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Re: Several rendering engines in the same plugin
In render method, you could create a camera with a different name for each rendered frame using a name equal to UUID.randomUUID().toString(). For the background and the sun, I don't see any way in YafaRay to replace a light by another one, remove a light from the rendered scene or disable a light. You could ensure that they are created only once but this would forbid to simulate sun moves during the day. You could also compare sunDirection to its value during the previous call to render, and if it changed, delete the scene and environment with a call to finalize() and create again the environment and the scene like in YafarayRenderer constructor (this will slow down video creation process compared to SunFlow renderer, but changing time during a video is probably not a common use of the video creation tool).
Good luck!
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Emmanuel Puybaret, Sweet Home 3D developer
To be sure they are not created several times in order not to slow down the video rendering, I put the call to the YafarayRenderer constructor in the renderImageAt method of the PhotoImageGenerator class. I did the same for the call to the SunflowRenderer constructor and I adapted the management of the variable light sources.
These modifications allow to animate the camera and simulate the movements of the sun during the day regardless of the selected rendering engine.
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EnkoNyito
France
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Re: Several rendering engines in the same plugin
If by "calling the YafarayRenderer constructor", you mean programming new YafarayRenderer(...) for each frame of the video, I don’t understand how it couldn’t not slow down the creation of the video. This constructor creates many objects and calls many methods of the rendering engine to create the scene! Or maybe, you meant something else...
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Emmanuel Puybaret, Sweet Home 3D developer
Joined: May 28, 2015
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Re: Several rendering engines in the same plugin
As it is not possible to remove a light created during the first video frame in YafaRay, a single call to new YafarayRenderer has the consequence of adding new lights to the scene with each new frame which slows down the video rendering. Using finalize(), Sweet Home 3D crashes by generating a .log file in the plug-in project folder.
With several calls to new YafarayRenderer as for photos at points of view, a new scene is created with each video frame and the problem of removing lights does not arise. The surprise is that the video rendering is no longer slowed down and is even faster than SunFlow.
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EnkoNyito
France
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Re: Several rendering engines in the same plugin
Keep it that way if you want, at least it works. I'll study another way in the next version.
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Emmanuel Puybaret, Sweet Home 3D developer
France
Joined: Nov 7, 2005
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Re: Several rendering engines in the same plugin
Sorry Enkonyito, I should have better tested the changes I made for video generation in the version 1.1 of the YafaRay plug-in. The issues should be fixed in version 1.2 that I tested by rendering images more than once with a camera time and place change between frames. You'll see that I also added to YafaRay some methods able to remove lights, backgrounds, integrators and cameras, to prevent the need to restart YafaRay engine between two frames. Hope you can integrate these changes more easily in your plug-in.
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Emmanuel Puybaret, Sweet Home 3D developer
