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jscanify: reorganize

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ColonelParrot 2023-04-13 22:32:45 -04:00
parent 0332acfb90
commit 4439c1a625
1 changed files with 60 additions and 59 deletions
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119
src/jscanify.js
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@ -22,65 +22,6 @@
class jscanify { class jscanify {
constructor() { } constructor() { }
/**
* Calculates the corner points of a contour.
* @param {*} contour contour from {@link findPaperContour}
* @returns object with properties `topLeftCorner`, `topRightCorner`, `bottomLeftCorner`, `bottomRightCorner`, each with `x` and `y` property
*/
getCornerPoints(contour) {
let rect = cv.minAreaRect(contour);
const center = rect.center;
let topLeftCorner;
let topLeftCornerDist = 0;
let topRightCorner;
let topRightCornerDist = 0;
let bottomLeftCorner;
let bottomLeftCornerDist = 0;
let bottomRightCorner;
let bottomRightCornerDist = 0;
for (let i = 0; i < contour.data32S.length; i += 2) {
const point = { x: contour.data32S[i], y: contour.data32S[i + 1] };
const dist = distance(point, center);
if (point.x < center.x && point.y > center.y) {
// top left
if (dist > topLeftCornerDist) {
topLeftCorner = point;
topLeftCornerDist = dist;
}
} else if (point.x > center.x && point.y > center.y) {
// top right
if (dist > topRightCornerDist) {
topRightCorner = point;
topRightCornerDist = dist;
}
} else if (point.x < center.x && point.y < center.y) {
// bottom left
if (dist > bottomLeftCornerDist) {
bottomLeftCorner = point;
bottomLeftCornerDist = dist;
}
} else if (point.x > center.x && point.y < center.y) {
// bottom right
if (dist > bottomRightCornerDist) {
bottomRightCorner = point;
bottomRightCornerDist = dist;
}
}
}
return {
topLeftCorner,
topRightCorner,
bottomLeftCorner,
bottomRightCorner,
};
}
/** /**
* Finds the contour of the paper within the image * Finds the contour of the paper within the image
* @param {*} img image to process * @param {*} img image to process
@ -265,6 +206,66 @@
onComplete(canvas); onComplete(canvas);
}; };
} }
/**
* Calculates the corner points of a contour.
* @param {*} contour contour from {@link findPaperContour}
* @returns object with properties `topLeftCorner`, `topRightCorner`, `bottomLeftCorner`, `bottomRightCorner`, each with `x` and `y` property
*/
getCornerPoints(contour) {
let rect = cv.minAreaRect(contour);
const center = rect.center;
let topLeftCorner;
let topLeftCornerDist = 0;
let topRightCorner;
let topRightCornerDist = 0;
let bottomLeftCorner;
let bottomLeftCornerDist = 0;
let bottomRightCorner;
let bottomRightCornerDist = 0;
for (let i = 0; i < contour.data32S.length; i += 2) {
const point = { x: contour.data32S[i], y: contour.data32S[i + 1] };
const dist = distance(point, center);
if (point.x < center.x && point.y > center.y) {
// top left
if (dist > topLeftCornerDist) {
topLeftCorner = point;
topLeftCornerDist = dist;
}
} else if (point.x > center.x && point.y > center.y) {
// top right
if (dist > topRightCornerDist) {
topRightCorner = point;
topRightCornerDist = dist;
}
} else if (point.x < center.x && point.y < center.y) {
// bottom left
if (dist > bottomLeftCornerDist) {
bottomLeftCorner = point;
bottomLeftCornerDist = dist;
}
} else if (point.x > center.x && point.y < center.y) {
// bottom right
if (dist > bottomRightCornerDist) {
bottomRightCorner = point;
bottomRightCornerDist = dist;
}
}
}
return {
topLeftCorner,
topRightCorner,
bottomLeftCorner,
bottomRightCorner,
};
}
} }
if (typeof module !== "undefined") { if (typeof module !== "undefined") {