---
title: "Dot Product"
url: "https://help.maxon.net/c4d/en-us/Content/html/COM_REDSHIFT3D_REDSHIFT4C4D_NODES_CORE_RSMATHDOTVECTOR.html"
section_path: "The Node Editor > Redshift Nodes > Redshift Math Nodes > Math Vector Nodes > Dot Product"
element_id: "COM_REDSHIFT3D_REDSHIFT4C4D_NODES_CORE_RSMATHDOTVECTOR"
description: "This page covers the Dot Product node of the Redshift renderer in Cinema 4D. It measures how parallel two vectors are — the mathematical heart of facing …"
---

# Dot Product

> **Note:** **What is it about?**
>
> This page covers the **Dot Product node** of the Redshift renderer in **Cinema 4D**. It measures how parallel two vectors are — the mathematical heart of facing ratios, custom fresnel effects and light-angle masks.

Returns the inner product of *Input 1* and *Input 2* vectors, using the following formula: *Input1*.x \* *Input2*.x + *Input1*.y \* *Input2*.y + *Input1*.z \* *Input2*.z