Explain Line Drawing Algorithm Dda

Explain Line Drawing Algorithm Dda : Introduction to computer graphics ppt output

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A continuous line drawing is produced without ever lifting the drawing instrument from the page. This means that, in addition to outlines and internal shapes, the pencil must move back and forth across the surface of the paper, with lines doubling back on each other, so that the drawing is one free-flowing, unbroken line. To avoid the temptation to erase lines, it can be helpful to complete a continuous line drawing with an ink pen, varying the line weight, as needed, to indicate perspective and areas of light and shadow. Like the drawing methods described above, this drawing method develops confidence and drawing speed, and encourages your eyes and hand and brain to work together. Continuous line drawings work best with in-depth observation of your subject, without interference from your thinking mind.

Famous artist David Hockey has produced many line drawings – often portraits. He draws in silence, with precision and care, moving a black ink pen across the paper quickly. This portrait – a snapshot into Hockney’s life – is entitled ‘Eugene and Henry’.

Gesture Drawing Exercises: When you begin investigating your subject matter in the initial phase of a high school Art programme, it can be helpful to make several first-hand gestural drawings. The best of these can be selected for your final portfolio (taking advantage of a photocopier or digital camera to reduce in size, if necessary). A small still life scene can be depicted just as easily as a large moving form.

Pop artist Andy Warhol is famous for his brightly coloured silkscreen artworks; however he was also a rampant drawer – often filling sketchbooks. He won many prizes for the drawings he produced in high school. The illustrations shown above – comprising of slightly smudged and blotchy black lines – have Warhol’s typical off-beat style. They were completed using a basic printmaking technique: pressing sheets of paper into a wet ink drawing, transferring the image to the second sheet.