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3d-viewer, ray-tracing, do not add coincident segments 

Fixes #1946 (lp 1852970)

(cherry picked from commit 518c1df81b)
This commit is contained in:
Mario Luzeiro 2020-01-02 20:02:09 +00:00 committed by Wayne Stambaugh
parent a4aec1919c
commit 6ab9bdb346
1 changed files with 23 additions and 7 deletions
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30
3d-viewer/3d_rendering/3d_render_raytracing/shapes2D/cpolygon2d.cpp
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@ -429,8 +429,10 @@ void Convert_path_polygon_to_polygon_blocks_and_dummy_blocks(
// Contains a closed polygon used to calc if points are inside
SEGMENTS segments;
segments_and_normals.resize( path.PointCount() );
segments.resize( path.PointCount() );
segments_and_normals.reserve( path.PointCount() );
segments.reserve( path.PointCount() );
SFVEC2F prevPoint;
for( int i = 0; i < path.PointCount(); i++ )
{
@ -439,9 +441,23 @@ void Convert_path_polygon_to_polygon_blocks_and_dummy_blocks(
const SFVEC2F point ( (float)( a.x) * aBiuTo3DunitsScale,
(float)(-a.y) * aBiuTo3DunitsScale );
bbox.Union( point );
segments_and_normals[i].m_Start = point;
segments[i].m_Start = point;
// Only add points that are not coincident
if( (i == 0) ||
(fabs(prevPoint.x - point.x) > FLT_EPSILON) ||
(fabs(prevPoint.y - point.y) > FLT_EPSILON) )
{
prevPoint = point;
bbox.Union( point );
SEGMENT_WITH_NORMALS sn;
sn.m_Start = point;
segments_and_normals.push_back( sn );
POLYSEGMENT ps;
ps.m_Start = point;
segments.push_back( ps );
}
}
bbox.ScaleNextUp();
@ -517,13 +533,13 @@ void Convert_path_polygon_to_polygon_blocks_and_dummy_blocks(
segments_and_normals[i].m_Normals.m_Start = normalSeg;
else
segments_and_normals[i].m_Normals.m_Start =
glm::normalize( (((normalBeforeSeg * dotBefore ) + normalSeg) * 0.5f) );
glm::normalize( (normalBeforeSeg * dotBefore ) + normalSeg );
if( dotAfter < 0.7f )
segments_and_normals[i].m_Normals.m_End = normalSeg;
else
segments_and_normals[i].m_Normals.m_End =
glm::normalize( (((normalAfterSeg * dotAfter ) + normalSeg) * 0.5f) );
glm::normalize( (normalAfterSeg * dotAfter ) + normalSeg );
}
if( aDivFactor == 0.0f )