Chaos Corona Forum
Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: Philip kelly on 2019-01-21, 15:32:13
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Cloth Sample Accuracy
I have been asked to render out boards with different cloth samples on them,for acoustic boards.
I have the samples physically, what is the best process to get the cloth perfect if that is possible, photograph plan down shot with diffuse light.
Is there a simple set up that can be purchased to get the lighting correct?
I also have another query.
I have 1 image with 16 different version of the material to change out.
What is the best process for the this, in vray I think it is the Vray switcher material, but I would prefer to use Corona?
Thank you
philip
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Can Admin respond to this if nobody else will.
Thank you
philip
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Can Admin respond to this if nobody else will.
Thank you
philip
Have patience, your posts were less than 7 hours apart. Besides it being a monday time zones are a thing as well.
I have the samples physically, what is the best process to get the cloth perfect if that is possible, photograph plan down shot with diffuse light.
Is there a simple set up that can be purchased to get the lighting correct?
Using a straight down photo during overcast daylight outside is the easiest, tried and tested method of capturing anything in VFX. Going for a direct PBR capture is quite a difficult task, maybe overkill for a material recreation.
I'd suggest you go with a material tutorial, there are one's made by the Corona team (https://corona-renderer.com/resources/tutorials). They will guide you in recreating materials. With a straight down photo as reference or part of a texture will propably do it.
If you really want to go the capture route, with color calibration on so on, dubcat did an exellent writeup about this. (https://forum.corona-renderer.com/index.php?topic=10409.0) Although again, this is time and ressource intensive, propably overkill.
As for the switcher thing, I read the Vray Doc (https://docs.chaosgroup.com/display/VRAY3MAYA/Switch+Material+|+VRaySwitchMtl) on what it does. I don't quite understand quite why you need a value in a material to change materials themselves... so I don't know about that.
However, 3dsMax always supported batch rendering (https://www.youtube.com/watch?v=0nAAfTOwzoo), which allows you to save state and render multiple materials / views / render settings. But again, someone else is more qualified to answer on that.
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Good Morning.
Thank you very much for the reply.
Apologies, point taken on the reply.
I am under pressure to get the work done, and wanted to be sure of the right method.
Thank you also for the links they are great, I do appreciate them.
Kind regards
Philip
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I recommend using a macbeth chart to get accurate colour representation as detailed in dubcat's process.
If you have access to swatch samples that are at least 8 inches long/wide and a flatbed scanner, I've had good results with scanning fabrics and then making them seamless in photoshop.
As for swapping out materials, I would just make a multi/sub-object material with all your fabric materials and then click and drag to swap the materials around when you need to render out a new version. then just use the render selected mode to render your variations.
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Mferster
Thank you very much for the feed back, all very helpful.
I have sample materials but very small.
Thank you
philip
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flatbed scanner + macbeth chart
Holy moly :D that's actually a really good idea!