[Paraview-developers] ParaView and double precision Rendering

[Lodron, Gerald]

Hello

I made a paraview reader plugin which loads Point data of type double from an ASCII file (can be choosen as checkbox in reader parameter gui). It is important that point data type is double since our values have a huge offset, e.g.

Coordinate in float:      3376382.75	-325198.59375	-121298.125
Coordinate in double: 3376382.849028525874	-325198.60899497801438	-121298.12806414699298
(same ASCII input file of type double, above printings come from spreadsheet view so loading is correct)
(all my points have such small changes, I definitely can see those small changes in 3d)

The problem is: I load the dataset once in float and once in double ( I checked result in spreadsheed view) I cannot see any differences in 3d renderer when I swap visibility of float and double input (but you can see in spreadsheet). Is the double precision rendering not correct/not supported?
Any ideas?

Best regards,

Gerald Lodron
Machine Vision Applications
DIGITAL - Institute for Information and Communication Technologies

JOANNEUM RESEARCH Forschungsgesellschaft mbH
Steyrergasse 17, 8010 Graz, AUSTRIA

phone:  +43-316-876-1751         
fax: +43-316-876-1751
web:    http://www.joanneum.at/digital
e-mail: gerald.lodron at joanneum.at