{
  "schemaVersion": 1,
  "artifactType": "original-task-practice-definition",
  "taskId": "crank-slider-linked-stroke",
  "family": "B",
  "evidenceClass": "method-not-independently-tested",
  "createdAt": "2026-10-21T18:04:34.540Z",
  "modelId": "MiniMax-H3",
  "mode": "image-to-video",
  "title": {
    "en": "MiniMax H3 crank-slider prompt: keep both rod pivots attached",
    "zh": "MiniMax H3 曲柄滑块提示词：连杆两端始终接在原来的轴点上"
  },
  "task": {
    "en": "Brief one connected motion in which rotation becomes a small linear slider displacement. The connecting rod is an active constraint, not a decorative line between separately animated parts.",
    "zh": "写清旋转怎样通过连接关系带出小幅直线位移。连杆是动作约束，不是两个各自运动物件之间的一条装饰线。"
  },
  "input": {
    "file": "first-frame.png",
    "designSource": "first-frame.svg",
    "role": "first-frame",
    "kind": "synthetic-original-geometric-practice-input",
    "width": 1024,
    "height": 1024,
    "modelOutput": false
  },
  "interface": {
    "variant": "base",
    "addEndFrameEnabled": true,
    "firstFrame": "first-frame.png",
    "lastFrame": null,
    "fastCompatible": false,
    "automaticSubmission": false
  },
  "constraints": {
    "en": "The wheel hub and the horizontal guide stay fixed. Follow the off-center pin, both rod endpoints and the slider outline. In this starting sector, a small clockwise turn brings the pin closer to the rightmost wheel position and can move the slider modestly right; the input is not at a reversal.",
    "zh": "轮心和水平导轨固定。依次跟踪偏心销、连杆两端与滑块轮廓。在当前起始区间，小幅顺时针转动使销点靠近轮的最右侧，滑块可小幅右移；本首帧不处在行程换向点。"
  },
  "acceptance": {
    "en": [
      "The wheel hub and horizontal guide remain fixed relative to the frame.",
      "The same rod connects the same off-center wheel pin to the slider at every visible stage.",
      "The slider travels within the guide without rotating, while the rod retains a coherent rigid length.",
      "The ending retains all connections and stops before a full cycle or a second stroke."
    ],
    "zh": [
      "轮心和水平导轨相对画面固定。",
      "同一根连杆持续连接原来的偏心销和滑块轴点。",
      "滑块仅在导轨内移动，不旋转；连杆长度关系连贯。",
      "结尾所有连接仍在，停在整圈或第二次行程之前。"
    ]
  },
  "ending": {
    "en": "A slightly advanced crank, one still-connected angled rod and one displaced slider remain in a stable end pose inside the original apparatus.",
    "zh": "曲柄前进少许，一根仍相连的斜杆与一个小幅移位的滑块保留在原装置内，姿态停稳。"
  },
  "limits": {
    "en": "The drawing supports a qualitative linkage-continuity exercise. It is not a measured stroke, motor design, engineering verification or an independently tested H3 result.",
    "zh": "本图用于定性连接连续性练习，不是量测行程、马达设计、工程验证或经过独立测试的 H3 结果。"
  },
  "distinctTaskBoundary": {
    "en": "The gear task couples two rotations, the drawer task has one translation and the lamp has one pivot. Here one moving rigid rod must join a rotating offset pin to a guided translating part.",
    "zh": "齿轮题连接两种旋转，抽屉题只有平移，台灯题只有单轴；这里的活动刚杆必须连接偏心旋转点与受导轨限制的平移件。"
  },
  "nearestExistingTemplatePaths": [
    "/templates/paired-gears-opposite-rotation",
    "/templates/drawer-linear-open-fixed-cabinet",
    "/templates/desk-lamp-one-joint-tilt"
  ],
  "demandClass": "dated-broad-parent-intent-and-product-operation-findability; exact-task-demand-unmeasured",
  "execution": {
    "modelRun": false,
    "outputAsset": null,
    "providerSuccessClaim": false
  }
}