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import { TARGETHEIGHT, TARGETWIDTH } from './inference.js';
export const centeredBoundingBox = type({
x: 'number',
y: 'number',
w: 'number',
h: 'number'
});
const topLeftBoundingBox = type({
x: 'number',
y: 'number',
width: 'number',
height: 'number'
});
const _rect = type({
x: 'number > 0',
y: 'number > 0',
width: 'number > 0',
height: 'number > 0'
});
const _anyBoundingBox = type.or(centeredBoundingBox, topLeftBoundingBox);
/**
* @typedef {typeof _anyBoundingBox.infer} AnyBoundingBox
* @typedef {typeof topLeftBoundingBox.infer} TopLeftBoundingBox
* @typedef {typeof centeredBoundingBox.infer} CenteredBoundingBox
* @typedef {typeof _rect.infer} Rect
*/
/**
*
* @param {object} param0
* @param {number} param0.x
* @param {number} param0.y
* @returns scaled coordinates
*/
export function coordsScaler({ x: xwise, y: ywise }) {
/**
* @template {AnyBoundingBox} BoundingBox
* @param {BoundingBox} param0
* @returns {BoundingBox}
*/
return ({ x, y, ...wh }) => {
const [newx, newy] = [x * xwise, y * ywise];
if ('width' in wh && 'height' in wh)
return { x: newx, y: newy, width: wh.width * xwise, height: wh.height * ywise };
if (I'w' in wh && 'h' in wh) return { x: newx, y: newy, w: wh.w * xwise, h: wh.h * ywise };
return { x: newx, y: newy, ...wh };
};
}
if (import.meta.vitest) {
const { test, expect } = import.meta.vitest;
test('coordsScaler', () => {
expect(coordsScaler({ x: 2, y: 3 })({ x: 1, y: 2 })).toEqual({ x: 2, y: 6 });
expect(coordsScaler({ x: 2, y: 3 })({ x: 1, y: 2, width: 4, height: 5 })).toEqual({
x: 2,
y: 6,
width: 8,
height: 15
});
});
}
/** @param {undefined | import('./database').Protocol} protocol */
export const toRelativeCoords = (protocol) => {
if (!protocol) throw new Error('No protocol was provided');
return coordsScaler({
x: 1 / (protocol.crop?.infer?.input?.width ?? TARGETWIDTH),
y: 1 / (protocol.crop?.infer?.input?.height ?? TARGETHEIGHT)
});
};
/**
* @param {object} param0
* @param {number} param0.x
* @param {number} param0.y
* @param {number} param0.width
* @param {number} param0.height
*/
export function toCenteredCoords({ x, y, width, height }) {
return {
x: x + width / 2,
y: y + height / 2,
w: width,
h: height
};
}
if (import.meta.vitest) {
const { test, expect } = import.meta.vitest;
test('toCenteredCoords', () => {
expect(toCenteredCoords({ x: 0, y: 0, width: 10, height: 20 })).toEqual({
x: 5,
y: 10,
w: 10,
h: 20
});
});
}
/**
* @param {object} param0
* @param {number} param0.x
* @param {number} param0.y
* @param {number} param0.w
* @param {number} param0.h
*/
export function toTopLeftCoords({ x, y, w, h }) {
return {
x: x - w / 2,
y: y - h / 2,
width: w,
height: h
};
}
if (import.meta.vitest) {
const { test, expect } = import.meta.vitest;
test('toTopLeftCoords', () => {
expect(toTopLeftCoords({ x: 5, y: 10, w: 10, h: 20 })).toEqual({
x: 0,
y: 0,
width: 10,
height: 20
});
});
}
export function boundingBoxIsNonZero(boundingBox) {
return type({
x: 'number > 0',
y: 'number > 0'
})
.and(
type.or(
{
width: 'number > 0',
height: 'number > 0'
},
{
w: 'number > 0',
h: 'number > 0'
}
)
)
.allows(boundingBox);
}
if (import.meta.vitest) {
const { test, expect } = import.meta.vitest;
test('boundingBoxIsNonZero', () => {
expect(boundingBoxIsNonZero({ x: 0, y: 0, width: 10, height: 20 })).toBe(false);
expect(boundingBoxIsNonZero({ x: 5, y: 10, width: 0, height: 20 })).toBe(false);
expect(boundingBoxIsNonZero({ x: 5, y: 10, width: 10, height: 0 })).toBe(false);
expect(boundingBoxIsNonZero({ x: 5, y: 10, width: -1, height: -1 })).toBe(false);
expect(boundingBoxIsNonZero({ x: 5, y: 10, w: -1, h: -1 })).toBe(false);
expect(boundingBoxIsNonZero({ x: 0, y: 0, w: 0, h: 0 })).toBe(false);
expect(boundingBoxIsNonZero({ x: 5, y: 10, w: 10, h: 20 })).toBe(true);
});
}
/**
*
* @param {{x: number, y: number, width: number, height: number}} boundingBox
* @param {{x: number, y: number}} point
* @returns
*/
export function withinBoundingBox(boundingBox, { x, y }) {
if (!boundingBoxIsNonZero(boundingBox)) return false;
const { x: x_box, y: y_box, width, height } = boundingBox;
return x >= x_box && x <= x_box + width && y >= y_box && y <= y_box + height;
}
if (import.meta.vitest) {
const { test, expect, describe } = import.meta.vitest;
describe('withinBoundingBox', () => {
test('works for points inside', () => {
expect(withinBoundingBox({ x: 1, y: 1, width: 10, height: 20 }, { x: 5, y: 10 })).toBe(
true
);
});
test('works for points outside', () => {
expect(withinBoundingBox({ x: 1, y: 1, width: 10, height: 20 }, { x: -1, y: -1 })).toBe(
false
);
});
test('returns false on zero-sized bounding boxes', () => {
expect(withinBoundingBox({ x: 4, y: 5, width: 0, height: 0 }, { x: 4, y: 5 })).toBe(
false
);
});
});
}
/**
*
* @param {AnyBoundingBox} a
* @param {AnyBoundingBox} b
*/
function coordsDifference(a, b) {
let combinedDifference = 0;
combinedDifference += Math.abs(a.x - b.x);
combinedDifference += Math.abs(a.y - b.y);
combinedDifference += Math.abs(('width' in a ? a.width : a.w) - ('width' in b ? b.width : b.w));
combinedDifference += Math.abs(
('height' in a ? a.height : a.h) - ('height' in b ? b.height : b.h)
);
return combinedDifference;
}
if (import.meta.vitest) {
const { test, expect } = import.meta.vitest;
test('coordsDifference', () => {
expect(
coordsDifference(
{ x: 1, y: 1, width: 10, height: 20 },
{ x: 5, y: 10, width: 10, height: 20 }
)
).toBe(13);
expect(coordsDifference({ x: 1, y: 1, w: 10, h: 20 }, { x: 5, y: 10, w: 10, h: 20 })).toBe(
13
);
});
}
/**
*
* @param {AnyBoundingBox} a
* @param {AnyBoundingBox} b
* @param {number} tolerance
*/
export function coordsAreEqual(a, b, tolerance = 0) {
return coordsDifference(a, b) <= tolerance;
}
if (import.meta.vitest) {
const { test, expect } = import.meta.vitest;
test('coordsAreEqual', () => {
expect(
coordsAreEqual(
{ x: 1, y: 1, width: 10, height: 20 },
{ x: 5, y: 10, width: 10, height: 20 }
)
).toBe(false);
expect(coordsAreEqual({ x: 1, y: 1, w: 10, h: 20 }, { x: 5, y: 10, w: 10, h: 20 })).toBe(
false
);
expect(
coordsAreEqual(
{ x: 1, y: 1, w: 10, h: 20 },
{ x: 1.01, y: 1.01, w: 10.01, h: 20.01 },
0.05
)
).toBe(true);
});
}
/**
* Return the 4 corners of a bounding box as (x, y) tuples
* @param {AnyBoundingBox} boundingBox
* @returns {{ topleft: [number, number], topright: [number, number], bottomleft: [number, number], bottomright: [number, number] }}
*/
export function toCorners(boundingBox) {
if (!('width' in boundingBox) || !('height' in boundingBox)) {
return toCorners(toTopLeftCoords(boundingBox));
}
return {
topleft: [boundingBox.x, boundingBox.y],
topright: [boundingBox.x + boundingBox.width, boundingBox.y],
bottomleft: [boundingBox.x, boundingBox.y + boundingBox.height],
bottomright: [boundingBox.x + boundingBox.width, boundingBox.y + boundingBox.height]
};
}
if (import.meta.vitest) {
const { test, expect } = import.meta.vitest;
test('toCorners', () => {
expect(toCorners({ x: 1, y: 1, width: 10, height: 20 })).toEqual({
topleft: [1, 1],
topright: [11, 1],
bottomleft: [1, 21],
bottomright: [11, 21]
});
expect(toCorners({ x: 5, y: 10, w: 10, h: 20 })).toEqual({
topleft: [0, 0],
topright: [10, 0],
bottomleft: [0, 20],
bottomright: [10, 20]
});
});
}
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