map static method
Maps a value from one range to another.
Given a srcValue
, srcMin
, srcMax
, dstMin
, and dstMax
, maps the
srcValue
from the srcMin
-srcMax
range to the dstMin
-dstMax
range.
Example:
final srcValue = 50;
final srcMin = 0;
final srcMax = 100;
final dstMin = 0;
final dstMax = 255;
final mappedValue = Math.map(srcValue, srcMin, srcMax, dstMin, dstMax);
print(mappedValue); // 127.5
Implementation
@pragma("vm:prefer-inline")
static double map(
double srcValue,
double srcMin,
double srcMax,
double dstMin,
double dstMax,
) {
final norm = Math.norm(srcValue, srcMin, srcMax);
return Math.lerp(dstMin, dstMax, norm);
}