2. Computer-Aided Design

In this week we have to understand 2 D and 3D design concepts. 2D design means planar designs which is broadly divided into raster and vector.

Raster: Raster or bitmap images, often associated with images produced through scanning or photographing objects, are formed by pixels – tiny dots storing unique color and tonal information that amalgamate to create the complete picture. Common raster file formats encompass JPEG, PNG, and GIF images. Nevertheless, due to their fixed pixel count, resizing raster images for larger or smaller spaces can lead to distortion or blurriness. For Raster I explored GIMP(GNU Image Manipulation Program) and BIMP Learn more about GIMP

Vector Images:Instead of trying to keep track of the millions of tiny pixels in a raster image, vector images keep track of points and the equations for the lines that connect them. Generally speaking, vector images are made up of paths or line art that can infinitely scalable because they work based on algorithms rather than pixels. One of the greatest things about vector images is that you can re-size them infinitely larger or smaller, and they will still print out just as clearly, with no increase (or decrease) in file size. If you remember back to your high school geometry, the equation for a circle of center (h,k) and radius r is (x - h)2 + (y - k)2 = r2. If you want to make the circle bigger, you just increase the value of r - instead of having to keep track of tons more pixels, the computer just has to keep track of a different number. That takes almost no file space at all

GIMP(GNU Image Manipulation Program) : GIMP works on the layers. If we make changes in layers then it does not affect the changes in other layer. Following are explorations in the GIMP:Changes are done on layer 2 as shown which keeps the layer 1 unchanged

Scaling: Scaling is done on pixels as well as on the percentage: before scaling size was 122KB and after scaling size reduced to 21KB.Sacle parameters of pixel is also shown.