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[MSCE U13 C++]点云导入和导出添加进度条的问题

nian chen
Offline

老师，您好

       我在导入和导出点云的时候，由于界面长时间出现未响应的状态，需要加入进度条，我参考了论坛上符老师的一个例子，如下：

void completionBarTest()
{
	WString   txtLine;
	int       percent, totLines = 45267;
	MSDialogP cmplDbP = mdlDialog_completionBarOpen(L"Reading ASC DEM DataFile ...");
	mdlDialog_completionBarUpdate(cmplDbP, NULL, 0);
	BeFileStatus status;
	BeTextFilePtr fp = BeTextFile::Open(status, L"D:\\Foo-src\\MDL.V8i\\NorthStar\\catenary\\test\\13.asc", TextFileOpenType::Read, TextFileOptions::KeepNewLine);
	for (int i = 0; i<totLines; i++)
	{
	    fp->GetLine (txtLine);
		percent = i * 100 / totLines;
		if (percent > 100) percent = 100;
		mdlDialog_completionBarUpdate(cmplDbP, NULL, percent);
	}
	mdlDialog_completionBarClose(cmplDbP);
	fp->Close();
}

可以出现进度条对话框，但是进度条并不会更新。后来我发现API文档中自带了点云导入和导出的进度接口IPointCloudImportProgress和IPointCloudPodWriterProgress，但是论坛上找不到相关的资料。请问一下，这两个接口该怎么使用？可以提供一下相关的例子？

Parents Reply
  • +1 Offline in reply to nian chen

    如下代码可以出现进度条，但是每个文件一次进度展示，没有用双进度条。

    ...
#include <PointCloud\PointCloudApi.h>
...

...
USING_NAMESPACE_BENTLEY_POINTCLOUD
....

MSDialogP g_cmplDbP;
struct MyPointCloudImportProgress : public IPointCloudImportProgress
{
	virtual bool _OnProgress(WCharCP filename, Int32 TotalPercentage, Int32 FilePercentage, ConvertPhase step)
	{
		mdlDialog_completionBarUpdate(g_cmplDbP, filename, FilePercentage);
		return true;
	}
	virtual void _OnError(WCharCP message)
	{
	}
};
void importPointCloud()
{
	g_cmplDbP = mdlDialog_completionBarOpen(L"PointCloud Importing ...");
	mdlDialog_completionBarUpdate(g_cmplDbP, NULL, 0);

	IPointCloudImporterPtr importer = IPointCloudImporter::CreateImporter(L"PointCloud Importer", *ACTIVEMODEL);
	BeFileListIterator myIter(L"D:\\ValuableQuestions\\0075.LAS-PointCloud", true);
	BeFileName myName;
	while (SUCCESS == myIter.GetNextFileName(myName))
	{
		importer->AddImportFile(myName.GetName());
	}
	MyPointCloudImportProgress progress;
	importer->SetImportProgress(progress);
	importer->SetOutputFileName(L"C:\\temp");
	importer->SetMultipleOutput(true);
	importer->ConvertToPOD();

	mdlDialog_completionBarClose(g_cmplDbP);
}



    Answer Verified By: nian chen 

Children
  • 0 Offline in reply to Yongan.Fu

    符老师，我现在可以用鼠标选中一块点云导出了，麻烦您可以再测试一下IPointCloudPodWriterProgress接口？我写了一个测试代码，进度条还是不能更新，如果您有时间，麻烦您再帮忙测试一下，谢谢。

    /**************点云另存为pod进度条测试代码*****************/
bvector<Dpoint3d> rand_point;
rand_point.resize(1000*10000);
for (int i = 0; i < 1000 * 10000; ++i)
{
	rand_point[i].x = 1024 * rand() / (RAND_MAX + 1.0f);
	rand_point[i].y = 1024 * rand() / (RAND_MAX + 1.0f);
	rand_point[i].z = 1024 * rand() / (RAND_MAX + 1.0f);
}
StatusInt stat;
PointCloud::PointCloudPodWriter podW;
//将点云导出为pod
UChar ch = 0;
stat = podW.Initialize(); //Load the dll to write a pod file.
if (stat != SUCCESS)
{
	mdlDialog_dmsgsPrint(L"The pod File initialize was failed!");
}
WCharCP filename = L"C:\\mypod.pod";
stat = podW.StartStream(filename);
if (stat != SUCCESS)
{
	mdlDialog_dmsgsPrint(L"The startstream was completed failed!");
}
//podW.SetProgressCallback(myProcessBar);
PointCloud::PointCloudPodWriter::AddGroup(/*podW.Group_GenNormals | */podW.Group_RescaleIntensities, L"Group");
stat = podW.AddCloud(/*podW.Cloud_Normal | */podW.Cloud_Intensity, L"myPod", NULL, 0, 0);
if (stat != SUCCESS)
{
	mdlDialog_dmsgsPrint(L"create cloud failed!");
}
for (int j = 0; j < 1000 * 10000; ++j)
{
	stat = podW.AddPoint(rand_point[j], NULL, 1000, NULL, ch);
	//myProcessBar._OnProgress(j * 100 / 10000000);
	//mdlDialog_completionBarUpdate(g_cmplDbP, filename, j * 100 / 10000000);
}
stat = podW.EndStream();
if (stat != SUCCESS)
{
	mdlDialog_dmsgsPrint(L"EndStream failed!");
}
stat = podW.BuildPod();
if (stat != SUCCESS)
{
	mdlDialog_dmsgsPrint(L"BuildPod failed!");
}
//mdlDialog_completionBarClose(g_cmplDbP);

  • 0 Offline in reply to nian chen

    我从你以上代码中没有看到你声明了一个派生于IPointCloudPodWriterProgress的一个类，并在该类中重载_OnProgress函数呀。

    请仔细读懂我给你代码，然后模仿着写就应该可以的。



  • 0 Offline in reply to Yongan.Fu

    符老师，不好意思，代码上传的不完整。我试了很多次，还是不成功。

    struct MyPointCloudExportProgress : public IPointCloudPodWriterProgress
{
	MyPointCloudExportProgress(WCharCP filename)
	{
		m_filename = filename;
	}
	//重写
	virtual void _OnProgress(float progress)
	{
		mdlDialog_completionBarUpdate(g_cmplDbP, m_filename, progress);
	}
public:
	WCharCP m_filename;
};

void ExportPodFile(WCharCP unparsed)
{
	/**************点云另存为pod进度条测试代码*****************/
	bvector<Dpoint3d> rand_point;
	rand_point.resize(1000*10000);
	for (int i = 0; i < 1000 * 10000; ++i)
	{
		rand_point[i].x = 1024 * rand() / (RAND_MAX + 1.0f);
		rand_point[i].y = 1024 * rand() / (RAND_MAX + 1.0f);
		rand_point[i].z = 1024 * rand() / (RAND_MAX + 1.0f);
	}
	g_cmplDbP = mdlDialog_completionBarOpen(L"PointCloud Exporting ...");
	if (NULL == g_cmplDbP)
	{
		mdlDialog_dmsgsPrint(L"打开进度条失败!");
	}
	mdlDialog_completionBarUpdate(g_cmplDbP, NULL, 0);
	
	StatusInt stat;
	PointCloud::PointCloudPodWriter podW;
	//将点云导出为pod
	UChar ch = 0; 
	stat = podW.Initialize(); //Load the dll to write a pod file.
	if (stat != SUCCESS)
	{
		mdlDialog_dmsgsPrint(L"The pod File initialize was completed failed!");
	}
	WCharCP filename = L"C:\\Users\\51267\\Desktop\\mypod.pod";
	MyPointCloudExportProgress myProcessBar(filename);
	stat = podW.StartStream(filename);
	if (stat != SUCCESS)
	{
		mdlDialog_dmsgsPrint(L"The startstream was completed failed!");
	}
	PointCloud::PointCloudPodWriter::AddGroup(podW.Group_RescaleIntensities, L"Group");
	stat = podW.AddCloud(podW.Cloud_Intensity, L"myPod", NULL, 0, 0);
	if (stat != SUCCESS)
	{
		mdlDialog_dmsgsPrint(L"create cloud failed!");
	}
	podW.SetProgressCallback(myProcessBar);
	for (int j = 0; j < 1000 * 10000; ++j)
	{
		stat = podW.AddPoint(rand_point[j], NULL, 1000, NULL, ch);
		myProcessBar._OnProgress(j * 100 / 10000000);
		//mdlDialog_completionBarUpdate(g_cmplDbP, filename, j * 100 / 10000000);
	}
	stat = podW.EndStream();
	if (stat != SUCCESS)
	{
		mdlDialog_dmsgsPrint(L"EndStream failed!");
	}
	stat = podW.BuildPod();
	if (stat != SUCCESS)
	{
		mdlDialog_dmsgsPrint(L"BuildPod failed!");
	}
	mdlDialog_completionBarClose(g_cmplDbP);
}

  • 0 Offline in reply to nian chen

    如下代码可以，主要是要将传入的进度值乘以100。不过进度条大概显示到35%后就停止了。

    另外请注意，PointCloudPodWriter类下的各函数都是静态函数，故不需要单独声明一个对象后再调用，可直接调用。

    /*--------------------------------------------------------
| ExportPodFile
+-------------------------------------------------------*/
/* Cloud flags */
#define POD_CloudRetainOrder	1		//!< Indicates cloud point order to be retained
#define	POD_CloudRowMajor		2		//!< Indicates cloud point order is row first, then columns.
#define POD_CloudRGB			4		//!< Indicates cloud point RGB color value(s) (Red, Green, Blue)
#define POD_CloudIntensity		8		//!< Indicates cloud point intensity value
#define POD_CloudNormal			16		//!< Indicates cloud point surface normal
#define POD_CloudClassification	32		//!< Indicates cloud points classification

/* Group flags */
#define POD_GroupCombine			1	//!< Specifies group combine
#define POD_GroupGenNormals			2	//!< Specifies group generation of surface normals
#define POD_GroupRescaleIntensities 4	//!< Specifies group rescale of intensity values to optimize contrast

struct MyPointCloudExportProgress : public IPointCloudPodWriterProgress
{
	WCharCP m_filename;
	MyPointCloudExportProgress(WCharCP filename)
	{
		m_filename = filename;
	}
	virtual void _OnProgress(float progress)
	{
		mdlDialog_completionBarUpdate(g_cmplDbP, m_filename, 100*progress);
	}
};
void ExportPodFile(WCharCP filename)
{
	bvector<Dpoint3d> rand_point;
	rand_point.resize(1000 * 10000);
	for (int i = 0; i < 1000 * 10000; ++i)
	{
		rand_point[i].x = 1024 * rand() / (RAND_MAX + 1.0f);
		rand_point[i].y = 1024 * rand() / (RAND_MAX + 1.0f);
		rand_point[i].z = 1024 * rand() / (RAND_MAX + 1.0f);
	}
	g_cmplDbP = mdlDialog_completionBarOpen(L"PointCloud Exporting ...");
	mdlDialog_completionBarUpdate(g_cmplDbP, NULL, 0);

	PointCloudPodWriter::Initialize();
	MyPointCloudExportProgress myProcessBar(filename);
	PointCloudPodWriter::SetProgressCallback(myProcessBar);
	StatusInt stat = PointCloudPodWriter::StartStream(filename);
	if (stat != SUCCESS)
	{
		mdlDialog_dmsgsPrint(L"The startstream was completed failed!");
		return;
	}
	PointCloudPodWriter::AddGroup(POD_GroupRescaleIntensities, L"MyGroup");
	PointCloudPodWriter::AddCloud(POD_CloudIntensity, L"MyCloud", NULL, 0, 0);
	for (int j = 0; j < 1000 * 10000; ++j)
	{
		PointCloudPodWriter::AddPoint(rand_point[j], NULL, 1000, NULL, 0);
	}
	PointCloudPodWriter::EndStream();
	PointCloudPodWriter::BuildPod();
	mdlDialog_completionBarClose(g_cmplDbP);
}



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