Fraction of a target's surface each observer point can see — which seats see the park, which units see the water. The target is sampled by area; rays are blocked by the context and by the target's own body.
Input
Name
Nickname
Description
Type
Context
C
Obstructing geometry between the observers and the target. Branches are flattened into one scene. The target itself must NOT be wired here. Optional — with nothing wired, only the target's own body occludes (a pure massing/self-occlusion study).
Geometry
Points
P
Observer points.
Point
Target
T
The geometry whose visibility is being rated. Branches are flattened into one target; it occludes itself, so a solid target's far side reads as hidden.
Geometry
Target Samples
S
Points the target is reduced to, allocated by area. More samples resolve partial views more finely; cost is linear per observer.
Integer
Offset
O
Clearance around ray endpoints, so observers and samples sitting ON geometry do not block themselves.
Number
Max Distance
D
Optional cap in metres — target samples farther than this count as not visible.
Number
Color Scheme
Ramp
Colour ramp for the Colors output. Viridis is perceptually uniform and colourblind-safe (use it in a figure); Grayscale suits a monochrome print.
Text
Output
Name
Nickname
Description
Type
Visibility
V
Fraction of the target's samples each observer can see, 0-1.
Number
Colors
Col
Point-specific colour ramp over visibility, for a mesh or point preview.
Colour
Target Points
TP
The area-weighted sample points the target was reduced to — preview these to judge whether Target Samples is enough.