Computer-Aided Design
2D raster
Raster images, also known as bitmaps, are comprised of individual pixels of color. Each colour pixel contributes to the overall image. When viewed individually, its a colour; but when viewed as a whole, the coloured pixels make up a vivid and detailed image, which provides for rich details and pixel-by-pixel editing. They can be created in softwares such as Adobe Photoshop and GIMP.
2D vector
Unlike raster graphics, which are comprised of colored pixels arranged to display an image, vector graphics are made up of paths, each with a mathematical formula (vector) that tells the path how it is shaped and what color it is bordered with or filled by. Since mathematical formulas dictate how the image is rendered, vector images retain their appearance regardless of size. They can be scaled infinitely. Vector images can be created and edited in programs such as Illustrator, CorelDraw, and InkScape.
Rastor vs Vector
| Rastor | Vector |
|---|---|
| Comprised of pixels, arranged to form an image | Comprised of paths, dictated by mathematical formulas |
| Constrained by resolution and dimensions | Infinitely scalable |
| Capable of rich, complex color blends | Difficult to blend colors without rasterizing |
| Large file sizes (but can be compressed) | Small file sizes |
| File types include .jpg, .gif, .png, .tif, .bmp, .psd; plus .eps and .pdf when created by raster programs | File types include .ai, .cdr, .svg; plus .eps and .pdf when created by vector programs |
| Raster software includes Photoshop and GIMP | Vector software includes Illustrator, CorelDraw, and InkScape |
| Perfect for painting | Perfect for drawing |
| Capable of detailed editing | Less detailed, but offers precise paths |
Fusion 360?
Fusion 360 is a cloud-based CAD/CAM tool which allows the user to design anything. It combines organic shapes modelling, mechanical design and manufacturing in one comprehensive package. I will be using Fusion 360 for my designs.
Assignment 1: Nametag
Firstly, I sketched out the nametag body on the x-y plane.
Secondly, I used the offset tool to create the outline around the body and used the circle tool for the ring on the nametag.
Lastly, I finished the nametag off with the extrude tool.
Assignment 2: Fidget Spinner
Firstly, I sketched out the layout of how big I wanted my fidget spinner to be, including the middle area using just the circle tool and the offset tool.
Secondly, I drew out one part of the fidget spinner and used the circular copy tool to copy out the other 2 parts.
Lastly, I used the trim tool to remove the excess lines and extruded the fidget spinner design.
I've also managed to create the M8 nuts that I will be using for my fidget spinner.
Assignment 3: Chess Pawn
Firstly, I inserted the canvas of the chess pawn using insert canvas.
Secondly, I used the line tool and the spline tool to outline half of the chess pawn.
Next, I used the revolve tool to revolve the one-half outline of the pawn and set it to 360 degree so that it would become a 3D model.
Ball in a cube
This design was quite simple. All I had to do was to draw out the design of the outer cube first and then followed by the ball in the middle.
Fusion 360 view