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Wrapping on Sphere & Photorealism
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* February 11, 2019, 01:22:52 AM
Just going through Henrys Photorealism in Turbocad page 29 on Spherical wrapping and just wanted to know if theres anything I need to know beforehand thats gunna stop me getting a successful wrapping result?  I need to learn these techniques before to doing a simple animation later. Then later I can use these techniques for the navy ship design just down the track with more complete animation.




 

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Daz
TCW V21, 2016-2019 PP, Animation Lab V5 & LightWorks rendering mostly.


* February 11, 2019, 02:17:25 AM
#1
Just going through Henrys Photorealism in Turbocad page 29 on Spherical wrapping and just wanted to know if theres anything I need to know beforehand thats gunna stop me getting a successful wrapping result?  I need to learn these techniques before to doing a simple animation later. Then later I can use these techniques for the navy ship design just down the track with more complete animation.

Hi Darryl,
http://www.textualcreations.ca/TurboCAD%20Tips/TurboCAD%20Tip%2023.pdf

I'm not sure if the link will be of help to you, but it might be a place to start.

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DonCW
2017 Pro with Light Works Plug in
2018 Platinum

Windows 10
There's so much to learn and not much time left to learn it.


* February 11, 2019, 02:35:43 PM
#2
My 1st post was poorly described. What I want to do is wrap and object like the Pro Platinum.png around a hemisphere of approx 100mm diameter and use this as a starting point to learn the techniques required. With so much written in Henrys Photorealism pdf on page 29 Spherical wrapping it should be simple, but like all things its sometimes the small details that I can get bogged down on.

I presume that a image file would need to be the same size both length and width to create a clean spherical wrap?

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Daz
TCW V21, 2016-2019 PP, Animation Lab V5 & LightWorks rendering mostly.


* February 11, 2019, 03:11:17 PM
#3
Daz, I really don't think Spherical wrapping is the best mode for this case. There is no way to map a plane image onto a spherical surface without distortion. The attached image shows your image Arbitrary Plane wrapped onto a hemisphere, and I kinda think this is the best approach here. In the Wrapping dialog, set Scale=100; Aspect Ratio=1; Origin=-50,-50,0; Normal Vector=0,0,1; Up=0,1,0.

(Spherical wrapping lets you -- for example -- wrap a Mercator map of the world onto a sphere and thereby create a model of a World globe. But note that a Mercator map is horribly distorted near the polar regions and the distortion caused by Spherical wrapping "undistorts" the original image.)

Henry H
« Last Edit: February 11, 2019, 03:13:58 PM by Henry Hubich »

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* February 11, 2019, 04:57:35 PM
#4
Thanks Henry for your feedback on this topic. Ok so I will give this a go and see what I come up with, fwiw I dont want any help with the actual source files of how you get the results, just the techniques to get the results.

Please see this post as to what Im generally trying to achieve: http://forums.turbocad.com/index.php/topic,23952.0.html

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Daz
TCW V21, 2016-2019 PP, Animation Lab V5 & LightWorks rendering mostly.


* February 11, 2019, 07:33:33 PM
#5
Think I may have got something wrong with the wrapping procedure, I selected wrapped filtered image as the source type but got nothing when viewed in quality raytrace. So I epacked all files.

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Daz
TCW V21, 2016-2019 PP, Animation Lab V5 & LightWorks rendering mostly.


* February 11, 2019, 07:37:16 PM
#6
Should have mentioned that I was going to attach the 3 tc2017 logos to the corresponding 3 hemispheres. Once Ive got this right then I can test in anilab.

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Daz
TCW V21, 2016-2019 PP, Animation Lab V5 & LightWorks rendering mostly.


* February 11, 2019, 08:11:44 PM
#7
In the "Wrapped filtered image" dialog, set Scale=1.0. In the Reflectance dialog, pick almost anything other than "Base" (Try "Matte," with both parameters=1.0).

Henry H

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* February 11, 2019, 08:17:38 PM
#8
Made an error in the previous epack where I did not use the UV mapping tools to map the image to the hemisphere. See the screengrab result and the settings.

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Daz
TCW V21, 2016-2019 PP, Animation Lab V5 & LightWorks rendering mostly.


* February 11, 2019, 08:31:37 PM
#9
Am now aware that the image that Im using is way too small. Will try to find an image thats better suited for the 100mm hemisphere.

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Daz
TCW V21, 2016-2019 PP, Animation Lab V5 & LightWorks rendering mostly.


* February 11, 2019, 08:42:11 PM
#10
Am now aware that the image that Im using is way too small. Will try to find an image thats better suited for the 100mm hemisphere.

Try these 1800×1800 TC logos.

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John R.

V17—V21, 2015—2019
Designer, Deluxe, (Professional, Expert, Basic), Platinum
RedSDK enabled
Windows 10 Pro (1803), 64-bit


* February 11, 2019, 11:41:11 PM
#11
Thanks John, getting close now. Just gotta work out if Ive used the wrong orientation when using the UV tools or whether there some change that needs to take place in the materials?

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Daz
TCW V21, 2016-2019 PP, Animation Lab V5 & LightWorks rendering mostly.


* February 12, 2019, 12:00:32 AM
#12
Has anyone got similar size images for Animationlab & Lightworks?

Thanks in advance .

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Daz
TCW V21, 2016-2019 PP, Animation Lab V5 & LightWorks rendering mostly.


* February 12, 2019, 01:38:26 AM
#13
Almost spot on target for what I was after, thanks Henry cos the info on Photorealism page 29 helped me solve the issue with the aspect ratio of the Deluxe image when compared to the others. Having an aspect ratio in the Wrapped Image & Arbitrary Plane got me confused but after editing and inspecting I finally got to a reasonable result by setting the Wrapped Image aspect ratio to 93% and the Arbitrary Plane aspect ration to 1. The feathered edges is acceptable for me and the hemisphere looks very good in the Quality Raytrace Lightworks render. Just need to find another 2 images for anilab and lightworks albeit in 2018 flavour.


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Daz
TCW V21, 2016-2019 PP, Animation Lab V5 & LightWorks rendering mostly.


* February 12, 2019, 09:11:57 PM
#14
So now that Ive got a good basis for wrapped images for animation, my next goal is to add a material to all the sailors and officers bunks and bed accessories etc. The material png file size is 135mm x 135mm and Ive called it new oak, not getting any good results well the edges look somewhat ok but the face panel is way off and just wondering why?

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Daz
TCW V21, 2016-2019 PP, Animation Lab V5 & LightWorks rendering mostly.


* February 12, 2019, 11:47:54 PM
#15
In Pattern shader, try change from 135 to 1 and use UV shader to scale it to your like

Torfinn

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* February 13, 2019, 02:32:32 PM
#16
So now that Ive got a good basis for wrapped images for animation, my next goal is to add a material to all the sailors and officers bunks and bed accessories etc. The material png file size is 135mm x 135mm and Ive called it new oak, not getting any good results well the edges look somewhat ok but the face panel is way off and just wondering why?

Unless you're going through the painful process of UV Mapping, there is no need to insert the material image into your drawing.

As Torfinn says, it's usually best to leave the Scale alone in the "Pattern" dialog and use the Wrapping dialog to control Scale (and Aspect Ratio and whatever else your chosen Wrapping mode offers).

Henry H
« Last Edit: February 13, 2019, 02:34:24 PM by Henry Hubich »

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* February 13, 2019, 03:59:05 PM
#17
Thanks Torfinn and Henry for your tips.

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Daz
TCW V21, 2016-2019 PP, Animation Lab V5 & LightWorks rendering mostly.