WebGL handles geometry in a standard way, independent of the complexity and number of points that surfaces can have. There are two data types that are fundamental to represent the geometry of any 3D object: vertices and indices.
Rendering in WebGL
Vertices
Vertices are the points that define the corners of 3D objects. Each vertex is represented by three floating-point numbers that correspond to the x, y, and z coordinates of the vertex. Unlike its cousin, OpenGL, WebGL does not provide API methods to pass independent vertices to the rendering pipeline; therefore, all of our vertices need to be written in a JavaScript array, which can then be used to construct a WebGL vertex buffer.
