double_xyz rimginterface::MaximumInArea( tImgPlanar const& im, tAoi area ) {
assert( im.is_mono8() );
int iy = area.sy();
const int x = area.px();
const int y = area.py();
int max = 0;
while( iy-- ) {
int ix = area.sx();
while( ix-- ) {
int val = im[0][ y + iy ][ x + ix];
if( val > max ) {
max = val;
}
}
}
vector<int32_xy> newxy( area.sx()*area.sy() + 1 );
// tixy *xy = newxy();
uint32_t maxcount = 0;
iy = area.sy();
while( iy-- ) {
int ix = area.sx();
while( ix-- ) {
int val = im.pixel( uint32_xy( x + ix, y + iy ) );
if( val == max ) {
newxy[ maxcount ].setx( x + ix );
newxy[ maxcount ].sety( y + iy );
maxcount++;
}
}
}
if( maxcount == 0 ) {
assert( false );
}
double dx = 0.0;
double dy = 0.0;
uint32_t count = maxcount;
while( count ) {
count--;
dx += static_cast<double>(newxy[ count ].x());
dy += static_cast<double>(newxy[ count ].y());
}
dx /= static_cast<double>(maxcount);
dy /= static_cast<double>(maxcount);
return double_xyz( dx, dy, max );
}
int main()
{
int buttons,x,y;
char str[100];
int driver=VGA;
int mode=VGAHI;
initgraph(&driver,&mode,"");
cleardevice();
rectangle(0,0,639,479);
setfillstyle(SOLID_FILL,BLUE);
bar(1,1,638,478);
outtextxy(3,15,"move mouse using any button.");
outtextxy(285,15,"quit");
setwritemode(XOR_PUT);
if(init(2, 638, 8, 477)==0 ) /*调用init 函数对鼠标器初始化*/
{printf("Mouse or Mouse Driver Absent,P1ease install!");
delay(5000);
closegraph();
exit(1);
}
x=320;y=240;
cursor(x,y); /*置十字光标在屏幕中心*/
for(;;)
{
newxy(&x,&y,&buttons);
if(x>=280&& x<=330 &&y>=12&&y<=33&& buttons)
{
cleardevice();
closegraph();
exit(0);
}
}
}
