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@keyframe-engine/sdf

v1.0.3

Published

@keyframe-engine/sdf — SDF Raymarching Engine & CSG Primitive Keyframe Bridge

Readme

@keyframe-engine/sdf

npm version License: MIT

@keyframe-engine/sdf 是 Keyframe Engine 的 Signed Distance Field (SDF) 隐式距离场造型与 Raymarching 光线步进渲染包。


核心功能

  • WebGL2 / WebGPU CSG Raymarching Engine: 提供 SdfEngineSdfWebGPUEngine,支持球体 (sdSphere)、立方体 (sdBox)、圆柱 (sdCylinder)、胶囊体 (sdCapsule)、圆环 (sdTorus) 的构造实体几何 (CSG) 渲染。
  • CPU 距离场求值: evalSceneMap 导出 CPU 端的 SDF 场景距离算法。
  • Keyframe Engine 桥接:
    • initKeyframeBridge / solvePoses 能直接解析 Keyframe Engine 评估得到的 80 字节 GpuInstanceData 矩阵,提取位置与四元数姿态并同步至 SDF 几何体。

安装

pnpm add @keyframe-engine/sdf @keyframe-engine/core

快速上手

import { Engine } from "@keyframe-engine/core";
import { initKeyframeBridge, SdfEngine, PRESETS } from "@keyframe-engine/sdf";

const engine = new Engine();
// ... 初始化 engine

const canvas = document.querySelector("canvas")!;
const sdfEngine = new SdfEngine(canvas);
sdfEngine.loadScene(PRESETS.twoSpheres);

// 初始化动画桥接
const bridge = initKeyframeBridge(engine, sdfEngine);

function render(timeMs: number) {
  bridge.update(timeMs);
  sdfEngine.render();
  requestAnimationFrame(render);
}

许可证

MIT