Referenceintersection

<intersection>

Renders intersections between graphical objects

<intersection> is a Graphical component that determines the intersection point of a pair of graphical objects. These can be <line>, <circle>, or <polygon> components.

The <intersection> component renders a point (or points in the case of multiple intersections) when nested inside a <graph> component, and renders a coordinate pair (or a list of coordinate pairs) otherwise.

Attributes and Properties

Attributes for <intersection>

Other (1)
asList

boolean. Default value: true. Whether to render the items separated by commas (true) or with no separator (false).

Common to all components (9)
copy

reference. Create an independent copy of another component by reference. Enter a references a $name.

disabled

boolean. Default value: false. Whether this component is disabled and cannot be interacted with.

extend

reference. Extend another component by reference, inheriting its children and attributes. Enter a reference as $name.

fixed

boolean. Default value: false. Whether this component's value is fixed and cannot be modified.

fixLocation

boolean. Default value: false. Whether this component's location is fixed (preventing it from being moved while still allowing other modifications).

hide

boolean. Default value: false. Whether to hide this component from the rendered output.

isResponse

boolean. Default value: false. Whether this component is treated as a response for the purposes of assessment.

name

text. The name used to reference this component from elsewhere in the document.

Style number applied to the resulting intersection components.

Properties for <intersection name="i">

Common to all components (3)
$i.doenetML

text. The DoenetML source code that produced this component.

$i.hide

boolean. Whether to hide this component from the rendered output.

$i.isResponse

boolean. Whether this component is treated as a response for the purposes of assessment.

Examples

Example: <intersection> of two lines

When inside a <graph>, the <intersection> component renders a point. Outside the graph, the coordinates of the intersection are rendered.

Example: <intersection> of line and polygon

When more than one <intersection> occurs between the specified components, the intersection points are stored in an array. Individual points can be accessed with array notation.

Example: <intersection> of circle and polyline

When more than one <intersection> occurs between the specified components, the intersection points are stored in an array. Individual points can be accessed with array notation.

Example: No <intersection> exists

Doenet does not return anything when no <intersection> exists.

Example: Overlapping lines

Doenet does not return anything when lines directly overlap.

Example: Collinear edges and lines

When a line and the edge of a polygon overlap, only the endpoints of the overlapped region are counted as intersection points.

Attribute Examples

Attribute Example: styleNumber

The style of an <intersection> component can be adjusted with the styleNumber attribute in the same manner as a <point>.

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