Mesh

What would we do without meshes? You can load one either from a file or a handmade one:

Builders

c++ Mesh::Add(std::string path, float scale,bool smooth = true);

std::string path if relative then look in data path.
float scale scale
bool smooth polyscope shading mode (if false then visible edges)

c++ Mesh::Add(const vecs& V,const faces& F, bool smooth = true);

const vecs& V vecs = std::vector<Eigen::Vector3d>.
const faces& F faces = std::vector<std::vector<size_t>.
bool smooth polyscope shading mode (if false then visible edges)

Scalar fields

While you could display a scalar field by using the common approach of Quantities, slope offers a custom wrapper for scalar fields for a proper continuous intro/outro display.

c++ MeshScalarField::Add(const Mesh::MeshPtr& mesh, const std::string& name, const Vec& values, const std::string& colormap = 'viridis');

const Mesh::MeshPtr& mesh the mesh carrying the field.
const std::string& name the quantity name, as polyscope shows it.
const Vec& values one value per vertex (scalars also accepted).
const std::string& colormap any polyscope colormap.

void setBaseline(scalar v) the value every vertex starts from, the field's minimum by default.

scalar color_split fraction of the intro spent fading the mesh colour to colormap(baseline) before the field grows, so the surface colour does not change abruptly. 0 disables that stage.

Deck format

- mesh: bunny.obj       # the obj file, relative to the data path
  at: bunny_transform   # a persistent transform label, not a screen position
  smooth: false         # polyscope shading mode, false shows the edges
  normalize: true       # rescale the mesh to fit the scene