Kaba class VertexBuffer ed

class VertexBuffer

    # constructors
    func mut __init__(format: string)

    # functions
    func count() -> i32
    func mut create_cube(a: vec3, b: vec3)
    func mut create_quad(dest: Rect, source: Rect)
    func mut update(vertices: @DynamicArray)
    func mut update_index(indices: @DynamicArray)