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13 digitiser ADC values and screen coordinates. </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody> |
13 digitiser ADC values and screen coordinates. </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody> |
14 <p>Calibration is done through a user-side calibration application. </p> |
14 <p>Calibration is done through a user-side calibration application. </p> |
15 <p>The platform specific layer performs the following calculation to convert |
15 <p>The platform specific layer performs the following calculation to convert |
16 between ADC values and co-ordinates: </p> |
16 between ADC values and co-ordinates: </p> |
17 <fig id="GUID-932E1DED-C393-5C26-A08F-E270CF5DC90B"> |
17 <fig id="GUID-932E1DED-C393-5C26-A08F-E270CF5DC90B"> |
18 <image href="GUID-D6861A7A-1845-52AF-BB09-4B97E6B8AA13_d0e381106_href.png" placement="inline"/> |
18 <image href="GUID-D6861A7A-1845-52AF-BB09-4B97E6B8AA13_d0e386959_href.png" placement="inline"/> |
19 </fig> |
19 </fig> |
20 <p>Where the <b>R</b> matrix determines the scaling and rotation, and the <b>T</b> vector |
20 <p>Where the <b>R</b> matrix determines the scaling and rotation, and the <b>T</b> vector |
21 determines the translation. </p> |
21 determines the translation. </p> |
22 <p>This conversion is implemented by the platform specific layer's implementation |
22 <p>This conversion is implemented by the platform specific layer's implementation |
23 of <xref href="GUID-2EDAF642-2399-3594-986A-5E8A5EEA01B9.dita#GUID-2EDAF642-2399-3594-986A-5E8A5EEA01B9/GUID-A51F6890-2D47-3FCC-A51B-19479658E49F"><apiname>DDigitiser::DigitiserToScreen()</apiname></xref> and <xref href="GUID-2EDAF642-2399-3594-986A-5E8A5EEA01B9.dita#GUID-2EDAF642-2399-3594-986A-5E8A5EEA01B9/GUID-F85119E0-83DC-3C54-BDFC-4F156ADFE538"><apiname>DDigitiser::ScreenToDigitiser()</apiname></xref>. |
23 of <xref href="GUID-2EDAF642-2399-3594-986A-5E8A5EEA01B9.dita#GUID-2EDAF642-2399-3594-986A-5E8A5EEA01B9/GUID-A51F6890-2D47-3FCC-A51B-19479658E49F"><apiname>DDigitiser::DigitiserToScreen()</apiname></xref> and <xref href="GUID-2EDAF642-2399-3594-986A-5E8A5EEA01B9.dita#GUID-2EDAF642-2399-3594-986A-5E8A5EEA01B9/GUID-F85119E0-83DC-3C54-BDFC-4F156ADFE538"><apiname>DDigitiser::ScreenToDigitiser()</apiname></xref>. |