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use macroquad::prelude::*;
#[derive(Debug, Copy, Clone)]
pub struct Viewport {
pub position: Vec2,
pub size: Vec2,
pub scale: f32,
}
impl Viewport {
pub const FRUSTUM_PADDING: f32 = 25.0;
pub fn to_screen_space(&self, position: Vec2) -> Vec2 {
(position - self.position) * self.scale
}
pub fn to_world_space(&self, position: Vec2) -> Vec2 {
self.position + (position / self.scale)
}
pub fn get_rect(&self) -> Rect {
Rect::new(self.position.x, self.position.y, self.size.x, self.size.y)
}
pub fn get_center(&self) -> Vec2 {
self.position + self.size / 2.0
}
pub fn get_frustum(&self) -> Rect {
let padding = Self::FRUSTUM_PADDING;
let mut frustum = self.get_rect();
frustum.x -= padding;
frustum.y -= padding;
frustum.w += padding * 2.0;
frustum.h += padding * 2.0;
frustum
}
}