<<实现photoshop魔棒(magic wand tool)效果的源代码>>
是一个老外写的,希望能有人转成VC++的工程,谢谢!
片断:
procedure exec;
var
hh,ll,ss,h1,l1,s1,aa,bb,cc:real;
c1,c2,c3,pixr,pixg,pixb,oldr,oldg,oldb,newr,newg,newb:byte;
pix:tcolorref;
jj:byte;
xr,yr:longint;
gray:real;
pp:prgbtriplerow;
begin
oldr:=getrvalue(oldcolor);
oldg:=getgvalue(oldcolor);
oldb:=getbvalue(oldcolor);
for jj:=1 to 4 do
begin
if jj=1 then
begin
xr:=xf+1;
yr:=yf;
end;
if jj=2 then
begin
xr:=xf-1;
yr:=yf;
end;
if jj=3 then
begin
xr:=xf;
yr:=yf+1;
end;
if jj=4 then
begin
xr:=xf;
yr:=yf-1;
end;
if ((xr< bitmap1.width)and(jj=1))or((xr>=0)and(jj=2))
or ((yr< bitmap1.height)and(jj=3))or((yr>=0)and(jj=4)) then
begin
pp:=bitmap1.scanline[yr];
pix:=rgb(pp[xr].rgbtred,pp[xr].rgbtgreen,pp[xr].rgbtblue);
pixr:=getrvalue(pix);
pixg:=getgvalue(pix);
pixb:=getbvalue(pix);
if (not mask[xr,yr])and(abs(pixr-oldr)<=tolerance*150)and(abs(pixg-oldg)<=tolerance*150)and(abs(pixb-oldb)<=tolerance*150)then
begin
mask[xr,yr]:=true;
nf := nf+1;
fillx[nf]:= xr;
filly[nf]:= yr;
end;
end;
end;
end;
代码::
delphi/delphi20procedures/magwand.zip
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