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fix regression in debug build

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This commit is contained in:
Dennis Luxen 2014-05-12 18:09:25 +02:00
parent f7e09686e5
commit faf9c96442
1 changed files with 11 additions and 1 deletions
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12
Algorithms/DouglasPeucker.cpp
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@ -29,6 +29,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "DouglasPeucker.h"
#include "../DataStructures/SegmentInformation.h"
#include "../Util/SimpleLogger.h"
#include <boost/assert.hpp>
@ -62,12 +63,17 @@ DouglasPeucker::DouglasPeucker()
void DouglasPeucker::Run(std::vector<SegmentInformation> &input_geometry, const unsigned zoom_level)
{
input_geometry.front().necessary = true;
input_geometry.back().necessary = true;
BOOST_ASSERT_MSG(!input_geometry.empty(), "geometry invalid");
if (input_geometry.size() <= 2)
if (input_geometry.size() < 2)
{
return;
}
SimpleLogger().Write() << "input_geometry.size()=" << input_geometry.size();
{
BOOST_ASSERT_MSG(zoom_level < 19, "unsupported zoom level");
unsigned left_border = 0;
@ -75,6 +81,10 @@ void DouglasPeucker::Run(std::vector<SegmentInformation> &input_geometry, const
// Sweep over array and identify those ranges that need to be checked
do
{
if (!input_geometry[left_border].necessary)
{
SimpleLogger().Write() << "broken interval [" << left_border << "," << right_border << "]";
}
BOOST_ASSERT_MSG(input_geometry[left_border].necessary,
"left border must be necessary");
BOOST_ASSERT_MSG(input_geometry.back().necessary, "right border must be necessary");