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【Houdini】Camera Frustum

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FacebookのHoudiniグループページ(非公開)を眺めていたらCamera Frustumのやり方について書いている方がいらっしゃったので自分なりのやり方を書いてみた。
Screenshot from 2018-11-28 15-23-17.png
人によって様々なやり方があるCamera Frustumですが、ありがたいことにParticle Fluid Surfaceの中にその機能が予め作られている。
Screenshot from 2018-11-28 15-12-34.png
Particle Fluid SurfaceをAllow Editing of contentsして中にダイブしCtrl+FキーでCameraと入力し、それらしいノードを探す。
Screenshot from 2018-11-28 15-30-47.png
すると、camera_volume、group_from_camera、blast_outside_camera1という3つのノードがあり、それがCamera Frustumの機能を担っていることがわかる。
Screenshot from 2018-11-28 15-11-51.png
あとは、それをコピーし、HDAにするなりして使うだけ。
Screenshot from 2018-11-28 15-12-59.png
サンプルファイル
VolumeではなくVDBを使用するものも作ってみた。switchで切り替えれば使える。

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