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` Constants -----------------------------------------
#constant TEMPORARY_MEMBLOCK_NUM 256
#constant TEMPORARY_MESH_NUM     1000
` ---------------------------------------------------

MakeObjectDisc(1, 100.0, 15) ` Object number, size, amount of tris

if file exist("texture.png")
   load image "texture.png", 1
   texture object 1, 1
endif

sync on
sync rate 60

do
   turn object right 1, 1
   sync
loop

function MakeObjectDisc(objectNum as integer, size as float, numberOfTris as dword)
   local radius as float : radius = size / 2.0
   local numberOfVerts as dword : numberOfVerts = numberOfTris * 3
   local fvf as dword : fvf = 0x152 ` XYZ, normal, diffuse, tex
   local stepValue as float : stepValue = 360.0 / numberOfTris
   local fvfSize as dword : fvfSize = 36
   local polySize as dword
   local memblockSize as dword
   local quo as float : quo = 1.0 / size
   local xCoord as float
   local yCoord as float
   local memblockPos as dword

   ` Other calculations
   polySize = fvfSize * 3
   memblockSize = numberOfVerts * fvfSize + 12

   make memblock TEMPORARY_MEMBLOCK_NUM, memblockSize
   fill memory get memblock ptr(TEMPORARY_MEMBLOCK_NUM), 0, memblockSize

   ` Set header information
   write memblock dword TEMPORARY_MEMBLOCK_NUM, 0, fvf
   write memblock dword TEMPORARY_MEMBLOCK_NUM, 4, fvfSize
   write memblock dword TEMPORARY_MEMBLOCK_NUM, 8, numberOfVerts

   ` For each polygon
   for x = 0 to numberOfTris-1

      ` Vertex 1
      xCoord = cos(x*stepValue) * radius
      yCoord = sin(x*stepValue) * radius
      memblockPos = x * (polySize) + 12

      write memblock float TEMPORARY_MEMBLOCK_NUM, memblockPos, xCoord
      write memblock float TEMPORARY_MEMBLOCK_NUM, memblockPos+4, yCoord
      write memblock float TEMPORARY_MEMBLOCK_NUM, memblockPos+28, xCoord * quo + 0.5
      write memblock float TEMPORARY_MEMBLOCK_NUM, memblockPos+32, 0.5 - yCoord * quo

      ` Vertex 2
      inc memblockPos, fvfSize
      write memblock float TEMPORARY_MEMBLOCK_NUM, memblockPos+28, 0.5
      write memblock float TEMPORARY_MEMBLOCK_NUM, memblockPos+32, 0.5

      ` Vertex 3
      xCoord = cos((x+1)*stepValue) * radius
      yCoord = sin((x+1)*stepValue) * radius
      inc memblockPos, fvfSize

      write memblock float TEMPORARY_MEMBLOCK_NUM, memblockPos, xCoord
      write memblock float TEMPORARY_MEMBLOCK_NUM, memblockPos+4, yCoord
      write memblock float TEMPORARY_MEMBLOCK_NUM, memblockPos+28, xCoord * quo + 0.5
      write memblock float TEMPORARY_MEMBLOCK_NUM, memblockPos+32, 0.5 - yCoord * quo
   next x

   ` Generate the object from the memblock
   make mesh from memblock TEMPORARY_MESH_NUM, TEMPORARY_MEMBLOCK_NUM
   make object objectNum, TEMPORARY_MESH_NUM, 0
   delete mesh TEMPORARY_MESH_NUM
   delete memblock TEMPORARY_MEMBLOCK_NUM
endfunction