4D Construction Scheduling

Drives a View from a project schedule: map each task to the SceneObject ids it builds / installs / commissions, scrub the time cursor, and the scene transitions through Pending → InProgress → Complete states for every object as its task starts and finishes.

Usage

import * as xeokit from "@xeokit/sdk";

const schedule = new xeokit.presentations.schedule.Schedule({
  tasks: [
    {
      id:         "foundations",
      startDate:  "2026-03-01",
      endDate:    "2026-04-15",
      objectIds:  foundationIds,
      tradeColor: [0.55, 0.35, 0.20],
    },
    {
      id:         "shell",
      startDate:  "2026-04-10",
      endDate:    "2026-07-01",
      objectIds:  shellIds,
      tradeColor: [0.85, 0.50, 0.15],
    },
    {
      id:         "envelope",
      startDate:  "2026-06-15",
      endDate:    "2026-09-01",
      objectIds:  envelopeIds,
      tradeColor: [0.30, 0.55, 0.85],
    },
    // ...
  ],
});

const player = new xeokit.presentations.schedule.SchedulePlayer({
  schedule,
  view,
  playbackSpeed: 30,    // 30 schedule-days per real-time second
  autoPlay: true,
});

// Bind to a UI timeline:
slider.oninput = () => { player.progress = +slider.value / 100; };
playBtn.onclick = () => { player.playing ? player.pause() : player.play(); };

// React to milestones:
player.onMilestone.subscribe((p, task) => {
  record.cameraFlight.flyTo({
    aabb:    collisionIndex.getCombinedObjectAABB(task.objectIds),
    fitFOV:  45,
    duration: 1.8,
    arc:      true,
    easing:   "inThenOut",
  });
});
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