3d mesh

function Block:createBlock()
    --resetMatrix()
    local w,h,d=self.width,self.height,self.depth
    local v = {
      vec3(-0.5*w+self.posx, -0.5*h+self.posy-48,  0.5*d+self.posz), -- Left  bottom front
      vec3( 0.5*w+self.posx, -0.5*h+self.posy-48,  0.5*d+self.posz), -- Right bottom front
      vec3( 0.5*w+self.posx,  0.5*h+self.posy-48,  0.5*d+self.posz), -- Right top    front
      vec3(-0.5*w+self.posx,  0.5*h+self.posy-48,  0.5*d+self.posz), -- Left  top    front
      vec3(-0.5*w+self.posx, -0.5*h+self.posy-48, -0.5*d+self.posz), -- Left  bottom back
      vec3( 0.5*w+self.posx, -0.5*h+self.posy-48, -0.5*d+self.posz), -- Right bottom back
      vec3( 0.5*w+self.posx,  0.5*h+self.posy-48, -0.5*d+self.posz), -- Right top    back
      vec3(-0.5*w+self.posx,  0.5*h+self.posy-48, -0.5*d+self.posz), -- Left  top    back
    }

    local cubeverts = {
      -- Front, Right, Back, Left, Top, Bottom
      v[1], v[2], v[3], v[1], v[3], v[4],
      v[2], v[6], v[7], v[2], v[7], v[3],
      v[6], v[5], v[8], v[6], v[8], v[7],
      v[5], v[1], v[4], v[5], v[4], v[8],
      v[4], v[3], v[7], v[4], v[7], v[8],
      v[5], v[6], v[2], v[5], v[2], v[1],
    }

    local BL=vec2(self.texR[1],self.texR[2]) --bottom left
    local BR=vec2(self.texR[3],self.texR[2]) --bottom right
    local TR=vec2(self.texR[3],self.texR[4]) --top right
    local TL=vec2(self.texR[1],self.texR[4]) --top left

    local cubetexCoords = {}
    for i=1,6 do
        table.insert(cubetexCoords,BL)
        table.insert(cubetexCoords,BR)
        table.insert(cubetexCoords,TR)
        table.insert(cubetexCoords,BL)
        table.insert(cubetexCoords,TR)
        table.insert(cubetexCoords,TL)
    end

    local ms = mesh()
    ms.vertices = cubeverts
    ms.texture = self.tex
    ms.texCoords = cubetexCoords
    ms:setColors(27, 145, 33, 255)
    return ms
end