Class MeshBuilder

constructor

• new MeshBuilder(spec: Record<string, number>): MeshBuilder

  A builder for the given attributes, e.g. { position: 3, normal: 3, uv: 2 }.

  Parameters

  • spec: Record<string, number>

  Returns MeshBuilder

Readonlyspec

count

• get count(): number

  Vertices emitted so far.

  Returns number

indexCount

• get indexCount(): number

  Triangle indices added so far.

  Returns number

build

• build(): MeshData

  Trims the arrays to size (16-bit indices when the vertex count allows).

  Returns MeshData

quad

• quad(
      p: readonly (readonly [number, number, number])[],
      uvs: readonly number[],
  ): this

  Adds a flat quad from four corners given counter-clockwise as seen from the front, with the normal computed from them. uvs = [u0, v0, u1, v1, …] per corner.

  Parameters

  • p: readonly (readonly [number, number, number])[]
  • uvs: readonly number[]

  Returns this

set

• set(name: string, a?: number, b?: number, c?: number, d?: number): this

  Sets the current value of an attribute (used by following vertices).

  Parameters

  • name: string
  • a: number = 0
  • b: number = 0
  • c: number = 0
  • d: number = 0

  Returns this

tri

• tri(
      p: readonly (readonly [number, number, number])[],
      uvs: readonly number[],
  ): this

  Adds a flat triangle from three corners counter-clockwise as seen from the front.

  Parameters

  • p: readonly (readonly [number, number, number])[]
  • uvs: readonly number[]

  Returns this

triangle

• triangle(a: number, b: number, c: number): this

  Adds a triangle.

  Parameters

  • a: number
  • b: number
  • c: number

  Returns this

vertex

• vertex(x: number, y: number, z: number, u?: number, v?: number): number

  Emits a vertex at (x, y, z) with uv (u, v) and the current values of the other attributes. Returns its index.

  Parameters

  • x: number
  • y: number
  • z: number
  • u: number = 0
  • v: number = 0

  Returns number