Enum EdgeMode

Namespace

Egami.Operations

Assembly

Egami.dll

How a convolution reads taps that fall past the image border.

public enum EdgeMode

Fields

Clamp = 0

Repeats the edge pixel. The default.

Mirror = 1

Reflects the image at its border, repeating the edge pixel: c b a | a b c | c b a.

Transparent = 3

Reads fully transparent black, so edges fade out.

Wrap = 2

Continues from the opposite edge, as if the image were tiled.

Examples

using Raster soft = photo.Derive(ops => ops.Blur(3), Ct);           // Gaussian, sigma in pixels
using Raster boxed = photo.Derive(ops => ops.BoxBlur(4), Ct);       // fast, radius in pixels
using Raster crisp = photo.Derive(ops => ops.Sharpen(0.8f, 1.5f), Ct); // unsharp mask: amount, sigma

// Any kernel: here a 3 × 3 emboss, with edges clamped and alpha left alone.
ConvolutionKernel emboss = new(3, 3, [-2, -1, 0, -1, 1, 1, 0, 1, 2]);
using Raster embossed = photo.Derive(ops => ops.Convolve(emboss, EdgeMode.Clamp, preserveAlpha: true), Ct);