Operation Workflow

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This topic introduces the basic workflow of using Mech-Eye API to control a laser profiler. The figure and descriptions in this topic use the class and method names of C++ Mech-Eye API. For the corresponding names of different languages, please refer to the example codes.

Discover

Call the discoverProfilers() method in the Profiler class to enumerate all currently connectable laser profilers and obtain the information of each laser profiler.

std::vector<mmind::eye::ProfilerInfo> profilerInfoList = mmind::eye::Profiler::discoverProfilers();

var profilerInfoList = Profiler.DiscoverProfilers();

Connect

After instantiating the Profiler class, call the connect() method in this class to connect to the corresponding laser profiler using the IP address or the device information obtained by the discoverProfilers() method.

mmind::eye::Profiler profiler;
mmind::eye::ErrorStatus status = profiler.connect(profilerInfoList[inputIndex]);

mmind::eye::Profiler profiler;
mmind::eye::ErrorStatus status = profiler.connect("192.168.0.10");

var profiler = new Profiler();
var status = profiler.Connect(profilerInfoList[inputIndex]);

var profiler = new Profiler();
var status = profiler.Connect("192.168.0.10");

Configure

Call the methods in the UserSetManager and UserSet classes to select the parameter group on the laser profiler and adjust the parameters.

Call the selectUserSet method in the UserSetManager class to select the parameter group to be used.

You can obtain all the available parameter groups on the laser profiler through the getAllUserSetNames() method in this class.

mmind::eye::UserSetManager userSetManager = profiler.userSetManager();
std::vector<std::string> userSets;
auto status = userSetManager.getAllUserSetNames(userSets);
status = userSetManager.selectUserSet(userSets.front());

var userSetManager = profiler.UserSetManager();
List<string> userSets = new List<string>();
var status = userSetManager.GetAllUserSetNames(ref userSets);
status = userSetManager.SelectUserSet(userSets[0]);

Call the getAvailableParameters() method in the UserSet class to obtain the information of all the parameters in the current parameter group and check the data type of each parameter.

mmind::eye::UserSet currentUserSet = profiler.currentUserSet();
std::vector<Parameter*> parameters = currentUserSet.getAvailableParameters();

var currentUserSet = profiler.CurrentUserSet();
var parameters = currentUserSet.GetAvailableParameters();

Call the getIntValue() and other similar methods in the UserSet class to obtain the current value of a parameter.

int exposureTime = 0;
auto status = currentUserSet.getIntValue(mmind::eye::brightness_settings::ExposureTime::name, exposureTime);

int exposureTime = 0;
var status = currentUserSet.GetIntValue(MMind.Eye.BrightnessSettings.ExposureTime.Name, ref exposureTime);

Call the setIntValue() and other similar methods in the UserSet class to set the value of a parameter.

auto status = currentUserSet.setIntValue(mmind::eye::brightness_settings::ExposureTime::name, 20);

var status = currentUserSet.SetIntValue(MMind.Eye.BrightnessSettings.ExposureTime.Name, 20);

Call the saveAllParametersToDevice() method in the UserSet class to save the set parameter values to the laser profiler.
- C++
- C#
auto status = currentUserSet.SaveAllParametersToDevice();
var status = currentUserSet.SaveAllParametersToDevice();

Start Acquisition

Call the startAcquisition() method in the Profiler class to enter the laser profiler into the acquisition ready status, where it can accept trigger signals for scanning.

If you use externally input signals to trigger data acquisition, the laser profiler starts to scan when it receives such a signal.

const auto status = currentUserSet.setEnumValue(
    mmind::eye::trigger_settings::DataAcquisitionTriggerSource::name,
    static_cast<int>(mmind::eye::trigger_settings::DataAcquisitionTriggerSource::Value::External));
auto status = profiler.startAcquisition();

var status = currentUserSet.SetEnumValue(
    MMind.Eye.TriggerSettings.DataAcquisitionTriggerSource.Name,
    (int)MMind.Eye.TriggerSettings.DataAcquisitionTriggerSource.Value.External);
var status = profiler.StartAcquisition();

If you use software to trigger data acquisition, call the triggerSoftware() method in the Profiler class to trigger scanning.

const auto status = currentUserSet.setEnumValue(
    mmind::eye::trigger_settings::DataAcquisitionTriggerSource::name,
    static_cast<int>(mmind::eye::trigger_settings::DataAcquisitionTriggerSource::Value::Software));
auto status = profiler.startAcquisition();
status = profiler.triggerSoftware();

var status = currentUserSet.SetEnumValue(
    MMind.Eye.TriggerSettings.DataAcquisitionTriggerSource.Name,
    (int)MMind.Eye.TriggerSettings.DataAcquisitionTriggerSource.Value.Software);
var status = profiler.StartAcquisition();
status = profiler.TriggerSoftware();

Retrieve Data

The data obtained by the laser profiler in a single round of data acquisition is returned in several batches. All batches of data must be retrieved first before the intensity image and depth map can be generated.

You can retrieve the data from the laser profiler in two ways:

Call the retrieveBatchData() method in the Profiler class. Calling this method once can obtain a single batch of data.
Define a callback function and call the registerAcquisitionCallBack() method in the Profiler class to register the callback function.

The callback function must be defined and registered before the Profiler class function is called.

The example codes for the two ways of retrieving data are provided below.

Call the retrieveBatchData() method in the Profiler class:

int dataWidth = 0;
auto status = currentUserSet.getIntValue(mmind::eye::scan_settings::DataPointsPerProfile::name, dataWidth);
mmind::eye::ProfileBatch batch(dataWidth);
status = profiler.retrieveBatchData(batch);

int dataWidth = 0;
var status = currentUserSet.GetIntValue(MMind.Eye.ScanSettings.DataPointsPerProfile.Name, ref dataWidth);
var batch = new ProfileBatch((ulong)dataWidth);
MMind.Eye.ErrorStatus status = profiler.RetrieveBatchData(ref batch);

Use a callback function:

namespace{
std::mutex kMutex;
void callbackFunc(const mmind::eye::ProfileBatch& batch, void* pUser)
{
    std::unique_lock<std::mutex> lock(kMutex);
    auto* outPutBatch = static_cast<mmind::eye::ProfileBatch*>(pUser);
    outPutBatch->append(batch);
}
}
int dataPoints = 0;
showError(currentUserSet.getIntValue(mmind::eye::scan_settings::DataPointsPerProfile::name, dataPoints));
mmind::eye::ProfileBatch profileBatch(dataPoints);
profiler.registerAcquisitionCallback(callbackFunc, &profileBatch);

private static readonly Mutex mut = new Mutex();
    private static void CallbackFunc(ref ProfileBatch batch, IntPtr pUser)
    {
        mut.WaitOne();
        GCHandle handle = GCHandle.FromIntPtr(pUser);
        var outputBatch = (handle.Target as ProfileBatch);
        outputBatch.Append(batch);
        mut.ReleaseMutex();
    }
int dataPoints = 0;
Utils.ShowError(currentUserSet.GetIntValue(MMind.Eye.ScanSettings.DataPointsPerProfile.Name, ref dataPoints));
var profileBatch = new ProfileBatch((ulong)dataPoints);
GCHandle handle = GCHandle.Alloc(profileBatch);
IntPtr param = (IntPtr)handle;
profiler.RegisterAcquisitionCallback(CallbackFunc, param);

Stop Acquisition

Call the stopAcquisition() method in the Profiler class to stop the acquisition ready status of the laser profiler, in order to avoid accidental triggering of scanning.

profiler.stopAcquisition();

profiler.StopAcquisition();

Disconnect

Call the disconnect() method in the Profiler class to disconnect from the current laser profiler.

profiler.disconnect();

profiler.Disconnect();

This topic introduced the basic workflow of using Mech-Eye API to control a laser profiler. The next topic provides the reference manual for Mech-Eye API.