OpenCascade/occt
1
0
Fork 0
mirror of https://git.dev.opencascade.org/repos/occt.git synced 2025-08-14 13:30:48 +03:00
Code Activity

0031956: Visualization - provide Image_AlienPixMap::Save() writing into a memory buffer instead of a file

Browse Source 
Added two new Image_AlienPixMap::Save() overloads, taking std::ostream or memory buffer arguments.
This commit is contained in:
mzernova
2021-11-19 07:11:21 +00:00
parent 6aa053ae00
commit b47b7e69f7
4 changed files with 750 additions and 197 deletions
Download Patch File Download Diff File Expand all files Collapse all files

117
src/QABugs/QABugs_1.cxx
View File

@@ -387,11 +387,11 @@ static Standard_Integer OCC361bug (Draw_Interpretor& di, Standard_Integer nb, co
//function : OCC30182
//purpose : Testing different interfaces of Image_AlienPixMap::Load()
//=======================================================================
static Standard_Integer OCC30182 (Draw_Interpretor& , Standard_Integer theNbArgs, const char** theArgVec)
static Standard_Integer OCC30182 (Draw_Interpretor& di, Standard_Integer theNbArgs, const char** theArgVec)
{
if (ViewerTest::CurrentView().IsNull())
{
std::cout << "Error: no active view\n";
di << "Error: no active view\n";
return 1;
}
@@ -430,13 +430,13 @@ static Standard_Integer OCC30182 (Draw_Interpretor& , Standard_Integer theNbArgs
}
else
{
std::cout << "Syntax error at '" << anArg << "'\n";
di << "Syntax error at '" << anArg << "'\n";
return 1;
}
}
if (anImgPath.IsEmpty())
{
std::cout << "Syntax error: wrong number of arguments\n";
di << "Syntax error: wrong number of arguments\n";
return 1;
}
@@ -454,7 +454,7 @@ static Standard_Integer OCC30182 (Draw_Interpretor& , Standard_Integer theNbArgs
std::shared_ptr<std::istream> aFile = aFileSystem->OpenIStream (anImgPath, std::ios::in | std::ios::binary);
if (aFile.get() == NULL)
{
std::cout << "Syntax error: image file '" << anImgPath << "' cannot be found\n";
di << "Syntax error: image file '" << anImgPath << "' cannot be found\n";
return 1;
}
if (anOffset != 0)
@@ -469,13 +469,13 @@ static Standard_Integer OCC30182 (Draw_Interpretor& , Standard_Integer theNbArgs
aFile->seekg (anOffset);
if (aLen <= 0)
{
std::cout << "Syntax error: wrong offset\n";
di << "Syntax error: wrong offset\n";
return 1;
}
NCollection_Array1<Standard_Byte> aBuff (1, aLen);
if (!aFile->read ((char* )&aBuff.ChangeFirst(), aBuff.Size()))
{
std::cout << "Error: unable to read file\n";
di << "Error: unable to read file\n";
return 1;
}
if (!anImage->Load (&aBuff.ChangeFirst(), aBuff.Size(), anImgPath))
@@ -510,6 +510,107 @@ static Standard_Integer OCC30182 (Draw_Interpretor& , Standard_Integer theNbArgs
return 0;
}
//=======================================================================
//function : OCC31956
//purpose : Testing Image_AlienPixMap::Save() overload for saving into a memory buffer or stream
//=======================================================================
static Standard_Integer OCC31956 (Draw_Interpretor& di, Standard_Integer theNbArgs, const char** theArgVec)
{
if (ViewerTest::CurrentView().IsNull())
{
di << "Error: no active view\n";
return 1;
}
if (theNbArgs != 3 && theNbArgs != 5)
{
di << "Syntax error: wrong number of arguments\n";
return 1;
}
bool useStream = false;
TCollection_AsciiString aTempImgPath;
if (theNbArgs == 5)
{
TCollection_AsciiString anArg (theArgVec[3]);
anArg.LowerCase();
if (anArg == "-stream")
{
useStream = true;
aTempImgPath = theArgVec[4];
}
else
{
di << "Syntax error at '" << anArg << "'\n";
return 1;
}
}
TCollection_AsciiString aPrsName, anImgPath;
aPrsName = theArgVec[1];
anImgPath = theArgVec[2];
Handle(Image_AlienPixMap) anImage = new Image_AlienPixMap();
const Handle(OSD_FileSystem)& aFileSystem = OSD_FileSystem::DefaultFileSystem();
opencascade::std::shared_ptr<std::istream> aFile = aFileSystem->OpenIStream (anImgPath, std::ios::in | std::ios::binary);
if (aFile.get() == NULL)
{
di << "Syntax error: image file '" << anImgPath << "' cannot be found\n";
return 1;
}
aFile->seekg (0, std::ios::end);
Standard_Integer aLen = (Standard_Integer )aFile->tellg();
aFile->seekg (0);
if (!anImage->Load (*aFile, anImgPath))
{
return 0;
}
Handle(Image_AlienPixMap) aControlImg = new Image_AlienPixMap();
if (useStream)
{
opencascade::std::shared_ptr<std::ostream> aTempFile = aFileSystem->OpenOStream (aTempImgPath, std::ios::out | std::ios::binary);
if (aTempFile.get() == NULL)
{
di << "Error: image file '" << aTempImgPath << "' cannot be open\n";
return 0;
}
if (!anImage->Save (*aTempFile, aTempImgPath))
{
di << "Error: failed saving file using stream '" << aTempImgPath << "'\n";
return 0;
}
aTempFile.reset();
aControlImg->Load (aTempImgPath);
}
else
{
NCollection_Array1<Standard_Byte> aBuff (1, aLen + 2048);
if (!anImage->Save (&aBuff.ChangeFirst(), aBuff.Size(), anImgPath))
{
di << "Error: failed saving file using buffer'" << anImgPath << "'\n";
return 0;
}
aControlImg->Load (&aBuff.ChangeFirst(), aBuff.Size(), anImgPath);
}
TopoDS_Shape aShape = BRepPrimAPI_MakeBox (100.0 * aControlImg->Ratio(), 100.0, 1.0).Shape();
Handle(AIS_Shape) aPrs = new AIS_Shape (aShape);
aPrs->SetDisplayMode (AIS_Shaded);
aPrs->Attributes()->SetupOwnShadingAspect();
const Handle(Graphic3d_AspectFillArea3d)& anAspect = aPrs->Attributes()->ShadingAspect()->Aspect();
anAspect->SetShadingModel (Graphic3d_TOSM_UNLIT);
anAspect->SetTextureMapOn (true);
anAspect->SetTextureMap (new Graphic3d_Texture2D(aControlImg));
if (aControlImg->IsTopDown())
{
anAspect->TextureMap()->GetParams()->SetTranslation (Graphic3d_Vec2 (0.0f, -1.0f));
anAspect->TextureMap()->GetParams()->SetScale (Graphic3d_Vec2 (1.0f, -1.0f));
}
ViewerTest::Display (aPrsName, aPrs, true, true);
return 0;
}
void QABugs::Commands_1(Draw_Interpretor& theCommands) {
const char *group = "QABugs";
@@ -527,5 +628,7 @@ void QABugs::Commands_1(Draw_Interpretor& theCommands) {
theCommands.Add ("OCC30182",
"OCC30182 name image [-offset Start] [-fileName] [-stream] [-memory]\n"
"Decodes image either by passing file name, file stream or memory stream", __FILE__, OCC30182, group);
theCommands.Add ("OCC31956", "OCC31956 name image [-stream tempImage]\n"
"Loads image and saves it into memory buffer or stream then loads it back", __FILE__, OCC31956, group);
return;
}