<OGetLex v="Math" />
<OReg v="2" />          //reg2
<OReg v="1" />
<OGetProp v="position" />   //reg1.position
<OpAdd />           //reg2+reg1.position
<OGetLex v="Math" />
<OCallProperty v="PI" nargs="0"/>//Math.PI
<OpDiv />           //(reg2+reg1.position)/Math.PI
<OSmallInt v="4" />
<OpDiv />           //((reg2+reg1.position)/Math.PI)/4
<OCallProperty v="sin" nargs="1"/>//Math.sin(((reg2+reg1.position)/Math.PI)/4)