minimumDistance function (context query)

Syntax

• float minimumDistance(target-selector, label)

Parameters

1. target-selectorkeyword

   Target selector for the query.

   • intra—Checks against labeled shapes in the same shape tree (i.e. from the same inital shape).
   • inter—Checks against labled shapes in other shape trees (i.e. generated by other initial shapes in the neighborhood).
   • all—checks both intra andinter.
2. label—string
   The context query is performed only on shapes that match the requested lablel . Must not be empty. If the label is empty, infinity is returned.

Description

The minimumDistance function is a context query that returns the distance of the current scope to the scopes of other shapes.

Note:

Learn more about important characteristics for context queries in conditions and inter context.

Returns

The minimum distance of the current scope to all scopes of shapes that match the given label. If no shape is found matching the specified label, infinity is returned.

Related

• Context and occlusion queries
• contextCompare function
• contextCount function
• isinf function
• lablel operation

Examples

Split rule

This example applies the Lot rule to a single shape (intra context). The shape is split in x- and z-direction into small lots. At the center of the initial shape a shape with label "label" is created. Each lot in the grid is extruded with respect to the minimum distance to the labeled center shape. Lot --> split(x) { ~0.1 : Lot(split.index) }* Lot(x) --> split(z) { ~0.1 : Lot(x, split.index) }* Lot(x, z)--> [ case (x == 12) && (z == 12) : label("label") else : NIL ] Extrude(minimumDistance(intra, "label")) Extrude(dist) --> case dist < 1 : extrude(1-dist) X. else : NIL

Scatter rule

This example applies the Lot rule to a single shape (intra context). Scattered cylinders are labeled with "label" and colored red in 1% of all cases. In all other cases cylinders are placed if they are more than a distance of 1 away from a red cylinder Lot --> scatter(surface, 500, uniform) { Scattered } Scattered --> 1% : Label else : Check Label --> primitiveCylinder(16, 0.1, 1) color(1,0,0) label("label") Check --> case minimumDistance(intra,"label") < 1 : NIL else : primitiveCylinder(16, 0.05, 0.5)