utils/pointerUtils: add missing methds
utils/pointerUtils: add missing methds

getTouchPair, touchAngle, touchAverage, touchBBox, touchDistance

Endika/interact.js,taye/interact.js,adamgruber/interact.js,marian-r/interact.js,marian-r/interact.js,bios21/interact.js,adamgruber/interact.js,bios21/interact.js,Endika/interact.js,taye/interact.js,taye/interact.js