1. ARCHITECTURAL
PROCEDURAL
MODELING
MARKO KOLJANČIĆ
MAKSIM ŠESTIĆ
INOVA INFORMATIČKI INŽENJERING

2. PROCEDURAL MODELING
Procedural modeling is an umbrella term for a number of techniques in computer graphics
to create 3D models and textures from sets of rules. The output is called procedural
content, which can be used in architectural design, simulations, gaming, movie industry...
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3. MODELING TECHNIQUES
L-Systems, fractals, and generative modeling are procedural modeling techniques since
they apply algorithms for producing scenes. The set of rules may either be embedded into
the algorithm, configurable by parameters, or separated from the evaluation engine.
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4. DATA AMPLIFICATION
Procedural models often exhibit database amplification, meaning that large scenes can be
generated from a much smaller amount of rules. Seemingly simple algorithms may
produce very complex datasets.
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5. REPRODUCING THE OUTPUT
If the employed algorithm produces the same output every time, the output need not be
stored. Often, it suffices to start the algorithm with the same random seed to achieve this
(that is, if algorithm implements a level of randomness in it).
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6. BASED ON RULE SETS
Although all modeling techniques on a computer require algorithms to manage and store
data at some point, procedural modeling focuses on creating a model from a rule set,
rather than editing the model via user input.
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7. RANDOMNESS AND RECURSION
Procedural models often make use of some form of randomness. For example, if a
procedural model like a tree is built from by making use of several random numbers, then
the entire tree can be rebuilt by just resetting the seed to its initial value.
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8. BEATS MANUAL DESIGN
Procedural modeling is often applied when it would be too cumbersome to create a 3D
model using generic 3D modelers, or when more specialized tools are required. This is
often the case for plants, architecture or landscapes.
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9. SOFTWARE TOOLS
Using software modeling tools – such as Autodesk Maya and 3ds Max, Grasshopper for
Rhino, or Side Effects' Houdini – user can create simple geometric primitives and modify
them into architectural pieces using various transformations and geometric operations.
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10. A R C H I T E C T U R A L P R O C E D U R A L M O D E L I N G | I N O V A

11. REFERENCES:
- Autodesk Revit Architecture
- Autodesk Maya
- Autodesk Dynamo for Revit
- Autodesk 3ds Max
- Grasshopper for Rhino
- Side Effects Software Houdini