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RobertL

Texture flat proj. based on a object

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Is it possible to have the texture projection on an object based on another one. For example instead of adjust the texture size of a flat projection per object, I want to define one square and then use it on multiple Objects. Like texture gizmo, or projection in other applications. 

I'm not sure how this would work. At best I would simple create a null with rectangle size and use it to project a texture in one shader too all objects its applied.

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Have you tried camera mapping? If you use that as your projection method you can control where the textures are projected by moving the camera and control the size of your texture via the zoom. To avoid the camera distance dependant scaling (caused by the frustum) set the camera's projection to parallel. Hope that is what you are looking for.

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20 hours ago, RobertL said:

I'm not sure how this would work.

It wouldn't in Cinema, which just can't do it ! :/ 'Another Object' is an option we have been missing in the Standard Projections for some time, and eagerly await a fix for it...

 

I was also going to suggest camera mapping as a possible alternative tho, but appreciate that might not be ideal for your particular circumstances here...

 

CBR

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  • Yeah it looks like this is the cold revenge of the mapping per shader nonsense. It did hold me back on C4D the last 9 years. I really hope to reach the developer to tell them to drop there, layer some shaders workflow. Some other C4D users pointed out: thats where RizemUV is for. And yes thats indeed the only good solution. You need UVs. Because then I'm also able to use the same UV channel across object using the identical shader.

     

    So in order to get that: First create a box with size of the projection. Then select all objects, incl. the proportion box. And then choose UV projection, name for the UV and option all selection objects. To be fair that workflow I often used in the past in different software package, to avoid any offsets through moved objects (world coordinates agains locals, can be tricky to handle).

     

    At least it's possible, that the most important thing right now. But I would love to have projection gizmos for extra textures. 

    PS: Yes camera projection exists too. Its doing a good job, but its not really the correct thing here. First off, how to deal with multiple textures? (Just had to place 20 on one object!!!) Second you have no control of the true size of texture. So if its 1m x 1,22 m its get trick to handle, etc. 

     

    Lets hope R21 finally comes with a rework of UV tools...

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