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<body class='hmmessage'><div dir='ltr'>hi all<div><br><br>i need some help on converting a mesh model from local origin cartesian (from a modelling tool) to a geocentric one.</div><div><br></div><div>i found the nice transform from WGS to (ECEF) GEOCENTRIC which i use to transform the model origin to a geocentric point.</div><div><br></div><div><div> CoordinateReferenceSystem targetCRS = PredefinedCRS.GEOCENTRIC;</div><div> CoordinateReferenceSystem sourceCRS = PredefinedCRS.WGS84_3D;</div><div> MathTransform tr = CRS.findMathTransform(sourceCRS, targetCRS);</div></div><div><br></div><div><br></div><div>i wish to use this point as my local origin for the rest of the model in geocentric coordinates.<br><br>i do NOT want to transform every point to ECEF (origin earth centre) , as it will introduce jitter to the visualation.</div><div>but rather transform the points to GEOCENTRIC coordinates *relative* to my own origin.</div><div><br></div><div>does that make any sense?<br><br>-lucio
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