vec2<f32>, end: Vec2<f32>, color: Pixel) {
let diff = end - start;
let len = (diff.x * diff.x + diff.y * diff.y).sqrt();
let normal = Vec2 {
x: diff.x / len,
y: diff.y / len,
};
let mut cursor = start.clone();
let mut lc = 0.0;
while lc < len {
self.set(cursor.into(), color);
lc += 0.5;
cursor = cursor + normal.scale(0.5);
}
}
}
impl Pixel {
pub const RED: Pixel = Pixel { r: 255, g: 0, b: 0 };
pub const GREEN: Pixel = Pixel { r: 0, g: 255, b: 0 };
pub const BLUE: Pixel = Pixel { r: 0, g: 0, b: 255 };
pub const MAGENTA: Pixel = Pixel {
r: 255,
g: 0,
b: 255,
};
pub const CYAN: Pixel = Pixel {
r: 0,
g: 255,
b: 255,
};
}
pub fn draw_debug(block: &Block, mut target: View<&mut Frame>) {
match &block {
Block::Literal(_) | Block::CompressedLiteral(_) => {
target.draw_box(Pixel::GREEN);
}
Block::Split(box [a, b]) => {
let [at, bt] = target.split_mut_unsafe();
draw_debug(a, at);
draw_debug(b, bt);
}
Block::Reference { translation } => {
target.draw_box(Pixel::BLUE);
target.frame.draw_line(
target.center().into(),
(target.center() + *translation).into(),
Pixel::RED,
)
}
Block::AdvancedReference(r) => {
let mat = Mat2 {
a: map_scalar8(r.transform.a),
b: map_scalar8(r.transform.b),
c: map_scalar8(r.transform.c),
d: map_scalar8(r.transform.d),
};
let translation = Vec2 {
x: map_scalar8(r.translation.x),
y: map_scalar8(r.translation.y),
};
let halfsize = Into::<Vec2<f32>>::into(target.size).scale(0.5);
let transform = |p| translation + mat.transform(p - halfsize) + halfsize;
let (tl, tr, bl, br) = (
transform(Vec2::<f32>::ZERO) + target.offset.into(),
transform(target.size.x_only().into()) + target.offset.into(),
transform(target.size.y_only().into()) + target.offset.into(),
transform(target.size.into()) + target.offset.into(),
);
target.draw_box(Pixel::CYAN);
target.frame.draw_line(tl, tr, Pixel::MAGENTA);
target.frame.draw_line(tr, br, Pixel::MAGENTA);
target.frame.draw_line(bl, br, Pixel::MAGENTA);
target.frame.draw_line(tl, bl, Pixel::MAGENTA);
}
};
}
|
