code: function transformVertex(vertex, scale, translate) {
    vertex[0] = vertex[0] * scale[0] + translate[0];
    vertex[1] = vertex[1] * scale[1] + translate[1];
  }
docs: Apply a linear transform to a vertex.  The provided vertex is modified in
  place.
  
  @param {import("../coordinate.js").Coordinate} vertex Vertex.
  @param {Array<number>} scale Scale for each dimension.
  @param {Array<number>} translate Translation for each dimension.