intersect

Type

function

Summary

Returns true if two objects overlap, false otherwise.

Syntax

intersect(<object>, <object> [, <threshold>] )

Description

Use the intersect function to determine whether one object obscures part of another object, or whether one object is over another object.

If both objects are stacks or cards, the intersect function returns true if the stack window|stack windows overlap.

The intersect function uses screen coordinates for stacks and cards, and window coordinates for controls. This means that if one object is a stack or card and the other is a control, the intersect function does not return a reliable result.

Parameters

Name	Type	Description
object		an object reference.
threshold	enum	The amount of transparency that pixels in the objects must have in order to be counted during the intersect calculation. Alternative (readable) theshold options

Examples

intersect(field "Comment",the selectedField)

if intersect(button "target", button "crosshairs") then flashScreen

if intersect(graphic "spaceship", graphic "asteroid", "opaque pixels") then endGame

answer intersect(image "gradient", grc "solid",125)

Related

function: within, stacks

glossary: control, relative coordinates, return, stack window, object

keyword: card, control

object: card, stack

property: layer

constant: return

control structure: function

Compatibility and Support

Introduced

LiveCode 1.0

OS

mac

windows

linux

ios

android

Platforms

desktop

server

mobile