Struct SurfaceDataPatch

pub struct SurfaceDataPatch {
    pub data_id: u64,
    pub additional_vertices: Vec<u32>,
    pub triangles: Vec<[u32; 3]>,
    pub second_tex_coords: Vec<Vector2<f32>>,
}

A patch for surface data that contains secondary texture coordinates and new topology for data. It is needed for serialization: during the UV generation, generator could multiply vertices to make seams, it adds new data to existing vertices. The problem is that we do not serialize surface data - we store only a “link” to resource from which we’ll load surface data on deserialization. But freshly loaded resource is not suitable for generated lightmap - in most cases it just does not have secondary texture coordinates. So we have to patch data after loading somehow with required data, this is where SurfaceDataPatch comes into play.

Fields

data_id: u64

A surface data id. Usually it is just a hash of surface data. Can be ignored completely, if you don’t need to save patches.

additional_vertices: Vec<u32>

List of indices of vertices, that must be cloned and pushed into vertices array one by one at the end.

triangles: Vec<[u32; 3]>

New topology for surface data. Old topology must be replaced with new, because UV generator splits vertices at UV map seams.

second_tex_coords: Vec<Vector2<f32>>

List of second texture coordinates used for light maps. This list includes all the vertices added by the generation step.

Trait Implementations

impl Clone for SurfaceDataPatch

fn clone(&self) -> SurfaceDataPatch

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SurfaceDataPatch

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for SurfaceDataPatch

fn default() -> SurfaceDataPatch

Returns the “default value” for a type.