Explosia FX: Display

This page contains the reference manual for the Display tab in the Explosia FX object. The tab controls which channels you see in the editor. It has no effect on what is rendered.


The tab interface looks like this:



This drop-down menu controls which channels are shown in the editor. Each option apart from 'Color' has a colour gradient and an opacity gradient associated with it for the display. The options are:


The voxel temperatures are shown.


Displays the smoke channel.


Displays the fuel channel.

Fuel and Smoke

Both fuel and smoke are shown. This is the default setting. Note that with this option the gradients for both fuel and smoke are available (so four gradients rather than two are shown).


In this mode, the actual flow vectors in the voxels are shown. The same gradients are also used for the Speed channel. Note that you can alter the vector display by using the 'Voxel LOD' slider, which is only available for this channel.


The speed channel is shown. It uses the same gradients as the 'Velocity' channel.


No gradients are available for this channel. To use it, first check 'Color' in the solver settings (Solver tab). Then the colour which is used is determined by the Explosia FX Source tag.


This is the display mode menu. The options are:


The display is turned off and nothing will be seen if the simulation is run.


The default setting. The display is composed of a number of slices, and the detail can be adjusted by altering the 'Slices' parameter. The more slices, the more detailed the result, but it will be slower to run.


In this each voxel is coloured as required, giving rise to a grid of discrete dots rather than a continuous display. This mode is faster than 'Slices' but much less detailed. You can control the level of detail with the 'Voxel LOD' slider.

Centre Slice

One single slice is used from the centre of the source object. A very fast mode but without much detail.


This menu controls how the solver object is displayed. It has these options:


Only the adaptive bounds of the solver are displayed.


Only the bounding box of the solver and the adaptive bounds are shown.


Each voxel is displayed as a small cube.


A grid showing the voxel size is drawn on the furthest wall of the solver from the camera.


A grid showing the voxel size is drawn on the base of the solver.

Show Bounds

Regardless of the selected option in 'Grid'. if this switch is unchecked the adaptive bounds are not drawn.


Use this slider to change the transparency of the solver box and grid.


The number of slices to use if 'Mode' is set to 'Slices'.


The resolution of the display. The higher it is, the more detailed the display, but the slower it is to be drawn. If you increase this too much, it will slow the simulation down significantly.

Voxel LOD

The level of detail of the voxel display. Only available if 'Display' is set to 'Velocity' or 'Mode' is set to 'Grid'.

Color and Opacity Gradients

There are separate pairs of gradients for each parameter option in 'Display', apart from 'Velocity' and 'Speed' which share the same gradients, and 'Color', which doesn't have any.