diff options
| -rw-r--r-- | vmodeled/main.c | 32 |
1 files changed, 18 insertions, 14 deletions
diff --git a/vmodeled/main.c b/vmodeled/main.c index 4384b02..254e410 100644 --- a/vmodeled/main.c +++ b/vmodeled/main.c @@ -24,7 +24,7 @@ struct VModel RFrame worldrf; VModel *model; -int scale = 1; +double scale = 1; void resized(void); @@ -182,17 +182,23 @@ lmb(Mousectl *mc, Keyboardctl *) } void -zoomin(void) +zoom(Mousectl *mc) { - scale++; - fprint(2, "scale %d\n", scale); -} + double oldscale, z; + Point oldxy, Δxy; -void -zoomout(void) -{ - scale--; - fprint(2, "scale %d\n", scale); + oldscale = scale; + oldxy = mc->xy; + + for(;;){ + readmouse(mc); + if(mc->buttons != 2) + break; + Δxy = subpt(mc->xy, oldxy); + z = tanh((double)Δxy.y/100) + 1; + scale = z*oldscale; + redraw(); + } } void @@ -200,12 +206,10 @@ mouse(Mousectl *mc, Keyboardctl *kc) { if((mc->buttons&1) != 0) lmb(mc, kc); + if((mc->buttons&2) != 0) + zoom(mc); if((mc->buttons&4) != 0) rmb(mc, kc); - if((mc->buttons&8) != 0) - zoomin(); - if((mc->buttons&16) != 0) - zoomout(); } void |