drawing_stuff/
drawables.rs

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use crate::canvas::{Canvas, Draw};
use crate::color::RGBA;

#[derive(Debug)]
pub enum AnkerType {
    CENTER,
    CORNER, // top-left
}

#[derive(Debug)]
pub struct Line {
    pub end1: (isize, isize),
    pub end2: (isize, isize),

    pub width: u32,

    pub color: RGBA,
}

impl Draw for Line {
    fn draw(&self, canvas: &mut Canvas) {
        if self.width == 0 {
            return;
        };

        if self.width == 1 {
            canvas.draw_line(
                self.end1.0,
                self.end1.1,
                self.end2.0,
                self.end2.1,
                self.color,
            );
            return;
        }

        canvas.draw_polyline(
            self.end1.0,
            self.end1.1,
            self.end2.0,
            self.end2.1,
            self.width,
            self.color,
        );
    }
}

#[derive(Debug)]
pub struct Circle {
    pub center: (isize, isize),
    pub radius: u32,

    pub solid: bool,

    pub color: RGBA,
}

impl Draw for Circle {
    fn draw(&self, canvas: &mut Canvas) {
        match self.solid {
            true => canvas.draw_circle_solid(self.center.0, self.center.1, self.radius, self.color),
            false => canvas.draw_circle(self.center.0, self.center.1, self.radius, self.color),
        }
    }
}

#[derive(Debug)]
pub struct Square {
    pub anker: (isize, isize),
    pub length: u32,

    pub anker_type: AnkerType,
    pub solid: bool,

    pub color: RGBA,
}

impl Draw for Square {
    fn draw(&self, canvas: &mut Canvas) {
        let vertices = match self.anker_type {
            AnkerType::CENTER => vec![
                (
                    self.anker.0 - self.length as isize / 2,
                    self.anker.1 - self.length as isize / 2,
                ),
                (
                    self.anker.0 + self.length as isize / 2,
                    self.anker.1 - self.length as isize / 2,
                ),
                (
                    self.anker.0 + self.length as isize / 2,
                    self.anker.1 + self.length as isize / 2,
                ),
                (
                    self.anker.0 - self.length as isize / 2,
                    self.anker.1 + self.length as isize / 2,
                ),
            ],
            AnkerType::CORNER => vec![
                self.anker,
                (self.anker.0 + self.length as isize, self.anker.1),
                (
                    self.anker.0 + self.length as isize,
                    self.anker.1 + self.length as isize,
                ),
                (self.anker.0, self.anker.1 + self.length as isize),
            ],
        };

        match self.solid {
            true => canvas.draw_polygon_solid(&vertices, true, self.color),
            false => canvas.draw_polygon(&vertices, self.color),
        }
    }
}

#[derive(Debug)]
pub struct Rectangle {
    pub anker: (isize, isize),
    pub width: u32,
    pub height: u32,

    pub anker_type: AnkerType,
    pub solid: bool,

    pub color: RGBA,
}

impl Draw for Rectangle {
    fn draw(&self, canvas: &mut Canvas) {
        let vertices = match self.anker_type {
            AnkerType::CENTER => vec![
                (
                    self.anker.0 - self.width as isize / 2,
                    self.anker.1 - self.height as isize / 2,
                ),
                (
                    self.anker.0 + self.width as isize / 2,
                    self.anker.1 - self.height as isize / 2,
                ),
                (
                    self.anker.0 + self.width as isize / 2,
                    self.anker.1 + self.height as isize / 2,
                ),
                (
                    self.anker.0 - self.width as isize / 2,
                    self.anker.1 + self.height as isize / 2,
                ),
            ],
            AnkerType::CORNER => vec![
                self.anker,
                (self.anker.0 + self.width as isize, self.anker.1),
                (
                    self.anker.0 + self.width as isize,
                    self.anker.1 + self.height as isize,
                ),
                (self.anker.0, self.anker.1 + self.height as isize),
            ],
        };

        match self.solid {
            true => canvas.draw_polygon_solid(&vertices, true, self.color),
            false => canvas.draw_polygon(&vertices, self.color),
        }
    }
}

#[derive(Debug)]
pub struct Polygon {
    pub vertices: Vec<(isize, isize)>,

    pub clockwise: bool,
    pub solid: bool,

    pub color: RGBA,
}

impl Draw for Polygon {
    fn draw(&self, canvas: &mut Canvas) {
        match self.solid {
            true => canvas.draw_polygon_solid(&self.vertices, self.clockwise, self.color),
            false => canvas.draw_polygon(&self.vertices, self.color),
        }
    }
}