C++: side-mask pattern node

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reference:

Cinemagraph

final render:

about this pattern node:

This pattern node is to calculate the angle between the normal on the object and the vector of the camera, which allows users to assign color/ texture base on sides.

code:

AberSideMask.args
AberSideMask.cpp

ui:

'Front Color' and 'Rear Color' are where the users chose color or connect the texture;
'Blur' is when the number getting bigger, 'Front Color' and 'Rear Color' can mix together;
'Swap_Colors' checkbox is to switch to different color/texture quickly without taking time to re-connect everything.

hypershade in Maya:

scene in Maya:

normals:

In my scene, I use this pattern node on two different objects.
Pictures below shows their normals.

function 'Swap_Colors' test:

original

check 'Swap_Color'

original

check 'Swap_Color'

function 'Blur' test:

vellum simulation in Houdini:

for the animation, I use 'vellumsolver' in Houdini to simulate the paper movement. Then I export the geometry and animation to alembic files, and reference those alembic files in Maya.

layers:

I shot the background footage, matched the lighting in Maya, and rendered two different render layers: beauty & reflection;
Because in my background image, the table is black, it really couldn't show the shadows on the table clearly when I did the test. So in the final render, I didn't render the shadows on the table.

Beauty Layer

Reflection Layer

I also used photoshop to get the alpha channel of my hands from the background image I took. So that in the later compositing in NukeX, I could get my hands on the top.

Background Image

Hands Alpha

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