Calculations

Calculations

• Vertex positions and normals written

  Fills the position and normal buffers of an object.

  n = (b − a) × (c − a) ÷ |…|

  3D check view exported as glTF glb.js

  • TakeoffCraft
  32-bit in part

• Bounds of each position buffer

  The minimum and maximum of a position buffer, written beside it.

  3D check view exported as glTF glb.js

  • TakeoffCraft
  32-bit in part

• Quantities carried with each object

  Attaches each object's mark, item, kind and measured values to its node.

  3D check view exported as glTF glb.js

  • TakeoffCraft
  64-bit

• Arcs as Bézier curves for drawing

  Turns a run or an outline into move, line and curve commands.

  k = 4 ÷ 3 × tan(φ ÷ 4); c₁ = p₀ + k·r·tangent₀; c₂ = p₃ − k·r·tangent₁

  Marks and sheets written to PDF geom.js

  • TakeoffCraft
  64-bit

• A mark's path written to the page

  Writes a mark's commands as PDF path operators.

  Marks and sheets written to PDF pdfmarks.js

  • TakeoffCraft
  64-bit

• Quantities printed in the legend

  The quantity of each item on that sheet, as text in the page's legend.

  Marks and sheets written to PDF pdfmarks.js

  • TakeoffCraft
  64-bit

• A drawing's lines written as vector paths

  Writes each batch of the drawing's lines to the PDF page under the sheet's matrix.

  width = max(0.25, lw × 72 ÷ 25.4 [× 0.5]) ÷ scale

  Marks and sheets written to PDF cadpdf.js

  • TakeoffCraft
  64-bit

• Unit conversions to the factor table's basis

  How many meters, square meters, cubic meters or items one of each takeoff unit is.

  CY → m³: × 0.764554858 (exact: 0.9144³ = 0.764554857984)

  Embodied carbon from quantities carbon.js

  • TakeoffCraft
  64-bit

• Quantity in the factor's basis

  Converts a line's quantity with waste into the unit its carbon factor is given in.

  qty = qtyW × factor; kg basis: qtyW × factor × density

  Embodied carbon from quantities carbon.js

  • TakeoffCraft
  64-bit

• Kilograms per line and the total

  The carbon of each line for the chosen modules, and their sum.

  kg = qty × (A1–A3 + A4 + A5); total = Σ kg

  Embodied carbon from quantities carbon.js

  • TakeoffCraft
  64-bit

• Carbon lines written to a file

  Writes each line's quantity and kilograms to a CSV file.

  written = round(v × 100) ÷ 100

  Embodied carbon from quantities carbon.js

  • TakeoffCraft
  64-bit

• Unit conversions for the price table

  The table unit and factor for each takeoff unit.

  Rates exported as a price table carbon.js

  • TakeoffCraft
  Exact

• Rates converted and rounded

  One table row per priced item, with its material rate, labor rate and waste.

  rate = round(rate4 ÷ 10000 × factor × 10⁶) ÷ 10⁶

  Rates exported as a price table carbon.js

  • TakeoffCraft
  64-bit

• Quantity rounded for the package

  Rounds a quantity to 4 decimals before it is sent.

  qty = round(v × 10000) ÷ 10000

  Quantities sent in a bid package bidsend.js

  • TakeoffCraft
  64-bit

• Scope lines of a package

  Builds the lines of a bid package: item, quantity, unit and sheets.

  Quantities sent in a bid package bidsend.js

  • TakeoffCraft
  64-bit

• Vertex buffers for the 3D view

  Copies an object's triangles into a buffer for the graphics card.

  Drawing the 3D check view and CAD sheets on screen view3d.js

  • TakeoffCraft
  32-bit, display only

• Canvas paths for a CAD sheet

  Builds the canvas paths of one batch of lines and fills.

  Drawing the 3D check view and CAD sheets on screen cadset.js

  • TakeoffCraft
  32-bit, display only