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<p>Hello vtk guys,</p>

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<p>I simply use spheres as bubbles, but with solid appearance and default lightning by vtk, which looks not good. I suppose that texture, opacity, and lightning should be added to them to make them plausible.  I did some research, and tried different ways,

 but cannot get a great one. I was wondering if anyone did this before or have any hint to achieve something like the ones by below link.</p>

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<p><a href="https://www.google.co.uk/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=&url=https%3A%2F%2Fwww.vectorstock.com%2Froyalty-free-vector%2Fbubble-soap-light-vector-1558013&bvm=bv.126130881,d.ZGg&psig=AFQjCNGRoch9fmkACKiiotg_Tz1F6Smtaw&ust=1467922375235773" class="OWAAutoLink" id="LPlnk291670">https://www.google.co.uk/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=&url=https%3A%2F%2Fwww.vectorstock.com%2Froyalty-free-vector%2Fbubble-soap-light-vector-1558013&bvm=bv.126130881,d.ZGg&psig=AFQjCNGRoch9fmkACKiiotg_Tz1F6Smtaw&ust=1467922375235773</a><br>

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<p>best regards,</p>

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<p>Chiang</p>

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