C-value SeatANALYSIS-004

Inputs

• Build ResultBRDThe built bowl, straight from Stand 3D Plus - or Rail 3D's Rail Result, which carries it. Merge several into one branch and they are checked as one bowl
• Rail ResultRLDRailings from Rail 3D - their exact built tops. Unwired, railings are not checked (orange warning) - the first row and the seats behind railings get no railing value. Merge several to match the bowls above
• Focal CurveFocal CThe line every seat aims at. Wire Field's Focal Curve, or draw your own
• Color SchemeSchemeA scheme from C-value Legend - it decides the colors and prints on every sheet. Unwired, the code's four steps are used and no legend prints
• Focal Aim Mode▾ AimWhich point on the pitch each seat is measured against. THROUGH_CORNER walks the boundary to the first point the row in front hides, so corners come out right on a closed bowl. PERPENDICULAR takes the point straight ahead of the seat, at the focal line's real height - use it on open stands and on a focal line that rises and falls, like a ballpark's infield to outfield (default THROUGH_CORNER)
• Minimum C-ValueMin CSeats below this are POOR. Leave it empty to judge each tier by the value its section 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
• Optimal C-ValueOpt CUpper end of the published band. Seats above it are drawn blue (default 120 mm)
• Tier EnabledTiersWhich tiers to build - one per tier, empty = every tier (default true)
• Show SightlinesShow SgtDraw the eye-to-focus line for every seat that has a focus - filter by Seat Statuses to keep only POOR or BLOCKED (default false)
• Rail CheckRail ChkCount railings and vomitory walls as sightline obstructions - the walls come with the build result, so they count without Rail Result too. Off = ignore them all, as if none were built (default on)
• Panel ValuesPanelEvery value from Input Panel, as one bundle. Anything you wire in yourself wins over it

Outputs

• C-value Map DataCMD ⊞The whole seat map flattened to 2D plan. Feed it to C-value Map for sheets
• Map HatchesHatchesOne branch per tier. One hatch per seat - the map itself. Bake it and the colors keep
• Seat OutlinesOutlinesOne branch per tier. The curve each seat hatch was made from
• Seat C-ValuesSeat COne branch per tier. Negative means the view is cut, NaN means no value
• Seat StatusesStatusOne branch per tier. OK / POOR / BLOCKED / OPEN / FRONT / NA
• Seat EyesEyesOne branch per tier. Eye position each seat was measured from
• Seat FocalsFocalsOne branch per tier. The focal point each seat was measured to
• Effective Focal CurvesEff FocalOne branch per tier. Where the pitch first comes into view looking straight ahead
• SightlinesSightlnsOne branch per tier. Drawn only when Show Sightlines is on
• ReportReportPer-tier summary. Seat-governed and railing-governed pass rates are separate
• DebugDebugDeveloper diagnostic output for tracking down bugs. Copy this when reporting a problem

What it does

Railings - vomitory walls included - are obstructions like the row in front, and whichever leaves the least clearance sets the seat's value. A railing the view clears by more than Optimal C-Value does not count while someone sits in front. A seat with nobody within 2 m straight ahead - the front row, or a seat behind an empty stretch of row - is graded against the railing or wall in front of it instead: one of its own tier whatever the clearance, one of another tier only when the view clears it by less than Optimal C-Value. With neither, the seat gets no value. A railing on another tier whose lowest tread is higher than the sightline where the two cross is overhead and is left out; this is judged by height, so it also holds in a bowl assembled from several stands. Near a corner a seat's focus can fall outside the field, on the extension of a goal line for example. There a railing that blocks the view to the focus counts only if it also blocks the view from the same eye to the nearest point of the field - otherwise it stands beside the view, and the next obstruction sets the value.