Module mesh_deform 

Vertex access and deformation for EditableMesh: the building blocks for procedural animation, destruction, terrain tools and “squash and stretch” effects from scripts.

Every method works in the mesh’s local space (before the object’s transform), marks the mesh as changed so the GPU copy is refreshed, and keeps the normals as they are. Call EditableMesh::recalculate_normals after a deformation when lighting matters.

use kvas_engine::{mesh::MeshData, mesh_edit::EditableMesh};
use glam::Vec3;
let mut mesh = EditableMesh::from_mesh(&MeshData::primitive("cube").unwrap()).unwrap();
let (min, max) = mesh.bounds();
mesh.twist(Vec3::Y, 45.0);          // 45 degrees per metre along Y
mesh.wave(Vec3::X, Vec3::Y, 0.1, 1.0, 0.0);
mesh.recalculate_normals().unwrap();
assert!(mesh.bounds() != (min, max), "the shape changed");