Pin Rail Position Distance Lookup

Read supplied physical plan rail/drop offsets, not mechanical line routing, rigging design, structural clearance or coordinate transformation.

Description

Rail/drop offsets are distances between paired points on a common physical plan.

Rail/drop offsets are distances between paired points on a common physical plan. They differ from the path of a rigging line.^[1]

Enter aligned nonempty two-column local coordinates and nonnegative offset maximum. Return distances and strictly-above indices.

When to use Pin Rail Position Distance Lookup

Use Pin Rail Position Distance Lookup when you need to evaluate the supplied records under the calculation and evidence rules below. No coordinate transformation, line routing or structural clearance is calculated.

Prepare the actual venue, production, inventory or financial records requested. Confirm units and supply applicable local limits or verified catalog values.

How to use Pin Rail Position Distance Lookup and understand its results

Prepare the actual venue, production, inventory or financial records requested. Confirm units and supply applicable local limits or verified catalog values.
Enter pinRailLocalCoordinatesM, correspondingLineDropCoordinatesM, callerMaximumLateralOffsetM using the field table and calculation rules, then run the tool.
Read observedRailToDropDistancesM, offsetsAboveCallerPlanBudget. The explanation below defines the units, signs, ordering and any flags or placeholder values.
If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.

Input field	Meaning	Value type; see rules below	Requirement
pinRailLocalCoordinatesM	Pin rail local coordinates m	list of list of number	Required
correspondingLineDropCoordinatesM	Corresponding line drop coordinates m	list of list of number	Required
callerMaximumLateralOffsetM	Caller maximum lateral offset m	number	Required

Enter aligned nonempty two-column local coordinates and nonnegative offset maximum. Return distances and strictly-above indices.

distance=hypot(dropX−railX,dropY−railY)

Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.

Output field	Meaning	Value type
observedRailToDropDistancesM	Observed rail to drop distances m	list of number
offsetsAboveCallerPlanBudget	Offsets above caller plan budget	list of number

json

{
  "input": {
    "pinRailLocalCoordinatesM": [
      [
        0,
        0
      ],
      [
        0,
        4
      ]
    ],
    "correspondingLineDropCoordinatesM": [
      [
        3,
        0
      ],
      [
        3,
        4
      ]
    ],
    "callerMaximumLateralOffsetM": 2
  },
  "output": {
    "observedRailToDropDistancesM": [
      3,
      3
    ],
    "offsetsAboveCallerPlanBudget": [
      0,
      1
    ]
  }
}

Limitations and assumptions

No coordinate transformation, line routing or structural clearance is calculated.

Numeric inputs, where present, must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Matrices are limited to 128 rows and 128 entries per row. Numeric lists are limited to 10,000 entries; string lists to 128 strings of at most 128 characters each. The rules above may impose smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.

Alternative or Complementary methods

Use Loading Gallery Offset Alignment Checker: Loading-gallery alignment compares observed positions on a shared axis. Signed offsets preserve which side of the arbor a bay occupies. For a complementary task, use Border Mask Height Sightline Calculator: A border-plane sightline is an interpolation along a supplied eye-to-target ray. A local 2D test cannot capture every viewing path.

References

Pin Rail Position Distance Lookup — tool.io

Similar or alternative tools

Loading Gallery Offset Alignment Checker
Loading-gallery alignment compares observed positions on a shared axis. Signed offsets preserve which side of the arbor a bay occupies.
Border Mask Height Sightline Calculator
A border-plane sightline is an interpolation along a supplied eye-to-target ray. A local 2D test cannot capture every viewing path.