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|
pub struct LabelFormat {
pub buffer: Vec<u16>,
pub width: usize,
pub height: usize,
}
impl LabelFormat {
pub fn get_left(&self, x: usize, y: usize) -> Option<u16> {
if x > 0 {
return Some(self.buffer[(x-1) + y * self.width]);
}
return None;
}
pub fn get_right(&self, x: usize, y: usize) -> Option<u16> {
if (x+1) < self.width {
return Some(self.buffer[(x+1) + y * self.width]);
}
return None;
}
pub fn get_up(&self, x: usize, y: usize) -> Option<u16> {
if y > 0 {
return Some(self.buffer[x + (y-1) * self.width]);
}
return None;
}
pub fn get_down(&self, x: usize, y: usize) -> Option<u16> {
if (y+1) < self.height {
return Some(self.buffer[x + (y+1) * self.width]);
}
return None;
}
pub fn display(&self, include_space: bool) {
for y in 0..self.height {
for x in 0..self.width {
print!("{:04X}", self.buffer[x + y*self.width]);
if include_space {
print!(" ");
}
}
println!();
}
}
pub fn idilate(&mut self) {
let dilated = self.dilate();
self.buffer = dilated.buffer;
}
pub fn dilate(&self) -> LabelFormat {
let width = self.width;
let height = self.height;
let mut output_buffer = vec![0u16; width*height];
for y in 0..height {
for x in 0..width {
let index = x + y * width;
let current_color = self.buffer[index];
if current_color != 0 {
output_buffer[index] = current_color;
continue;
}
if let Some(color) = self.get_up(x,y) {
if color != 0 {
output_buffer[index] = color;
continue;
}
}
if let Some(color) = self.get_right(x,y) {
if color != 0 {
output_buffer[index] = color;
continue;
}
}
if let Some(color) = self.get_down(x,y) {
if color != 0 {
output_buffer[index] = color;
continue;
}
}
if let Some(color) = self.get_left(x,y) {
if color != 0 {
output_buffer[index] = color;
continue;
}
}
}
}
LabelFormat {
buffer: output_buffer,
width,
height,
}
}
pub fn ierode(&mut self) {
let eroded = self.erode();
self.buffer = eroded.buffer;
}
pub fn erode(&self) -> LabelFormat {
let width = self.width;
let height = self.height;
let mut output_buffer = vec![0u16; width*height];
for y in 0..height {
for x in 0..width {
let index = x + y * width;
let current_color = self.buffer[index];
if current_color == 0 {
continue;
}
if let Some(color) = self.get_up(x,y) {
if color == 0 {
continue;
}
}
if let Some(color) = self.get_right(x,y) {
if color == 0 {
continue;
}
}
if let Some(color) = self.get_down(x,y) {
if color == 0 {
continue;
}
}
if let Some(color) = self.get_left(x,y) {
if color == 0 {
continue;
}
}
output_buffer[index] = current_color;
}
}
LabelFormat {
buffer: output_buffer,
width,
height,
}
}
pub fn icloseup(&mut self, n: usize) {
for _ in 0..n {
self.ierode();
}
for _ in 0..n {
self.idilate();
}
}
pub fn closeup(&self, n: usize) -> LabelFormat {
let mut x = self.erode();
x.icloseup(n-1);
x.idilate();
x
}
pub fn ifill(&mut self, n: usize) {
for _ in 0..n {
self.idilate();
}
for _ in 0..n {
self.ierode();
}
}
pub fn fill(&self, n: usize) -> LabelFormat {
let mut x = self.dilate();
x.icloseup(n-1);
x.ierode();
x
}
pub fn dump(&self, filename: &str) -> Result<(), std::io::Error> {
crate::binfile::dump_u16_vec(filename, self.buffer.clone())
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn label_morphology_test() {
const DIM: usize = 6;
let mut test_data = LabelFormat {
buffer: vec![0u16; DIM*DIM],
width: DIM,
height: DIM,
};
test_data.buffer[2+3*DIM] = 1;
test_data.buffer[3+3*DIM] = 1;
test_data.buffer[4+3*DIM] = 2;
test_data.display(true);
println!();
let dilated = test_data.dilate();
dilated.display(true);
println!();
let restored = dilated.erode();
restored.display(true);
}
#[test]
fn mutable_morphology_test() {
const DIM: usize = 6;
let mut test_data = LabelFormat {
buffer: vec![0u16; DIM*DIM],
width: DIM,
height: DIM,
};
test_data.buffer[2+3*DIM] = 1;
test_data.buffer[3+3*DIM] = 1;
test_data.buffer[4+3*DIM] = 2;
test_data.display(true);
println!();
test_data.idilate();
test_data.display(true);
println!();
test_data.ierode();
test_data.display(true);
println!();
}
}
|
