Свойства

Grids

The Поле «список» shows the grids in the OpenVDB-file, listing their name and data type. A «grid» is a set of volumetric data, which typically stores the density of each voxel but can also contain temperatures, velocities and so on.

Click a grid to make the volume object display it.

OpenVDB File

File Path

The VDB file to use.

Секвенция

Loads further VDB files, one for each frame in an animation. Much like with image sequences, all the files should have a numerical suffix in their name; so if you selected smoke-000.vdb in the File Path, there should be a smoke-001.vdb, a smoke-002.vdb and so on.

Кадры (frames)

How many frames of the sequence to use.

Начало (start)

Scene frame at which the sequence should start.

Смещение (offset)

How many frames of the sequence to skip at the beginning.

Режим (Mode)

How the volume should behave before the sequence’s first frame (Start) and after its last (Start + Frames).

Clip:

Show nothing.

Extend (дополнение):

Keep showing the first/last frame of the sequence.

Повторить:

Play the sequence again (and again, and again…).

Ping-Pong:

Play the sequence forwards, then backwards, then forwards again and so on.

Отображение во вьюпорте (viewport display)

Wireframe

Method used to represent volumes in wireframe shading mode. For heavy volume data sets, it can be useful to set the object to always display as wireframe. This way, the 3D Viewport remains responsive but the volume still appears in the final render.

Нет (none):

The volume is not displayed in wireframe mode.

Bounds:

Displays the volume as a Bounding Box for the entire grid.

Boxes:

Displays bounding boxes for nodes in the volume tree.

Points:

Displays points for nodes in the volume tree.

Detail (детальность)

The amount of detail to display for Boxes or Points wireframe mode.

Coarse:

Display one box or point for each intermediate tree node.

Fine:

Display a box or point for each leaf node containing 8×8 voxels.

Плотность (density)

Thickness of the volume in the 3D Viewport. The density of the volume in the render is adjusted via Volume Shading.

Интерполяция (interpolation)

Метод интерполяции, используемый для визуализации сетки жидкости.

Линейно (linear):

Линейная интерполяция между вокселями. Обеспечивает хорошую скорость и плавность.

Кубический (cubic):

Кубическая интерполяция между вокселями. Даёт сглаженную интерполяцию высокого качества, но работает медленнее.

Ближайший (closest):

Никакой интерполяции между вокселями. Даёт необработанные воксели.

Разрезать (slice)

Рендер только одной 2D-секции объекта-домена.

Ось (axis)
Авто (auto):

Отрегулировать направление среза в соответствии с направлением вида.

X/Y/Z:

Slice along the X, Y, or Z axis.

Расположение

Положение среза относительно длины соответствующей стороны домена.

Рендер (render)

Пространство (Space)

Specifies how volume density and step size are computed.

Объект (object):

Keeps volume Density and Detail the same regardless of object scale.

World (мир):

Specify Step Size and Density in world space.

Step Size Cycles Only

Distance between volume samples. Lower values render more detail at the cost of performance. If set to zero, the step size is automatically determined based on voxel size.

Clipping Cycles Only

Value under which voxels are considered empty space to optimize rendering.

Precision Cycles Only

Specifies volume data precision. Lower values reduce memory consumption at the cost of detail.

Полностью (full):

Full float (Use 32 bit for all data).

Наполовину (half):

Half float (Use 16 bit for all data).

Variable:

Automatically use less precision for less noticeable areas.

Velocity Grid Cycles Only

The name of the grid that contains voxel velocities, for calculating motion blur. This can be the name of a single grid containing 3D vectors, or a prefix of three separate grids containing scalar values. In the latter case, the X grid should have a name suffix of x, .x or _x, with similar conventions for the Y and Z grids.

Velocity Unit Cycles Only

Whether the velocity grid(s) specify distances per frame or per second.

Velocity Scale Cycles Only

A custom multiplier to apply to the velocities in the VDB.