On Fri, Jun 26, 2009 at 11:29:23AM +0200, Dan Matei wrote: > > Some time ago (about one year), when exporting the 3D view of the > data, the PNGs had transparent background. They have now (Gwyddion > 2.16 and GTK+ 2.12.9) white background. Could this come from the > different GTK version, or is it a 'hidden' option in Gwyddion?
There is no hidden option, in fact, I hear for the first time that the images can have transparent background (which sounds cool if it works for someone). I always get white background. It can depend on version of everything involved, Gtk+ possibly; GtkGLExt and OpenGL drivers more likely; other parts of the graphics subsystem and phase of the moon might influence it too. There was no change in the 3D view code between August 2007 and March 2009. So, if anything changed a year ago it did not change in Gwyddion. > And again in the 3D view, I wonder if it's possible to have more > control over the properties of the light source, namely degree of > intermixing between specular and diffuse. For certain images, when > selecting 1:1 representation, the distribution of contrast across the > image is not very great. Since the 3D surface consists of a single material it should be possible to achieve the same result by changing properties of the GL material. It is not as convenient as changing the light source properties though. Probably it would not be that hard to add more light source controls, but I must admit the 3D stuff scares me... Regards, Yeti ------------------------------------------------------------------------------ _______________________________________________ Gwyddion-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/gwyddion-users
