3. Computer Aided design¶

see if this change something

This week was about introduction with CAD (computer aided design) softwares and trying them out . CAD is the use of computers to create 2D and 3D designs. Common types of CAD include two-dimensional layout design and three-dimensional modeling

2D modeling¶

It has many applications, but it is commonly used to design vector-based layouts. 2D CAD also includes drawings, such as sketches and mockups, which are common at the beginning of the design process

2D Raster¶

In computer graphics, a raster graphics or bitmap image is a dot matrix data structure that represents a generally rectangular grid of pixels (points of color), viewable via a monitor, paper, or other display medium. Raster images are stored in image files with varying formats(BMP,GIF,JPEG,EXIF,PNG,TIFF..). First , I started with Gimp

GIMP

Is a free and open-source raster graphics editor used for image retouching and editing, free-form drawing, converting between different image formats, and more specialized tasks * open gimp

Go to File>New as shown below

Change file properties (fill with transparency). Add guides(50% horizental ,50% vertical).Create a center circle

Add a rectangle smaller then the circle ,it corners are sticking out of the circle edges .Fill twith FG colar (black) Rotate the square (45°) to make it looks underlapping and overlapping with the circle Use the eraser tool to erase the square segments wich are overlapping with the circle and add your text

Here you can find the Gimp file

2D vector¶

it’s formed of images that are defined in terms of 2D points, which are connected by lines and curves to form polygons and other shapes. Each of these points has a definite position on the x- and y-axis of the work plane and determines the direction of the path; further, each path may have various properties including values for stroke color, shape, curve, thickness, and fill.

Inkcsape

Is a free and open-source vector graphics editor. This software can be used to create or edit vector graphics such as illustrations, diagrams, line arts, charts, logos, business cards, book covers, icons, CD/DVD covers, and complex paintings. * click create rectangles * click create stars * change number of corners * change rounding

create ellipse
click align
path –linked offset

Create another star and repeat same steps as before to create another gear

Check the original file

3D modeling¶

3D modeling is the process of developing a mathematical representation of any surface of an object (either inanimate or living) in three dimensions via specialized software. The product is called a 3D model. Someone who works with 3D models may be referred to as a 3D artist. It can be displayed as a two-dimensional image through a process called 3D rendering or used in a computer simulation of physical phenomena

Free cad * click file >new and choose part

* click on cylinder

click data to change the cylinder dimensions

* add a rectangle

Autodesk fusion 360

It’s the first 3D CAD, CAM, and CAE tool of its kind, connecting your entire product development process into one cloud-based platform. To download it click here i started the design by creating a simple model