MathHelper

Page Summary

• The MathHelper class provides static functions for common mathematical operations.

• It includes methods for comparing floats with tolerance (almostEqualRelativeAndAbs), clamping values within a range (clamp), and linear interpolation (lerp).

• These functions are designed to simplify common math tasks in AR development.

• The class is part of the Sceneform library and helps with tasks like comparing float values, clamping them within bounds, and smooth transitions between values using interpolation.

public class MathHelper

Static functions for common math operations.

Public Constructors

MathHelper()

Public Methods

static boolean	almostEqualRelativeAndAbs(float a, float b) Returns true if two floats are equal within a tolerance.
static float	clamp(float value, float min, float max) Clamps a value between a minimum and maximum range.
static float	lerp(float a, float b, float t) Linearly interpolates between a and b by a ratio.

Inherited Methods

From class java.lang.Object

Object	clone()
boolean	equals(Object arg0)
void	finalize()
final Class<?>	getClass()
int	hashCode()
final void	notify()
final void	notifyAll()
String	toString()
final void	wait(long arg0, int arg1)
final void	wait(long arg0)
final void	wait()

Public Constructors

public MathHelper ()

Public Methods

public static boolean almostEqualRelativeAndAbs (float a, float b)

Returns true if two floats are equal within a tolerance. Useful for comparing floating point numbers while accounting for the limitations in floating point precision.

Parameters

a
b

public static float clamp (float value, float min, float max)

Clamps a value between a minimum and maximum range.

Parameters

value
min
max

public static float lerp (float a, float b, float t)

Linearly interpolates between a and b by a ratio.

Parameters

a	the beginning value
b	the ending value
t	ratio between the two floats

Returns

• interpolated value between the two floats