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OBJ Reader support for vertex colors after vertices or Vertex colors as separate lines. (Thanks to Bruno Dutailly)

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Added unittests for vertex colors



git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@475 fdac6126-5c0c-442c-9429-916003d36597
This commit is contained in:
Jan Möbius
2011-12-01 16:16:29 +00:00
parent 618f18fb4a
commit d361e5dbdc
5 changed files with 222 additions and 8 deletions
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27
src/OpenMesh/Core/IO/reader/OBJReader.cc
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@@ -272,11 +272,13 @@ read(std::istream& _in, BaseImporter& _bi, Options& _opt)
std::string keyWrd;
float x, y, z, u, v;
int r, g, b;
BaseImporter::VHandles vhandles;
std::vector<Vec3f> normals;
std::vector<Vec3uc> colors;
std::vector<Vec2f> texcoords;
std::vector<Vec2f> face_texcoords;
std::vector<VertexHandle> vertexHandles;
std::string matname;
@@ -355,7 +357,16 @@ read(std::istream& _in, BaseImporter& _bi, Options& _opt)
stream >> x; stream >> y; stream >> z;
if ( !stream.fail() )
_bi.add_vertex(OpenMesh::Vec3f(x,y,z));
{
vertexHandles.push_back(_bi.add_vertex(OpenMesh::Vec3f(x,y,z)));
stream >> r; stream >> g; stream >> b;
if ( !stream.fail() )
{
_opt += Options::VertexColor;
colors.push_back(OpenMesh::Vec3uc((unsigned char)r,(unsigned char)g,(unsigned char)b));
}
}
}
// texture coord
@@ -376,6 +387,16 @@ read(std::istream& _in, BaseImporter& _bi, Options& _opt)
}
}
// color per vertex
else if (keyWrd == "vc")
{
stream >> r; stream >> g; stream >> b;
if ( !stream.fail() ){
colors.push_back(OpenMesh::Vec3uc((unsigned char)r,(unsigned char)g,(unsigned char)b));
_opt += Options::VertexColor;
}
}
// normal
else if (keyWrd == "vn")
@@ -466,6 +487,8 @@ read(std::istream& _in, BaseImporter& _bi, Options& _opt)
}
// Obj counts from 1 and not zero .. array counts from zero therefore -1
vhandles.push_back(VertexHandle(value-1));
if (_opt.vertex_has_color())
_bi.set_color(vhandles.back(), colors[value-1]);
break;
case 1: // texture coord

27
src/Unittests/TestFiles/cube-minimal-vertex-colors-after-vertex-definition.obj Normal file
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@@ -0,0 +1,27 @@
g cube
v 0.0 0.0 0.0 0 0 0
v 0.0 0.0 1.0 0 0 255
v 0.0 1.0 0.0 0 255 0
v 0.0 1.0 1.0 0 255 255
v 1.0 0.0 0.0 255 0 0
v 1.0 0.0 1.0 255 0 255
v 1.0 1.0 0.0 255 255 0
v 1.0 1.0 1.0 255 255 255
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
f 1//2 7//2 5//2
f 1//2 3//2 7//2
f 1//6 4//6 3//6
f 1//6 2//6 4//6
f 3//3 8//3 7//3
f 3//3 4//3 8//3
f 5//5 7//5 8//5
f 5//5 8//5 6//5
f 1//4 5//4 6//4
f 1//4 6//4 2//4
f 2//1 6//1 8//1
f 2//1 8//1 4//1

35
src/Unittests/TestFiles/cube-minimal-vertex-colors-as-vc-lines.obj Normal file
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@@ -0,0 +1,35 @@
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
vc 0 0 0
vc 0 0 255
vc 0 255 0
vc 0 255 255
vc 255 0 0
vc 255 0 255
vc 255 255 0
vc 255 255 255
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
f 1//2 7//2 5//2
f 1//2 3//2 7//2
f 1//6 4//6 3//6
f 1//6 2//6 4//6
f 3//3 8//3 7//3
f 3//3 4//3 8//3
f 5//5 7//5 8//5
f 5//5 8//5 6//5
f 1//4 5//4 6//4
f 1//4 6//4 2//4
f 2//1 6//1 8//1
f 2//1 8//1 4//1

27
src/Unittests/TestFiles/cube-minimal.obj Normal file
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@@ -0,0 +1,27 @@
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
f 1//2 7//2 5//2
f 1//2 3//2 7//2
f 1//6 4//6 3//6
f 1//6 2//6 4//6
f 3//3 8//3 7//3
f 3//3 4//3 8//3
f 5//5 7//5 8//5
f 5//5 8//5 6//5
f 1//4 5//4 6//4
f 1//4 6//4 2//4
f 2//1 6//1 8//1
f 2//1 8//1 4//1

102
src/Unittests/unittests_loading.hh
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@@ -37,6 +37,8 @@ class OpenMeshLoader : public OpenMeshBase {
*/
TEST_F(OpenMeshLoader, LoadSimpleOFFFile) {
mesh_.clear();
bool ok = OpenMesh::IO::read_mesh(mesh_, "cube1.off");
EXPECT_TRUE(ok);
@@ -53,6 +55,8 @@ TEST_F(OpenMeshLoader, LoadSimpleOFFFile) {
*/
TEST_F(OpenMeshLoader, LoadSimplePointPLYFileWithBadEncoding) {
mesh_.clear();
bool ok = OpenMesh::IO::read_mesh(mesh_, "pointCloudBadEncoding.ply");
EXPECT_TRUE(ok) << "Unable to load pointCloudBadEncoding.ply";
@@ -68,6 +72,8 @@ TEST_F(OpenMeshLoader, LoadSimplePointPLYFileWithBadEncoding) {
*/
TEST_F(OpenMeshLoader, LoadSimplePointPLYFileWithGoodEncoding) {
mesh_.clear();
bool ok = OpenMesh::IO::read_mesh(mesh_, "pointCloudGoodEncoding.ply");
EXPECT_TRUE(ok) << "Unable to load pointCloudGoodEncoding.ply";
@@ -77,4 +83,100 @@ TEST_F(OpenMeshLoader, LoadSimplePointPLYFileWithGoodEncoding) {
EXPECT_EQ(0, mesh_.n_faces()) << "The number of loaded faces is not correct!";
}
/*
* Just load a obj file of a cube
*/
TEST_F(OpenMeshLoader, LoadSimpleOBJ) {
mesh_.clear();
bool ok = OpenMesh::IO::read_mesh(mesh_, "cube-minimal.obj");
EXPECT_TRUE(ok) << "Unable to load cube-minimal.obj";
EXPECT_EQ(8, mesh_.n_vertices()) << "The number of loaded vertices is not correct!";
EXPECT_EQ(18, mesh_.n_edges()) << "The number of loaded edges is not correct!";
EXPECT_EQ(12, mesh_.n_faces()) << "The number of loaded faces is not correct!";
}
/*
* Just load a obj file of a cube with vertex colors defined directly after the vertex definitions
*/
TEST_F(OpenMeshLoader, LoadSimpleOBJWithVertexColorsAfterVertices) {
mesh_.clear();
mesh_.request_vertex_colors();
bool ok = OpenMesh::IO::read_mesh(mesh_, "cube-minimal-vertex-colors-after-vertex-definition.obj");
EXPECT_TRUE(ok) << "Unable to load cube-minimal-vertex-colors-after-vertex-definition.obj";
EXPECT_EQ(8, mesh_.n_vertices()) << "The number of loaded vertices is not correct!";
EXPECT_EQ(18, mesh_.n_edges()) << "The number of loaded edges is not correct!";
EXPECT_EQ(12, mesh_.n_faces()) << "The number of loaded faces is not correct!";
EXPECT_EQ(0, mesh_.color(mesh_.vertex_handle(0))[0] ) << "Wrong vertex color at vertex 0 component 0";
EXPECT_EQ(0, mesh_.color(mesh_.vertex_handle(0))[1] ) << "Wrong vertex color at vertex 0 component 1";
EXPECT_EQ(0, mesh_.color(mesh_.vertex_handle(0))[2] ) << "Wrong vertex color at vertex 0 component 2";
EXPECT_EQ(0, mesh_.color(mesh_.vertex_handle(3))[0] ) << "Wrong vertex color at vertex 3 component 0";
EXPECT_EQ(255, mesh_.color(mesh_.vertex_handle(3))[1] ) << "Wrong vertex color at vertex 3 component 1";
EXPECT_EQ(255, mesh_.color(mesh_.vertex_handle(3))[2] ) << "Wrong vertex color at vertex 3 component 2";
EXPECT_EQ(255, mesh_.color(mesh_.vertex_handle(4))[0] ) << "Wrong vertex color at vertex 4 component 0";
EXPECT_EQ(0, mesh_.color(mesh_.vertex_handle(4))[1] ) << "Wrong vertex color at vertex 4 component 1";
EXPECT_EQ(0, mesh_.color(mesh_.vertex_handle(4))[2] ) << "Wrong vertex color at vertex 4 component 2";
EXPECT_EQ(255, mesh_.color(mesh_.vertex_handle(7))[0] ) << "Wrong vertex color at vertex 7 component 0";
EXPECT_EQ(255, mesh_.color(mesh_.vertex_handle(7))[1] ) << "Wrong vertex color at vertex 7 component 1";
EXPECT_EQ(255, mesh_.color(mesh_.vertex_handle(7))[2] ) << "Wrong vertex color at vertex 7 component 2";
mesh_.release_vertex_colors();
}
/*
* Just load a obj file of a cube with vertex colors defined as separate lines
*/
TEST_F(OpenMeshLoader, LoadSimpleOBJWithVertexColorsAsVCLines) {
mesh_.clear();
mesh_.request_vertex_colors();
bool ok = OpenMesh::IO::read_mesh(mesh_, "cube-minimal-vertex-colors-as-vc-lines.obj");
EXPECT_TRUE(ok) << "Unable to load cube-minimal-vertex-colors-as-vc-lines.obj";
EXPECT_EQ(8, mesh_.n_vertices()) << "The number of loaded vertices is not correct!";
EXPECT_EQ(18, mesh_.n_edges()) << "The number of loaded edges is not correct!";
EXPECT_EQ(12, mesh_.n_faces()) << "The number of loaded faces is not correct!";
EXPECT_EQ(0, mesh_.color(mesh_.vertex_handle(0))[0] ) << "Wrong vertex color at vertex 0 component 0";
EXPECT_EQ(0, mesh_.color(mesh_.vertex_handle(0))[1] ) << "Wrong vertex color at vertex 0 component 1";
EXPECT_EQ(0, mesh_.color(mesh_.vertex_handle(0))[2] ) << "Wrong vertex color at vertex 0 component 2";
EXPECT_EQ(0, mesh_.color(mesh_.vertex_handle(3))[0] ) << "Wrong vertex color at vertex 3 component 0";
EXPECT_EQ(255, mesh_.color(mesh_.vertex_handle(3))[1] ) << "Wrong vertex color at vertex 3 component 1";
EXPECT_EQ(255, mesh_.color(mesh_.vertex_handle(3))[2] ) << "Wrong vertex color at vertex 3 component 2";
EXPECT_EQ(255, mesh_.color(mesh_.vertex_handle(4))[0] ) << "Wrong vertex color at vertex 4 component 0";
EXPECT_EQ(0, mesh_.color(mesh_.vertex_handle(4))[1] ) << "Wrong vertex color at vertex 4 component 1";
EXPECT_EQ(0, mesh_.color(mesh_.vertex_handle(4))[2] ) << "Wrong vertex color at vertex 4 component 2";
EXPECT_EQ(255, mesh_.color(mesh_.vertex_handle(7))[0] ) << "Wrong vertex color at vertex 7 component 0";
EXPECT_EQ(255, mesh_.color(mesh_.vertex_handle(7))[1] ) << "Wrong vertex color at vertex 7 component 1";
EXPECT_EQ(255, mesh_.color(mesh_.vertex_handle(7))[2] ) << "Wrong vertex color at vertex 7 component 2";
mesh_.release_vertex_colors();
}
#endif // INCLUDE GUARD