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import { CSSProperties, useEffect, useRef } from 'react';
import { animated, useSpring } from 'react-spring';
// import { useDrag } from 'react-use-gesture';
interface controlsPropsType {
next: () => void;
previous: () => void;
menu: () => void;
}
export function FullScreenControls({ next, previous, menu }: controlsPropsType) {
return <div className='fullscreenControls posabs a0'>
<div className='control previous' onClick={previous} />
<div className='control menu' onClick={menu} />
<div className='control next' onClick={next} />
</div>;
}
var menuBarPosApi: SpringRef<{ x: number; y: number; }>;
export function MenuBarControls({ next, previous, menu }: controlsPropsType) {
var canvasRef = useRef(null);
var [menuBarSpring, api] = useSpring(() => ({
x: 0,
y: 0,
config: { mass: 1.6, tension: 300, friction: 20 },
}));
menuBarPosApi = api;
var options = {
margin: 48, // screen margin
friction: 0.2, // friction
edgeForce: 0.4, // force outside margin (inwards to edges)
centerForce: 0.4, // force inside margin (outwards to edges)
maxForce: 10, // limit force to not go over this value
doneTolerance: 0.5, // if movement per frame goes below this value the animation is considered done
releaseSlopeAverageCount: 3,
};
var positionHistory: [number, number][] = [];
var slopeAverage: [number, number][] = [];
useEffect(() => {
var canvas = canvasRef.current as HTMLCanvasElement;
var ctx = canvas.getContext('2d');
var physicsObject = {
velocity: [0, 0],
position: [0, 0],
};
var mouseX = 0;
var mouseY = 0;
var mouseDown = false;
function draw() {
positionHistory.push([mouseX, mouseY]);
if (positionHistory.length >= options.releaseSlopeAverageCount + 1) positionHistory.shift();
var box = {
outer: {
x: 0,
y: 0,
width: canvas.width,
height: canvas.height,
},
inner: {
x: options.margin,
y: options.margin,
width: Math.max(0, canvas.width - 2 * options.margin),
height: Math.max(0, canvas.height - 2 * options.margin),
},
};
function findCenter(x: number, y: number): [number, number] {
var ratio = canvas.width / canvas.height;
var coolZone = (Math.abs(ratio - 1) * canvas.height) / 2;
var hw = canvas.width / 2;
var hh = canvas.height / 2;
if (ratio > 1) {
if (x < hw - coolZone) {
return [hw - coolZone, hh];
} else if (x > hw + coolZone) {
return [hw + coolZone, hh];
} else {
return [x, hh];
}
} else if (ratio < 1) {
if (y < hh - coolZone) {
return [hw, hh - coolZone];
} else if (y > hh + coolZone) {
return [hw, hh + coolZone];
} else {
return [hw, y];
}
} else {
return [hw, hh];
}
}
ctx.clearRect(0, 0, canvas.width, canvas.height);
ctx.lineWidth = 2;
var center = findCenter(physicsObject.position[0], physicsObject.position[1]);
var position = physicsObject.position;
var slope = (position[1] - center[1]) / (position[0] - center[0]);
if (Math.abs(slope) < 1) {
var right = position[0] > center[0];
if (right) {
var x = box.inner.x + box.inner.width;
var y = (x - position[0]) * slope + position[1];
} else {
var x = box.inner.x;
var y = (position[0] - x) * -slope + position[1];
}
} else {
var slope = (position[0] - center[0]) / (position[1] - center[1]);
var bottom = position[1] > center[1];
if (bottom) {
var y = box.inner.y + box.inner.height;
var x = (y - position[1]) * slope + position[0];
} else {
var y = box.inner.y;
var x = (position[1] - y) * -slope + position[0];
}
}
var offset = [position[0] - x, position[1] - y];
var outside = position[0] < box.inner.x
|| position[0] > box.inner.x + box.inner.width
|| position[1] < box.inner.y
|| position[1] > box.inner.y + box.inner.height;
offset = offset.map(o => o * options[outside ? 'edgeForce' : 'centerForce']);
var distance = Math.sqrt(offset[0] ** 2 + offset[1] ** 2);
offset = offset.map(o => o * -Math.min(1, options.maxForce / distance));
if (mouseDown) {
physicsObject.position = [mouseX, mouseY];
for (let i = 1; i < positionHistory.length; i++) {
slopeAverage[i - 1] = [
positionHistory[i][0] - positionHistory[i - 1][0],
positionHistory[i][1] - positionHistory[i - 1][1],
];
}
physicsObject.velocity[0] = slopeAverage.reduce((a, b) => a + b[0], 0) / slopeAverage.length;
physicsObject.velocity[1] = slopeAverage.reduce((a, b) => a + b[1], 0) / slopeAverage.length;
} else {
physicsObject.velocity[0] += offset[0];
physicsObject.velocity[1] += offset[1];
}
physicsObject.velocity[0] *= 1 - options.friction;
physicsObject.velocity[1] *= 1 - options.friction;
physicsObject.position[0] += physicsObject.velocity[0];
physicsObject.position[1] += physicsObject.velocity[1];
menuBarPosApi.start({ x: physicsObject.position[0], y: physicsObject.position[1] });
requestAnimationFrame(draw);
}
draw();
function onresize() {
canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
}
onresize();
window.addEventListener('resize', onresize);
canvas.addEventListener('mousemove', e => {
mouseX = e.clientX;
mouseY = e.clientY;
mouseDown = (e.buttons & (1 << 0)) > 0;
});
}, []);
return <div className='fullscreenControls posabs a0'>
<canvas ref={canvasRef} />
<animated.div
className='menuBar'
style={{
'--x': menuBarSpring.x,
'--y': menuBarSpring.y,
} as CSSProperties}
>
</animated.div>
</div>;
}
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