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0032867: Data Exchange - Implement Draco compression for writing glTF

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Draco compression added in RWGltf_CafWriter class.
This commit is contained in:
ichesnok 2022-03-29 17:02:02 +03:00 committed by smoskvin
parent 4f53e7b37c
commit 3a2ca49b6d
14 changed files with 770 additions and 68 deletions
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94
adm/cmake/draco.cmake
View File

@ -1,4 +1,96 @@
# Draco - a library for a lossy vertex data compression, used as extension to glTF format.
# https://github.com/google/draco
THIRDPARTY_PRODUCT("DRACO" "draco/compression/decode.h" "CSF_Draco" "")
OCCT_INCLUDE_CMAKE_FILE ("adm/cmake/occt_macros")
if (NOT DEFINED INSTALL_DRACO)
set (INSTALL_DRACO OFF CACHE BOOL "${INSTALL_DRACO_DESCR}")
endif()
if (NOT DEFINED 3RDPARTY_DRACO_DIR)
set (3RDPARTY_DRACO_DIR "" CACHE PATH "The directory containing Draco")
endif()
if (NOT DEFINED 3RDPARTY_DRACO_INCLUDE_DIR)
set (3RDPARTY_DRACO_INCLUDE_DIR "" CACHE PATH "The directory containing headers of the Draco")
endif()
if (NOT DEFINED 3RDPARTY_DRACO_LIBRARY OR NOT 3RDPARTY_DRACO_LIBRARY_DIR OR NOT EXISTS "${3RDPARTY_DRACO_LIBRARY_DIR}")
set (3RDPARTY_DRACO_LIBRARY "" CACHE FILEPATH "Draco library" FORCE)
endif()
if (NOT DEFINED 3RDPARTY_DRACO_LIBRARY_DIR)
set (3RDPARTY_DRACO_LIBRARY_DIR "" CACHE PATH "The directory containing Draco library")
endif()
if (3RDPARTY_DIR AND EXISTS "${3RDPARTY_DIR}")
if (NOT 3RDPARTY_DRACO_DIR OR NOT EXISTS "${3RDPARTY_DRACO_DIR}")
FIND_PRODUCT_DIR("${3RDPARTY_DIR}" draco DRACO_DIR_NAME)
if (DRACO_DIR_NAME)
set (3RDPARTY_DRACO_DIR "${3RDPARTY_DIR}/${DRACO_DIR_NAME}" CACHE PATH "The directory containing Draco" FORCE)
endif()
endif()
endif()
if (3RDPARTY_DRACO_DIR AND EXISTS "${3RDPARTY_DRACO_DIR}")
set (DRACO_INCLUDE_PATH "${3RDPARTY_DRACO_DIR}/include")
set (DRACO_LIBRARY_PATH "${3RDPARTY_DRACO_DIR}/lib")
endif()
if (NOT 3RDPARTY_DRACO_INCLUDE_DIR)
if (DRACO_INCLUDE_PATH AND EXISTS "${DRACO_INCLUDE_PATH}")
set (3RDPARTY_DRACO_INCLUDE_DIR "${DRACO_INCLUDE_PATH}" CACHE FILEPATH "The directory containing headers of DRACO" FORCE)
endif()
endif()
if (NOT 3RDPARTY_DRACO_LIBRARY_DIR)
if (DRACO_LIBRARY_PATH AND EXISTS "${DRACO_LIBRARY_PATH}")
set (3RDPARTY_DRACO_LIBRARY_DIR "${DRACO_LIBRARY_PATH}" CACHE FILEPATH "The directory containing DRACO library" FORCE)
endif()
endif()
if (3RDPARTY_DRACO_INCLUDE_DIR AND EXISTS "${3RDPARTY_DRACO_INCLUDE_DIR}")
list (APPEND 3RDPARTY_INCLUDE_DIRS "${3RDPARTY_DRACO_INCLUDE_DIR}")
else()
list (APPEND 3RDPARTY_NOT_INCLUDED 3RDPARTY_DRACO_INCLUDE_DIR)
endif()
if (3RDPARTY_DRACO_DIR AND EXISTS "${3RDPARTY_DRACO_DIR}")
if (NOT 3RDPARTY_DRACO_LIBRARY OR NOT EXISTS "${3RDPARTY_DRACO_LIBRARY}")
set (CMAKE_FIND_LIBRARY_SUFFIXES .lib .so .dylib .a)
set (3RDPARTY_DRACO_LIBRARY "3RDPARTY_DRACO_LIBRARY-NOTFOUND" CACHE FILEPATH "The path to Draco library" FORCE)
find_library (3RDPARTY_DRACO_LIBRARY NAMES ${CSF_Draco}
PATHS "${3RDPARTY_DRACO_LIBRARY_DIR}"
PATH_SUFFIXES lib
CMAKE_FIND_ROOT_PATH_BOTH
NO_DEFAULT_PATH)
if (3RDPARTY_DRACO_LIBRARY AND EXISTS "${3RDPARTY_DRACO_LIBRARY}")
get_filename_component (3RDPARTY_DRACO_LIBRARY_DIR "${3RDPARTY_DRACO_LIBRARY}" PATH)
set (3RDPARTY_DRACO_LIBRARY_DIR "${3RDPARTY_DRACO_LIBRARY_DIR}" CACHE FILEPATH "The directory containing Draco library" FORCE)
endif()
endif()
endif()
if (3RDPARTY_DRACO_LIBRARY_DIR AND EXISTS "${3RDPARTY_DRACO_LIBRARY_DIR}")
list (APPEND 3RDPARTY_LIBRARY_DIRS "${3RDPARTY_DRACO_LIBRARY_DIR}")
else()
list (APPEND 3RDPARTY_NO_LIBS 3RDPARTY_DRACO_LIBRARY_DIR)
endif()
if (INSTALL_DRACO)
get_filename_component(3RDPARTY_DRACO_LIBRARY_REALPATH ${3RDPARTY_DRACO_LIBRARY} REALPATH)
if (SINGLE_GENERATOR)
install (FILES ${3RDPARTY_DRACO_LIBRARY_REALPATH} DESTINATION "${INSTALL_DIR_LIB}")
else()
install (FILES ${3RDPARTY_DRACO_LIBRARY_REALPATH}
CONFIGURATIONS Release
DESTINATION "${INSTALL_DIR_LIB}")
install (FILES ${3RDPARTY_DRACO_LIBRARY_REALPATH}
CONFIGURATIONS RelWithDebInfo
DESTINATION "${INSTALL_DIR_LIB}i")
install (FILES ${3RDPARTY_DRACO_LIBRARY_REALPATH}
CONFIGURATIONS Debug
DESTINATION "${INSTALL_DIR_LIB}d")
endif()
endif()

1
src/RWGltf/FILES
View File

@ -4,6 +4,7 @@ RWGltf_CafWriter.cxx
RWGltf_CafWriter.hxx
RWGltf_ConfigurationNode.cxx
RWGltf_ConfigurationNode.hxx
RWGltf_DracoParameters.hxx
RWGltf_GltfAccessor.hxx
RWGltf_GltfAccessorCompType.hxx
RWGltf_GltfAccessorLayout.hxx

371
src/RWGltf/RWGltf_CafWriter.cxx
View File

@ -22,7 +22,7 @@
#include <OSD_FileSystem.hxx>
#include <OSD_File.hxx>
#include <OSD_Path.hxx>
#include <Poly_Triangulation.hxx>
#include <OSD_Timer.hxx>
#include <RWGltf_GltfAccessorLayout.hxx>
#include <RWGltf_GltfArrayType.hxx>
#include <RWGltf_GltfMaterialMap.hxx>
@ -44,6 +44,10 @@
#include <RWGltf_GltfOStreamWriter.hxx>
#endif
#ifdef HAVE_DRACO
#include <draco/compression/encode.h>
#endif
IMPLEMENT_STANDARD_RTTIEXT(RWGltf_CafWriter, Standard_Transient)
namespace
@ -84,6 +88,84 @@ namespace
{
theStream.write ((const char* )theTri.GetData(), sizeof(theTri));
}
#ifdef HAVE_DRACO
//! Write nodes to Draco mesh
static void writeNodesToDracoMesh (draco::Mesh& theMesh,
const std::vector<Graphic3d_Vec3>& theNodes)
{
if (theNodes.empty())
{
return;
}
draco::PointAttribute anAttr;
anAttr.Init (draco::GeometryAttribute::POSITION, 3, draco::DT_FLOAT32, false, sizeof(float) * 3);
const int anId = theMesh.AddAttribute (anAttr, true, uint32_t(theNodes.size()));
draco::PointAttribute* aPtr = theMesh.attribute (anId);
draco::PointIndex anIndex(0);
for (size_t aNodeInd = 0; aNodeInd < theNodes.size(); ++aNodeInd, ++anIndex)
{
aPtr->SetAttributeValue (aPtr->mapped_index(anIndex), theNodes[aNodeInd].GetData());
}
}
//! Write normals to Draco mesh
static void writeNormalsToDracoMesh (draco::Mesh& theMesh,
const std::vector<Graphic3d_Vec3>& theNormals)
{
if (theNormals.empty())
{
return;
}
draco::PointAttribute anAttr;
anAttr.Init (draco::GeometryAttribute::NORMAL, 3, draco::DT_FLOAT32, false, sizeof(float) * 3);
const int anId = theMesh.AddAttribute (anAttr, true, uint32_t(theNormals.size()));
draco::PointAttribute* aPtr = theMesh.attribute (anId);
draco::PointIndex anIndex(0);
for (size_t aNormInd = 0; aNormInd < theNormals.size(); ++aNormInd, ++anIndex)
{
aPtr->SetAttributeValue (aPtr->mapped_index(anIndex), theNormals[aNormInd].GetData());
}
}
//! Write texture UV coordinates to Draco mesh
static void writeTexCoordsToDracoMesh (draco::Mesh& theMesh,
const std::vector<Graphic3d_Vec2>& theTexCoord)
{
if (theTexCoord.empty())
{
return;
}
draco::PointAttribute anAttr;
anAttr.Init (draco::GeometryAttribute::TEX_COORD, 2, draco::DT_FLOAT32, false, sizeof(float) * 2);
const int anId = theMesh.AddAttribute (anAttr, true, uint32_t(theTexCoord.size()));
draco::PointAttribute* aPtr = theMesh.attribute (anId);
draco::PointIndex anIndex(0);
for (size_t aTexInd = 0; aTexInd < theTexCoord.size(); ++aTexInd, ++anIndex)
{
aPtr->SetAttributeValue (aPtr->mapped_index(anIndex), theTexCoord[aTexInd].GetData());
}
}
//! Write indices to Draco mesh
static void writeIndicesToDracoMesh (draco::Mesh& theMesh,
const std::vector<Poly_Triangle>& theIndices)
{
draco::Mesh::Face aFace;
int anIndex = 0;
for (size_t anInd = 0; anInd < theIndices.size(); ++anInd, ++anIndex)
{
const Poly_Triangle& anElem = theIndices[anInd];
aFace[0] = anElem.Value(1);
aFace[1] = anElem.Value(2);
aFace[2] = anElem.Value(3);
theMesh.SetFace (draco::FaceIndex (anIndex), aFace);
}
}
#endif
}
//================================================================
@ -150,7 +232,8 @@ Standard_Boolean RWGltf_CafWriter::toSkipFaceMesh (const RWMesh_FaceIterator& th
void RWGltf_CafWriter::saveNodes (RWGltf_GltfFace& theGltfFace,
std::ostream& theBinFile,
const RWMesh_FaceIterator& theFaceIter,
Standard_Integer& theAccessorNb) const
Standard_Integer& theAccessorNb,
const std::shared_ptr<RWGltf_CafWriter::Mesh>& theMesh) const
{
if (theGltfFace.NodePos.Id == RWGltf_GltfAccessor::INVALID_ID)
{
@ -160,10 +243,13 @@ void RWGltf_CafWriter::saveNodes (RWGltf_GltfFace& theGltfFace,
theGltfFace.NodePos.ComponentType = RWGltf_GltfAccessorCompType_Float32;
}
else
{
if (theMesh.get() == nullptr)
{
const int64_t aPos = theGltfFace.NodePos.ByteOffset + myBuffViewPos.ByteOffset + theGltfFace.NodePos.Count * sizeof(Graphic3d_Vec3);
Standard_ASSERT_RAISE(aPos == (int64_t)theBinFile.tellp(), "wrong offset");
}
}
theGltfFace.NodePos.Count += theFaceIter.NbNodes();
const Standard_Integer aNodeUpper = theFaceIter.NodeUpper();
@ -172,9 +258,16 @@ void RWGltf_CafWriter::saveNodes (RWGltf_GltfFace& theGltfFace,
gp_XYZ aNode = theFaceIter.NodeTransformed (aNodeIter).XYZ();
myCSTrsf.TransformPosition (aNode);
theGltfFace.NodePos.BndBox.Add (Graphic3d_Vec3d(aNode.X(), aNode.Y(), aNode.Z()));
if (theMesh.get() != nullptr)
{
theMesh->NodesVec.push_back(Graphic3d_Vec3(float(aNode.X()), float(aNode.Y()), float(aNode.Z())));
}
else
{
writeVec3(theBinFile, aNode);
}
}
}
// =======================================================================
// function : saveNormals
@ -183,7 +276,8 @@ void RWGltf_CafWriter::saveNodes (RWGltf_GltfFace& theGltfFace,
void RWGltf_CafWriter::saveNormals (RWGltf_GltfFace& theGltfFace,
std::ostream& theBinFile,
RWMesh_FaceIterator& theFaceIter,
Standard_Integer& theAccessorNb) const
Standard_Integer& theAccessorNb,
const std::shared_ptr<RWGltf_CafWriter::Mesh>& theMesh) const
{
if (!theFaceIter.HasNormals())
{
@ -198,10 +292,13 @@ void RWGltf_CafWriter::saveNormals (RWGltf_GltfFace& theGltfFace,
theGltfFace.NodeNorm.ComponentType = RWGltf_GltfAccessorCompType_Float32;
}
else
{
if (theMesh.get() == nullptr)
{
const int64_t aPos = theGltfFace.NodeNorm.ByteOffset + myBuffViewNorm.ByteOffset + theGltfFace.NodeNorm.Count * sizeof(Graphic3d_Vec3);
Standard_ASSERT_RAISE(aPos == (int64_t)theBinFile.tellp(), "wrong offset");
}
}
theGltfFace.NodeNorm.Count += theFaceIter.NbNodes();
const Standard_Integer aNodeUpper = theFaceIter.NodeUpper();
@ -210,9 +307,16 @@ void RWGltf_CafWriter::saveNormals (RWGltf_GltfFace& theGltfFace,
const gp_Dir aNormal = theFaceIter.NormalTransformed (aNodeIter);
Graphic3d_Vec3 aVecNormal ((float )aNormal.X(), (float )aNormal.Y(), (float )aNormal.Z());
myCSTrsf.TransformNormal (aVecNormal);
if (theMesh.get() != nullptr)
{
theMesh->NormalsVec.push_back(aVecNormal);
}
else
{
writeVec3(theBinFile, aVecNormal);
}
}
}
// =======================================================================
// function : saveTextCoords
@ -221,7 +325,8 @@ void RWGltf_CafWriter::saveNormals (RWGltf_GltfFace& theGltfFace,
void RWGltf_CafWriter::saveTextCoords (RWGltf_GltfFace& theGltfFace,
std::ostream& theBinFile,
const RWMesh_FaceIterator& theFaceIter,
Standard_Integer& theAccessorNb) const
Standard_Integer& theAccessorNb,
const std::shared_ptr<RWGltf_CafWriter::Mesh>& theMesh) const
{
if (!theFaceIter.HasTexCoords())
{
@ -252,10 +357,13 @@ void RWGltf_CafWriter::saveTextCoords (RWGltf_GltfFace& theGltfFace,
theGltfFace.NodeUV.ComponentType = RWGltf_GltfAccessorCompType_Float32;
}
else
{
if (theMesh.get() == nullptr)
{
const int64_t aPos = theGltfFace.NodeUV.ByteOffset + myBuffViewTextCoord.ByteOffset + theGltfFace.NodeUV.Count * sizeof(Graphic3d_Vec2);
Standard_ASSERT_RAISE(aPos == (int64_t)theBinFile.tellp(), "wrong offset");
}
}
theGltfFace.NodeUV.Count += theFaceIter.NbNodes();
const Standard_Integer aNodeUpper = theFaceIter.NodeUpper();
@ -263,9 +371,16 @@ void RWGltf_CafWriter::saveTextCoords (RWGltf_GltfFace& theGltfFace,
{
gp_Pnt2d aTexCoord = theFaceIter.NodeTexCoord (aNodeIter);
aTexCoord.SetY (1.0 - aTexCoord.Y());
if (theMesh.get() != nullptr)
{
theMesh->TexCoordsVec.push_back(Graphic3d_Vec2((float)aTexCoord.X(), (float)aTexCoord.Y()));
}
else
{
writeVec2(theBinFile, aTexCoord.XY());
}
}
}
// =======================================================================
// function : saveIndices
@ -274,7 +389,8 @@ void RWGltf_CafWriter::saveTextCoords (RWGltf_GltfFace& theGltfFace,
void RWGltf_CafWriter::saveIndices (RWGltf_GltfFace& theGltfFace,
std::ostream& theBinFile,
const RWMesh_FaceIterator& theFaceIter,
Standard_Integer& theAccessorNb)
Standard_Integer& theAccessorNb,
const std::shared_ptr<RWGltf_CafWriter::Mesh>& theMesh)
{
if (theGltfFace.Indices.Id == RWGltf_GltfAccessor::INVALID_ID)
{
@ -286,6 +402,8 @@ void RWGltf_CafWriter::saveIndices (RWGltf_GltfFace& theGltfFace,
: RWGltf_GltfAccessorCompType_UInt16;
}
else
{
if (theMesh.get() == nullptr)
{
const int64_t aRefPos = (int64_t )theBinFile.tellp();
const int64_t aPos = theGltfFace.Indices.ByteOffset
@ -293,6 +411,7 @@ void RWGltf_CafWriter::saveIndices (RWGltf_GltfFace& theGltfFace,
+ theGltfFace.Indices.Count * (theGltfFace.Indices.ComponentType == RWGltf_GltfAccessorCompType_UInt32 ? sizeof(uint32_t) : sizeof(uint16_t));
Standard_ASSERT_RAISE (aPos == aRefPos, "wrong offset");
}
}
const Standard_Integer aNodeFirst = theGltfFace.NbIndexedNodes - theFaceIter.ElemLower();
theGltfFace.NbIndexedNodes += theFaceIter.NbNodes();
@ -306,6 +425,12 @@ void RWGltf_CafWriter::saveIndices (RWGltf_GltfFace& theGltfFace,
aTri(1) += aNodeFirst;
aTri(2) += aNodeFirst;
aTri(3) += aNodeFirst;
if (theMesh.get() != nullptr)
{
theMesh->IndicesVec.push_back(aTri);
}
else
{
if (theGltfFace.Indices.ComponentType == RWGltf_GltfAccessorCompType_UInt16)
{
writeTriangle16(theBinFile, NCollection_Vec3<uint16_t>((uint16_t)aTri(1), (uint16_t)aTri(2), (uint16_t)aTri(3)));
@ -316,6 +441,7 @@ void RWGltf_CafWriter::saveIndices (RWGltf_GltfFace& theGltfFace,
}
}
}
}
// =======================================================================
// function : Perform
@ -373,6 +499,14 @@ bool RWGltf_CafWriter::writeBinData (const Handle(TDocStd_Document)& theDocument
const TColStd_MapOfAsciiString* theLabelFilter,
const Message_ProgressRange& theProgress)
{
#ifndef HAVE_DRACO
if (myDracoParameters.DracoCompression)
{
Message::SendFail ("Error: cannot use Draco compression, Draco library missing.");
return false;
}
#endif
myBuffViewPos.Id = RWGltf_GltfAccessor::INVALID_ID;
myBuffViewPos.ByteOffset = 0;
myBuffViewPos.ByteLength = 0;
@ -396,6 +530,8 @@ bool RWGltf_CafWriter::writeBinData (const Handle(TDocStd_Document)& theDocument
myBuffViewInd.ByteLength = 0;
myBuffViewInd.Target = RWGltf_GltfBufferViewTarget_ELEMENT_ARRAY_BUFFER;
myBuffViewsDraco.clear();
myBinDataMap.Clear();
myBinDataLen64 = 0;
@ -508,6 +644,7 @@ bool RWGltf_CafWriter::writeBinData (const Handle(TDocStd_Document)& theDocument
}
}
std::vector<std::shared_ptr<RWGltf_CafWriter::Mesh>> aMeshes;
Standard_Integer aNbAccessors = 0;
NCollection_Map<Handle(RWGltf_GltfFaceList)> aWrittenFaces;
NCollection_DataMap<TopoDS_Shape, Handle(RWGltf_GltfFace), TopTools_ShapeMapHasher> aWrittenPrimData;
@ -526,6 +663,7 @@ bool RWGltf_CafWriter::writeBinData (const Handle(TDocStd_Document)& theDocument
aBuffView->ByteOffset = aBinFile->tellp();
aWrittenFaces.Clear (false);
aWrittenPrimData.Clear (false);
size_t aMeshIndex = 0;
for (ShapeToGltfFaceMap::Iterator aBinDataIter (myBinDataMap); aBinDataIter.More() && aPSentryBin.More(); aBinDataIter.Next())
{
const Handle(RWGltf_GltfFaceList)& aGltfFaceList = aBinDataIter.Value();
@ -534,6 +672,23 @@ bool RWGltf_CafWriter::writeBinData (const Handle(TDocStd_Document)& theDocument
continue;
}
std::shared_ptr<RWGltf_CafWriter::Mesh> aMeshPtr;
++aMeshIndex;
#ifdef HAVE_DRACO
if (myDracoParameters.DracoCompression)
{
if (aMeshIndex <= aMeshes.size())
{
aMeshPtr = aMeshes.at(aMeshIndex - 1);
}
else
{
aMeshes.push_back(std::make_shared<RWGltf_CafWriter::Mesh>(RWGltf_CafWriter::Mesh()));
aMeshPtr = aMeshes.back();
}
}
#endif
for (RWGltf_GltfFaceList::Iterator aGltfFaceIter (*aGltfFaceList); aGltfFaceIter.More() && aPSentryBin.More(); aGltfFaceIter.Next())
{
const Handle(RWGltf_GltfFace)& aGltfFace = aGltfFaceIter.Value();
@ -579,22 +734,22 @@ bool RWGltf_CafWriter::writeBinData (const Handle(TDocStd_Document)& theDocument
case RWGltf_GltfArrayType_Position:
{
aGltfFace->NbIndexedNodes = 0; // reset to zero before RWGltf_GltfArrayType_Indices step
saveNodes (*aGltfFace, *aBinFile, aFaceIter, aNbAccessors);
saveNodes (*aGltfFace, *aBinFile, aFaceIter, aNbAccessors, aMeshPtr);
break;
}
case RWGltf_GltfArrayType_Normal:
{
saveNormals (*aGltfFace, *aBinFile, aFaceIter, aNbAccessors);
saveNormals (*aGltfFace, *aBinFile, aFaceIter, aNbAccessors, aMeshPtr);
break;
}
case RWGltf_GltfArrayType_TCoord0:
{
saveTextCoords (*aGltfFace, *aBinFile, aFaceIter, aNbAccessors);
saveTextCoords (*aGltfFace, *aBinFile, aFaceIter, aNbAccessors, aMeshPtr);
break;
}
case RWGltf_GltfArrayType_Indices:
{
saveIndices (*aGltfFace, *aBinFile, aFaceIter, aNbAccessors);
saveIndices (*aGltfFace, *aBinFile, aFaceIter, aNbAccessors, aMeshPtr);
break;
}
default:
@ -611,6 +766,8 @@ bool RWGltf_CafWriter::writeBinData (const Handle(TDocStd_Document)& theDocument
}
// add alignment by 4 bytes (might happen on RWGltf_GltfAccessorCompType_UInt16 indices)
if (!myDracoParameters.DracoCompression)
{
int64_t aContentLen64 = (int64_t)aBinFile->tellp();
while (aContentLen64 % 4 != 0)
{
@ -619,8 +776,12 @@ bool RWGltf_CafWriter::writeBinData (const Handle(TDocStd_Document)& theDocument
}
}
}
}
if (!myDracoParameters.DracoCompression)
{
aBuffView->ByteLength = (int64_t)aBinFile->tellp() - aBuffView->ByteOffset;
}
if (!aPSentryBin.More())
{
return false;
@ -629,6 +790,72 @@ bool RWGltf_CafWriter::writeBinData (const Handle(TDocStd_Document)& theDocument
aPSentryBin.Next();
}
if (myDracoParameters.DracoCompression)
{
#ifdef HAVE_DRACO
OSD_Timer aDracoTimer;
aDracoTimer.Start();
int aBuffId = 0;
draco::Encoder aDracoEncoder;
aDracoEncoder.SetAttributeQuantization (draco::GeometryAttribute::POSITION, myDracoParameters.QuantizePositionBits);
aDracoEncoder.SetAttributeQuantization (draco::GeometryAttribute::NORMAL, myDracoParameters.QuantizeNormalBits);
aDracoEncoder.SetAttributeQuantization (draco::GeometryAttribute::TEX_COORD, myDracoParameters.QuantizeTexcoordBits);
aDracoEncoder.SetAttributeQuantization (draco::GeometryAttribute::COLOR, myDracoParameters.QuantizeColorBits);
aDracoEncoder.SetAttributeQuantization (draco::GeometryAttribute::GENERIC, myDracoParameters.QuantizeGenericBits);
aDracoEncoder.SetSpeedOptions (myDracoParameters.CompressionLevel, myDracoParameters.CompressionLevel);
for (size_t aMeshInd = 0; aMeshInd != aMeshes.size(); ++aMeshInd)
{
const std::shared_ptr<RWGltf_CafWriter::Mesh>& aCurrentMesh = aMeshes[aMeshInd];
if (aCurrentMesh->NodesVec.empty())
{
continue;
}
draco::Mesh aDracoMesh;
writeNodesToDracoMesh (aDracoMesh, aCurrentMesh->NodesVec);
if (!aCurrentMesh->NormalsVec.empty())
{
writeNormalsToDracoMesh (aDracoMesh, aCurrentMesh->NormalsVec);
}
if (!aCurrentMesh->TexCoordsVec.empty())
{
writeTexCoordsToDracoMesh (aDracoMesh, aCurrentMesh->TexCoordsVec);
}
writeIndicesToDracoMesh (aDracoMesh, aCurrentMesh->IndicesVec);
draco::EncoderBuffer anEncoderBuff;
draco::Status aStatus = aDracoEncoder.EncodeMeshToBuffer (aDracoMesh, &anEncoderBuff);
if (!aStatus.ok())
{
Message::SendFail (TCollection_AsciiString("Error: mesh cannot be encoded in draco buffer."));
return false;
}
RWGltf_GltfBufferView aBuffViewDraco;
aBuffViewDraco.Id = aBuffId++;
aBuffViewDraco.ByteOffset = aBinFile->tellp();
aBinFile->write (anEncoderBuff.data(), std::streamsize(anEncoderBuff.size()));
if (!aBinFile->good())
{
Message::SendFail (TCollection_AsciiString("File '") + myBinFileNameFull + "' cannot be written");
return false;
}
int64_t aLength = (int64_t)aBinFile->tellp();
while (aLength % 4 != 0)
{
aBinFile->write(" ", 1);
++aLength;
}
aBuffViewDraco.ByteLength = aLength - aBuffViewDraco.ByteOffset;
myBuffViewsDraco.push_back (aBuffViewDraco);
}
aDracoTimer.Stop();
Message::SendInfo (TCollection_AsciiString("Draco compression time: ") + aDracoTimer.ElapsedTime() + " s");
#endif
}
if (myIsBinary
&& myToEmbedTexturesInGlb)
{
@ -1020,10 +1247,13 @@ void RWGltf_CafWriter::writePositions (const RWGltf_GltfFace& theGltfFace)
}
myWriter->StartObject();
if (!myDracoParameters.DracoCompression)
{
myWriter->Key ("bufferView");
myWriter->Int (myBuffViewPos.Id);
myWriter->Key ("byteOffset");
myWriter->Int64 (theGltfFace.NodePos.ByteOffset);
}
myWriter->Key ("componentType");
myWriter->Int (theGltfFace.NodePos.ComponentType);
myWriter->Key ("count");
@ -1068,10 +1298,13 @@ void RWGltf_CafWriter::writeNormals (const RWGltf_GltfFace& theGltfFace)
}
myWriter->StartObject();
if (!myDracoParameters.DracoCompression)
{
myWriter->Key ("bufferView");
myWriter->Int (myBuffViewNorm.Id);
myWriter->Key ("byteOffset");
myWriter->Int64 (theGltfFace.NodeNorm.ByteOffset);
}
myWriter->Key ("componentType");
myWriter->Int (theGltfFace.NodeNorm.ComponentType);
myWriter->Key ("count");
@ -1116,10 +1349,13 @@ void RWGltf_CafWriter::writeTextCoords (const RWGltf_GltfFace& theGltfFace)
}
myWriter->StartObject();
if (!myDracoParameters.DracoCompression)
{
myWriter->Key ("bufferView");
myWriter->Int (myBuffViewTextCoord.Id);
myWriter->Key ("byteOffset");
myWriter->Int64 (theGltfFace.NodeUV.ByteOffset);
}
myWriter->Key ("componentType");
myWriter->Int (theGltfFace.NodeUV.ComponentType);
myWriter->Key ("count");
@ -1164,10 +1400,13 @@ void RWGltf_CafWriter::writeIndices (const RWGltf_GltfFace& theGltfFace)
}
myWriter->StartObject();
if (!myDracoParameters.DracoCompression)
{
myWriter->Key("bufferView");
myWriter->Int(myBuffViewInd.Id);
myWriter->Key("byteOffset");
myWriter->Int64(theGltfFace.Indices.ByteOffset);
}
myWriter->Key ("componentType");
myWriter->Int (theGltfFace.Indices.ComponentType);
myWriter->Key ("count");
@ -1309,6 +1548,24 @@ void RWGltf_CafWriter::writeBufferViews (const Standard_Integer theBinDataBuffer
myWriter->Int (myBuffViewInd.Target);
myWriter->EndObject();
}
if (myDracoParameters.DracoCompression)
{
for (size_t aBufInd = 0; aBufInd != myBuffViewsDraco.size(); ++aBufInd)
{
if (myBuffViewsDraco[aBufInd].Id != RWGltf_GltfAccessor::INVALID_ID)
{
aBuffViewId++;
myWriter->StartObject();
myWriter->Key("buffer");
myWriter->Int(theBinDataBufferId);
myWriter->Key("byteLength");
myWriter->Int64(myBuffViewsDraco[aBufInd].ByteLength);
myWriter->Key("byteOffset");
myWriter->Int64(myBuffViewsDraco[aBufInd].ByteOffset);
myWriter->EndObject();
}
}
}
myMaterialMap->FlushGlbBufferViews (myWriter.get(), theBinDataBufferId, aBuffViewId);
@ -1352,7 +1609,28 @@ void RWGltf_CafWriter::writeBuffers()
// =======================================================================
void RWGltf_CafWriter::writeExtensions()
{
#ifdef HAVE_RAPIDJSON
Standard_ProgramError_Raise_if (myWriter.get() == NULL, "Internal error: RWGltf_CafWriter::writeExtensions()");
if (myDracoParameters.DracoCompression)
{
myWriter->Key(RWGltf_GltfRootElementName(RWGltf_GltfRootElement_ExtensionsUsed));
myWriter->StartArray();
{
myWriter->Key("KHR_draco_mesh_compression");
}
myWriter->EndArray();
myWriter->Key(RWGltf_GltfRootElementName(RWGltf_GltfRootElement_ExtensionsRequired));
myWriter->StartArray();
{
myWriter->Key("KHR_draco_mesh_compression");
}
myWriter->EndArray();
}
#endif
}
// =======================================================================
@ -1425,6 +1703,7 @@ void RWGltf_CafWriter::writeMaterials (const RWGltf_GltfSceneNodeMap& theSceneNo
// =======================================================================
void RWGltf_CafWriter::writePrimArray (const RWGltf_GltfFace& theGltfFace,
const TCollection_AsciiString& theName,
const int theDracoBufInd,
bool& theToStartPrims)
{
#ifdef HAVE_RAPIDJSON
@ -1471,12 +1750,48 @@ void RWGltf_CafWriter::writePrimArray (const RWGltf_GltfFace& theGltfFace,
}
myWriter->Key ("mode");
myWriter->Int (RWGltf_GltfPrimitiveMode_Triangles);
if (myDracoParameters.DracoCompression)
{
myWriter->Key("extensions");
myWriter->StartObject();
{
myWriter->Key("KHR_draco_mesh_compression");
myWriter->StartObject();
myWriter->Key("bufferView");
myWriter->Int(myBuffViewsDraco[theDracoBufInd].Id);
myWriter->Key("attributes");
myWriter->StartObject();
{
int anAttrInd = 0;
if (theGltfFace.NodePos.Id != RWGltf_GltfAccessor::INVALID_ID)
{
myWriter->Key("POSITION");
myWriter->Int(anAttrInd++);
}
if (theGltfFace.NodeNorm.Id != RWGltf_GltfAccessor::INVALID_ID)
{
myWriter->Key("NORMAL");
myWriter->Int(anAttrInd++);
}
if (theGltfFace.NodeUV.Id != RWGltf_GltfAccessor::INVALID_ID)
{
myWriter->Key("TEXCOORD_0");
myWriter->Int(anAttrInd++);
}
}
myWriter->EndObject();
myWriter->EndObject();
}
myWriter->EndObject();
}
}
myWriter->EndObject();
#else
(void )theGltfFace;
(void )theName;
(void )theToStartPrims;
(void )theDracoBufInd;
#endif
}
@ -1492,6 +1807,8 @@ void RWGltf_CafWriter::writeMeshes (const RWGltf_GltfSceneNodeMap& theSceneNodeM
myWriter->Key (RWGltf_GltfRootElementName (RWGltf_GltfRootElement_Meshes));
myWriter->StartArray();
int aDracoBufInd = 0;
NCollection_IndexedDataMap<int, int> aDracoBufIndMap;
NCollection_Map<Handle(RWGltf_GltfFaceList)> aWrittenFaces;
for (RWGltf_GltfSceneNodeMap::Iterator aSceneNodeIter (theSceneNodeMap); aSceneNodeIter.More(); aSceneNodeIter.Next())
{
@ -1522,7 +1839,23 @@ void RWGltf_CafWriter::writeMeshes (const RWGltf_GltfSceneNodeMap& theSceneNodeM
for (RWGltf_GltfFaceList::Iterator aFaceGroupIter (*aGltfFaceList); aFaceGroupIter.More(); aFaceGroupIter.Next())
{
const Handle(RWGltf_GltfFace)& aGltfFace = aFaceGroupIter.Value();
writePrimArray (*aGltfFace, aNodeName, toStartPrims);
const int aPrevSize = aDracoBufIndMap.Size();
const int aTempDracoBufInd = aDracoBufInd;
if (myDracoParameters.DracoCompression
&& !aDracoBufIndMap.FindFromKey (aGltfFace->NodePos.Id, aDracoBufInd))
{
aDracoBufIndMap.Add (aGltfFace->NodePos.Id, aDracoBufInd);
}
writePrimArray (*aGltfFace, aNodeName, aDracoBufInd, toStartPrims);
if (aTempDracoBufInd != aDracoBufInd)
{
aDracoBufInd = aTempDracoBufInd;
}
if (!myDracoParameters.DracoCompression || aDracoBufIndMap.Size() > aPrevSize)
{
++aDracoBufInd;
}
}
}
else
@ -1542,7 +1875,23 @@ void RWGltf_CafWriter::writeMeshes (const RWGltf_GltfSceneNodeMap& theSceneNodeM
}
const Handle(RWGltf_GltfFace)& aGltfFace = aGltfFaceList->First();
writePrimArray (*aGltfFace, aNodeName, toStartPrims);
const int aPrevSize = aDracoBufIndMap.Size();
const int aTempDracoBufInd = aDracoBufInd;
if (myDracoParameters.DracoCompression
&& !aDracoBufIndMap.FindFromKey(aGltfFace->NodePos.Id, aDracoBufInd))
{
aDracoBufIndMap.Add(aGltfFace->NodePos.Id, aDracoBufInd);
}
writePrimArray (*aGltfFace, aNodeName, aDracoBufInd, toStartPrims);
if (aTempDracoBufInd != aDracoBufInd)
{
aDracoBufInd = aTempDracoBufInd;
}
if (!myDracoParameters.DracoCompression || aDracoBufIndMap.Size() > aPrevSize)
{
++aDracoBufInd;
}
}
}

37
src/RWGltf/RWGltf_CafWriter.hxx
View File

@ -18,12 +18,14 @@
#include <TColStd_MapOfAsciiString.hxx>
#include <TDF_LabelSequence.hxx>
#include <TopTools_ShapeMapHasher.hxx>
#include <RWGltf_DracoParameters.hxx>
#include <RWGltf_GltfBufferView.hxx>
#include <RWGltf_GltfFace.hxx>
#include <RWGltf_WriterTrsfFormat.hxx>
#include <RWMesh_CoordinateSystemConverter.hxx>
#include <RWMesh_NameFormat.hxx>
#include <XCAFPrs_Style.hxx>
#include <Poly_Triangle.hxx>
#include <memory>
@ -40,6 +42,15 @@ class RWGltf_CafWriter : public Standard_Transient
DEFINE_STANDARD_RTTIEXT(RWGltf_CafWriter, Standard_Transient)
public:
//! Mesh
struct Mesh
{
std::vector<Graphic3d_Vec3> NodesVec; //!< vector for mesh nodes
std::vector<Graphic3d_Vec3> NormalsVec; //!< vector for mesh normals
std::vector<Graphic3d_Vec2> TexCoordsVec; //!< vector for mesh texture UV coordinates
std::vector<Poly_Triangle> IndicesVec; //!< vector for mesh indices
};
//! Main constructor.
//! @param theFile [in] path to output glTF file
//! @param theIsBinary [in] flag to write into binary glTF format (.glb)
@ -114,6 +125,12 @@ public:
//! May reduce binary data size thanks to smaller triangle indexes.
void SetSplitIndices16 (bool theToSplit) { myToSplitIndices16 = theToSplit; }
//! Return Draco parameters
const RWGltf_DracoParameters& CompressionParameters() const { return myDracoParameters; }
//! Set Draco parameters
void SetCompressionParameters(const RWGltf_DracoParameters& theDracoParameters) { myDracoParameters = theDracoParameters; }
//! Write glTF file and associated binary file.
//! Triangulation data should be precomputed within shapes!
//! @param theDocument [in] input document
@ -186,40 +203,48 @@ protected:
//! @param theBinFile [out] output file to write into
//! @param theFaceIter [in] current face to write
//! @param theAccessorNb [in] [out] last accessor index
//! @param theMesh [in] [out] mesh
Standard_EXPORT virtual void saveNodes (RWGltf_GltfFace& theGltfFace,
std::ostream& theBinFile,
const RWMesh_FaceIterator& theFaceIter,
Standard_Integer& theAccessorNb) const;
Standard_Integer& theAccessorNb,
const std::shared_ptr<RWGltf_CafWriter::Mesh>& theMesh) const;
//! Write mesh normals into binary file.
//! @param theGltfFace [out] glTF face definition
//! @param theBinFile [out] output file to write into
//! @param theFaceIter [in] current face to write
//! @param theAccessorNb [in] [out] last accessor index
//! @param theMesh [in] [out] mesh
Standard_EXPORT virtual void saveNormals (RWGltf_GltfFace& theGltfFace,
std::ostream& theBinFile,
RWMesh_FaceIterator& theFaceIter,
Standard_Integer& theAccessorNb) const;
Standard_Integer& theAccessorNb,
const std::shared_ptr<RWGltf_CafWriter::Mesh>& theMesh) const;
//! Write mesh texture UV coordinates into binary file.
//! @param theGltfFace [out] glTF face definition
//! @param theBinFile [out] output file to write into
//! @param theFaceIter [in] current face to write
//! @param theAccessorNb [in] [out] last accessor index
//! @param theMesh [in] [out] mesh
Standard_EXPORT virtual void saveTextCoords (RWGltf_GltfFace& theGltfFace,
std::ostream& theBinFile,
const RWMesh_FaceIterator& theFaceIter,
Standard_Integer& theAccessorNb) const;
Standard_Integer& theAccessorNb,
const std::shared_ptr<RWGltf_CafWriter::Mesh>& theMesh) const;
//! Write mesh indexes into binary file.
//! @param theGltfFace [out] glTF face definition
//! @param theBinFile [out] output file to write into
//! @param theFaceIter [in] current face to write
//! @param theAccessorNb [in] [out] last accessor index
//! @param theMesh [in] [out] mesh
Standard_EXPORT virtual void saveIndices (RWGltf_GltfFace& theGltfFace,
std::ostream& theBinFile,
const RWMesh_FaceIterator& theFaceIter,
Standard_Integer& theAccessorNb);
Standard_Integer& theAccessorNb,
const std::shared_ptr<RWGltf_CafWriter::Mesh>& theMesh);
protected:
@ -280,9 +305,11 @@ protected:
//! Write a primitive array to RWGltf_GltfRootElement_Meshes section.
//! @param[in] theGltfFace face to write
//! @param[in] theName primitive array name
//! @param[in] theDracoBufInd draco buffer index
//! @param[in,out] theToStartPrims flag indicating that primitive array has been started
Standard_EXPORT virtual void writePrimArray (const RWGltf_GltfFace& theGltfFace,
const TCollection_AsciiString& theName,
const int theDracoBufInd,
bool& theToStartPrims);
//! Write RWGltf_GltfRootElement_Nodes section.
@ -369,6 +396,8 @@ protected:
ShapeToGltfFaceMap myBinDataMap; //!< map for TopoDS_Face to glTF face (merging duplicates)
int64_t myBinDataLen64; //!< length of binary file
std::vector<RWGltf_GltfBufferView> myBuffViewsDraco; //!< vector of buffers view with compression data
RWGltf_DracoParameters myDracoParameters; //!< Draco parameters
};
#endif // _RWGltf_CafWriter_HeaderFiler

41
src/RWGltf/RWGltf_DracoParameters.hxx Normal file
View File

@ -0,0 +1,41 @@
// Copyright (c) 2022 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and/or modify it under
// the terms of the GNU Lesser General Public License version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.
#ifndef _RWGltf_DracoParameters_HeaderFile
#define _RWGltf_DracoParameters_HeaderFile
//! Draco compression parameters
struct RWGltf_DracoParameters
{
RWGltf_DracoParameters()
: DracoCompression (false),
CompressionLevel (7),
QuantizePositionBits (14),
QuantizeNormalBits (10),
QuantizeTexcoordBits (12),
QuantizeColorBits (8),
QuantizeGenericBits (12),
UnifiedQuantization (false)
{}
bool DracoCompression; //!< flag to use Draco compression (FALSE by default). If it is TRUE, compression is used
int CompressionLevel; //!< Draco compression level [0-10] (7 by default)
int QuantizePositionBits; //!< quantization bits for position attribute (14 by default)
int QuantizeNormalBits; //!< quantization bits for normal attribute (10 by default)
int QuantizeTexcoordBits; //!< quantization bits for texture coordinate attribute (12 by default)
int QuantizeColorBits; //!< quantization bits for color attributes (8 by default)
int QuantizeGenericBits; //!< quantization bits for skinning and custom attributes (12 by default)
bool UnifiedQuantization; //!< quantize positions of all primitives using the same quantization grid (FALSE by default)
};
#endif

55
src/XSDRAWSTLVRML/XSDRAWSTLVRML.cxx
View File

@ -44,6 +44,7 @@
#include <Quantity_Color.hxx>
#include <Quantity_HArray1OfColor.hxx>
#include <Quantity_NameOfColor.hxx>
#include <RWGltf_DracoParameters.hxx>
#include <RWGltf_CafReader.hxx>
#include <RWGltf_CafWriter.hxx>
#include <RWMesh_FaceIterator.hxx>
@ -384,6 +385,7 @@ static Standard_Integer WriteGltf (Draw_Interpretor& theDI,
bool toMergeFaces = false, toSplitIndices16 = false;
RWMesh_NameFormat aNodeNameFormat = RWMesh_NameFormat_InstanceOrProduct;
RWMesh_NameFormat aMeshNameFormat = RWMesh_NameFormat_Product;
RWGltf_DracoParameters aDracoParameters;
for (Standard_Integer anArgIter = 1; anArgIter < theNbArgs; ++anArgIter)
{
TCollection_AsciiString anArgCase (theArgVec[anArgIter]);
@ -516,6 +518,44 @@ static Standard_Integer WriteGltf (Draw_Interpretor& theDI,
{
toEmbedTexturesInGlb = false;
}
else if (anArgCase == "-draco")
{
aDracoParameters.DracoCompression = Draw::ParseOnOffIterator(theNbArgs, theArgVec, anArgIter);
}
else if (anArgCase == "-compressionlevel" && (anArgIter + 1) < theNbArgs
&& Draw::ParseInteger(theArgVec[anArgIter + 1], aDracoParameters.CompressionLevel))
{
++anArgIter;
}
else if (anArgCase == "-quantizepositionbits" && (anArgIter + 1) < theNbArgs
&& Draw::ParseInteger(theArgVec[anArgIter + 1], aDracoParameters.QuantizePositionBits))
{
++anArgIter;
}
else if (anArgCase == "-quantizenormalbits" && (anArgIter + 1) < theNbArgs
&& Draw::ParseInteger(theArgVec[anArgIter + 1], aDracoParameters.QuantizeNormalBits))
{
++anArgIter;
}
else if (anArgCase == "-quantizetexcoordbits" && (anArgIter + 1) < theNbArgs
&& Draw::ParseInteger(theArgVec[anArgIter + 1], aDracoParameters.QuantizeTexcoordBits))
{
++anArgIter;
}
else if (anArgCase == "-quantizecolorbits" && (anArgIter + 1) < theNbArgs
&& Draw::ParseInteger(theArgVec[anArgIter + 1], aDracoParameters.QuantizeColorBits))
{
++anArgIter;
}
else if (anArgCase == "-quantizegenericbits" && (anArgIter + 1) < theNbArgs
&& Draw::ParseInteger(theArgVec[anArgIter + 1], aDracoParameters.QuantizeGenericBits))
{
++anArgIter;
}
else if (anArgCase == "-unifiedquantization")
{
aDracoParameters.UnifiedQuantization = Draw::ParseOnOffIterator(theNbArgs, theArgVec, anArgIter);
}
else
{
Message::SendFail() << "Syntax error at '" << theArgVec[anArgIter] << "'";
@ -547,6 +587,7 @@ static Standard_Integer WriteGltf (Draw_Interpretor& theDI,
aWriter.SetToEmbedTexturesInGlb (toEmbedTexturesInGlb);
aWriter.SetMergeFaces (toMergeFaces);
aWriter.SetSplitIndices16 (toSplitIndices16);
aWriter.SetCompressionParameters(aDracoParameters);
aWriter.ChangeCoordinateSystemConverter().SetInputLengthUnit (aScaleFactorM);
aWriter.ChangeCoordinateSystemConverter().SetInputCoordinateSystem (aSystemCoordSys);
aWriter.Perform (aDoc, aFileInfo, aProgress->Start());
@ -2366,6 +2407,9 @@ void XSDRAWSTLVRML::InitCommands (Draw_Interpretor& theCommands)
"\n\t\t: [-forceUVExport]=0 [-texturesSeparate]=0 [-mergeFaces]=0 [-splitIndices16]=0"
"\n\t\t: [-nodeNameFormat {empty|product|instance|instOrProd|prodOrInst|prodAndInst|verbose}]=instOrProd"
"\n\t\t: [-meshNameFormat {empty|product|instance|instOrProd|prodOrInst|prodAndInst|verbose}]=product"
"\n\t\t: [-draco]=0 [-compressionLevel {0-10}]=7 [-quantizePositionBits Value]=14 [-quantizeNormalBits Value]=10"
"\n\t\t: [-quantizeTexcoordBits Value]=12 [-quantizeColorBits Value]=8 [-quantizeGenericBits Value]=12"
"\n\t\t: [-unifiedQuantization]=0"
"\n\t\t: Write XDE document into glTF file."
"\n\t\t: -trsfFormat preferred transformation format"
"\n\t\t: -systemCoordSys system coordinate system; Zup when not specified"
@ -2374,7 +2418,16 @@ void XSDRAWSTLVRML::InitCommands (Draw_Interpretor& theCommands)
"\n\t\t: -forceUVExport always export UV coordinates"
"\n\t\t: -texturesSeparate write textures to separate files"
"\n\t\t: -nodeNameFormat name format for Nodes"
"\n\t\t: -meshNameFormat name format for Meshes",
"\n\t\t: -meshNameFormat name format for Meshes"
"\n\t\t: -draco use Draco compression 3D geometric meshes"
"\n\t\t: -compressionLevel draco compression level [0-10] (by default 7), a value of 0 will apply sequential encoding and preserve face order"
"\n\t\t: -quantizePositionBits quantization bits for position attribute when using Draco compression (by default 14)"
"\n\t\t: -quantizeNormalBits quantization bits for normal attribute when using Draco compression (by default 10)"
"\n\t\t: -quantizeTexcoordBits quantization bits for texture coordinate attribute when using Draco compression (by default 12)"
"\n\t\t: -quantizeColorBits quantization bits for color attribute when using Draco compression (by default 8)"
"\n\t\t: -quantizeGenericBits quantization bits for skinning attribute (joint indices and joint weights)"
"\n and custom attributes when using Draco compression (by default 12)"
"\n\t\t: -unifiedQuantization quantization is applied on each primitive separately if this option is false",
__FILE__, WriteGltf, g);
theCommands.Add ("writegltf",
"writegltf shape file",

16
tests/de_mesh/gltf_write/010 Normal file
View File

@ -0,0 +1,16 @@
puts "========"
puts "0032867: Data Exchange - Implement Draco compression for writing glTF"
puts "Test case exporting model into glb (binary glTF) file."
puts "========"
Close D0 -silent
ReadGltf D0 [locate_data_file bug32867_010.glb]
set aGltfFile1 "${imagedir}/${casename}_tmp1.glb"
set aGltfFile2 "${imagedir}/${casename}_tmp2.glb"
WriteGltf D0 "$aGltfFile1" -draco on -mergefaces
WriteGltf D0 "$aGltfFile2" -draco on
ReadGltf D1 "$aGltfFile1"
ReadGltf D "$aGltfFile2"

16
tests/de_mesh/gltf_write/Diamond Normal file
View File

@ -0,0 +1,16 @@
puts "========"
puts "0032867: Data Exchange - Implement Draco compression for writing glTF"
puts "Test case exporting model into glb (binary glTF) file."
puts "========"
Close D0 -silent
ReadGltf D0 [locate_data_file bug32867_Diamond.glb]
set aGltfFile1 "${imagedir}/${casename}_tmp1.glb"
set aGltfFile2 "${imagedir}/${casename}_tmp2.glb"
WriteGltf D0 "$aGltfFile1" -draco on
WriteGltf D0 "$aGltfFile2" -draco on -mergefaces
ReadGltf D1 "$aGltfFile1"
ReadGltf D "$aGltfFile2"

18
tests/de_mesh/gltf_write/as1draco Normal file
View File

@ -0,0 +1,18 @@
puts "========"
puts "0032867: Data Exchange - Implement Draco compression for writing glTF"
puts "Test case exporting model into glb (binary glTF) file."
puts "========"
Close D0 -silent
ReadStep D0 [locate_data_file as1-oc-214-mat.stp]
XGetOneShape ss D0
incmesh ss 1.0
set aGltfFile1 "${imagedir}/${casename}_tmp1.glb"
set aGltfFile2 "${imagedir}/${casename}_tmp2.glb"
WriteGltf D0 "$aGltfFile1" -draco on
WriteGltf D0 "$aGltfFile2" -draco on -mergefaces
ReadGltf D1 "$aGltfFile1"
ReadGltf D "$aGltfFile2"

16
tests/de_mesh/gltf_write/bearing Normal file
View File

@ -0,0 +1,16 @@
puts "========"
puts "0032867: Data Exchange - Implement Draco compression for writing glTF"
puts "Test case exporting model into glb (binary glTF) file."
puts "========"
restore [locate_data_file bearing.brep] b
incmesh b 0.1
set aGltfFile1 "${imagedir}/${casename}_tmp1.glb"
set aGltfFile2 "${imagedir}/${casename}_tmp2.glb"
WriteGltf b "$aGltfFile1" -draco on
WriteGltf b "$aGltfFile2" -draco on -mergefaces
ReadGltf D0 "$aGltfFile1"
ReadGltf D "$aGltfFile2"

16
tests/de_mesh/gltf_write/bull Normal file
View File

@ -0,0 +1,16 @@
puts "========"
puts "0032867: Data Exchange - Implement Draco compression for writing glTF"
puts "Test case exporting model into glb (binary glTF) file."
puts "========"
Close D0 -silent
ReadGltf D0 [locate_data_file bug32867_bull.glb]
set aGltfFile1 "${imagedir}/${casename}_tmp1.glb"
set aGltfFile2 "${imagedir}/${casename}_tmp2.glb"
WriteGltf D0 "$aGltfFile1" -draco on
WriteGltf D0 "$aGltfFile2" -draco on -mergefaces
ReadGltf D1 "$aGltfFile1"
ReadGltf D "$aGltfFile2"

18
tests/de_mesh/gltf_write/screw Normal file
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@ -0,0 +1,18 @@
puts "========"
puts "0032867: Data Exchange - Implement Draco compression for writing glTF"
puts "Test case exporting model into glb (binary glTF) file."
puts "========"
Close D0 -silent
ReadStep D0 [locate_data_file screw.step]
XGetOneShape ss D0
incmesh ss 1.0
set aGltfFile1 "${imagedir}/${casename}_tmp1.glb"
set aGltfFile2 "${imagedir}/${casename}_tmp2.glb"
WriteGltf D0 "$aGltfFile1" -draco on -mergefaces
WriteGltf D0 "$aGltfFile2" -draco on
ReadGltf D1 "$aGltfFile1"
ReadGltf D "$aGltfFile2"

17
tests/de_mesh/gltf_write/soapbox Normal file
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puts "========"
puts "0032867: Data Exchange - Implement Draco compression for writing glTF"
puts "Test case exporting model into glb (binary glTF) file."
puts "========"
ReadStep D0 [locate_data_file ec_soapbox-A.stp]
XGetOneShape ss D0
incmesh ss 1.0
set aGltfFile1 "${imagedir}/${casename}_tmp1.glb"
set aGltfFile2 "${imagedir}/${casename}_tmp2.glb"
WriteGltf D0 "$aGltfFile1" -draco on
WriteGltf D0 "$aGltfFile2" -draco on -mergefaces
ReadGltf D1 "$aGltfFile1"
ReadGltf D "$aGltfFile2"

20
tests/de_mesh/gltf_write/test Normal file
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puts "========"
puts "0032867: Data Exchange - Implement Draco compression for writing glTF"
puts "Test case exporting model into glb (binary glTF) file."
puts "========"
Close D0 -silent
ReadGltf D0 [locate_data_file bug32867_test.glb]
set aGltfFile1 "${imagedir}/${casename}_tmp1.glb"
set aGltfFile2 "${imagedir}/${casename}_tmp2.glb"
WriteGltf D0 "$aGltfFile1" -draco on
WriteGltf D0 "$aGltfFile2" -draco on -mergefaces
ReadGltf D1 "$aGltfFile1"
XGetOneShape s1 D1
checktrinfo s1 -tri 9366
ReadGltf D "$aGltfFile2"
XGetOneShape s2 D
checktrinfo s2 -tri 9366