Author Topic: Rocky River revisited  (Read 3284 times)

Offline dorianvan

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Re: Rocky River revisited
« Reply #15 on: July 09, 2015, 07:44:19 PM »
I like it. The screen wipes about 30 seconds in, are they different Terragen iterations or were they something else? Thanks.
-Dorian

Offline Hetzen

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Re: Rocky River revisited
« Reply #16 on: July 09, 2015, 10:48:30 PM »
They are builds on post processing. Exposure, colour correction, vignette to shift composition focus, lens flare, depth of field blur using TG z-depth pass, motion blur and chromatic aberration (how red and blue shift on a camera sensor through a lens), final curves and saturation. All external tweeks to TG.

It's kind of like processing a photograph negative towards a 'look'. Or how some of these Instagram presets work.

Online Kadri

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Re: Rocky River revisited
« Reply #17 on: July 09, 2015, 11:46:54 PM »

Basically an artistic kind of way to show how the scene was build :)

Offline Ben Martin

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Re: Rocky River revisited
« Reply #18 on: July 15, 2015, 07:18:53 PM »
Awesome Hetzen,

Great piece of art work.
About the water... mind to share the animation process and values?
I tried to animate water on Terragen once but nothing came out of it....  :P

Cheers

Offline Stranded

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Re: Rocky River revisited
« Reply #19 on: July 15, 2015, 11:03:22 PM »
Great work, thanks for sharing and for showing what is possible.

Offline Hetzen

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Re: Rocky River revisited
« Reply #20 on: July 16, 2015, 01:10:23 PM »
About the water... mind to share the animation process and values?
I tried to animate water on Terragen once but nothing came out of it....  :P

Cheers

Hello Ben

For the water, I didn't use the water shader, just a reflective shader, as I didn't need the transparency in this scene. This cuts down on render times.

I created a lake object, then plugged in a surface shader into this. I then created the subtle ripple displacement I wanted with a PF plugged into the displacement input on the surface shader.

To animate it, I used a Get Frame number shader then multiplied that with a vector. I use the vector to determine the direction I want the frame number to push the PF, so a vector of (-1,0,-1) on a compass would be South West. This is then plugged into a Vector Displacement shader, which is then plugged into a Transform Input shader. Then unplug the PF and connect it to this Transform, the output plugged back into the Surface Shader. As the frame progresses, the PF will be pushed 1m per frame, which will be way too fast. So open up the dialogue box of the Vector Displacement and put in a decimal value in the Final Multiplier. I figured that the water would be moving 10cm or 0.1m per second. I was using 25 frames per second, so divided 0.1m by 25 to find out how far the water moves per frame, so the decimal value I put into the Final Multiplier was 0.004.

To get the ripple to 'evolve' I went back to the PF and switched on 4D noise and played around with the setting until it looked natural. This is a good time to render some test frames to see if the movement is what you are looking for. So it's a good idea to switch everything off that will contribute to render time.

Once I got that, I plugged in a reflective shader into the Child input on the Surface shader. Done.

You could skip the Get frame process and animate a Transform shader, but for me this adds more work in getting things to move right. As TG will ramp the in and out of those key frames by default (the ripples will speed up and slow down) and working out where the PF should be in x,y,z is kind of a pain, especially if you want to extend the animation. I just have two things to set, the direction vector and the speed multiplier in the Vector Displacement shader. I use a similar setup to move clouds.

Offline Hannes

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Re: Rocky River revisited
« Reply #21 on: July 16, 2015, 04:14:13 PM »
"As TG will ramp the in and out of those key frames by default (the ripples will speed up and slow down) and working out where the PF should be in x,y,z is kind of a pain..."

Just go to the animation tab and switch the mode from TCB to linear

« Last Edit: July 16, 2015, 04:16:37 PM by Hannes »

Offline Hetzen

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Re: Rocky River revisited
« Reply #22 on: July 16, 2015, 06:22:51 PM »
"As TG will ramp the in and out of those key frames by default (the ripples will speed up and slow down) and working out where the PF should be in x,y,z is kind of a pain..."

Just go to the animation tab and switch the mode from TCB to linear

Yeah I understand that, just thought I'd point it out.  ;)