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pub struct Image {
pub aspect_ratio: f64,
pub width: usize,
pub height: usize,
pub samples_per_pixel: usize,
}
impl Image {
pub fn new(aspect_ratio: f64, width: usize, samples_per_pixel: usize) -> Image {
Image {
aspect_ratio,
width,
height: (width as f64 / aspect_ratio) as usize,
samples_per_pixel,
}
}
}
// TODO: SubImage and Image can probably be the same struct
impl From<&Image> for SubImage {
fn from(image: &Image) -> Self {
SubImage {
x: 0,
y: 0,
width: image.width,
height: image.height,
samples: image.samples_per_pixel,
screen_width: image.width,
screen_height: image.height,
}
}
}
pub struct SubImage {
pub x: usize,
pub y: usize,
pub screen_width: usize,
pub screen_height: usize,
pub width: usize,
pub height: usize,
pub samples: usize,
}
pub trait QuadSplit {
fn quad_split(&self) -> [SubImage; 4];
}
impl QuadSplit for SubImage {
fn quad_split(&self) -> [SubImage; 4] {
let half_w = self.width / 2;
let half_h = self.height / 2;
[
// Top Left
SubImage {
x: self.x,
y: self.y,
width: half_w,
height: half_h,
samples: self.samples,
screen_width: self.screen_width,
screen_height: self.screen_height,
},
// Top Right
SubImage {
x: self.x + half_w,
y: self.y,
width: half_w,
height: half_h,
samples: self.samples,
screen_width: self.screen_width,
screen_height: self.screen_height,
},
// Bottom Left
SubImage {
x: self.x,
y: self.y + half_h,
width: half_w,
height: half_h,
samples: self.samples,
screen_width: self.screen_width,
screen_height: self.screen_height,
},
// Bottom Right
SubImage {
x: self.x + half_w,
y: self.y + half_h,
width: half_w,
height: half_h,
samples: self.samples,
screen_width: self.screen_width,
screen_height: self.screen_height,
},
]
}
}
|
