Class ParticleIdProgram

The instanced id program for §36 particle systems — the billboard vertex PARTICLE_VERTEX_SHADER_SOURCE shares with ParticleProgram, and the id fragment's flat pickId. One colour for the whole emitter, never a per-particle id. Compiled lazily on the service's first particle item, never at registration or construction.

Index

Accessors

Methods

dispose setId setModel setProjection setView use create

Accessors

disposed

get disposed(): boolean
Whether ParticleIdProgram.dispose has run.

Returns boolean
- Defined in gl-picking.ts:373

Methods

dispose

dispose(): void
Deletes the GL program (§83). Idempotent; live context only.

Returns void
- Defined in gl-picking.ts:406

setId

setId(encoded: Float32Array): void
Uploads one encoded id colour (encodePickId's four floats).
Parameters
- encoded: Float32Array
Returns void
- Defined in gl-picking.ts:401

setModel

setModel(matrix: Matrix4): void
Uploads one particle system's world matrix.
Parameters
- matrix: Matrix4
Returns void
- Defined in gl-picking.ts:395

setProjection

setProjection(matrix: Matrix4): void
Uploads the camera's projection. Column-major (§7b).
Parameters
- matrix: Matrix4
Returns void
- Defined in gl-picking.ts:383

setView

setView(matrix: Matrix4): void
Uploads the camera's view matrix. See ParticleIdProgram.setProjection.
Parameters
- matrix: Matrix4
Returns void
- Defined in gl-picking.ts:389

use

use(): void
Makes this the current program. Call before any upload below.

Returns void
- Defined in gl-picking.ts:378

`Static`create

create(gl: WebglContext): ParticleIdProgram
Compiles and links the particle id program on gl — IdPassProgram.create's contract with "pick-particle-id" in the messages.
Parameters
- gl: WebglContext
Returns ParticleIdProgram
- Defined in gl-picking.ts:350