[Home](./index.md) > [@three3d/effect](./effect.md) > [lengthDrawRange\_onBeforeCompile](./effect.lengthdrawrange_onbeforecompile.md) ## lengthDrawRange\_onBeforeCompile variable 针对于一切带有 lineDistance attribute 的几何体的材质的 onBeforeCompile 函数 **Signature:** ```typescript lengthDrawRange_onBeforeCompile: OnBeforeCompile ```