hexasphere

Library for subdividing shapes, such as an icosahedron. This provides abstractions for almost anything to be possible, however there are many predetermined shapes.

In the case of the icosphere:

Geometry:

This starts off with an icoashedron, and then proceeds to subdivide it. The subdivided points form the dual to a goldberg polyhedron. In essence, each point on this sphere is either a hexagon or a pentagon.

Interpolation:

Points are interpolated using the geometric slerp function to preserve their accuracy.

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Features

• Base shapes
  • Icosahedron
  • Tetrahedron
  • Triangle
  • Square
  • Cube
• Interpolation functions
  • Spherical interpolation
  • Linear interpolation
  • Normalized linear interpolation
• Basic optimizations for p == 0.5 in interpolation.
• An adjacency (neighbour) map which can be generated from the indices that this library creates.

A few more optimizations are coming, along with more options for generation:

• Remove nested triangle layers by placing them into their own Vec.
• Allow interpolation functions to have access to state. (This would permit certain things such as sampling noise as part of the generation).

no_std support

no_std support can be enabled by compiling with --no-default-features to disable std support and --features libm for math functions that are only defined in std. For example:

[dependencies]
hexasphere = { version = "15", default-features = false, features = ["libm"] }

To support both std and no_std builds in project, you can use the following in your Cargo.toml:

[features]
default = ["std"]

std = ["hexasphere/std"]
libm = ["hexasphere/libm"]

[dependencies]
hexasphere = { version = "15", default-features = false }

License

Hexasphere is distributed under the terms of either the MIT license, or the Apache License (Version 2.0) at the user's choice.

See the files named LICENSE-MIT and LICENSE-APACHE2 relative to the root directory of this project for more details.