Function
| Static Public Summary | ||
| public |
ccw allows to know if traveling from P0 to P1 to P2 we turn counterclockwise assuming we are in cartesian space where X is directed to right and Y axis goes up and assuming the 3 points are distinct points if any points are identical ccw wil trow an error from p. |
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fixDec(n: *) |
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getDegrees(angle: *, angleSystem: *) |
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getGradians(angle: *, angleSystem: *) |
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getRadians(angle: *, angleSystem: *) |
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isNumeric(n: *) |
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| public |
roundNumber(num: number | string, precision: number): number Rounds number to a given decimal precision |
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Static Public
public ccw(P0: Point, P1: Point, P2: Point): Object source
import {ccw} from 'cgil-geom2d/src/ccw.js'ccw allows to know if traveling from P0 to P1 to P2 we turn counterclockwise assuming we are in cartesian space where X is directed to right and Y axis goes up and assuming the 3 points are distinct points if any points are identical ccw wil trow an error from p. 350 of Book : Algorithms in C++ by Robert Sedgewick Addison-Wesley ISBN 0-201-51059-6 here are some examples : Point.ccw(P(0,0), P(2,0), P(2,3)) // should return this Object : {'counterClockwise': true, 'allPointsAreColinear': false, 'value': 1}
Point.ccw(PP(0,0), P(2,0), P(2,-3)) // should return this Object : {'counterClockwise': false, 'allPointsAreColinear': false, 'value': -1}
let {counterClockwise, allPointsAreColinear, value} = Point.ccw(Point(0, 0.3), Point(1, 0.6), Point(2, 0.9)) will give you 'counterClockwise': true, 'allPointsAreColinear': true, 'value': 1 have a look on my unit test in Point.spec.js for more examples
Return:
| Object | 1 when turn is counterclockwise, -1 if not, and 0 when P2 colinear in segment between P0 and P1 |
public fixDec(n: *) source
import {fixDec} from 'cgil-geom2d/src/utils.js'Params:
| Name | Type | Attribute | Description |
| n | * |
public getDegrees(angle: *, angleSystem: *) source
import {getDegrees} from 'cgil-geom2d/src/utils.js'Params:
| Name | Type | Attribute | Description |
| angle | * | ||
| angleSystem | * |
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public getGradians(angle: *, angleSystem: *) source
import {getGradians} from 'cgil-geom2d/src/utils.js'Params:
| Name | Type | Attribute | Description |
| angle | * | ||
| angleSystem | * |
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public getRadians(angle: *, angleSystem: *) source
import {getRadians} from 'cgil-geom2d/src/utils.js'Params:
| Name | Type | Attribute | Description |
| angle | * | ||
| angleSystem | * |
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public isNumeric(n: *) source
import {isNumeric} from 'cgil-geom2d/src/utils.js'Params:
| Name | Type | Attribute | Description |
| n | * |