c3d-api-plugin

Corridors, baselines, regions, assemblies, subassemblies, corridor surfaces

Custom subassembly .NET design — CorridorState, SubassemblyGenerator, targets, SATemplate

Stock-subassembly pattern catalog — need→file index, worked DrawImplement recipes, point/link/shape code reference, mined from Autodesk's 120 VB stock subassemblies

Superelevation design, attainment, cross slope, pivot points, lane config

Block definitions, references, attributes, dynamic block properties, exploding

Dimensions — aligned, rotated, arc, radial, angular, ordinate, text overrides

Dynamic text fields — field codes, evaluation, embedding in MText/attributes

Points, vectors, matrices, curves, planes — transforms, intersections, recipes

Hatch patterns, gradient fills, boundary loops, associativity, hatch styles

Raster images, PDF/DWF/DGN underlays, OLE objects, wipeouts, image clipping

Layer table, layer records, properties, states, filters, color/linetype assignment

Paper space layouts, viewport creation, properties, layer overrides, plot settings

Linetype and text style creation, loading from .lin files, TrueType/SHX fonts

Multileaders — leader lines, MText/Block content, dogleg/landing, MLeaderStyle

MText and DBText — creation, formatting codes, columns, fragment parsing

PaletteSet dockable palettes, Ribbon API (tabs, panels, buttons), IExtensionApplication

PaletteSet hosting, WPF AddVisual, events, persistence, Tool Palette API, Properties Palette COM

Polyline, Polyline2d, Polyline3d — vertices, bulges, area, type conversion

Regions, 3D solids — boolean ops, extrusion, sweep, loft, mass properties, Brep

Tables — cell content, formatting, row/column ops, merging, styles, data linking

XData, XRecord, extension dictionaries, Named Object Dictionary, ResultBuffer

External references — attach, overlay, bind, path management, XrefGraph

Quick reference for AutoCAD .NET API classes - 1,248 types across 28 namespaces

Catchment areas, flow paths, watershed, drainage analysis, labels

Quick reference for Civil 3D .NET API classes - instant class lookups

Data shortcut references, cross-drawing objects, broken reference repair

Grading groups, criteria, feature line grading, daylight, volume calculation

Intersection objects, curb returns, corridor geometry, approach roads, labels

Sites, parcels, topology, subdivision, segments, labels, renumbering

Pressure pipes, fittings, appurtenances, parts lists, design checks, labels

QTO criteria, pay items, material computation, earthwork volumes, reports

Database cloning, DeepClone, WblockClone, IdMapping, side databases, Purge, Audit

Editor prompts — point, entity, selection, string, keyword, TypedValue filters

Database/document/editor events, ObjectOverrule, DrawableOverrule, TransformOverrule

EntityJig, DrawJig — interactive placement, live preview, Sampler, WorldDraw

PlotEngine, batch publishing with DSD, page setups, plot to PDF/DWF/PLT

Sheet Set (.dst) COM API — sheets, subsets, custom properties, lock management

Alignments — creation, entities, stations, design speeds, superelevation

FeatureLine and CorridorFeatureLine — creation, elevation editing, grading, export

Label style components, property fields, style hierarchy, text/line/block/tick elements