function 'getframe' can't capture figures with transparent objects?

Qiu
2014 12 24
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I used trisurf to draw a 3-D polyhedron and wanted to record the figures when rotating it, saving as a *.gif file.
However, once I added 'facealpha' value to trisurf function, like
trisurf(k,x,y,z,'facealpha',.8);
then the getframe(gcf) can't record the frame when rotating, but just the first frame when record began. Once the facealpha was removed, everything went well.
So how should I record a GIF with transparent object?

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Qiu
Qiu
2014-12-24

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