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Move multiplication out of flat-global vector conversion

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The conversion is necessarily linear so...
This commit is contained in:
numzero 2024-06-09 23:23:26 +03:00
parent 2b7ae9485b
commit f3288c7331
1 changed files with 7 additions and 7 deletions
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14
src/bin/flat.rs
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@ -68,13 +68,13 @@ pub fn main() {
gc.stroke_color(Color::Rgba(0.0, 0.0, 0.0, 0.5));
draw_loop(gc, itertools_num::linspace(0.0, 2.0 * PI, 32).skip(1).map(|φ| {
let dir = Vec2::from_angle(φ) * obj.r;
let dir = space.flat_to_global(pos, dir);
let dir = space.flat_to_global(pos) * dir;
pos + dir
}));
gc.stroke_color(Color::Rgba(0.0, 0.5, 1.0, 0.5));
draw_loop(gc, itertools_num::linspace(0.0, 2.0 * PI, 32).skip(1).map(|φ| {
let dir = Vec2::from_angle(φ) * obj.r;
let dir = space.flat_to_global(pos, dir);
let dir = space.flat_to_global(pos) * dir;
space.trace_step(Ray { pos, dir }).pos
}));
gc.stroke_color(Color::Rgba(0.5, 0.0, 1.0, 1.0));
@ -82,7 +82,7 @@ pub fn main() {
let n = obj.r.floor();
let d = obj.r / n;
let dir = Vec2::from_angle(φ);
let dir = space.flat_to_global(pos, dir) * d;
let dir = space.flat_to_global(pos) * dir * d;
space.trace_iter(Ray { pos, dir }).nth(n as usize).unwrap().pos
}));
}
@ -134,12 +134,12 @@ impl Space {
}
}
fn flat_to_global(&self, at: Vec2, v: Vec2) -> Vec2 {
Mat2::from(self.rect.sqrt_at(at).inverse()) * v
fn flat_to_global(&self, at: Vec2) -> Mat2 {
Mat2::from(self.rect.sqrt_at(at).inverse())
}
fn global_to_flat(&self, at: Vec2, v: Vec2) -> Vec2 {
Mat2::from(self.rect.sqrt_at(at)) * v
fn global_to_flat(&self, at: Vec2) -> Mat2 {
Mat2::from(self.rect.sqrt_at(at))
}
/// Выполняет один шаг трассировки. Работает в любой части пространства, но вне Boundary доступны более эффективные методы.