76 lines
2.3 KiB
JavaScript
76 lines
2.3 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.getAngledRectangleWidth = void 0;
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exports.normalizeAngle = normalizeAngle;
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exports.rectWithPoints = exports.rectWithCoords = void 0;
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var rectWithPoints = (_ref, _ref2) => {
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var {
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x: x1,
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y: y1
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} = _ref;
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var {
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x: x2,
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y: y2
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} = _ref2;
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return {
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x: Math.min(x1, x2),
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y: Math.min(y1, y2),
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width: Math.abs(x2 - x1),
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height: Math.abs(y2 - y1)
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};
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};
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/**
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* Compute the x, y, width, and height of a box from two reference points.
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* @param {Object} coords x1, x2, y1, and y2
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* @return {Object} object
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*/
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exports.rectWithPoints = rectWithPoints;
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var rectWithCoords = _ref3 => {
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var {
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x1,
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y1,
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x2,
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y2
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} = _ref3;
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return rectWithPoints({
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x: x1,
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y: y1
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}, {
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x: x2,
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y: y2
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});
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};
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/** Normalizes the angle so that 0 <= angle < 180.
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* @param {number} angle Angle in degrees.
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* @return {number} the normalized angle with a value of at least 0 and never greater or equal to 180. */
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exports.rectWithCoords = rectWithCoords;
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function normalizeAngle(angle) {
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return (angle % 180 + 180) % 180;
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}
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/** Calculates the width of the largest horizontal line that fits inside a rectangle that is displayed at an angle.
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* @param {Object} size Width and height of the text in a horizontal position.
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* @param {number} angle Angle in degrees in which the text is displayed.
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* @return {number} The width of the largest horizontal line that fits inside a rectangle that is displayed at an angle.
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*/
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var getAngledRectangleWidth = exports.getAngledRectangleWidth = function getAngledRectangleWidth(_ref4) {
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var {
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width,
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height
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} = _ref4;
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var angle = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
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// Ensure angle is >= 0 && < 180
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var normalizedAngle = normalizeAngle(angle);
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var angleRadians = normalizedAngle * Math.PI / 180;
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/* Depending on the height and width of the rectangle, we may need to use different formulas to calculate the angled
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* width. This threshold defines when each formula should kick in. */
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var angleThreshold = Math.atan(height / width);
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var angledWidth = angleRadians > angleThreshold && angleRadians < Math.PI - angleThreshold ? height / Math.sin(angleRadians) : width / Math.cos(angleRadians);
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return Math.abs(angledWidth);
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}; |