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@mk7s/holochart-render

v0.1.0-alpha.0

Published

three.js rendering engine: renderer, viewports, GPU primitives, picking.

Vulnerabilities

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Links

Git

Maintainers

s8njees8njee

Keywords

chartsplotlywebglthreedata-visualizationgpurenderersdf-text

Readme

@mk7s/holochart-render

The three.js rendering engine under Holochart: the render root and viewports, GPU primitives (lines, markers, fills, rects, text, meshes), colorscale textures and picking. Part of Holochart, declarative GPU charts on three.js.

Alpha. Released as 0.1.0-alpha on the npm alpha tag; APIs can change between 0.x releases. Most apps should install the full bundle, @mk7s/holochart, which includes this package (as the render namespace).

The low-level API (primitives, viewports, picking) is experimental until the plugin API stabilises; the fonts and symbols registries are the parts meant for apps.

Install

pnpm add @mk7s/holochart-render@alpha three

three is a peer dependency, so your app and Holochart share one copy. ESM-only; Node 22 and newer can also require() it.

What it exports

  • Registries: fonts (register font families for chart text) and symbols (custom marker symbols from SVG paths)
  • Engine: createRenderRoot, RenderRoot, Viewport, RenderLoop, createResourceManager
  • Primitives: LinePrimitive, createMarkers, createFillPrimitive, createRectPrimitive, createTextPrimitive, createMeshPrimitive, createHeatmapPrimitive, createMarkers3D
  • Picking: createPicker, GpuPicker
  • Fonts: the default font's files, under the @mk7s/holochart-render/fonts/* subpath

Usage

import { fonts, symbols } from '@mk7s/holochart-render';

fonts.register('Inter', { regular: '/fonts/Inter.woff', bold: '/fonts/Inter-Bold.woff' });
symbols.register('pin', { path: 'M12 2C8 2 5 5 5 9c0 5 7 13 7 13s7-8 7-13c0-4-3-7-7-7z' });
// marker.symbol: 'pin' and layout.font.family: 'Inter' now work in every chart

Docs

License

MIT (see LICENSE). The default font, TeX Gyre Heros (in fonts/, and as data: URLs in the lazy dist/texgyreheros-*.js chunks), is under the GUST Font License; see fonts/GUST-FONT-LICENSE.txt.