{$loadlib pumbaa.dll}

const
  BITMAP_WIDTH = 800;
  BITMAP_HEIGHT = 600;
  AREA_X1 = 25;
  AREA_Y1 = 25;
  AREA_X2 = 775;
  AREA_Y2 = 575;
  PART_WIDTH = 25;
  PART_HEIGHT = 100;
  GENERATE_SIZE = 1000000; // Size of random points generated to area..
  DUPLICATES = FALSE;

{==============================================================================]
  Explanation: Sets points from TPA that are inside bmp as color.
[==============================================================================}
procedure SetPixels(bmp: Integer; TPA: TPointArray; color: Integer);
var
  a, z: Integer;
  c: TIntegerArray;
begin
  z := High(TPA);
  if (z > -1) then
  begin
    pp_Create(color, (z + 1), c);
    FastSetPixels(bmp, TPA, c);
  end;
end;

var
  bmp, h, i, t: Integer;
  TPA, p: TPointArray;
  ATPA: T2DPointArray;
  bxs: TBoxArray;
  a, b: TBox;

begin
  ClearDebug;
  b := pp_Box((AREA_X1 + 1), (AREA_Y1 + 1), (AREA_X2 - 1), (AREA_Y2 - 1));
  pp_TPAFromBox(b, GENERATE_SIZE, DUPLICATES, TPA);
  WriteLn('TPA size: ' + IntToStr(Length(TPA)));
  bmp := CreateBitmap(BITMAP_WIDTH, BITMAP_HEIGHT);
  b := pp_Box(AREA_X1, AREA_Y1, AREA_X2, AREA_Y2);
  pp_BoxPartition(b, PART_WIDTH, PART_HEIGHT, bxs);
  pp_TPAFromBoxEdge(bxs, p);
  t := GetSystemTime;
  pp_TPAGrab(TPA, bxs, ATPA);
  WriteLn('TPAGrab took ' + IntToStr(GetSystemTime - t) + ' ms.');
  h := High(ATPA);
  SetPixels(bmp, p, 255);
  for i := 0 to h do
    SetPixels(bmp, ATPA[i], Random(16777216));
  DisplayDebugImgWindow(BITMAP_WIDTH, BITMAP_HEIGHT);
  DrawBitmapDebugImg(bmp);
end.