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extern crate ncurses;
mod camera;
mod canvas;
use std::{f32::consts::PI, time::Instant};
use cgmath::{Angle, InnerSpace, Matrix3, Rad, Vector3};
use ncurses::*;
use crate::camera::{Buffer, Camera, WIDTH, HEIGHT};
fn main() {
let mut cam = Camera {
position: Vector3 { x: 0.0, y: -0.7, z: 0.0 },
direction: Vector3 { x: 1.0, y: 0.0, z: 0.0 }.normalize(),
light: Vector3 { x: 1.0, y: 1.0, z: -1.0 }.normalize(),
angle: PI / 2.0,
distance: 1.0,
aspect_ratio: 2.0 * HEIGHT as f32 / WIDTH as f32,
brightness: 5.0,
buffer: Buffer([[' '; WIDTH as usize]; HEIGHT as usize]),
time: 0.0,
};
initscr();
let time = 0;
while true {
clear();
flushinp();
// Render
cam.time = (time as f32 / 60.0) * 2.0 * PI;
let timestamp = Instant::now();
cam.render();
addstr(&cam.buffer.to_string());
addstr(&format!("\nRendered in {:?} ({:.0} FPS)\n", timestamp.elapsed(), 1.0 / timestamp.elapsed().as_secs_f64()));
addstr(&format!("Camera: {:?}\n", cam.position));
addstr(&format!("Facing: {:?}\n", cam.direction));
addstr(&format!("Light: {:?}\n", cam.light));
refresh();
// Handle input
let char = getch();
addstr(&format!("\nPressed: {:?}\n", char));
refresh();
let cam_speed = 0.5;
let cam_turn_rate = 30.0;
if char == 106 || char == 74 {
cam.position -= cam.direction * cam_speed;
} else if char == 107 || char == 75 {
cam.position += cam.direction * cam_speed;
} else if char == 104 {
cam.direction = Matrix3::from_angle_z(-Rad::full_turn() / cam_turn_rate) * cam.direction;
} else if char == 108 {
cam.direction = Matrix3::from_angle_z(Rad::full_turn() / cam_turn_rate) * cam.direction;
} else if char == 72 {
cam.position -= Matrix3::from_angle_z(Rad::turn_div_4()) * cam.direction * cam_speed;
} else if char == 76 {
cam.position += Matrix3::from_angle_z(Rad::turn_div_4()) * cam.direction * cam_speed;
} else if char == 70 { // F to reverse camera direction
cam.direction = -cam.direction;
} else if char == 101 { // e to change lights
cam.light = Matrix3::from_angle_z(Rad::turn_div_2() / cam_turn_rate) * cam.light;
} else if char == 69 { // E to change lights vertically
cam.light = Matrix3::from_angle_y(Rad::turn_div_2() / cam_turn_rate) * cam.light;
}
}
endwin();
}
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