2. Computer Aided design

WEEK 2

Computer Aided design

Task for this week:

• 2D design ( Raster and Vector )
• 3D DESIGN
• Audio Video
• AI

Vector vs Raster ?

Vector and Raster graphics are two different ways of representing images in digital format.

Vector graphics are made up of paths, which are defined by a start and end point, along with other points, curves, and angles along the way. These paths can be easily resized without losing quality or becoming pixelated, as they are defined mathematically. They are most commonly used for logos, illustrations, and type.

Raster graphics, on the other hand, are made up of pixels arranged in a grid. Each pixel has a specific color value and cannot be resized without losing quality. Raster graphics are best suited for photographs and other images with smooth color transitions, as they can represent a wide range of colors and shades.

In summary, vector graphics are scalable and ideal for illustrations, while raster graphics are better for photographs due to their ability to represent a wide range of colors.

following is a simple illustration from web showing the difference between vector and raster graphics. when the image becomes blurred or pixelated, it’s most likely a raster file.

GIMP

Download Gimp Using below link .

GIMP - DownloadsThe official download page for all things GIMP! Please only use the official binaries provided here unless you really, really know what you’re doing (it’s the only way to be safe). We try to provide binaries in-time with regular releases, but may occasionally be delayed as the packagers …https://www.gimp.org/downloads/

For an open source software the amount of features gimp has to offer is really impressive

As a first-time GIMP user, I had a good experience. Here are the steps I followed:

Uploaded my photo by going to File > Open > selecting the image. Step 2: Clicked on Filters at the top > Dropped down to Artistic > Selected Cartoon. The cartoon version of your image is ready

PHOTOPEA

Photopea is a free online image editor that serves as a powerful alternative to Adobe Photoshop. It runs directly in your web browser, requiring no installation, and supports most common image formats including PSD files. The interface is remarkably similar to Photoshop, making it an excellent choice for both beginners and experienced designers.

You can access Photopea through the following link:

https://www.photopea.com

Step-by-Step Project Report: Image Editing in Photopea

1. Initial Planning

Started with the intention to create an engaging image manipulation project using Photopea’s features.

2. Resource Gathering

• Searched for source material on Freepik
• Initially looked for Mickey Mouse images (unavailable due to subscription requirements)
• Found and downloaded an alternative free PSD file

3. Color Modification Process

Layer Selection:

• Clicked on specific elements (dress and hair) to select their respective layers
• Double-clicked inside the layer box to access color modification options
• Utilized the color panel to make precise adjustments to both dress and hair colors

4. File Management

Export Process:

• Saved the modified image in PNG format to preserve transparency
• This format choice was crucial for the next phase of the project

5. Image Integration

Composition Steps:

• Imported the background photo into Photopea
• Embedded the edited PNG file onto the background
• Positioned the element appropriately within the composition

6. Shadow Enhancement

Creating Realistic Shadows:

• Right-clicked on the layer containing the embedded image
• Selected “Blending Options” from the context menu
• Accessed the Drop Shadow feature
• Fine-tuned shadow parameters (opacity, distance, spread, and size) to achieve natural blending with the table surface

This methodical approach resulted in a professionally edited image with seamless integration between the modified element and the background photo.

FLAMESHOT

Flameshot is a powerful screenshot tool for Linux that offers versatile annotation features. It allows users to capture, edit, and annotate screenshots with various tools like arrows, text, and highlighting. The simple yet feature-rich interface makes it an excellent choice for creating detailed documentation or tutorials.

Flameshot | Open Source Screenshot Software

LOOKED INTO A TUTORIAL ON HOW TO USE FLAMESHOT

INKSCAPE

Inkscape Project Report: Hedgehog Character Design

Date: February 05, 2025

Completed Components:

1. Body Creation
   • Successfully created spiky exterior using polygon tool (15 corners, 0.8 spoke ratio)
   • Implemented depth using duplicate polygons with darker shading
   • Created inner body using ellipse tool and node manipulation
   • Achieved proper dimensions (Width: 266px, Height: 366px)
2. Eye Design
   • Created triangular eye spots using polygon tool
   • Implemented symmetric node manipulation
   • Added eyeballs using perfect circles
   • Included white glare spots for realism
   • Successfully duplicated and flipped for symmetry
3. Snout Implementation
   • Created using ellipse tool and path manipulation
   • Added dark gray oval nose
   • Included white glare spot on nose
4. Ear Design
   • Repurposed eye spot shape for ears
   • Added 12px stroke width
   • Implemented pink/salmon coloring
   • Successfully positioned behind body, above spikes
5. Hand Creation
   • Implemented tapered lines using custom stroke technique
   • Created hand shapes using pencil tool
   • Successfully duplicated and flipped for symmetry

Skills Demonstrated:

• Tool mastery (Polygon, Ellipse, Pencil tools)
• Path manipulation
• Node editing
• Shape duplication and modification
• Layer management
• Color theory application

TEXT TO CAD

Tried to use text to cad software but due to server issues it was not functioning.

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Last update: February 18, 2025