geometry_kit_3d 0.1.0

Immutable 3D solids for Dart — volume, surface area, ray picking, cross-sections, extrusion and revolution of geometry_kit 2D shapes, meshes with OBJ/STL export.

0.1.0

Initial release.

Math

• Point3, Quaternion, Ray3, Segment3, Plane, PlaneFrame, Aabb.
• Transform3: position, rotation and uniform scale, with apply, inverse, composition and applyTo(Solid).
• Quaternion.toAxisAngle(); Ray3.closestPointOnLine for axis dragging.

Solids

• Solid interface: volume, surfaceArea, bounds, contains, closestPoint, distanceTo, intersectRay, transforms, toMesh.
• Sphere, Box (oriented by a Quaternion), Cylinder, Cone.
• RevolvedSolid base: exact ray, containment and closest-point queries from a 2D profile.
• Sphere.intersects (exact against every solid), Box.intersectsBox (separating axis test), nearestHit for picking.

Bridges from 2D

• Prism.extrude(Polygon, height:) — concave plans supported.
• SolidOfRevolution(List<Point>) — lathe a profile such as a sampled Spline.
• Cone.slice / Sphere.slice → sealed CrossSection (CircleSection, EllipseSection, ParabolaSection, HyperbolaSection, EmptySection) with geometry_kit Circle / Ellipse / Polygon results.

Meshes and camera

• Mesh with volume, surface area, merge, transforms, packed GPU buffers, toObj() and toStl(); MeshBuilder.
• OrbitCamera with project and rayThrough for screen ↔ world; view() returns a CameraView that computes the camera axes once for bulk projection; zoom / withDistance clamp to minDistance…maxDistance.