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* added texCoord3d functions to objloader

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* added unittest for texcoords3d
* added texcoord3d support to baseimporter
This commit is contained in:
Martin Schultz
2016-01-05 14:21:46 +01:00
parent 011fdc9700
commit 781063a3c6
5 changed files with 147 additions and 6 deletions
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9
src/OpenMesh/Core/IO/importer/BaseImporter.hh
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@@ -106,6 +106,9 @@ public:
// add texture coordinates per face, _vh references the first texcoord
virtual void add_face_texcoords( FaceHandle _fh, VertexHandle _vh, const std::vector<Vec2f>& _face_texcoords) = 0;
// add texture 3d coordinates per face, _vh references the first texcoord
virtual void add_face_texcoords( FaceHandle _fh, VertexHandle _vh, const std::vector<Vec3f>& _face_texcoords) = 0;
// Set the texture index for a face
virtual void set_face_texindex( FaceHandle _fh, int _texId ) = 0;
@@ -133,6 +136,12 @@ public:
// set vertex texture coordinate
virtual void set_texcoord(HalfedgeHandle _heh, const Vec2f& _texcoord) = 0;
// set 3d vertex texture coordinate
virtual void set_texcoord(VertexHandle _vh, const Vec3f& _texcoord) = 0;
// set 3d vertex texture coordinate
virtual void set_texcoord(HalfedgeHandle _heh, const Vec3f& _texcoord) = 0;
// set edge color
virtual void set_color(EdgeHandle _eh, const Vec3uc& _color) = 0;

31
src/OpenMesh/Core/IO/importer/ImporterT.hh
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@@ -90,6 +90,7 @@ public:
typedef typename Mesh::Normal Normal;
typedef typename Mesh::Color Color;
typedef typename Mesh::TexCoord2D TexCoord2D;
typedef typename Mesh::TexCoord3D TexCoord3D;
typedef std::vector<VertexHandle> VHandles;
@@ -217,6 +218,19 @@ public:
mesh_.set_texcoord2D(_heh, vector_cast<TexCoord2D>(_texcoord));
}
virtual void set_texcoord(VertexHandle _vh, const Vec3f& _texcoord)
{
if (mesh_.has_vertex_texcoords3D())
mesh_.set_texcoord3D(_vh, vector_cast<TexCoord3D>(_texcoord));
}
virtual void set_texcoord(HalfedgeHandle _heh, const Vec3f& _texcoord)
{
if (mesh_.has_halfedge_texcoords3D())
mesh_.set_texcoord3D(_heh, vector_cast<TexCoord3D>(_texcoord));
}
// edge attributes
virtual void set_color(EdgeHandle _eh, const Vec4uc& _color)
@@ -292,6 +306,23 @@ public:
}
}
virtual void add_face_texcoords( FaceHandle _fh, VertexHandle _vh, const std::vector<Vec3f>& _face_texcoords)
{
// get first halfedge handle
HalfedgeHandle cur_heh = mesh_.halfedge_handle(_fh);
HalfedgeHandle end_heh = mesh_.prev_halfedge_handle(cur_heh);
// find start heh
while( mesh_.to_vertex_handle(cur_heh) != _vh && cur_heh != end_heh )
cur_heh = mesh_.next_halfedge_handle( cur_heh);
for(unsigned int i=0; i<_face_texcoords.size(); ++i)
{
set_texcoord( cur_heh, _face_texcoords[i]);
cur_heh = mesh_.next_halfedge_handle( cur_heh);
}
}
virtual void set_face_texindex( FaceHandle _fh, int _texId ) {
if ( mesh_.has_face_texture_index() ) {
mesh_.set_texture_index(_fh , _texId);

29
src/OpenMesh/Core/IO/reader/OBJReader.cc
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@@ -290,13 +290,13 @@ read(std::istream& _in, BaseImporter& _bi, Options& _opt)
std::string line;
std::string keyWrd;
float x, y, z, u, v;
float x, y, z, u, v, w;
float r, g, b;
BaseImporter::VHandles vhandles;
std::vector<Vec3f> normals;
std::vector<Vec3f> colors;
std::vector<Vec2f> texcoords;
std::vector<Vec2f> face_texcoords;
std::vector<Vec3f> texcoords3d, face_texcoords3d;
std::vector<Vec2f> texcoords, face_texcoords;
std::vector<VertexHandle> vertexHandles;
std::string matname;
@@ -406,7 +406,6 @@ read(std::istream& _in, BaseImporter& _bi, Options& _opt)
stream >> u; stream >> v;
if ( !stream.fail() ){
if ( userOptions.vertex_has_texcoord() || userOptions.face_has_texcoord() ) {
texcoords.push_back(OpenMesh::Vec2f(u, v));
@@ -415,9 +414,20 @@ read(std::istream& _in, BaseImporter& _bi, Options& _opt)
fileOptions += Options::FaceTexCoord;
}
}else{
//try to read the w component as it is optional
stream >> w;
if ( !stream.fail() ){
if ( userOptions.vertex_has_texcoord() || userOptions.face_has_texcoord() ) {
texcoords3d.push_back(OpenMesh::Vec3f(u, v, w));
omerr() << "Only single 2D texture coordinate per vertex"
// Can be used for both!
fileOptions += Options::VertexTexCoord;
fileOptions += Options::FaceTexCoord;
}
}
}else{
omerr() << "Only single 2D or 3D texture coordinate per vertex"
<< "allowed!" << std::endl;
return false;
}
@@ -553,6 +563,8 @@ read(std::istream& _in, BaseImporter& _bi, Options& _opt)
if (!texcoords.empty() && (unsigned int) (value - 1) < texcoords.size()) {
// Obj counts from 1 and not zero .. array counts from zero therefore -1
_bi.set_texcoord(vhandles.back(), texcoords[value - 1]);
if(!texcoords3d.empty() && (unsigned int) (value -1) < texcoords3d.size())
_bi.set_texcoord(vhandles.back(), texcoords3d[value - 1]);
} else {
omerr() << "Error setting Texture coordinates" << std::endl;
}
@@ -563,6 +575,8 @@ read(std::istream& _in, BaseImporter& _bi, Options& _opt)
if (!texcoords.empty() && (unsigned int) (value - 1) < texcoords.size()) {
face_texcoords.push_back( texcoords[value-1] );
if(!texcoords3d.empty() && (unsigned int) (value -1) < texcoords3d.size())
face_texcoords3d.push_back( texcoords3d[value-1] );
} else {
omerr() << "Error setting Texture coordinates" << std::endl;
}
@@ -609,7 +623,10 @@ read(std::istream& _in, BaseImporter& _bi, Options& _opt)
fh = _bi.add_face(faceVertices);
if (!vhandles.empty() && fh.is_valid() )
{
_bi.add_face_texcoords(fh, vhandles[0], face_texcoords);
_bi.add_face_texcoords(fh, vhandles[0], face_texcoords3d);
}
if ( !matname.empty() )
{

39
src/Unittests/TestFiles/cube-minimal-texCoords3d.obj Normal file
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@@ -0,0 +1,39 @@
g cube
v 0.0 0.0 0.0
v 0.0 0.0 1.0
v 0.0 1.0 0.0
v 0.0 1.0 1.0
v 1.0 0.0 0.0
v 1.0 0.0 1.0
v 1.0 1.0 0.0
v 1.0 1.0 1.0
vn 0.0 0.0 1.0
vn 0.0 0.0 -1.0
vn 0.0 1.0 0.0
vn 0.0 -1.0 0.0
vn 1.0 0.0 0.0
vn -1.0 0.0 0.0
vt 1.0 1.0 1.0
vt 2.0 2.0 2.0
vt 3.0 3.0 3.0
vt 4.0 4.0 4.0
vt 5.0 5.0 5.0
vt 6.0 6.0 6.0
vt 7.0 7.0 7.0
vt 8.0 8.0 8.0
vt 9.0 9.0 9.0
vt 10.0 10.0 10.0
vt 11.0 11.0 11.0
vt 12.0 12.0 12.0
f 1/1/2 7/1/2 5/1/2
f 1/2/2 3/2/2 7/2/2
f 1/3/6 4/3/6 3/3/6
f 1/4/6 2/4/6 4/4/6
f 3/5/3 8/5/3 7/5/3
f 3/6/3 4/6/3 8/6/3
f 5/7/5 7/7/5 8/7/5
f 5/8/5 8/8/5 6/8/5
f 1/9/4 5/9/4 6/9/4
f 1/10/4 6/10/4 2/10/4
f 2/11/1 6/11/1 8/11/1
f 2/12/1 8/12/1 4/12/1

45
src/Unittests/unittests_read_write_OBJ.cc
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@@ -202,6 +202,51 @@ TEST_F(OpenMeshReadWriteOBJ, LoadSimpleOBJCheckTexCoords) {
mesh_.release_halfedge_texcoords2D();
}
/*
* Just load a obj file of a cube and checks the 3d halfedge texCoords
*/
TEST_F(OpenMeshReadWriteOBJ, LoadSimpleOBJCheckTexCoords3d) {
mesh_.clear();
mesh_.request_halfedge_texcoords3D();
OpenMesh::IO::Options options;
options += OpenMesh::IO::Options::FaceTexCoord;
std::string file_name = "cube-minimal-texCoords3d.obj";
bool ok = OpenMesh::IO::read_mesh(mesh_, file_name,options);
EXPECT_TRUE(ok) << file_name;
EXPECT_EQ(1, mesh_.texcoord3D(mesh_.halfedge_handle(0))[0] ) << "Wrong texCoord at halfedge 0 component 0";
EXPECT_EQ(1, mesh_.texcoord3D(mesh_.halfedge_handle(0))[1] ) << "Wrong texCoord at halfedge 0 component 1";
EXPECT_EQ(1, mesh_.texcoord3D(mesh_.halfedge_handle(0))[2] ) << "Wrong texCoord at halfedge 0 component 2";
EXPECT_EQ(3, mesh_.texcoord3D(mesh_.halfedge_handle(10))[0] ) << "Wrong texCoord at halfedge 1 component 0";
EXPECT_EQ(3, mesh_.texcoord3D(mesh_.halfedge_handle(10))[1] ) << "Wrong texCoord at halfedge 1 component 1";
EXPECT_EQ(3, mesh_.texcoord3D(mesh_.halfedge_handle(10))[2] ) << "Wrong texCoord at halfedge 1 component 2";
EXPECT_EQ(6, mesh_.texcoord3D(mesh_.halfedge_handle(19))[0] ) << "Wrong texCoord at halfedge 4 component 0";
EXPECT_EQ(6, mesh_.texcoord3D(mesh_.halfedge_handle(19))[1] ) << "Wrong texCoord at halfedge 4 component 1";
EXPECT_EQ(6, mesh_.texcoord3D(mesh_.halfedge_handle(19))[2] ) << "Wrong texCoord at halfedge 4 component 2";
EXPECT_EQ(7, mesh_.texcoord3D(mesh_.halfedge_handle(24))[0] ) << "Wrong texCoord at halfedge 7 component 0";
EXPECT_EQ(7, mesh_.texcoord3D(mesh_.halfedge_handle(24))[1] ) << "Wrong texCoord at halfedge 7 component 1";
EXPECT_EQ(7, mesh_.texcoord3D(mesh_.halfedge_handle(24))[2] ) << "Wrong texCoord at halfedge 7 component 2";
EXPECT_EQ(9, mesh_.texcoord3D(mesh_.halfedge_handle(30))[0] ) << "Wrong texCoord at halfedge 9 component 0";
EXPECT_EQ(9, mesh_.texcoord3D(mesh_.halfedge_handle(30))[1] ) << "Wrong texCoord at halfedge 9 component 1";
EXPECT_EQ(9, mesh_.texcoord3D(mesh_.halfedge_handle(30))[2] ) << "Wrong texCoord at halfedge 9 component 2";
EXPECT_EQ(12, mesh_.texcoord3D(mesh_.halfedge_handle(35))[0] ) << "Wrong texCoord at halfedge 11 component 0";
EXPECT_EQ(12, mesh_.texcoord3D(mesh_.halfedge_handle(35))[1] ) << "Wrong texCoord at halfedge 11 component 1";
EXPECT_EQ(12, mesh_.texcoord3D(mesh_.halfedge_handle(35))[2] ) << "Wrong texCoord at halfedge 11 component 2";
mesh_.request_halfedge_texcoords3D();
}
/*
* Just load a obj file of a square with a material
*/