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Starting Corona Interactive Rendering in a Floating Window

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To start the Interactive Rendering in a floating window, Go go to the "Corona" menu at the top of the Cinema 4D Interface, interface and click "Interactive Rendering":


Corona Interactive Rendering in a floating (undocked) window.

Starting Corona Interactive Rendering in the Active Viewport

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To start the Interactive Rendering in the active (docked) viewport, Go go to the "Corona" menu at the top of the Cinema 4D Interface , and click "Interactive viewport":

 

Corona Interactive Rendering docked in the viewport.

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UI Path: ||Render Settings window|| > General Settings > Render Selected (Pixel Mask)

If you need to change only one or a limited number of objects in the scene, you can save some render time by using the Render Selected (Pixel Mask) option. You can choose to either render only the objects selected in the viewport, or you can create an include/exclude list.

The selected objects render, and have correct shadows, GI, and reflections from other objects in the scene, which means they can be placed into or over a previous render and look as if they had been part of the initial full render.

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Any objects that were greatly influenced by GI bounces from the objects you want to re-render, or that showed those objects in refraction or reflection, also need to be included in the render selection so that they update as well.

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Corona offers drawing and rendering of regions in the Virtual Frame Buffer.

Select the "Region" mode and draw a region wherever you want. Use Click Click and Drag to Drag to add new regions. Ctrl + Drag on the region border enables ''Fuzzy" region mode, in which the regions are seamlessly blended into the rest of the image.

By clicking and holding your mouse over the Region button you can also toggle all regions on and off, and remove all existing regions.

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Setting the DOF Focus Point from the VFB

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To set the Depth of Field focus point from the Virtual Frame Buffer - to a specific point on any surface: enable the Pick mode in the VFB. Then , then right-click on an object anywhere in your rendering and select “Set camera focus objectvalue”. This snaps the current camera’s camera focus point exactly to the selected object centerpoint on the surface.
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To set the Depth of Field focus point from Active (docked) Viewport - start Interactive Rendering in Active Viewport. Then select the object Picker from the Camera Focus Object. Then left-click on an object in your rendering to set the object to focusthe Virtual Frame Buffer to an object center: enable the Pick mode in the VFB, then right-click on any object in your rendering and select “Set camera focus object. This snaps the current camera’s camera focus point exactly to the selected object center.
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Setting the DOF Focus Point from an Active Viewport

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 Select Camera Focus Value - This option allows you to manually set a numeric value for the focus distance from the camera. This might be helpful when you need precise control over the focus distance or when working with a scene that requires specific depth-of-field settingsTo set the Depth of Field focus point from the Active (docked) Viewport to a specific point on any surface: start Interactive Rendering in the Active Viewport, then click on the picker next to the Camera Focus Distance, and then left-click anywhere in your rendering. This snaps the current camera focus point exactly to the selected point on the surface.

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 Select Camera Focus Object - This option allows you to choose a specific object in the scene to be the focus point. This option is useful when you want to easily define the focus point by directly clicking on the object in the scene, whether in the Virtual Frame Buffer (VFB) or Active Viewport. This automatically sets the camera's focus point exactly on the selected object center, making it the focal point of your renderTo set the Depth of Field focus point from the Active (docked) Viewport to an object center: start Interactive Rendering in the Active Viewport, then click on the picker next to the Camera Focus Object, and then left-click on an object in your rendering. This snaps the current camera focus point exactly to the selected object center.

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