[ Goq @ 12.07.2003. 13:45 ] @
| Ljudi, da li neko ima proceduru za TextureMapping u 2D prostoru (bez 3D korekcija i sl, samo da se razvuce slika). Najbolje da je pisana na pascal-delphi jeziku. Prevrnuh pola interneta ali nisam nasao neku normalnu proceduru. Najbolje sto sam nasao je ovo: // Make sure to add Math to your uses clause. procedure TForm1.bmp_rotate(src,dst:tbitmap;angle:extended); var c1x,c1y,c2x,c2y:integer; p1x,p1y,p2x,p2y:integer; radius,n:integer; alpha:extended; c0,c1,c2,c3:tcolor; begin //calculate the angle to pi-format angle := (angle / 180) * pi; // calculate the central points c1x := src.width div 2; c1y := src.height div 2; c2x := dst.width div 2; c2y := dst.height div 2; // number of steps if c2x < c2y then n := c2y else n := c2x; dec (n,1); // starting rotation for p2x := 0 to n do begin for p2y := 0 to n do begin if p2x = 0 then alpha:= pi/2 else alpha := arctan2(p2y,p2x); radius := round(sqrt((p2x*p2x)+(p2y*p2y))); p1x := round(radius * cos(angle+alpha)); p1y := round(radius * sin(angle+alpha)); c0 := src.canvas.pixels[c1x+p1x,c1y+p1y]; c1 := src.canvas.pixels[c1x-p1x,c1y-p1y]; c2 := src.canvas.pixels[c1x+p1y,c1y-p1x]; c3 := src.canvas.pixels[c1x-p1y,c1y+p1x]; dst.canvas.pixels[c2x+p2x,c2y+p2y]:=c0; dst.canvas.pixels[c2x-p2x,c2y-p2y]:=c1; dst.canvas.pixels[c2x+p2y,c2y-p2x]:=c2; dst.canvas.pixels[c2x-p2y,c2y+p2x]:=c3; end; application.processmessages end; end; // Here is how to call it procedure TForm1.bmpRotateClick(Sender: TObject); Var RAngle : Extended; begin RAngle := StrToFloat(Edit1.Text); bmp_rotate(Image1.Picture.Bitmap,Image2.Picture.Bitmap, RAngle); end; Smesno, i uz to sporo (:.) |