public
class
MathCalc
extends Object| java.lang.Object | |
| ↳ | com.mapsted.positioning.MathCalc |
Summary
| Public Constructors | |||||||||||
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| MathCalc() | |||||||||||
| Public Methods | |||||||||||
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| static int | argMax(ArrayList<Double> arrayList) | ||||||||||
| static int | argMin(ArrayList<Double> arrayList) | ||||||||||
| static double |
average(List<Double> array)
Calcalate the average of a list of numbers.
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| static float | averageF(List<Float> array) | ||||||||||
| static Mercator | centroid(MercatorVector boundary) | ||||||||||
| static double | distFromPointToLineSegment(Mercator pt0, Mercator l1, Mercator l2) | ||||||||||
| static double |
distance(IMercator A, IMercator B)
Calculate the distance between two points.
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| static Double |
distanceToCurrentUserPosition(IMercator point, CoreApi coreApi)
Calculate the distance between the current user's position to the point.
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| static float |
distanceWithFloorPenalty(CoreApi coreApi, IMercatorZone locA, IMercatorZone locB)
Returns approximate distance between two locations, roughly taking into account floor changes
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| static Float | distanceWithFloorPenaltyFromUser(CoreApi coreApi, IMercatorZone loc) | ||||||||||
| static MinMax |
getMinMax(ArrayList<Double> arrayList)
Gets the minimum and maximum value from an array list.
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| static List<Mercator> |
lineIntersectCircle(LineEqn lineEqn, IMercator circlePt, float r)
Finds the point(s) of intersection between a circle and a line
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| static List<Mercator> |
lineIntersectCircle(IMercator pt1, IMercator pt2, IMercator circlePt, float r)
Finds the point(s) of intersection between a circle and a line
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| static Mercator |
lineIntersectCircleFarthestFromPt1(IMercator pt1, IMercator pt2, IMercator circlePt, float r)
Finds the point of intersection between a circle and a line.
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| static Mercator | lineIntersection(LineEqn line1, LineEqn line2) | ||||||||||
| static LineEqn | linearFit(IMercator p0, IMercator p1) | ||||||||||
| static double[] | matrixTimesVector(double[][] M, double[] X) | ||||||||||
| static float[] | matrixTimesVector(float[][] M, float[] X) | ||||||||||
| static double |
max(ArrayList<Double> arrayList)
Finds the maximum value from a list.
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| static double |
min(ArrayList<Double> arrayList)
Finds the minimum value from an array of numbers.
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| static IdxVal | minIdxVal(ArrayList<Double> arrayList) | ||||||||||
| static double | mod(double x, double y) | ||||||||||
| static Mercator | projPointOntoLine(Mercator pt0, LineEqn lineEqn) | ||||||||||
| static double |
rotationAngle(Mercator loc1, Mercator loc2)
Returns angle between two locations in radians clockwise from North
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| static List<Double> | solveQuadraticEquation(double a, double b, double c) | ||||||||||
| static double |
sum(List<Double> array)
Calculate the sum of a list of numbers.
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[Expand]
Inherited Methods | |||||||||||
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From class
java.lang.Object
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Public Constructors
public MathCalc ()
Public Methods
public static int argMax (ArrayList<Double> arrayList)
public static int argMin (ArrayList<Double> arrayList)
public static double average (List<Double> array)
Calcalate the average of a list of numbers.
Parameters
| array | a list of numbers. |
|---|
Returns
- return the average value.
public static float averageF (List<Float> array)
public static Mercator centroid (MercatorVector boundary)
public static double distFromPointToLineSegment (Mercator pt0, Mercator l1, Mercator l2)
public static double distance (IMercator A, IMercator B)
Calculate the distance between two points.
Parameters
| A | one point in the map. |
|---|---|
| B | another point in the map. |
Returns
- return the distance between two points.
public static Double distanceToCurrentUserPosition (IMercator point, CoreApi coreApi)
Calculate the distance between the current user's position to the point. It will return null if the current position is not yet set
Parameters
| point | a point in the map. |
|---|
Returns
- return the distance between the current user's position to the point in meters.
public static float distanceWithFloorPenalty (CoreApi coreApi, IMercatorZone locA, IMercatorZone locB)
Returns approximate distance between two locations, roughly taking into account floor changes
public static MinMax getMinMax (ArrayList<Double> arrayList)
Gets the minimum and maximum value from an array list.
Parameters
| arrayList | The list where to do the search. |
|---|
Returns
- Returns the min an max within a MinMax object. See MinMax
public static List<Mercator> lineIntersectCircle (LineEqn lineEqn, IMercator circlePt, float r)
Finds the point(s) of intersection between a circle and a line
Parameters
| lineEqn | equation of the line |
|---|---|
| circlePt | circle center point |
| r | circle radius |
Returns
- returns point(s) of intersection
public static List<Mercator> lineIntersectCircle (IMercator pt1, IMercator pt2, IMercator circlePt, float r)
Finds the point(s) of intersection between a circle and a line
Parameters
| pt1 | line point 1 |
|---|---|
| pt2 | line point 2 |
| circlePt | circle center point |
| r | circle radius |
Returns
- returns point(s) of intersection
public static Mercator lineIntersectCircleFarthestFromPt1 (IMercator pt1, IMercator pt2, IMercator circlePt, float r)
Finds the point of intersection between a circle and a line. Only returns one point, uses pt1 to disambiguate, if necessary
Parameters
| pt1 | line point 1 (will return point farthest from this one) |
|---|---|
| pt2 | line point 2 |
| circlePt | circle center point |
| r | circle radius |
Returns
- returns point of intersection furthest from pt1
public static Mercator lineIntersection (LineEqn line1, LineEqn line2)
public static LineEqn linearFit (IMercator p0, IMercator p1)
public static double[] matrixTimesVector (double[][] M, double[] X)
public static float[] matrixTimesVector (float[][] M, float[] X)
public static double max (ArrayList<Double> arrayList)
Finds the maximum value from a list.
Parameters
| arrayList | The list where to do the search. |
|---|
Returns
- Return the maximum value from the list.
public static double min (ArrayList<Double> arrayList)
Finds the minimum value from an array of numbers.
Parameters
| arrayList | The list where to do the search. |
|---|
Returns
- Return the minimum value from the list.
public static IdxVal minIdxVal (ArrayList<Double> arrayList)
public static double mod (double x, double y)
public static Mercator projPointOntoLine (Mercator pt0, LineEqn lineEqn)
public static double rotationAngle (Mercator loc1, Mercator loc2)
Returns angle between two locations in radians clockwise from North
Parameters
| loc1 | one point in the map |
|---|---|
| loc2 | another point in the map |
public static List<Double> solveQuadraticEquation (double a, double b, double c)
public static double sum (List<Double> array)
Calculate the sum of a list of numbers.
Parameters
| array | a list of numbers. |
|---|
Returns
- return total number added up.