[Home](./index.md) > [@three3d/effect](./effect.md) > [lengthDrawRangeModifier](./effect.lengthdrawrangemodifier.md) ## lengthDrawRangeModifier() function 用于一切带有 lineDistance attribute 的几何体的材质的长度范围渲染的材质修改器 **Signature:** ```typescript export declare function lengthDrawRangeModifier(material: M): ModifiedMaterial; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | material | M | | **Returns:** [ModifiedMaterial](./effect.modifiedmaterial.md)<M, { invert: boolean; enableStart: boolean; enableEnd: boolean; startLength: number; endLength: number; }> ## Remarks 材质被修改后可具备设置渲染指定长度范围内的线的功能