Tell me about meshed gradients

Mesh gradients are a new feature in SwiftUI that allow you to create dynamic and visually appealing color effects. They are made from a grid of points, each with an associated color. SwiftUI interpolates between these colors to create a smooth color fill across the grid. You can move these points to create various color effects, and the colors blend together smoothly, with sharper transitions occurring between points that are closer together.

To create a mesh gradient, you use the new MeshGradient view in SwiftUI. You define the rows and columns of your grid using width and height parameters, and specify the x and y coordinates for each point in the grid using simd_float2 values. Each point is then assigned a color, and SwiftUI handles the interpolation to create the gradient.

Mesh gradients can be used for purely decorative purposes, to match a surface with imagery, or even to signal changes through animations. By tweaking parameters like the position of control points, grid size, and color palette, you can explore a wide range of visual possibilities.

For more details, you can refer to the session Create custom visual effects with SwiftUI at the 07:10 mark.