以前一直以为找图比较难,后来看了AutoHotkey的源码,原来也就是笨方法。
以下是精确的找图。因为已经很快,没再做优化处理。注意我这里去掉了透明处理,需要的自己加上吧。
//
精确判断,在大图里的(x,y)位置上是不是小图?
function BmpCmp(bmpBig,bmp:TBitmap;x,y:integer):boolean;
var
i,j:integer;
row1, row2:pRGBTripArray;
p1,p2:TRGBTriple;
begin
result: = true;
for j: = 0 to bmp.Height - 1 do
begin
row1: = bmpBig.ScanLine[y + j];
row2: = bmp.ScanLine[j];
for i: = 0 to bmp.Width - 1 do
begin
p1: = row1[x + i];
p2: = row2[i];
if (p1.rgbtBlue <> p2.rgbtBlue) or (p1.rgbtGreen <> p2.rgbtGreen)
or (p1.rgbtRed <> p2.rgbtRed) then
begin
result: = false;
exit;
end ;
end ;
end ;
end ;
function BmpCmp(bmpBig,bmp:TBitmap;x,y:integer):boolean;
var
i,j:integer;
row1, row2:pRGBTripArray;
p1,p2:TRGBTriple;
begin
result: = true;
for j: = 0 to bmp.Height - 1 do
begin
row1: = bmpBig.ScanLine[y + j];
row2: = bmp.ScanLine[j];
for i: = 0 to bmp.Width - 1 do
begin
p1: = row1[x + i];
p2: = row2[i];
if (p1.rgbtBlue <> p2.rgbtBlue) or (p1.rgbtGreen <> p2.rgbtGreen)
or (p1.rgbtRed <> p2.rgbtRed) then
begin
result: = false;
exit;
end ;
end ;
end ;
end ;
以下是精确找图, 调用精确判断
//
精确找图,在大图里的(x1,y1)和(x2,y2)中找出小图来?
// 当返回true时,以下变量存放找到的位置
// bmpFindX:integer;
// bmpFindY:integer;
function BmpFind(bmpBig, bmp: TBitmap; x1, y1, x2, y2: integer): Boolean;
var
i, j, x, y: integer;
row, row1, row2: pRGBTripArray;
p0, p, p1, p2: TRGBTriple;
begin
if x1 + y1 + x2 + y2 = 0 then
begin
x1 : = 0 ;
y1 : = 0 ;
x2 : = bmpBig.Width - 1 ;
y2 : = bmpBig.Height - 1 ;
end ;
row : = bmp.ScanLine[ 0 ];
p0 : = row[ 0 ];
for y : = y1 to y2 - 1 do
begin
row : = bmpBig.ScanLine[y];
for x : = x1 to x2 - 1 do
begin
p : = row[x];
if (bmp.Width <= x2 - x) and (bmp.Height <= y2 - y)
and (p.rgbtBlue = p0.rgbtBlue) and (p.rgbtGreen = p0.rgbtGreen)
and (p.rgbtRed = p0.rgbtRed) then
begin
if BmpCmp(bmpBig, bmp, x, y) then
begin
result : = true;
bmpFindX : = x;
bmpFindY : = y;
exit;
end ;
end ; // end if
end ; // end for x
end ; // end for y
result : = false;
end ;
// 当返回true时,以下变量存放找到的位置
// bmpFindX:integer;
// bmpFindY:integer;
function BmpFind(bmpBig, bmp: TBitmap; x1, y1, x2, y2: integer): Boolean;
var
i, j, x, y: integer;
row, row1, row2: pRGBTripArray;
p0, p, p1, p2: TRGBTriple;
begin
if x1 + y1 + x2 + y2 = 0 then
begin
x1 : = 0 ;
y1 : = 0 ;
x2 : = bmpBig.Width - 1 ;
y2 : = bmpBig.Height - 1 ;
end ;
row : = bmp.ScanLine[ 0 ];
p0 : = row[ 0 ];
for y : = y1 to y2 - 1 do
begin
row : = bmpBig.ScanLine[y];
for x : = x1 to x2 - 1 do
begin
p : = row[x];
if (bmp.Width <= x2 - x) and (bmp.Height <= y2 - y)
and (p.rgbtBlue = p0.rgbtBlue) and (p.rgbtGreen = p0.rgbtGreen)
and (p.rgbtRed = p0.rgbtRed) then
begin
if BmpCmp(bmpBig, bmp, x, y) then
begin
result : = true;
bmpFindX : = x;
bmpFindY : = y;
exit;
end ;
end ; // end if
end ; // end for x
end ; // end for y
result : = false;
end ;
转载于:https://www.cnblogs.com/rogee/archive/2010/09/15/1827238.html