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pcbnew: Fix VRML export checking 

In rare cases, the VRML triangulator may claim to work but return empty
vectors.  These cases need to be caught before we dereference the vector
elements.

Fixes: lp:1838448
* https://bugs.launchpad.net/kicad/+bug/1838448

(cherry picked from commit 161dc9ce7e)
This commit is contained in:
Seth Hillbrand 2019-07-31 20:02:11 -07:00
parent d4e9ddc14c
commit ff28501d6d
1 changed files with 4 additions and 2 deletions
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6
pcbnew/exporters/export_vrml.cpp
View File

@ -1690,7 +1690,8 @@ static void create_vrml_plane( IFSG_TRANSFORM& PcbOutput, VRML_COLOR_INDEX color
std::vector< int > idxPlane;
std::vector< int > idxSide;
if( !(*layer).Get2DTriangles( vertices, idxPlane, top_z, aTopPlane ) )
if( !( *layer ).Get2DTriangles( vertices, idxPlane, top_z, aTopPlane ) || idxPlane.empty()
|| idxSide.empty() )
{
#ifdef DEBUG
do {
@ -1776,7 +1777,8 @@ static void create_vrml_shell( IFSG_TRANSFORM& PcbOutput, VRML_COLOR_INDEX color
bottom_z = tmp;
}
if( !(*layer).Get3DTriangles( vertices, idxPlane, idxSide, top_z, bottom_z ) )
if( !( *layer ).Get3DTriangles( vertices, idxPlane, idxSide, top_z, bottom_z )
|| idxPlane.empty() || idxSide.empty() )
{
#ifdef DEBUG
do {