Class PrimitivesFactory

PrimitivesFactory manages a per-context lazy-loaded cache of standard geometric shapes. Promotes high-performance vertex/index buffer resource sharing and avoids redundant GPU allocations.

Index

Constructors

constructor

Methods

destroy getArrow getCone getCube getPlane getSphere

Constructors

constructor

new PrimitivesFactory(): PrimitivesFactory
Returns PrimitivesFactory

Methods

destroy

destroy(ctx: Context): void
Releases all cached primitive geometries from GPU memory and unregisters them from the VRAM tracker.
Parameters
- ctx: Context
  Active context.
Returns void
- Defined in graphics/primitives-factory.ts:117

getArrow

getArrow(ctx: Context, radialSegments?: number): Geometry
Returns the shared arrow geometry, instantiating it on the very first call.
Parameters
- ctx: Context
  Active context.
- radialSegments: number = 8
  Subdivision segments. Defaults to 8.
Returns Geometry
The cached or newly allocated Arrow Geometry.
- Defined in graphics/primitives-factory.ts:105

getCone

getCone(ctx: Context, radialSegments?: number): Geometry
Returns the shared cone geometry, instantiating it on the very first call.
Parameters
- ctx: Context
  Active context.
- radialSegments: number = 16
  Subdivision segments around base. Defaults to 16.
Returns Geometry
The cached or newly allocated Cone Geometry.
- Defined in graphics/primitives-factory.ts:91

getCube

getCube(ctx: Context, size?: number): Geometry
Returns the shared unit cube geometry, instantiating it on the very first call.
Parameters
- ctx: Context
  Active context.
- size: number = 1.0
  Sizing dimension. Only applied if the cube is first instantiated here. Defaults to 1.0.
Returns Geometry
The cached or newly allocated Cube Geometry.
- Defined in graphics/primitives-factory.ts:36

getPlane

getPlane(ctx: Context, width?: number, height?: number): Geometry
Returns the shared unit plane geometry, instantiating it on the very first call.
Parameters
- ctx: Context
  Active context.
- width: number = 1.0
  Span width along the X axis. Defaults to 1.0.
- height: number = 1.0
  Span depth along the Z axis. Defaults to 1.0.
Returns Geometry
The cached or newly allocated Plane Geometry.
- Defined in graphics/primitives-factory.ts:51

getSphere

getSphere(
    ctx: Context,
    radius?: number,
    widthSegments?: number,
    heightSegments?: number,
): Geometry
Returns the shared sphere geometry, instantiating it on the very first call.
Parameters
- ctx: Context
  Active context.
- radius: number = 1.0
  Radial size of the sphere. Defaults to 1.0.
- widthSegments: number = 16
  Horizontal subdivision segments. Defaults to 16.
- heightSegments: number = 16
  Vertical subdivision segments. Defaults to 16.
Returns Geometry
The cached or newly allocated Sphere Geometry.
- Defined in graphics/primitives-factory.ts:67

Class PrimitivesFactory

Index

Constructors

Methods

Constructors

constructor

Returns PrimitivesFactory

Methods

destroy

Parameters

Returns void

getArrow

Parameters

Returns Geometry

getCone

Parameters

Returns Geometry

getCube

Parameters

Returns Geometry

getPlane

Parameters

Returns Geometry

getSphere

Parameters

Returns Geometry

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