# Create a Shadow Effect
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## Introduction
This article provides an overview into the shadow effect that can be created using Blippbuilder
## Scope
This document includes information on the following:
* Provides an insight into the process of applying **‘Spot Light’** on a 3D model to achieve a shadow effect
* Details of the steps to be followed to position the light to achieve shadows
* Example of a shadow effect
## Process for Applying Spot Light on a 3D Model
Follow the steps below to apply **‘Spot light’** on a 3D model:
{% hint style="info" %}
Lighting is essential for achieving shadows and hence this is a pre-requisite for creating the shadow effect. You can choose any lighting to apply. In this article we would be using ‘Spot Light’ as an example to create a **‘Shadow’**
{% endhint %}
## Add 3D Models
* Drag and drop the following 3D shapes on to the canvas:
1. **Cube:** Will act as the base for the sphere
2. **Sphere:** will act as the object under the ‘Spot Light’
{% hint style="info" %}
In this example, a sphere will be used to achieve the shadow effect. The shadow will be casted on the cube which will act as the stage or base for the sphere
{% endhint %}
Add Cube and Sphere
## Cube
* Define the position and scale of the cube as follows:
**Position:**
| **x-axis** | **y-axis** | **z-axis** |
| ---------- | ---------- | ---------- |
| 0.00 | -1000.00 | -915.35 |
**Rotation:**
| **x-axis** | **y-axis** | **z-axis** |
| ---------- | ---------- | ---------- |
| -90.00 | 0.00 | 0.00 |
**Scale:**
| **x-axis** | **y-axis** | **z-axis** |
| ---------- | ---------- | ---------- |
| 100.00 | 100.00 | 1.00 |
* The following image provides an overview of the design canvas if the above settings of position, scale and rotation are defined for a cube. The cube now appears as a stage/base.
* On top of the cube, the sphere can be noticed.
{% hint style="info" %}
The cube is defined by the line in 'Orange'.
{% endhint %}
Cube
## Sphere
* Define the position and scale of the sphere as follows:
**Position:**
| **x-axis** | **y-axis** | **z-axis** |
| ---------- | ---------- | ---------- |
| 2000.00 | -500.00 | -4000.00 |
**Rotation:**
| **x-axis** | **y-axis** | **z-axis** |
| ---------- | ---------- | ---------- |
| -90.00 | 0.00 | 0.00 |
**Scale:**
| **x-axis** | **y-axis** | **z-axis** |
| ---------- | ---------- | ---------- |
| 5.00 | 5.00 | 5.00 |
* Now the 3D models are ready for lighting
## Apply ‘Spot Light’
Application of lighting is necessary to create shadows. For this example, we would be using ‘Spot Light’ over the 3D model of a sphere to create the shadow effect.
Follow the steps below to apply ‘Spot Light’ on the 3D model of a ‘Sphere’:
Note: we would be using two ‘Spot Lights’ to achieve the shadow effect.
## Add Spot Light 1
* From the left panel of the design canvas, drag-and-drop the ‘Spot Light’ option from the miscellaneous section.
* Define the position, scale and rotation of the ‘Spot Light’ as mentioned below:
**Position:**
| **x-axis** | **y-axis** | **z-axis** |
| ---------- | ---------- | ---------- |
| -2000.00 | 2000.00 | -4000.00 |
**Rotation:**
| **x-axis** | **y-axis** | **z-axis** |
| ---------- | ---------- | ---------- |
| -90.00 | 0.00 | 0.00 |
**Scale:**
| **x-axis** | **y-axis** | **z-axis** |
| ---------- | ---------- | ---------- |
| 5.00 | 5.00 | 5.00 |
* From the right panel of the design canvas, define the color of the ‘Spot Light’ to blue. You can find this option under the **‘Basic Properties’**
Spot Light
Add Spotlight
## Add Spot Light 2
* From the left panel of the design canvas, drag-and-drop the ‘Spot Light’ option from the miscellaneous section.
* Define the position, scale and rotation of the ‘Spot Light’ as mentioned below:
**Position:**
| **x-axis** | **y-axis** | **z-axis** |
| ---------- | ---------- | ---------- |
| 2000.00 | 2000.00 | -4000.00 |
**Rotation:**
| **x-axis** | **y-axis** | **z-axis** |
| ---------- | ---------- | ---------- |
| -90.00 | 0.00 | 0.00 |
**Scale:**
| **x-axis** | **y-axis** | **z-axis** |
| ---------- | ---------- | ---------- |
| 5.00 | 5.00 | 5.00 |
* From the right panel of the design canvas, define the color of the ‘Spot Light’ to pink. You can find this option under the **‘Basic Properties’**
Shadow Effect
## Animation
The shadow effect can be seen as a ‘Black Shadow’ under the pink sphere.
If motion effects of ‘Rotation’ is applied on to the ‘Spot Lights’ the Shadow effect can be visually more appealing.
Example:
Refer image below (Before Animation)
Before Animation
Refer image below (After Animation)
After Animation
{% hint style="info" %}
Shadow casting is dynamically updated to region in front of camera.
{% endhint %}
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