Description
Return centered frame-size offsets.
Artwork measurements distinguish physical dimensions, projected regions and scale conventions. Length, area and volume change with different powers of a scale, while frame overlaps and crop geometry depend on which boundaries were measured. A numerical fit does not identify an artwork or establish its historical interpretation.
Return centered frame-size offsets.
When to use this tool
Use Artwork Measurement Frame Offset when checking the stated artwork dimension, crop, frame or scale relation.
How to use the tool and how it works
- Enter framedWidth, artworkWidth, framedHeight, artworkHeight. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read horizontalPerSide, verticalPerSide. Use the output convention below.
Return centered frame-size offsets. Require nonnegative artwork dimensions and framed dimensions at least as large; horizontal/verticalPerSide are half the paired differences.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| framedWidth | Framed Width | Required. Finite number. |
| artworkWidth | Artwork Width | Required. Finite number; minimum 0. |
| framedHeight | Framed Height | Required. Finite number. |
| artworkHeight | Artwork Height | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| horizontalPerSide | Horizontal Per Side | Required. Finite number. |
| verticalPerSide | Vertical Per Side | Required. Finite number. |
{
"input": {
"framedWidth": 80,
"artworkWidth": 60,
"framedHeight": 100,
"artworkHeight": 70
},
"output": {
"horizontalPerSide": 10,
"verticalPerSide": 15
}
}Limitations and assumptions
- This assumes centering and does not measure frame molding, actual sight size, object condition or safe mounting.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Inspect the original object, measured boundaries and appropriate complete geometry or catalog record for physical or historical conclusions.
References
Similar or alternative tools
- Historic Frame Sight Size Deduction
Return framed sight dimensions and hidden area.
- Art Work Diptych Panel Gap Width
Return combined diptych width and gap share.