A lower quality bitmap image stores less data on an image, also known as compression. The various file formats a bitmap image is saved in determines its quality and file size. Bitmap graphics do not anti-alias, but can still render transparency. Unlike vector graphics, bitmap graphics store images as arrays of pixels in a grid formation. MS Paint)īitmap graphics, also known as raster graphics, are both saved and modified differently. Open up a bitmap paint editor outside of Scratch (ex.Right-click on the costume logo in the pane.Draw a circle in the vector paint editor.You can visualize close up the difference in a vector and bitmap circle by doing the following steps: However, in vector they appear smooth because the edges of the circle fade out into the white background, or in this case gradually become lighter colored. For example, if one draws a black circle on a white background in Scratch 1.4, the edges will look very bumpy. Why is this? It's because in vector the edges of lines and objects gradually become more transparent, fading into the background or layer behind, which is called anti-aliasing. Vector graphics, unlike bitmaps, store the image as rules rather than an array of pixels, for more smooth images in any stage size.Įven though they're being displayed on a screen of the same resolution and pixel density, vector graphics look much smoother than bitmap. The Paint Editor utilizes both vector graphics and raster graphics (bitmap graphics).
This is one of the features that makes Scratch different from many other programming tools, because many others do not provide a built-in image creator. These images can be used in many ways, each having its own impact on its project. Many Scratchers create their own sprites,costumes, and backdrops using it. The Scratch Paint Editor is Scratch's built-in image editor.
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