MathUtils.mapLinear()

MathUtils.mapLinear() is a method provided by the Three.js library. It is used to map a given value from one range to another.

Syntax

The syntax for MathUtils.mapLinear() is as follows:

THREE.MathUtils.mapLinear( value, oldMin, oldMax, newMin, newMax )

Parameters

The parameters required for MathUtils.mapLinear() are as follows:

Return Value

MathUtils.mapLinear() returns the mapped value. This value will be within the range of newMin and newMax.

Example

Here is an example to demonstrate the usage of MathUtils.mapLinear():

let value = 50;
let oldMin = 0;
let oldMax = 100;
let newMin = 0;
let newMax = 1;

let mappedValue = THREE.MathUtils.mapLinear(value, oldMin, oldMax, newMin, newMax);

console.log(mappedValue); // Output: 0.5

In this example, the input value 50 is within the range of oldMin (0) and oldMax (100). We want to remap this value to a new range between newMin (0) and newMax (1).

Using MathUtils.mapLinear(), we get the mapped value of 0.5. This is because 50 is exactly at the middle of the original range 0-100, and therefore it will be approximately halfway between 0 and 1 in the new range.

Conclusion

MathUtils.mapLinear() is a useful method provided by the Three.js library for mapping values from one range to another. Understanding its usage can help make it easier to work with 3D models and animations.