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jackassol

BLEND NORMALS

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Hello, i added a simple Spline und copied some rectangels on it. (PICTURE 1)

Now i wanted to blend the normals, so that the bottom rectangels always have the direction of the ground (PICTURE 2)

Does anyone know how i can do this?

i posted my hip file aswell

best

1.PNG

3.png

spline.hipnc

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You can blend values (i.e. @N vs. @up) by adding to multiplications with each other:

@N = (@N * (1 - mix) ) + (@up * mix);

mix and 1 - mix are controlling how much influence @N and @up get on each point. So after polyframe you could put this into a wrangle:

float mix = @ptnum / float(@numpt - 1);
vector up = {0, 1, 0};
@N = (@N * (1 - mix) ) + (up * mix);
@N = normalize(@N);

 

blending_normals.hipnc

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You change the falloff with a ramp by adding

mix = chramp('change_mix', mix);

 and clicking on the little icon appearing right to your code box.

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