Antlion / Components / Section analysis

Section analysisANALYSIS-001

Checks the sightline over the row in front, row by row, and reports the C-value. Draws the sightlines and dimensions so you can see where the view fails.

1Plan & setup

2Section

32D layout

43D solids

5Analysis

core Bowl Analysis 8 in · 9 out

Fig. 1 — PortsReads left, writes right

Section analysis component in Grasshopper

Stand Sections SSDObject · listThe sections to check, from Section or Section Plus

C-Value Mode ▾ C ValText · itemSTANDARD aims straight at the focal point, VARIABLE_CORNER allows for the corners

Minimum C-Value Min CNumber · itemRows below this are reported POOR

Show Dimensions Show DimBoolean · itemDraw the dimension annotations

Text Offset Text OffNumber · itemHow far the dimension lines sit from the geometry

Text Height Text HNumber · itemDimension text height

Dimension Style Dim StylObject · itemA Rhino dimension style to draw with

Panel Values PanelObject · itemEvery value from Input Panel, as one bundle

Analysis Reports Reports ⊞Object · listThe full result per tier

OK Dimensions OK DimsGeometry · listC-value dimensions for rows that pass

Poor Dimensions Poor DimGeometry · listC-value dimensions for rows that fail

Riser Dimensions Riser DmGeometry · listRiser height dimension on each step

OK Sightlines OK SightCurve · listSightlines for rows that pass, plus each tier's last row

Poor Sightlines Poor SgtCurve · listSightlines for rows that fail

Barrier Dimensions Barr DimGeometry · listC-value dimension at the barrier top point

Report Text · listPer-tier summary

Debug Text · itemDeveloper diagnostic output for tracking down bugs

Colored ports carry the chain from one component to the next. The rest are values you set once. Inputs marked ▾ take a Value List: wire one in and it fills with the choices. Outputs marked ⊞ can go into Table Out, which writes them to a spreadsheet.

Inputs

Stand SectionsSSDThe sections to check, from Section or Section Plus. One branch per tier
C-Value Mode▾ C ValSTANDARD aims straight at the focal point, VARIABLE_CORNER allows for the corners (default STANDARD)
Minimum C-ValueMin CRows below this are reported POOR. Leave it empty to judge each section by the value it was designed for (Table Section min_c_value, Auto Section Minimum C-Values; 90 mm if the section has none). 60 mm tolerable, 90 mm good, 120 mm excellent
Show DimensionsShow DimDraw the dimension annotations. Off = faster solve when you only want numbers (default true)
Text OffsetText OffHow far the dimension lines sit from the geometry (default 100 mm)
Text HeightText HDimension text height (default 50 mm)
Dimension StyleDim StylA Rhino dimension style to draw with. Leave unwired for the default
Panel ValuesPanelEvery value from Input Panel, as one bundle. Anything you wire in yourself wins over it

Outputs

Analysis ReportsReports ⊞The full result per tier - C-value per row, pass/fail and the warnings behind them
OK DimensionsOK DimsC-value dimensions for rows that pass
Poor DimensionsPoor DimC-value dimensions for rows that fail - these are the rows to fix
Riser DimensionsRiser DmRiser height dimension on each step
OK SightlinesOK SightSightlines for rows that pass, plus each tier's last row
Poor SightlinesPoor SgtSightlines for rows that fail - look here first
Barrier DimensionsBarr DimC-value dimension at the barrier top point
ReportReportPer-tier summary - rows, min and max C-value, pass rate
DebugDebugDeveloper diagnostic output for tracking down bugs. Copy this when reporting a problem

Component: ANALYSIS-001
Ribbon: Bowl Analysis
Tier: core
Ports: 8 in · 9 out
Version: 1.0.11
Checked: 2026-10-08