If last two quads vertexes in my vertex array is
(x1,y1)[top left] (x2,y2)[top right] (x3,y3)[bottom right] (x4,y4)[bottom left]
(x5,y5)[top left] (x6,y6)[top right] (x7,y7)[bottom right] (x8,y8)[bottom left]
and distance between them is bigger than my allowed size (lets say I'm counting distance between [bottom right] points to know the distance between quads), then how to add for example 3 quads (12 vertexes) to my vertex array where they are needed (between these two quads)? I cant't know where user will be drawing, so I don't know exactly where additional quads will be needed.