pxUnitGetter function
Implementation
PxUnitValueGetter<double> pxUnitGetter(PxUnit pu){
return switch(pu){
PxUnit.vh => (Size viewport) => viewport.height / 100,
PxUnit.vw => (Size viewport) => viewport.width / 100,
PxUnit.vmin => (Size viewport) => min(viewport.height, viewport.width) / 100,
PxUnit.vmax => (Size viewport) => max(viewport.height, viewport.width) / 100,
PxUnit.rpx => (Size viewport) => viewport.width / 750,
PxUnit.px => (Size viewport) => 1,
PxUnit.wpc => (Size viewport) => viewport.width,
PxUnit.hpc => (Size viewport) => viewport.height,
};
}