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games/galaxy: simplify zoom loop

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This commit is contained in:
spew 2017-03-10 10:37:12 -06:00
parent acd1a3edda
commit 2c6c64c474
1 changed files with 10 additions and 20 deletions
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30
sys/src/games/galaxy/galaxy.c
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@ -356,33 +356,23 @@ dozoom(void)
double f, olds;
setcursor(mc, &zoomcursor);
z = mc->xy;
olds = scale;
for(;;) {
for(;;) {
readmouse(mc);
if(mc->buttons == 0)
continue;
if(mc->buttons != 2)
goto End;
readmouse(mc);
if(mc->buttons != 2)
break;
}
z = mc->xy;
olds = scale;
d = subpt(mc->xy, z);
f = tanh((double)d.y/200) + 1;
pause(0, 0);
for(;;) {
readmouse(mc);
if(mc->buttons != 2)
break;
drawglxy();
line(screen, z, (Point){z.x, mc->xy.y}, Enddisc, Enddisc, 0, display->white, ZP);
d = subpt(mc->xy, z);
f = tanh((double)d.y/200) + 1;
scale = f*olds;
}
scale = f*olds;
drawglxy();
pause(1, 0);
}
End:
setcursor(mc, cursor);
pause(1, 0);
}
void