It will also introduce you to the FumeFx UI. This scene is nothing more than simple candle geometry. From within the Top viewport, draw out a FumeFX Grid as shown below to roughly match the size of the simulation area at the top of the candle. Then in any viewport, move the FumeFX Grid gizmo into position at the top of the candle geometry. Note: Make the FumeFX grid only as large as the simulation area you need.
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Welcome to FumeFX, a groundbreaking solution for incredibly realistic and breathtaking effects with fire, smoke and explosions. Designed for use by visual effects artists, game developers, and visualization professionals who demand the utmost in realism, FumeFX is unrivalled in its ability to capture the nuance and complexity of fluid gas behavior.
The key to the FumeFX difference is that it combines your specific aesthetic vision with real-world physics. FumeFX fire and smoke behave according to the laws of fluid dynamics and react to relevant physical forces, such as temperature and gravity. This means you can produce realistic voxel-based simulations with greater speed and ease than ever before.
Furthermore, the combination of a dynamic feature set, intuitive user interface, and open architecture offer the performance and flexibility to enhance virtually any pipeline.
Simply put, there is no other combustion effects tool that can compete with physics simulation power in this plug-in. The reason that FumeFX can accurately simulate the behavior of fire and smoke is because it is based on the laws of fluid dynamics. This means that you can now mimic real combustion without studying physics. To begin, fluid gases, such as fire and smoke, do not have a set size or shape.
So, in physics, a fluid is generally regarded as a continuum, rather than as a bunch of individual molecules. FumeFX approaches fluid from the same viewpoint; it operates on an adaptive 3D grid of voxels volumetric pixels , which mimics a continuum of fluid. This grid expands and shrinks with the movement or absence of fluid.
Also, in the real world combustion is a combination of fuel, temperature, smoke, and velocity; accordingly these are the same properties that affect your simulation in FumeFX. Their values are defined in each voxel of the FumeFX grid. And, of course, external forces, such as gravity or solid objects, can also be used to influence your effects. These combined parameters will determine how your simulation behaves. So, for example, smoke is affected by gravity and temperature is affected by buoyancy.
The higher the temperature of the smoke, the faster it will rise, depending on buoyancy parameter. And, the denser the smoke is, the faster it will fall, depending on the force of gravity. Of course, physics aside, FumeFX also includes a wide array of options that allow you control the rendered appearance of your simulation. These include parameters such as colors, opacity, and shadows, all of which allow you to tailor your effect to your aesthetic needs. It consists of an area of voxels that will be affected by simulation.
By choosing the size of this grid, you set the maximum limits for the simulation area. Within the boundaries of this space, an adaptive grid expands and shrinks to contain just those voxels that are producing fluid. Grid detail level is set with grid spacing. If you cut the spacing in half, you will increase detail, but also dramatically increase the size, memory, and time required for simulation.
You add this grid into your scene from the main Command Panel in 3ds Max. To do this, first choose the Create Geometry icon; then, select FumeFX from the drop down menu of categories. Now you can click and drag in the active viewport to create the grid or create a default grid straight from the FumeFX toolbar.