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eText Typefaces - Amazon Web Services

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The Advantages of Edge Rendering<br />

and Edge Tuning<br />

Edge Rendering<br />

Monotype’s Edge TrueType® renderer uses adaptive distance fields (ADF) to<br />

describe the edges of an outline. These fields are controlled by inside and<br />

outside cut-off parameters. By adjusting these values, the rendered glyph<br />

can be tuned in both thickness and sharpness. The ADF renderer fills interiors<br />

with black and traces boundaries to apply gray values according to the<br />

distance from the inside and outside contour of the character.<br />

Density<br />

Max<br />

Distance Inside Cutoff<br />

0<br />

Outside Cutoff<br />

Contour Edge<br />

By adjusting the inside and outside cut-off values we can adjust the weight<br />

of the strokes or the sharpness of the edges of each character.<br />

<strong>Typefaces</strong> for Digital Reading Environments Page 7

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