Hello and welcome to another V-Ray feature short demonstration.
In this video we will demonstrate the V-ray Clipper feature, which performs render-time sections,
cut-outs and booleans.The V-Ray Clipper is a geometry type object
with a default shape of a plane. One of its sides has an arrow sticking out of it
which indicates the cutting direction.
What’s more, it fills the gaps in the geometry left from the cutting. As of V-Ray 3.3
the VRayClipper allows for using any solid,
non single-sided mesh. It is a shading effect, which means that it doesn’t
modify the scene geometry.
This makes it artifact and flicker free when animated. Let's take a closer look at the
VRayClipper.
This watermill has some objects inside.
Let’s use the VRayClipper to remove the roof and take a look at the interior.
It is created from the Geometry tab, V-Ray category.
By default, it is in planar mode. The section can be adjusted by positioning
and rotating the VRayClipper object.
Currently, all scene objects are affected. To exclude some, for example the ground and
the surroundings,
click on the Exclude list button. In this case there is a predefined selection set.
Now just the house is being cut.
The gaps are filled with the default color of the clipper. To change the color,
a new material can be applied on the VRayClipper itself.
However, the objects affected by the clipper have different materials. To
propagate them to the clipper’s filling, enable “Use object material”.
As of V-Ray 3.3 the clipper could be set to “Mesh mode” and use any solid mesh
instead of a plane.
This makes it suitable for render-time Boolean operations.
Let’s pick a custom made mesh.
The exterior light from the sun is going through the clipped geometry.
Most of the times that is desired. However, in this scene there is interior lighting
present.
To see only its effect and block any exterior lighting, disable the
“Affect lights” parameter.
Similarly, the “Camera rays only” uses the clipper only for the camera
rays and ignores it for all secondary rays such as shadows, reflections and GI.
Let’s load up a more complex scene, so we can see the updated VRayClipper
with Mesh mode in action.