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little bugfix in isIn function, works a little bit slower, but better

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This commit is contained in:
Paolo Cignoni cignoni 2007-02-08 08:36:27 +00:00
parent e6d8c20b08
commit 681970daa0
1 changed files with 11 additions and 6 deletions
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17
src/meshlabplugins/editpaint/editpaint.cpp
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@ -281,21 +281,26 @@ inline int isIn(QPointF p0,QPointF p1,float dx,float dy,float radius,float *dist
if (r>=0 && r<=1 && (px*px+py*py<radius*radius)) { *dist=sqrt(px*px+py*py)/radius; return 1; }
}
//TODO: there could be some problem when point is nearer p0 or p1 and viceversa
// there could be some problem when point is nearer p0 or p1 and viceversa
// so i have to check both. is only needed with smooth_borders
bool found=0;
float x1=(dx-p1.x());
float y1=(dy-p1.y());
float bla1=x1*x1+y1*y1;
if (bla1<radius*radius) { *dist=sqrt(bla1)/radius; return 1;}
if (bla1<radius*radius) { *dist=sqrt(bla1)/radius; found=1;/*return 1;*/}
if (p0==p1) return 0;
if (p0==p1) return found;
float x0=(dx-p0.x());
float y0=(dy-p0.y());
float bla0=x0*x0+y0*y0;
if (bla0<radius*radius) { *dist=sqrt(bla0)/radius; return 1;}
if (bla0<radius*radius) {
if (found==1) *dist=min((*dist),(float)sqrt(bla0)/radius);
else *dist=sqrt(bla0)/radius;
return 1;
}
return 0;
return found;
}
/** checks if a point is in a triangle (2D) */