Unity Interface Assignment – IShape Implementation

Overview

This project demonstrates the use of interfaces in C# within Unity.
A common interface IShape is defined and implemented by multiple shape classes.
Each shape provides its own logic for calculating area and perimeter while sharing the same method structure.

The project showcases:

• Interface design
• Class implementation
• Polymorphism
• Console output testing in Unity

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Interface Design

The IShape interface defines behaviors shared by all shapes:

• CalculateArea()
• CalculatePerimeter()
• GetShapeName()

All shape classes must implement these methods.

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Implemented Shapes

The following classes implement the IShape interface:

• Circle
• Trapezium
• Nonagon

Each class:

• Stores its own dimensions
• Implements area and perimeter calculations
• Returns its shape name

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Testing

Testing is performed in InterfaceTestScript.cs.

When the Unity scene starts:

1. Shape objects are instantiated using the IShape interface.
2. Each shape is passed into a testing method.
3. Results are printed to the Unity Console using Debug.Log().

Example console output: Circle | Area: 78.54 | Perimeter: 31.42 Trapezium | Area: 15.00 | Perimeter: 16.00 Nonagon | Area: 24.72 | Perimeter: 18.00

Key Concepts Demonstrated

• Interfaces in C#
• Polymorphism
• Abstraction
• Unity MonoBehaviour lifecycle (Start() method)

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Project Structure

Assets/ └── Scripts/ └── Interfaces/ ├── IShape.cs ├── Circle.cs ├── Trapezium.cs ├── Nonagon.cs └── InterfaceTestScript.cs