@babylonjs/viewer/dist/chunks/floating-origin-DSf1ok9j.esm.js

The Babylon Viewer aims to simplify a specific but common Babylon.js use case: loading, viewing, and interacting with a 3D model.

import { L as LIGHT_ENTRY_FLOATS, M as MAX_LIGHTS } from './index-By0tcgYN.esm.js';

function getFloatingOriginOffset(scene) {
  const cam = scene.camera;
  if (!cam) {
    return { x: 0, y: 0, z: 0 };
  }
  const w = cam.worldMatrix;
  return { x: w[12], y: w[13], z: w[14] };
}
function lightFoVersion(scene) {
  return scene.camera ? scene.camera.worldMatrixVersion : 0;
}
function applyLightFoOffset(data, scene) {
  const cam = scene.camera;
  const w = cam?.worldMatrix;
  if (!w) {
    return;
  }
  const ox = w[12];
  const oy = w[13];
  const oz = w[14];
  let count = 0;
  for (const light of scene.lights) {
    if (count >= MAX_LIGHTS) {
      break;
    }
    if (!light._writeLightUbo) {
      continue;
    }
    const o = 4 + count * LIGHT_ENTRY_FLOATS;
    const type = data[o + 3];
    if (type === 0 || type === 2) {
      const lw = light.worldMatrix;
      data[o] = lw[12] - ox;
      data[o + 1] = lw[13] - oy;
      data[o + 2] = lw[14] - oz;
    }
    count++;
  }
}
function wrapRenderableForFO(inner, scene, invalidate) {
  let _lastCameraVersion = -1;
  return () => {
    const cv = scene.camera ? scene.camera.worldMatrixVersion : -1;
    if (cv !== _lastCameraVersion) {
      invalidate();
      _lastCameraVersion = cv;
    }
    inner();
  };
}

export { applyLightFoOffset, getFloatingOriginOffset, lightFoVersion, wrapRenderableForFO };
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