PDA

View Full Version : making surfaces disappear in 2018...



stylus10
12-31-2018, 11:59 AM
hi! just like the title says, what's the best way to do this? i have a node set with material mixer set up and i am dissolving to a surface with 100% transparency and 0% Everything else. yet i still see some of the surface, though it is much diminished (changed). what's the best way to make it go away entirely?

thanks so much for your help.

XswampyX
12-31-2018, 12:40 PM
hi! just like the title says, what's the best way to do this? i have a node set with material mixer set up and i am dissolving to a surface with 100% transparency and 0% Everything else. yet i still see some of the surface, though it is much diminished (changed). what's the best way to make it go away entirely?

thanks so much for your help.

The clip node input over there, on the right at the bottom, the green one.

Axis3d
12-31-2018, 12:41 PM
You could take that part of your model that is supposed to dissolve away and cut those polys and put them in a separate layer. Then in Layout, you could use the Object Dissolve to animate it vanishing.

stylus10
12-31-2018, 12:44 PM
thank you!! both great ideas.

stylus10
12-31-2018, 04:49 PM
okay the clip node works pretty well. i am using a scalar node to control it but there is no fade capability. at 0.5 or better it's on, and less, it's off. does anyone know how i can get it to fade? thanks.

Kryslin
12-31-2018, 05:12 PM
Clip map is all or nothing. So, you mix transparency, with the clip node. You'll wan't to reduce your specularity as transparency increases, and when things hit 100%, the clip map takes over.

MonroePoteet
12-31-2018, 06:34 PM
On the Surface to go 100% transparent, set the Index of Refraction to 1.0, the Transmittance color on the Surface to pure white and the Transmittance Distance to a "large enough" number depending on the size of the model. As well, if the Specular or Metallic characteristics are non-zero, you'll get surface artifacts from reflection / specularity.

All of these can be different earlier, but ramp down to the target values via an envelope, an expression or the node network.

mTp

MonroePoteet
12-31-2018, 08:32 PM
Here's a quick video showing enveloped Transparency (frames 0-30 going from 0.0 to 1.0), Index of Refraction (30-60, 1.5 to 1.0), Transmittance Color (60-90, up to white back down to gray), and Transmittance Distance (90-120, 0.2 to 1.0 and back down). Notice the "smudges" when either the Transmittance Color isn't white or the Transmittance Distance isn't "big enough" for the object size.

The "Heads Up Display" shows the value of each variable over time. The Transmittance Color value is gray going up to white as a percentage.

MOV File: 143755

mTp

stylus10
01-01-2019, 07:46 AM
great suggestions! i think you guys have got it. i really appreciate it.