MFA Thesis - Shot 5

Shot 5 - Reference

Shot 5 - Storyboard

Shot 5 - Destruction

Model Preparation for Destruction

• Prepare the model before destruction, making sure all geometry is finalized with no intersections.

• Details(Layers)

  • Window glass

  • Window frame - wood

  • Rebar - metal

  • Wall - concrete

  • Wire

  • Debris

  • Pyro / Fire

  • Particles

Fracture - voronoi & boolean

Boolean

more organic shape but not stable with complex geo

voronoi

the shape of fracture too uniform

Fracture - building a custom HDA for different layers of fractures

After preparing the proper model for destruction, I blasted the parts that I would not simulate to save rendering time. I then used a hard-edged group in the Remesh node to maintain the original building shape. After that, I created a subnet and used my custom HDA to create the fracture.

In the subnet, before feeding the geometry into the PointVOP, I set v@rest = v@P to preserve the original position of the points. In the PointVOP, I added noise to @P and then fed it into a Voronoi Fracture using points generated from a Scatter node. For the volume, after converting the polygon to VDB, I used a Volume VOP to add noise to the density, making the scattered points look more organic.

After creating the geometry, I used a For-Each loop to get the individual pieces and fed them into another Voronoi Fracture. I added a Switch node, which is connected to the parameter at the top level, allowing me to switch between the large piece and the fractured pieces from the For-Each loop. Afterward, I restored the original point positions by setting v@P = v@rest.

The reason I used an HDA is that I wanted to create multiple levels of fractures and control each level individually, as well as create interesting edges for the fractures. Since using the name attribute would cause overlaps, I created a new attribute after the Scatter node. This new attribute is then passed through the For-Each loop, where it gets used in each iteration. To make the setup more manageable, I added parameters at the top level, allowing me to control them easily.

There are a few places to connect to make the parameters work correctly:

• Connect the name attribute from the Create Attribute node to the fracture_name attribute at the top level. (last attribute to be run in for each)

• In the Voronoi Fracture, link the name attribute to the piece primitives instead of the points.

• For the For-Each End, the piece attribute should be set up to fracture_loop. (new attribute)

Be sure to promote all the attributes you will use and connect them to the parameters at the top level.

Finally, back at the SOP level, right-click the subnet and choose "Create Digital Asset" to complete the process.

scatter

create attribute

for each end

voronoi

fracture level 1

fracture level 2

fracture level 3

Shot 5 - Fire and Pyro

Shot 5 - ZibraVDB Experiment

Shot 5 - ML Pyro Upres Experiment

Shot 5 - Particles

Shot 5 - Look dev

Shot 5 - Optimizing and Rendering