Hi Chipp, also check out here for a version that will pop up a dialog box to ask you for the file name for the image file, if you want that:
http://moi3d.com/forum/index.php?webtag=MOI&msg=7542.2

These won't save as a transparent PNG though, the viewport background will be in there.

But if you export to AI or PDF format, the shaded image in those will have a transparent background. For PDF format the image is embedded in the PDF file, for AI format the image will be a separate .png file alongside the .ai file, the png file will have a "_bkgnd" appended to the file name like: filename_bkgnd.png

- Michael

Try this one:

script: /* Save to PNG */
var vp = moi.ui.getLastClickedViewport();
if (!vp) { vp = moi.ui.mainWindow.viewpanel.getViewport('3D'); }
var filename = moi.filesystem.GetSaveFileName( 'Save', ' (*.png)|*.png' );
var st = [], settings  = ["view.viewportBackgroundColor", "view.lineWidth", "grid.display", "grid.showXYAxes", "view.showAxisIcon", "view.meshAngle"];
for (var sv in settings) { st.push(moi[settings[sv].split('.')[0]][settings[sv].split('.')[1]] ); } 
moi.view.viewportBackgroundColor = 0xFFFFFF; 
moi.view.lineWidth = 3; 
moi.grid.display = false; 
moi.grid.showXYAxes = false; 
moi.view.showAxisIcon = false; 
moi.view.meshAngle = 3; 
vp.render( 4000, 2500 ).save(filename);
for (var sv in settings) { moi[settings[sv].split('.')[0]][settings[sv].split('.')[1]] = st.shift(); }

YAY Max!

Works PERFECTLY! :-)

For those who don't want to remove the CRs:

script: /* Save to PNG */ var vp = moi.ui.getLastClickedViewport(); if (!vp) { vp = moi.ui.mainWindow.viewpanel.getViewport('3D'); } var filename = moi.filesystem.GetSaveFileName( 'Save', ' (*.png)|*.png' ); var st = [], settings  = ["view.viewportBackgroundColor", "view.lineWidth", "grid.display", "grid.showXYAxes", "view.showAxisIcon", "view.meshAngle"]; for (var sv in settings) { st.push(moi[settings[sv].split('.')[0]][settings[sv].split('.')[1]] ); }  moi.view.viewportBackgroundColor = 0xFFFFFF;  moi.view.lineWidth = 3;  moi.grid.display = false;  moi.grid.showXYAxes = false;  moi.view.showAxisIcon = false;  moi.view.meshAngle = 3;  vp.render( 4000, 2500 ).save(filename); for (var sv in settings) { moi[settings[sv].split('.')[0]][settings[sv].split('.')[1]] = st.shift(); }