* calculate the distance between two vectors * @param {Vector2d} v1 * @param {Vector2d} v2 * @return {number} The distance

* linear interpolation of two values with given increase * @param {number} start * @param {number} end * @param {number} amount * @return

* Calculate apex angle of triangle * @return {number} apex angle in degrees

* radians to degree conversion * @param {number} radians * @return {number} degree value

* Main recognizer instance * @param {number[]} vertexAngles Apex angles you want to track * @param {Object} options Configuration options

* New match for triangle recognizer * @param {number} index index of matched angle * @param {number} matchedAngle the matched apex angle (not th

* Recognize triangle objects within a set of given points * @param {Vector2d[]} points Set of points for recognizer to analyze * @return {Matche

* Calculate altitude of triangle * @return {number} altitude

* Find apex point * @return {Vector2d} apex point

* Find apex point * @return {Vector2d} apex point

* Calculate apex angle of triangle * @return {number} apex angle in degrees

* Calculate center point * @return {Vector2d} center point

* Calculate center point * @return {Vector2d} center point

* Calculate orientation of triangle * @return {number} orientation in degrees

* Calculate orientation of triangle * @return {number} orientation in degrees

* Calculate width of triangle * @return {number} width