{
  "source": "课堂4.mp4",
  "stages": [
    {
      "file": "https://github.com/alowhit/alowhit.github.io/releases/download/vfx-source-videos-2026-11/project-0f03d8487fcd6d77-05_Fresnel_Study.max",
      "reopened": true,
      "falloff_type": 2,
      "direction": 0,
      "ior": 1.600000023841858,
      "override": true,
      "colors": [
        "(color 255 255 255)",
        "(color 0 0 0)"
      ]
    },
    {
      "file": "https://github.com/alowhit/alowhit.github.io/releases/download/vfx-source-videos-2026-11/project-81324c452dffeff5-06_ShadowLight_Study.max",
      "reopened": true,
      "falloff_type": 3,
      "direction": 0,
      "ior": 1.600000023841858,
      "override": true,
      "colors": [
        "(color 255 255 255)",
        "(color 0 0 0)"
      ]
    }
  ],
  "source_evidence": {
    "230": "Fresnel selected; top white bottom black; override checked",
    "260": "Shadow Light selected; IOR1.6 inactive; early smooth curve",
    "190": "PhotometricLight001 position814.246,-97.989,280.147; target distance897.663; Uniform Spherical; D65; cd1500 visible"
  },
  "lights_retained": [
    {
      "name": "PhotometricLight001",
      "class": "Target_Area",
      "position": "[814.246,-97.989,280.147]",
      "on": "True"
    },
    {
      "name": "PhotometricLight001.Target",
      "class": "Targetobject",
      "position": "[0.934067,172.079,12.9656]",
      "on": "None"
    },
    {
      "name": "TPhotometricLight001",
      "class": "Target_Area",
      "position": "[-730.726,-31.5383,147.581]",
      "on": "True"
    },
    {
      "name": "TPhotometricLight001.Target",
      "class": "Targetobject",
      "position": "[2.13225,110.305,153.337]",
      "on": "None"
    },
    {
      "name": "TPhotometricLight002",
      "class": "Target_Area",
      "position": "[-3.44992e-05,-789.25,495.887]",
      "on": "True"
    },
    {
      "name": "TPhotometricLight002.Target",
      "class": "Targetobject",
      "position": "[1.59591e-05,365.102,225.896]",
      "on": "None"
    }
  ],
  "limits": [
    "early curve is course46 GUI approximation",
    "uses07:30 camera for stable comparison, not early viewport camera",
    "lights kept from later teacher scene; temporal matching not claimed",
    "emission1 luminance5 retained",
    "render differences alone do not establish renderer feature support"
  ]
}