Line Drawing Algorithm Graphics

Line Drawing Algorithm Graphics : Computer graphics bresenham line drawing algorithm

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A cross contour drawing contains parallel lines that run across the surface of an object (or radiate from a central point), such as those that appear on a topographical map or a digital wireframe. The lines can run at any appropriate angle (sometimes at multiple angles) and may continue across objects and into the background. Cross contour drawings typically follow the rules of perspective, with lines drawn closer together in the distance and further apart in the foreground. In this type of drawing, the illusion of three-dimensional volume is created entirely with line.

In this ink drawing, a small grid experimenting with different line techniques has been included in the top left of the work. Some of these have been selected to apply tone to the work, carefully replicating reflection and shadow. This image was completed using a sharpened bamboo stick dipped in black ink.In this sketchbook page Samantha imitates and analyses a line drawing by Vincent van Gogh, discussing the suitability and appropriateness of each technique. Note that when learning from artists, it is rarely necessary to slavishly copy an entire work; replicating small pieces (as in this example) is often all that is needed.

Most famous for his post-impressionist paintings, Vincent van Gogh also produced over a thousand drawings. In this pen and pencil line drawing, ‘Cottages With a Woman Working in the Foreground’, we see the stylistic swirling of line in the trees and clouds that is so characteristic of his well-known paintings. Capturing the swirling of the trees and the movement of the clouds, van Gogh represents the light falling across the textured landscape with quick, confident mark-making.

Line Techniques Worksheet: The worksheet below has been provided by the Student Art Guide for classroom use only and may be issued freely to students (credited to studentartguide.com), as well as shared via the social media buttons at the bottom of this page. It may not be published online or shared or distributed in any other way, as per our terms and conditions. The full size printable worksheet is available by clicking the PDF link below. This worksheet is suitable for middle school students, or senior students who have not had prior experience with line techniques.This worksheet introduces a range of line drawing techniques and encourages students to invent their own (such as using the first letter of their name). It allows students to practise using these techniques and to apply tone to a range of simple geometric objects.