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Don't crash on empty SHAPE_LINE_CHAINs. 

Fixes https://gitlab.com/kicad/code/kicad/issues/12407

(cherry picked from commit fc74de81fb)
This commit is contained in:
Jeff Young 2022-09-13 13:27:39 +01:00
parent 4a5fdd4214
commit 9cb6df9c38
1 changed files with 12 additions and 0 deletions
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12
libs/kimath/src/geometry/shape_line_chain.cpp
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@ -1791,6 +1791,12 @@ SHAPE_LINE_CHAIN& SHAPE_LINE_CHAIN::Simplify( bool aRemoveColinear )
const VECTOR2I SHAPE_LINE_CHAIN::NearestPoint( const VECTOR2I& aP, const VECTOR2I SHAPE_LINE_CHAIN::NearestPoint( const VECTOR2I& aP,
bool aAllowInternalShapePoints ) const bool aAllowInternalShapePoints ) const
{ {
if( PointCount() == 0 )
{
// The only right answer here is "don't crash".
return { 0, 0 };
}
int min_d = INT_MAX; int min_d = INT_MAX;
int nearest = 0; int nearest = 0;
@ -1842,6 +1848,12 @@ const VECTOR2I SHAPE_LINE_CHAIN::NearestPoint( const VECTOR2I& aP,
const VECTOR2I SHAPE_LINE_CHAIN::NearestPoint( const SEG& aSeg, int& dist ) const const VECTOR2I SHAPE_LINE_CHAIN::NearestPoint( const SEG& aSeg, int& dist ) const
{ {
if( PointCount() == 0 )
{
// The only right answer here is "don't crash".
return { 0, 0 };
}
int nearest = 0; int nearest = 0;
dist = INT_MAX; dist = INT_MAX;