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CSG_build_hull: use bruteforce, when is reasonable (double facehoof)

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Garux 2018-11-15 00:16:39 +03:00
parent d83d5977b7
commit a88202f6c1
1 changed files with 39 additions and 38 deletions
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77
radiant/csg.cpp
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@ -1089,49 +1089,50 @@ public:
#include "convhull_3d.h"
void CSG_build_hull( const MergeVertices& mergeVertices, MergePlanes& mergePlanes ){
#if 0
/* bruteforce new planes */
for( MergeVertices::const_iterator i = mergeVertices.begin() + 0; i != mergeVertices.end() - 2; ++i )
for( MergeVertices::const_iterator j = i + 1; j != mergeVertices.end() - 1; ++j )
for( MergeVertices::const_iterator k = j + 1; k != mergeVertices.end() - 0; ++k ){
const Plane3 plane = plane3_for_points( *i, *j, *k );
if( plane3_valid( plane ) ){
const brushsplit_t split = mergeVertices.classify_plane( plane );
if( ( split.counts[ePlaneFront] == 0 ) != ( split.counts[ePlaneBack] == 0 ) ){
if( split.counts[ePlaneFront] != 0 )
mergePlanes.insert( MergePlane( plane3_flipped( plane ), *i, *j, *k ) );
else
mergePlanes.insert( MergePlane( plane, *i, *k, *j ) );
if( mergeVertices.size() < 130 ){ // use reliable path, when possible, as convhull_3d.h is not too much.
/* bruteforce new planes */
for( MergeVertices::const_iterator i = mergeVertices.begin() + 0; i != mergeVertices.end() - 2; ++i )
for( MergeVertices::const_iterator j = i + 1; j != mergeVertices.end() - 1; ++j )
for( MergeVertices::const_iterator k = j + 1; k != mergeVertices.end() - 0; ++k ){
const Plane3 plane = plane3_for_points( *i, *j, *k );
if( plane3_valid( plane ) ){
const brushsplit_t split = mergeVertices.classify_plane( plane );
if( ( split.counts[ePlaneFront] == 0 ) != ( split.counts[ePlaneBack] == 0 ) ){
if( split.counts[ePlaneFront] != 0 )
mergePlanes.insert( MergePlane( plane3_flipped( plane ), *i, *j, *k ) );
else
mergePlanes.insert( MergePlane( plane, *i, *k, *j ) );
}
}
}
}
else{
const int nVertices = mergeVertices.size();
ch_vertex* vertices = ( ch_vertex* )malloc( mergeVertices.size() * sizeof( ch_vertex ) );
for( std::size_t i = 0; i < mergeVertices.size(); ++i ){
vertices[i].x = static_cast<CH_FLOAT>( mergeVertices[i].x() );
vertices[i].y = static_cast<CH_FLOAT>( mergeVertices[i].y() );
vertices[i].z = static_cast<CH_FLOAT>( mergeVertices[i].z() );
}
int* faceIndices = NULL;
int nFaces;
convhull_3d_build( vertices, nVertices, &faceIndices, &nFaces );
/* Where 'faceIndices' is a flat 2D matrix [nFaces x 3] */
for( int i = 0; i < nFaces; ++i ){
Vector3 p[3];
for( int j = 0; j < 3; ++j ){
// p[j] = Vector3( vertices[faceIndices[i * 3 + j]].x, vertices[faceIndices[i * 3 + j]].y, vertices[faceIndices[i * 3 + j]].z );
p[j] = mergeVertices[faceIndices[i * 3 + j]];
}
const Plane3 plane = plane3_for_points( p[0], p[1], p[2] );
if( plane3_valid( plane ) ){
mergePlanes.insert( MergePlane( plane, p[0], p[2], p[1] ) );
}
#else
const int nVertices = mergeVertices.size();
ch_vertex* vertices = ( ch_vertex* )malloc( mergeVertices.size() * sizeof( ch_vertex ) );
for( std::size_t i = 0; i < mergeVertices.size(); ++i ){
vertices[i].x = static_cast<double>( mergeVertices[i].x() );
vertices[i].y = static_cast<double>( mergeVertices[i].y() );
vertices[i].z = static_cast<double>( mergeVertices[i].z() );
}
int* faceIndices = NULL;
int nFaces;
convhull_3d_build( vertices, nVertices, &faceIndices, &nFaces );
/* Where 'faceIndices' is a flat 2D matrix [nFaces x 3] */
for( int i = 0; i < nFaces; ++i ){
Vector3 p[3];
for( int j = 0; j < 3; ++j ){
// p[j] = Vector3( vertices[faceIndices[i * 3 + j]].x, vertices[faceIndices[i * 3 + j]].y, vertices[faceIndices[i * 3 + j]].z );
p[j] = mergeVertices[faceIndices[i * 3 + j]];
}
const Plane3 plane = plane3_for_points( p[0], p[1], p[2] );
if( plane3_valid( plane ) ){
mergePlanes.insert( MergePlane( plane, p[0], p[2], p[1] ) );
}
}
free( vertices );
free( faceIndices );
#endif
free( vertices );
free( faceIndices );
}
}
void CSG_WrapMerge( const ClipperPoints& clipperPoints ){