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Classes

• _global_
• BiTran2
• Circle2
• LinaJS
• Matrix3
• Point2
• Polygon2
• Vec2

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Namespace LinaJS

Namespace for global constants and functions.
Defined in: lina.js.

Namespace Summary

Constructor Attributes	Constructor Name and Description
	LinaJS

Field Summary

Field Attributes	Field Name and Description
<static> <constant>	LinaJS.DEG_TO_RAD Factor that converts degree to radians (alias: D2R).
<static> <constant>	LinaJS.EPS Default epsilon value use in some comparisons.
<static> <constant>	LinaJS.EPS_SQUARED Squared LinaJS.EPS.
<static> <constant>	LinaJS.RAD_TO_DEG Factor that converts radians to degree (alias: R2D).

Method Summary

Method Attributes	Method Name and Description
<static>	LinaJS.angleDiff(a1, a2) Return angle from a1 to a2 normalized to [-Pi < a <= +Pi]
<static>	LinaJS.clamp(f, min, max) Return value clamped [min <= f <= max]
<static>	LinaJS.compare(a, b, eps) Return true, if lina.js objects a and b are the same (within eps).
<static>	LinaJS.distancePtLine(pt, ptA, ptB) Return shortest (vertical) distance between a point and a line through ptA/ptB.
<static>	LinaJS.distancePtSegment(pt, ptA, ptB) Return shortest distance between a point and the line segment from ptA to ptB.
<static>	LinaJS.identity33() Return a new Matrix3 (same as 'new Matrix3()').
<static>	LinaJS.intersectMovingCircles(c1, c2, maxT) Intersection of two moving circles.
<static>	LinaJS.linesIntersect(pt1, pt2, pt3, pt4) Return intersection point of line segment pt1/pt2 with with segment pt3/pt4.
<static>	LinaJS.normAngle(a) Return angle normalized to [0 <= a < 2*Pi]
<static>	LinaJS.polarToPt(a, r) Return a point {x:_, y:_} for the given polar coordinates.
<static>	LinaJS.polarToVec(a, r) Return a vector {dx:_, dy:_} for the given polar coordinates.
<static>	LinaJS.random(min, max) Return random float value f, with min <= f <= max').
<static>	LinaJS.randomInt(min, max) Return random integer value i, with min <= i <= max').
<static>	LinaJS.reflectedVector(vec, reflectionNormal) Reflect this vector (in-place) and return this instance.
<static>	LinaJS.rotation33(a) Return a new Matrix3 that represents a rotation about (0/0).
<static>	LinaJS.scale33(fx, fy) Return a new Matrix3 that represents a scaling about (0/0).
<static>	LinaJS.segmentsIntersect(pt1, pt2, pt3, pt4) Return intersection point of line segment pt1/pt2 with with segment pt3/pt4.
<static>	LinaJS.translation33(dx, dy) Return a new Matrix3 that represents a translation.
<static>	LinaJS.vecToPolar(x, y) Return polar coordinates {a:_, r:_} for a cartesian vector or point.

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Parameters:

a1

a2

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Parameters:

f

min

max

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Parameters:

a

{float|Point2|Vec2|Matrix3,JS-Object,...}

b

must have the same type as a

eps

{float} Maximum accepted difference, defaults to 0.00001

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Parameters:

pt

ptA

ptB

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Parameters:

pt

ptA

ptB

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Parameters:

c1

{x, y, vx, vy, r}

c2

{x, y, vx, vy, r}

{float} maxT

Returns:

{ptColl|vColl|t} or null

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Parameters:

pt1

pt2

pt3

pt4

Returns:

{pt|null|undefined} intersection point {x:_, y:_} or null if there is no intersection. undefined is returned, if segments are collinear.

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Parameters:

a

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Parameters:

a

r

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Parameters:

a

r

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random(10); // return 0.00 .. 10.00
random(2, 5); // return 2.00 .. 5.00

Parameters:

min

max

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randomInt(10); // return 0..10
randomInt(2, 5); // return 2..5

Parameters:

min

max

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Parameters:

{Vec2} vec

{Vec2} reflectionNormal

Normal vector pointing from reflection line towards vec.

Returns:

{Vec2}

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Parameters:

a

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Parameters:

fx

fy

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Parameters:

pt1

pt2

pt3

pt4

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Parameters:

dx

dy

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Parameters:

x

y

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