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Displaced icosphere rock with fractured facets

In your harnessBlender toolMIT

Generate a closed rock mesh from a seed: an icosphere displaced by fractal value noise, sheared by random planes into flat facets and flattened at the base. Use it for props, scatter sources and level dressing.

Render of Displaced icosphere rock with fractured facets
The render its check recorded in Blender 5.2.1, 192 by 192 pixels.

What it takes and gives

Operator
baltor.rock_displaced
Parameters
seed, subdivisions, radius, dimensions, roughness, frequency, octaves, cuts and 3 more
Result
One closed mesh object named Rock with a UVMap and one material slot.
Blender
4.2 or later
Axes
Blender Z up, -Y forward
Units
metres

Limits. Displacement is radial, so overhangs and deep cracks cannot form. The noise is value noise on an integer lattice, which shows mild grid alignment at low octave counts. Strong cuts or a high flat base can produce long thin triangles. One material slot with a flat colour; no texture or weathering. Verified in Blender 5.2.1; written for the 4.2 API.

Details

Kind
Blender tool
Engine
Blender 4.2 or later
Files
11 files, 109.3 KB
Licence
MIT
Declared effects
runs commands
Checked with
Blender 5.2.1, background (Cycles CPU for previews)
Checks
addon install and enable, operator runs with defaults, blender data matches core, addon disable unregisters, script mode runs, clean reopen addon file, clean reopen script file, gltf separate export, engine output clean
Techniques
Icosphere by recursive four-way triangle subdivision projected to the sphere, Value noise with quintic fade and integer hash lattice, fractal sum of octaves, Planar cuts by projecting points beyond a half-space onto its plane, Spherical UV mapping with seam correction per face
Tags
blender, procedural, rock, noise, icosphere, mesh generator, environment
Identity
library.supply.creative_originals.e505b803a9af344d1abb02fe.0d9a60db375b5336
Version
0d9a60db375b5336ebe66b3f43c103abf34db6c45aac5e1d1e59732f88bbe7fb

The version is the SHA-256 of the item your harness downloads; every file in it names its own checksum.

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