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