DISPLACEMENT TOOL. RELIEF AND TEXTURE.
Displacement is a tool that helps you create displacement of polygons and points on a mesh, i.e. the topography of an object, without having to work directly with its geometry.
Displacement is useful where a lot of time is lost in manual modelling because of the complexity of the mesh. With Displacement, you can create complex floor textures, decorative elements, as well as exterior models: mountain relief, tyre treads, etc.
This tool allows you to displace the surface based on a texture map, without changing the geometry of the model itself.
You need a good quality image for the Bitmap to work correctly. For example try to dicplace this image.
Let's see how to use Displacement in Corona renderer.
Open Render Setup (F10), Common, Displacement should be checked.
Then Render Setup - Performance - Displacement. Here you will find the main setting of quality. By default, this is 2. This is usually enough, but you may try setting 1.5 or 1.
The result may not be visible in the 3D Max window, you need to run the interactive renderer.
Next open Material editor (M). Take material of our object or assign suitable (CoronaMtl or in newer versions of 3D Max - CoronaPhysycalMtl, CoronaLegasyMtl). Then CoronaBitmap with our texture connect to the Displace slot or Displacement in other versions.
The Min Level and Max Level parameters are responsible for how much the surface is squeezed out. For gypsum moulding it is 1-2cm, for wallpaper 0.2-0.3cm.
In the case of wallpaper, the same Bitmap is connected to two slots - Base Color (Diffuse Color) and Displacement.
A denser mesh of polygons will help improve the final image. But not too many in this case, not a million. There are 10x10 polygons here.
If the image does not overlay correctly on the surface, or if a smaller or larger scale is needed, you can use modifiers that work with UVW (UVW Map, Unwrap UVW).
The type of Gizmo and its location in the scene determine the final effect. Displace gizmos: Planar, Cylindrical, Spherical, and Shrink Wrap. You can Scale, Rotate, and Move the gizmo to concentrate the effect.
Length, Width, Height - Specifies the dimensions of the gizmo's bounding box. Height has no effect on Planar mapping.
U/V/W Tile - Sets the number of times the bitmap repeats along the specified dimension. The default value of 1.0 maps the bitmap exactly once; a value of 2.0 maps the bitmap twice, and so on.
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