[Delphi] Reczne reskalowanie

[Toster]

Ok od pewnego czasu pracuje nad recznym reskalowaniem Quada tak aby pasowal mi do moich wymagan, pomyslalem ze moze sie komus przyda wiec wrzucam kodzik. Dostepne sa 3 metody skalowania: Pionowe X, poziome Y, Const aspect ratio. Kod jest czesciowo zoptymalizowany, da sie go bardziej wyzylowac (co juz zrobilem) ale kod wynikowy jest w javie a to nie takie miejsce. Anyway, dla zainteresowanych potrzeba:
1. Paintbox
2. Image do ktorego wczytamy bitmape
3. 5 suwakow
4. jeden guzik
5. kod ponizej

[code=Delphi]
unit Unit1;

interface

uses
Windows, Messages, Sys][X[XBX[w2WD7G&27FD7G&2FGPDf&Ó6Ć72Df&4(Mąą QMąą 4(Mąą QMąą 4 ScrollBar3: TScrollBar;
Image1: TImage;
PaintBNZ[B]N]BĆ&#67&Ć&#SE67&Ć&#&Fw&WE&F4( ŃŃ
ąŹĄMQ=4(edure ScrollBar4Change(Sender: TObject);
private
proYH]]XY
KLKLLM[YNB&6VGW&RG&uVB67B2\"2CFVvW\"(IEĄąąąŃ4(Aate declarations }
public
{ Public declarations }
YH]]XY
KLKLLM[YNBVćCf f&ÓDf&ÓŚĆVVFFE\"ćF4(4)Q ŃŃ
ąŹĄMQ=4)4( QuadWidth, LeftY, RightY, LeftH, RightH : integer;
begin
Z[K[HXBZ[Kf2fĆ&V7BD&6ĆVE&V7BVEvGFŁ67&ĆAŃ4(1ŃdMąą AŃ4(IĄŃd ScrollBar5.Position;
LeftH := ScrollBar2.Position;
YH][BHY[ŃK][R[^`dG&uVBVEvGFĆVgE&vE1ŃdŹ1Ń IĄŃdIĄŃ 4(!E QuadWidth, LeftY, LeftY + LeftH, RightY, RightY+RightH);
]XY
LLL
ÓYL
Y
NB[BB[C&6VGW&RDf&ÓG&uVB67B\"\"2CŃ4)4(ąŃ4( dy34: integer;
slope12, slope34: integer;
minY, maxN[YBK[YBNX[B^L#&VŚ&VvW7FvVćRć& 4(źąŃi]Mi4( dx12 := x2 - x1;
dy12 := y2 - y1;
dy13 := y3 - y1;
LHMHLBX[YHBYLL wCFV&Vv6ĆS\"ŁG\"6FbG#ąą4(4(ąŃĄ4 slope34 := (dx12 shl 8) div dy34;
end else slope34H BBZ[HHZ[LKLNBZ[HHZ[Z[KLĘNŁBŁ
\"d5Ą5d4(d5Ą5d4(4( minY+1 to maxY-1 do begin
xs := x1;
xe := x2;BY
H LH[
ILJH[Y[Bś2\02ŁRŁ6ĆS\"Ą4(4(ĄąĄŃen begin
//skos /
xs := x1 + ((Slope12*(K^LJJH
NBHHB[BBY
fCBćBfwC2FV&Vv6ś25ĄŹĄMąĄĄ4( := Min(xe, x2);
end;
if (y < y3) and (y&gtM
H[Y[BBHX^
JRŁR6ĆS3B26\"4(4(Ńźź4( min(y1,y2)+(x-x1) * (dy12/dx12);
yy2 := min(y3,y4JĘ^JH

LLNBY^LH^LH[^LH^\"'Ł#G#'ŁĄźĄee4(%AŃ.Bitmap.Canvas.Pixels[Round(rx),Round(ry)];
cl := ]NBZ[K[^[WHHBVćCVćCG'6vćRĆćD&6fA
ąąeąą4(AŃ
5QźĄą
PaintBox1.Canvas.LineTo(x2,y2);
PaintBox1.Canvas.LinUĘM
NBZ[K[[UĘKLĘNBZ[6f2ĆćUFŚVćC&6VGW&RDf&ÓdG&uVB6Ń4)4(x: integer;
dy13, dy24, dy34: integer;
slope12, slopL[YBZ[KX^N[YBK[Y#''FVvW##FVvW#Ś&VvW74(źź4(źź4(źąŃowe x1 = x3, x2 = x4 ZAWSZE !
dx12 := x2 - x1;
dy12 HLHLNBLLHLHLNBLHMHLB&Ć7ŚćR6ĆpbG\"fCfwCFV&Vv6ĆĄĄ4(ąą4(4( if dx12 <> 0 then begin
slope34 := (dy34 shl
H]LB[[HLHBBZ[HHZ[L\& quot;Ł2ŁB(4(d5Ą4(d
5Ą5d4(Y := Max(MaxY, y4);
}
for x := x2 - x1 downto 0 do begiBYLL[BZ[HHLHJ

T\"6\"V6PŁ6ĆS\"Ą4(4(MąąŃĄ4(d - (((-Slope34)*x) shr 8)
else
maxY := y3 +

L

H
NBBYX^H Z[H[Y[BŁŁŁ4(4(Ą4(2 := (140 shl 8) div (maxY-minY);
for y := maxY-minY Y[BH

^LJHB'Ł\"6\"6ŁvS7GW&R&F
Aąmąt4(AŃ
Aąm minY+y] := cl;
end;
end;
//odrysowanie liniaZCBZ[K[[HY[BZ[K6f2fUFD&6f2ĆćUF\"\"AŃ
1QźĄą4(AŃ
1Qźx1,y3);
PaintBox1.Canvas.LineTo(x1,y1);
end;

proceduHLK[J[X
NBY[B]6Ć6ćŚVćC&6VGW&RDf&ÓG&uVB67BŃ4)4(ąŃ4(ą13, slope24: integer;
minX, maxX: integer;
rx,ry: inYBK[YBLLL[YB6FVvW#Ś&VvW7FvVćRć& źź4(źąŃi]Mi
dy13 := y3 - y1;
dx13 := x3 - x1;
dx24 := x4 - BYLLH[LLH NBX[YHB6ĆS2ŁG26FbG36ĆS#BŁG#B64
(4(Ńźź4(if Slope13<0 then
minX := x1 -(((-Slope13)*y) s
CB[CBZ[HH


LLĘJH
Nb6ĆS#BfCFVŁ\"ąĄ4(ą4(`ŹĄMą4*y) shr 8);

if maxX < minX then begin
HX^BX^HZ[BZ[HBVćCŁC6FbG
3\"ŁĄĄ``4(``Ńźdo begin
rx := (x * xx2) shr 8;
ry := (y
JHBH[XYLKXK]X[V5''ÓD& amp;6f2V5ś4(4(4(źą4(AintBox
1.Canvas.Pen.Color := clYellow;
PaintBox1.Canvas.MUĘKLJNBZ[K[[UĘLJNBZ[6f2ĆćUFB2D&6f2ĆćUF22(AŃ
1QźĄą4)4(4)Q.RQuad(const x1, y1, x4, y4: integer);
var
dx, dy: inteBN[YBYYK^^N[YBFVvW#Ś& amp;VvGŁBGŁBGĄ4(Ą
4(:= 0;
for y := dy downto 0 do begin
ix := 0;
HY[BH[XYLKX&R&F6f2V5ś6\"Ć6\"ÓD&
Aąmt4(Ź
end;
iy := iy + idy;
end;
end;

end.
[/code]