pull z layering scale factor into an external constant
pull z layering scale factor into an external constant

zerebubuth/tangram,TitoAgudelo/tangram,zerebubuth/tangram,DHaylock/tangram,tangrams/tangram,xvilan/tangram,tangrams/tangram,ceseale/tangram,taylorhxu/tangram,xvilan/tangram,DHaylock/tangram,DHaylock/tangram,rosamcgee/tangram,TitoAgudelo/tangram,taylorhxu/tangram,taylorhxu/tangram,ceseale/tangram,zerebubuth/tangram,ceseale/tangram,rosamcgee/tangram,xvilan/tangram,TitoAgudelo/tangram,rosamcgee/tangram