Bresenham Line Drawing Algorithm Using Opengl

Bresenham Line Drawing Algorithm Using Opengl : Output conclusion computer graphics using opengl

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Contour Drawing Exercises: Using line alone eliminates the challenge of applying tone, colour and mediums; and instead focuses attention solely upon shape and proportion. After completing warm-up activities such as blind and gesture drawings, slower, more formal contour drawings can be an excellent way to begin more realistic representations of your subject matter. Used intermittently throughout projects, contour drawings can also be helpful for the student who needs to work faster.

Continuous Line Drawing Exercises: This drawing method is great for sketchbooks and drawing from life. It can be an excellent starter activity, with drawings completed on large, inexpensive paper that can be scanned / edited / cropped and used in other ways within your projects.

Blind Contour Drawing : A blind contour drawing contains lines that are drawn without ever looking at the piece of paper. This forces you to study a scene closely, observing every shape and edge with your eyes, as your hand mimics these on paper. The aim is not to produce a realistic artwork, but rather to strengthen the connection between eyes, hand and brain: a reminder that, when drawing, you must first learn to see.

The angle that these techniques are applied may remain constant within a drawing, or it may change in response to the angle and direction of the forms. For example, cross-hatching may flow around the surface of an object in a similar direction as cross contour lines. These techniques are also a great way to create the illusion of texture (see our article about observational drawings).