P3 constructs a Point3. Example: origin := P3(0, 0, 0).

P2 constructs a Point2. Example: origin := P2(0, 0).

V3 constructs a Vector3. Example: d := V3(0, 0, 1) // +Z direction.

Abs returns |a|; its derivative is sign(a) (and zero at a==0, the kink). The tangent constraint and tangent-distance dimension take an absolute distan

call invokes a method and unmarshals the JSON result into v (nil to ignore).

Error implements error.

Add appends a selectable if the filter accepts its kind and it is not already in the set, reporting whether the set changed. De-duplication honours th

AsVector reinterprets the position as a displacement from the origin.

Add creates a planar sketch on plane and adds it to the collection, giving it the next free auto-name (Sketch1, Sketch2, …) like the reference API.

Scale multiplies every component by the constant c.

VectorTo returns the displacement from this point to o (o - this).

Points returns the path's ordered vertices in sketch space, honoring each segment's traversal direction. A sweep maps these through the path's sketch

XYPlane, XZPlane and YZPlane are the three origin-based standard planes, matching the work-planes a new part document provides.

Add wraps imported mesh geometry as a feature.

PointAt returns the position at parameter t.

DefaultQuality returns a reasonable display tolerance. The angle bound is a max chord-to-chord deflection; with recursive bisection it gives a full ci

Tok is a terse LineageToken constructor.

NewSession creates an empty in-memory session with no persistence store. Its documents live only in memory — Save/Open return "no store configured" —

NewLineage builds a lineage from ordered tokens (root first).

Dot returns a·b.

DistanceTo returns the Euclidean distance between this point and o.

StartTool activates an interactive tool, cancelling any tool already running.

NewPartFeatures creates an empty feature program. params drives expressions and conditional suppression; keys resolves topology input refs (either may

Features returns the part's feature program (the recompute engine).

TranslateBy returns this point displaced by v.

BodyGeometryProperties computes the volume, area, and centroid of a body from its tessellation at quality q. Volume and centroid use the divergence-th

Definition returns the lip recipe.

NewSketches returns an empty collection.

Name is the tool's display name.

Lines/Arcs/Circles/Ellipses/Splines/Points/Blocks return the typed entity factories (the Lines etc. collections).

IsEqualTo reports whether this point and o coincide within tol. Pass tol <= 0 to use [DefaultTolerance].

readOnly registers a query handler: not a [MutatingMethod], so the router neither records an undo step nor replicates it. This is the default registra

Validate checks a body's topology: every edge of a manifold solid must be used by exactly two faces with opposite orientation, a solid must be closed

Result returns the body state after evaluating up to the end-of-part marker.

Lines returns a copy of the current output lines, oldest first.

Sheets returns the drawing's sheets.

Geometry returns the edge's underlying transient curve (a Circle/Arc3d/Line…).

Content returns the modeling payload, or nil if this is an unopened reference stub. Callers needing a typed view use the specialization accessors (e.g

Recompute replays the dirty tail: it finds the earliest dirty feature, reuses the cached body state before it, and evaluates forward to the end-of-par

Workspace/Commands/Events/Selection expose the session's subsystems.

Click is a left-button click at a viewport coordinate (the common case). It picks the front-most selectable honoring the active filter: while a tool i

Add returns a+b componentwise.

SolidCylinder builds a closed analytic cylinder B-rep (K1b): one true cylindrical side face (not faceted) plus two planar circular caps, sharing two c

IsSolid reports whether the body is a solid (vs a surface body).

AddByTwoPoints creates a line between two new endpoints at the given positions.

NewPlane builds a plane through origin with the given normal, choosing an arbitrary in-plane U/V basis. Errors on a zero normal.

Identity4 returns the identity transform.

mutating registers a document-editing handler as a [MutatingMethod] under the one pattern every such method follows: the router records a single undo

Fwd and Rev are terse Use constructors.

seededSession builds a router and a session with an active part that has a "width" parameter and one sketch holding a closed 4x3 rectangle profile — t

emptyPartSession returns a session whose active document is an empty part, with a camera framing the XY plane straight on so sketch-plane clicks map p

AddEdge adds an edge with the given curve and bounding vertices, recording the edge on each vertex's incidence list.

AddVertex adds a vertex at p with the given lineage.

Length returns the arc length |Radius · SweepAngle|.

ActiveTool returns the running tool instance, or nil.

emptyPartSession returns a router and a session with one active, empty part.

NewCommand starts a command definition with the required fields. Use the With* methods to set the alias, kind, enable predicate and tooltip.

NewPartComponentDefinition returns an empty part content object with its feature engine wired to the part's parameters.

Dot returns the dot product v·o.

Cross returns the 2D scalar cross product aₓbᵧ − aᵧbₓ (the signed parallelogram area), zero iff a and b are parallel.

typed adapts a context-free handler (decode Args, run, marshal Result) to the router's raw handlerFunc. Use it for methods that read no active model c

Sin and Cos are the trigonometric primitives (used by 3D angle relations).

NewLineSegment builds a segment between two points.

EntityID returns the entity's sketch-local id.

Health returns the sketch's solve health (set by the solver, M06-F05).

Subscribe registers h for events of type E in phase p and returns a handle to cancel it. Subscribing the same type in both phases takes two calls.

Active returns the active sheet, or nil if the drawing has no sheets.

Add appends an assembly feature wrapping f, participating on the given occurrences (the default participation the assembly snapshots from the componen

Input routing — the methods a viewport (or a test) calls to drive the session. They implement Inventor's mouse/keyboard behavior at the logic level; t

activePart returns the active document's part component definition, or an error.

V2 constructs a Vector2. Example: right := V2(1, 0).

Boolean combines target and tool under op. The non-overlapping topological cases — disjoint bodies and one fully containing the other — produce valid

Execute runs the command with the given id, firing CommandStarted (Before) and CommandEnded (After) and refusing a disabled command.

Marshal renders the tree back to indented XML with a trailing newline, the shape Blender itself writes, so a saved theme diffs cleanly against its sou