bherbruck
d71bdb78ec
Preserve linked sketch identities through deterministic face projection and resizing. Fix origin-corner picking, persistent inline navigation, appearance editing, configuration styles, component properties, contact sweeps, sheet exports, analytic STEP offsets, and bounded rolling-ball fit accuracy. Validated with full cargo xtask ci, native workflow screenshots, repeated enclosure replays, and analytic geometry regressions.
26 lines
1.6 KiB
Markdown
26 lines
1.6 KiB
Markdown
# Parameters and expressions
|
|
|
|
Every dimension and feature input is a **model parameter** (`d1`, `d2`, …). **User parameters**
|
|
are ones you add yourself, with a unit, an expression and an optional comment. Change them in
|
|
**Change Parameters** (`parameters.change`). The timeline rebuilds from the first feature that
|
|
uses them.
|
|
|
|
Expressions are unit-aware: `2 * width + 5 mm`, `angle / 2`, `sqrt(area)`, `1 in + 3 mm`, using
|
|
`+ - * / ^`, parentheses, `sin cos tan asin acos atan atan2 sqrt abs min max floor ceil round mod
|
|
trunc` and unit conversion. A length where an angle is expected (or the other way round) is an
|
|
error, not a silent conversion. Cycles are reported with their path (`a → b → a`), renaming a
|
|
parameter updates every expression, dimension and feature input that uses it, and a parameter
|
|
in use can't be deleted (the error lists its users).
|
|
|
|
The design's units (Document Settings in the browser: mm, cm, m, in or ft) set how a bare number
|
|
typed into a feature is read. In an inch design `2` means 2 in. Changing the units never moves
|
|
existing geometry.
|
|
|
|
Parameters export to and import from CSV or JSON (`parameters.export`, `parameters.import`).
|
|
**Configurations** (`config.*`) keep a table of rows, each with its own parameter values and
|
|
suppressed features, physical materials and body appearances, switched with `config.activate`.
|
|
The table's Library picker selects material or appearance values. Choose **Follow material**
|
|
to clear an appearance override. Custom looks retain their colour and opacity across
|
|
activation, undo and save/reopen. See
|
|
[configuration commands and examples](https://github.com/bherbruck/solvecraft/blob/main/docs/configurations.md).
|