whiterabbit meshbuilder

function ENT:RebuildMesh(returnVerts)

    local Normals = {
        Up = Vector(0,0,1),
        Forward = Vector(0,1,0),
        Right = Vector(1,0,0),
        Down = Vector(0,0,-1),
        Back = Vector(0,-1,0),
        Left = Vector(-1,0,0),
    }

    --[[local Colors = {
        Red = Color(255,0,0,125),
        Green = Color(0,255,0,128),
        Blue = Color(0,0,255,128),
        White = Color(255,255,255,128),
    }]]

    local Colors = {
        Red = Color(255,255,255,255),
        Green = Color(255,255,255,255),
        Blue = Color(255,255,255,255),
        White = Color(255,255,255,255),
    }

    local Verts = {}
    local function AddVert(pos,u,v,normal,color)
        Verts[#Verts+1] = { pos=pos, u=u, v=v, normal=normal, color=color or Colors.White }
    end

    local cpos = self:GetPos()
    local mins,maxs = self:GetBlockBuilderMins(),self:GetBlockBuilderMaxs()

    local RightX = maxs.x
    local LeftX = mins.x
    local FrontY = maxs.y
    local BackY = mins.y
    local TopZ = maxs.z
    local BottomZ = mins.z

    local TopFrontLeft = Vector( LeftX, FrontY, TopZ )
    local TopFrontRight = Vector( RightX, FrontY, TopZ )
    local TopBackLeft = Vector( LeftX, BackY, TopZ )
    local TopBackRight = Vector( RightX, BackY, TopZ )
    local BottomFrontLeft = Vector( LeftX, FrontY, BottomZ )
    local BottomFrontRight = Vector( RightX, FrontY, BottomZ )
    local BottomBackLeft = Vector( LeftX, BackY, BottomZ )
    local BottomBackRight = Vector( RightX, BackY, BottomZ )

    --Top
    AddVert( TopFrontLeft, 0, 0, Normals.Up, Colors.Blue )
    AddVert( TopFrontRight, 1, 0, Normals.Up, Colors.Blue )
    AddVert( TopBackLeft, 0, 1, Normals.Up, Colors.Blue )
    AddVert( TopFrontRight, 1, 0, Normals.Up, Colors.Blue )
    AddVert( TopBackRight, 1, 1, Normals.Up, Colors.Blue )
    AddVert( TopBackLeft, 0, 1, Normals.Up, Colors.Blue )

    --Bottom
    AddVert( BottomFrontLeft, 0, 1, Normals.Down )
    AddVert( BottomBackLeft, 0, 0, Normals.Down )
    AddVert( BottomFrontRight, 1, 1, Normals.Down )
    AddVert( BottomFrontRight, 1, 1, Normals.Down )
    AddVert( BottomBackLeft, 0, 0, Normals.Down )
    AddVert( BottomBackRight, 1, 0, Normals.Down )

    --Front
    AddVert( TopFrontLeft, 1, 0, Normals.Forward, Colors.Green )
    AddVert( BottomFrontLeft, 1, 1, Normals.Forward, Colors.Green )
    AddVert( TopFrontRight, 0, 0, Normals.Forward, Colors.Green )
    AddVert( BottomFrontLeft, 1, 1, Normals.Forward, Colors.Green )
    AddVert( BottomFrontRight, 0, 1, Normals.Forward, Colors.Green )
    AddVert( TopFrontRight, 0, 0, Normals.Forward, Colors.Green )

    --Back
    AddVert( TopBackLeft, 0, 0, Normals.Back )
    AddVert( TopBackRight, 1, 0, Normals.Back )
    AddVert( BottomBackLeft, 0, 1, Normals.Back )
    AddVert( BottomBackLeft, 0, 1, Normals.Back )
    AddVert( TopBackRight, 1, 0, Normals.Back )
    AddVert( BottomBackRight, 1, 1, Normals.Back )

    --Left
    AddVert( TopBackLeft, 1, 0, Normals.Left )
    AddVert( BottomBackLeft, 1, 1, Normals.Left )
    AddVert( TopFrontLeft, 0, 0, Normals.Left )
    AddVert( BottomBackLeft, 1, 1, Normals.Left )
    AddVert( BottomFrontLeft, 0, 1, Normals.Left )
    AddVert( TopFrontLeft, 0, 0, Normals.Left )

    --Right
    AddVert( TopBackRight, 0, 0, Normals.Right, Colors.Red )
    AddVert( TopFrontRight, 1, 0, Normals.Right, Colors.Red )
    AddVert( BottomBackRight, 0, 1, Normals.Right, Colors.Red )
    AddVert( BottomBackRight, 0, 1, Normals.Right, Colors.Red )
    AddVert( TopFrontRight, 1, 0, Normals.Right, Colors.Red )
    AddVert( BottomFrontRight, 1, 1, Normals.Right, Colors.Red )

    if returnVerts then
        return Verts
    end

    local mymesh = Mesh()
    mymesh:BuildFromTriangles(Verts)
    self.BlockMesh = mymesh

end