Description
Calculate lengthPerPixel=wallWidth/imageWidthPixels and featureLength=featurePixels*lengthPerPixel.
Studio measurements translate a design into lengths, areas, volumes, angles, proportions, and material quantities. Consistent units and an explicit geometric model make the calculation interpretable. Real materials, fabrication allowances, visual judgments, and installation conditions require information beyond a geometric term.
Calculate lengthPerPixel=wallWidth/imageWidthPixels and featureLength=featurePixels*lengthPerPixel.
When to use this tool
Use Mural Scaling Pixel To Wall Length when you need a geometric or material-budget term for a supplied studio design before checking real material and installation conditions.
How to use the tool and how it works
- Enter imageWidthPixels, wallWidth, featurePixels. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read lengthPerPixel, featureLength. Use the output convention below.
Calculate lengthPerPixel=wallWidth/imageWidthPixels and featureLength=featurePixels*lengthPerPixel. Require a positive integer image width and nonnegative wall width and feature size.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| imageWidthPixels | Image Width Pixels | Required. Safe integer; minimum 1. |
| wallWidth | Wall Width | Required. Finite number; minimum 0. |
| featurePixels | Feature Pixels | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| lengthPerPixel | Length Per Pixel | Required. Finite number. |
| featureLength | Feature Length | Required. Finite number. |
{
"input": {
"imageWidthPixels": 1000,
"wallWidth": 10,
"featurePixels": 250
},
"output": {
"lengthPerPixel": 0.01,
"featureLength": 2.5
}
}Limitations and assumptions
- Wall dimensions set the output length unit. FeaturePixels may exceed the image width or be fractional, and no aspect-ratio, lens-distortion, or surface-projection correction is applied.
- The field tables state structural bounds; the mechanics also specify cross-field constraints. Malformed inputs and unsupported domains cause errors. A successful false flag, empty branch value, or zero placeholder has the meaning stated above and is distinct from an input error.
- 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. Signed zero is exported as zero.
Alternative or Complementary methods
Use measured material allowances and a complete drawing or fabrication model when physical behavior matters. The supplied geometric term can be one input to that separate process.
References
Similar or alternative tools
- Mural Grid Origin Snap Token
Snap a supplied coordinate to an origin-relative grid with an explicit half-step side.
- Sculpture Hollow Cast Wall Volume
Closed rectangular shell with uniform inward wall thickness.