CONSTRAINT / OBSTACLES
Obstacles and clearance
Reserved volumes are geometry: unions of exact boxes approximate a wheel arch, a post or a roof shelf, and placements route around them.
obstacles + additional_boxesWhy it exists
The usable space is rarely the container envelope. Modelling the exclusion zone is what makes the result loadable in the vehicle you actually have.
What a useful refusal looks like
The engine returns the rule that refused, the item it refused, and the measured value against the configured threshold. It also states how strongly that is backed: proven, observed, inferred, or unknown because a search limit was reached first.
See the fixtures for this rule ↗