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Gocator Line Profile Sensors: User Manual

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k64f height = rangeSrc[index] * scale->z + offset->z;

Extracting height information from profiles and surfaces.

The TestProfileSelect and TestSurfaceSelect examples show how to perform these

operations.

Setup and Region Info during Tool Initialization

Memory allocation is often done in the VInit or VStart function. To retrieve sensor and data

information such as active area settings and data scale outside of VProcess, you can use the following

function:

GdkDataInfo info = GdkSensorInfo_DataSource(GdkTool_SensorInfo(tool), GDK_DATA_SOURCE_

TOP);

Computing Region Based on the Offset from an Anchor Source

Just like built-in measurement tools, custom tools created with the GDKcan be anchored to another tool

(GDK-based tools or built-in tools).

To compute the offset region:

TestToolClass* obj = TestTool_Cast_(tool);

GdkParams params = GdkToolCfg_Parameters(config);

const kPoint3d64f* anchor = GdkToolInput_AnchorPosition(input);

GdkRegionXZ64f offsetRegion = {k64F_NULL, k64F_NULL, k64F_NULL, k64F_NULL };

param = GdkParams_Find(params, "Region");

obj->region = *GdkParam_AsProfileRegion(param);

offsetRegion = obj->region;

offsetRegion.x += anchor->x;

offsetRegion.z += anchor->z;

In the code above, we first retrieve the tool’s region settings (before anchoring is applied), and then

adjust the region based on the results from the anchored source in VProcess. If the anchored source

fails, the tools will not be invoked.

The TestProfileSelect and TestSurfaceSelect examples show how to extract height

information from anchored regions.

For more information on anchoring, see Measurement Anchoring in the Gocator user manual.

Part Matching

When part matching is enabled, the tool receives translated and corrected surface data. If part matching

fails for the current scan (for example, the quality score is too low), the tools will not be invoked.

For more information on part matching, see Part Matching in the Gocator user manual.

Accessing Sensor Local Storage

You can access a sensor's local storage by using the kFile API.

For example, to read and write a file to a sensor's storage, you could use the following:

LMI Technologies Gocator 2500 Series User Manual

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