AI2 Component  (Version nb184)
com.google.appinventor.components.runtime.Polygon Class Reference
Inheritance diagram for com.google.appinventor.components.runtime.Polygon:
com.google.appinventor.components.runtime.PolygonBase com.google.appinventor.components.runtime.util.MapFactory.MapPolygon com.google.appinventor.components.runtime.MapFeatureBaseWithFill com.google.appinventor.components.runtime.util.MapFactory.MapFeature com.google.appinventor.components.runtime.util.MapFactory.HasFill com.google.appinventor.components.runtime.util.MapFactory.HasStroke com.google.appinventor.components.runtime.MapFeatureBase com.google.appinventor.components.runtime.util.MapFactory.HasFill com.google.appinventor.components.runtime.Component com.google.appinventor.components.runtime.util.MapFactory.MapFeature com.google.appinventor.components.runtime.util.MapFactory.HasStroke com.google.appinventor.components.runtime.Component

Public Member Functions

 Polygon (MapFactory.MapFeatureContainer container)
 
void Initialize ()
 
String Type ()
 
YailList Points ()
 
void Points (YailList points)
 
void PointsFromString (String pointString)
 
YailList HolePoints ()
 
void HolePoints (YailList points)
 
void HolePointsFromString (String pointString)
 
YailList Centroid ()
 
List< List< GeoPoint > > getPoints ()
 
List< List< List< GeoPoint > > > getHolePoints ()
 
void updatePoints (List< List< GeoPoint >> points)
 
void updateHolePoints (List< List< List< GeoPoint >>> points)
 
- Public Member Functions inherited from com.google.appinventor.components.runtime.PolygonBase
 PolygonBase (MapFactory.MapFeatureContainer container, MapFeatureVisitor< Double > distanceComputation)
 
- Public Member Functions inherited from com.google.appinventor.components.runtime.MapFeatureBaseWithFill
 MapFeatureBaseWithFill (MapFactory.MapFeatureContainer container, MapFeatureVisitor< Double > distanceComputation)
 
void FillColor (int argb)
 
int FillColor ()
 
void FillOpacity (float opacity)
 
float FillOpacity ()
 
- Public Member Functions inherited from com.google.appinventor.components.runtime.MapFeatureBase
void setMap (MapFactory.MapFeatureContainer container)
 
void removeFromMap ()
 
void Visible (boolean visibility)
 
boolean Visible ()
 
void StrokeColor (int argb)
 
int StrokeColor ()
 
void StrokeOpacity (float opacity)
 
float StrokeOpacity ()
 
void StrokeWidth (int width)
 
int StrokeWidth ()
 
void Draggable (boolean draggable)
 
boolean Draggable ()
 
void Title (String title)
 
String Title ()
 
void Description (String description)
 
String Description ()
 
void EnableInfobox (boolean enable)
 
boolean EnableInfobox ()
 
void ShowInfobox ()
 
void HideInfobox ()
 
double DistanceToPoint (double latitude, double longitude, boolean centroid)
 
double DistanceToFeature (MapFeature mapFeature, final boolean centroids)
 
void Click ()
 
void LongClick ()
 
void StartDrag ()
 
void Drag ()
 
void StopDrag ()
 
HandlesEventDispatching getDispatchDelegate ()
 
final synchronized GeoPoint getCentroid ()
 
final synchronized Geometry getGeometry ()
 
- Public Member Functions inherited from com.google.appinventor.components.runtime.util.MapFactory.MapFeature
void setMap (MapFeatureContainer map)
 

Protected Member Functions

Geometry computeGeometry ()
 
- Protected Member Functions inherited from com.google.appinventor.components.runtime.MapFeatureBase
 MapFeatureBase (MapFeatureContainer container, MapFeatureVisitor< Double > distanceComputation)
 
final synchronized void clearGeometry ()
 

Additional Inherited Members

- Static Public Attributes inherited from com.google.appinventor.components.runtime.Component
static final String ASSET_DIRECTORY = "component"
 
static final int ALIGNMENT_NORMAL = 0
 
static final int ALIGNMENT_CENTER = 1
 
static final int ALIGNMENT_OPPOSITE = 2
 
static final int ACCELEROMETER_SENSITIVITY_WEAK = 1
 
static final int ACCELEROMETER_SENSITIVITY_MODERATE = 2
 
static final int ACCELEROMETER_SENSITIVITY_STRONG = 3
 
static final int BUTTON_SHAPE_DEFAULT = 0
 
static final int BUTTON_SHAPE_ROUNDED = 1
 
static final int BUTTON_SHAPE_RECT = 2
 
static final int BUTTON_SHAPE_OVAL = 3
 
static final int COLOR_NONE = 0x00FFFFFF
 
static final int COLOR_BLACK = 0xFF000000
 
static final int COLOR_BLUE = 0xFF0000FF
 
static final int COLOR_CYAN = 0xFF00FFFF
 
static final int COLOR_DKGRAY = 0xFF444444
 
static final int COLOR_GRAY = 0xFF888888
 
static final int COLOR_GREEN = 0xFF00FF00
 
static final int COLOR_LTGRAY = 0xFFCCCCCC
 
static final int COLOR_MAGENTA = 0xFFFF00FF
 
static final int COLOR_ORANGE = 0xFFFFC800
 
static final int COLOR_PINK = 0xFFFFAFAF
 
static final int COLOR_RED = 0xFFFF0000
 
static final int COLOR_WHITE = 0xFFFFFFFF
 
static final int COLOR_YELLOW = 0xFFFFFF00
 
static final int COLOR_DEFAULT = 0x00000000
 
static final String DEFAULT_VALUE_COLOR_NONE = "&H00FFFFFF"
 
static final String DEFAULT_VALUE_COLOR_BLACK = "&HFF000000"
 
static final String DEFAULT_VALUE_COLOR_BLUE = "&HFF0000FF"
 
static final String DEFAULT_VALUE_COLOR_CYAN = "&HFF00FFFF"
 
static final String DEFAULT_VALUE_COLOR_DKGRAY = "&HFF444444"
 
static final String DEFAULT_VALUE_COLOR_GRAY = "&HFF888888"
 
static final String DEFAULT_VALUE_COLOR_GREEN = "&HFF00FF00"
 
static final String DEFAULT_VALUE_COLOR_LTGRAY = "&HFFCCCCCC"
 
static final String DEFAULT_VALUE_COLOR_MAGENTA = "&HFFFF00FF"
 
static final String DEFAULT_VALUE_COLOR_ORANGE = "&HFFFFC800"
 
static final String DEFAULT_VALUE_COLOR_PINK = "&HFFFFAFAF"
 
static final String DEFAULT_VALUE_COLOR_RED = "&HFFFF0000"
 
static final String DEFAULT_VALUE_COLOR_WHITE = "&HFFFFFFFF"
 
static final String DEFAULT_VALUE_COLOR_YELLOW = "&HFFFFFF00"
 
static final String DEFAULT_VALUE_COLOR_DEFAULT = "&H00000000"
 
static final float FONT_DEFAULT_SIZE = 14
 
static final int LAYOUT_ORIENTATION_HORIZONTAL = ComponentConstants.LAYOUT_ORIENTATION_HORIZONTAL
 
static final int LAYOUT_ORIENTATION_VERTICAL = ComponentConstants.LAYOUT_ORIENTATION_VERTICAL
 
static final int SCALING_SCALE_PROPORTIONALLY = 0
 
static final int SCALING_SCALE_TO_FIT = 1
 
static final int TYPEFACE_DEFAULT = 0
 
static final int TYPEFACE_SANSSERIF = 1
 
static final int TYPEFACE_SERIF = 2
 
static final int TYPEFACE_MONOSPACE = 3
 
static final int LENGTH_PREFERRED = -1
 
static final int LENGTH_FILL_PARENT = -2
 
static final int LENGTH_UNKNOWN = -3
 
static final int LENGTH_PERCENT_TAG = -1000
 
static final int TOAST_LENGTH_SHORT = 0
 
static final int TOAST_LENGTH_LONG = 1
 
static final int DIRECTION_NORTH = 1
 
static final int DIRECTION_NORTHEAST = 2
 
static final int DIRECTION_EAST = 3
 
static final int DIRECTION_SOUTHEAST = 4
 
static final int DIRECTION_SOUTH = -1
 
static final int DIRECTION_SOUTHWEST = -2
 
static final int DIRECTION_WEST = -3
 
static final int DIRECTION_NORTHWEST = -4
 
static final int DIRECTION_NONE = 0
 
static final int DIRECTION_MIN = -4
 
static final int DIRECTION_MAX = 4
 
static float SLIDER_MIN_VALUE = 10
 
static float SLIDER_MAX_VALUE = 50
 
static float SLIDER_THUMB_VALUE = (SLIDER_MIN_VALUE + SLIDER_MAX_VALUE) / 2.0f
 
static final String DEFAULT_VALUE_TEXT_TO_SPEECH_COUNTRY = ""
 
static final String DEFAULT_VALUE_TEXT_TO_SPEECH_LANGUAGE = ""
 
- Protected Attributes inherited from com.google.appinventor.components.runtime.MapFeatureBase
MapFeatureContainer container = null
 
Map map = null
 

Detailed Description

Polygon encloses an arbitrary 2-dimensional area on a Map. Polygons can be used for drawing a perimeter, such as a campus, city, or country. Polygons begin as basic triangles. New vertices can be created by dragging the midpoint of a polygon away from the edge. Clicking on a vertex will remove the vertex, but a minimum of 3 vertices must exist at all times.

Definition at line 55 of file Polygon.java.

Constructor & Destructor Documentation

◆ Polygon()

com.google.appinventor.components.runtime.Polygon.Polygon ( MapFactory.MapFeatureContainer  container)

Definition at line 110 of file Polygon.java.

Member Function Documentation

◆ Centroid()

YailList com.google.appinventor.components.runtime.Polygon.Centroid ( )

Gets the centroid of the Polygon as a (latitude, longitude) pair.

Reimplemented from com.google.appinventor.components.runtime.MapFeatureBase.

Definition at line 308 of file Polygon.java.

◆ computeGeometry()

Geometry com.google.appinventor.components.runtime.Polygon.computeGeometry ( )
protected

Reimplemented from com.google.appinventor.components.runtime.MapFeatureBase.

Definition at line 328 of file Polygon.java.

◆ getHolePoints()

List<List<List<GeoPoint> > > com.google.appinventor.components.runtime.Polygon.getHolePoints ( )

Gets the hole points for the (multi-)polygon, if any, in GeoPoint format.

Returns
a list of lists of lists of GeoPoint, where each element in the outermost list corresponds to a polygon defined at the n-th position in getPoints().

Implements com.google.appinventor.components.runtime.util.MapFactory.MapPolygon.

Definition at line 318 of file Polygon.java.

◆ getPoints()

List<List<GeoPoint> > com.google.appinventor.components.runtime.Polygon.getPoints ( )

Gets the points defining the (multi-)polygon in GeoPoint format.

Returns
a list of lists of GeoPoint. Note that this is consistent with the multipolygon format and for single polygons the size of the list will be 1.

Implements com.google.appinventor.components.runtime.util.MapFactory.MapPolygon.

Definition at line 313 of file Polygon.java.

◆ HolePoints() [1/2]

YailList com.google.appinventor.components.runtime.Polygon.HolePoints ( )

Gets the list of points defining holes in the polygon, in (lat, long) format. If the polygon is actually a multipolygon, this will return a list of lists of lists, with each element in the outer list corresponding to one of the polygon parts defined in Points().

Returns
a list of the polygon's hole points.

Implements com.google.appinventor.components.runtime.util.MapFactory.MapPolygon.

Definition at line 221 of file Polygon.java.

◆ HolePoints() [2/2]

void com.google.appinventor.components.runtime.Polygon.HolePoints ( YailList  points)

Specifies the points of any holes in the Polygon. The HolePoints property is a list of lists, with each sublist containing (latitude, longitude) points representing a hole.

Parameters
pointsa list of lists of lists defining the holes in each part of the multipolygon.

Implements com.google.appinventor.components.runtime.util.MapFactory.MapPolygon.

Definition at line 243 of file Polygon.java.

◆ HolePointsFromString()

void com.google.appinventor.components.runtime.Polygon.HolePointsFromString ( String  pointString)

Specifies holes in a Polygonfrom a GeoJSON string. In contrast to HolePoints(YailList), the longitude of each point comes before the latitude as stated in the GeoJSON specification.

Parameters
pointString

Definition at line 277 of file Polygon.java.

◆ Initialize()

void com.google.appinventor.components.runtime.Polygon.Initialize ( )

Definition at line 115 of file Polygon.java.

◆ Points() [1/2]

YailList com.google.appinventor.components.runtime.Polygon.Points ( )

Gets the list of points defining the polygon, in (lat, long) format. If the polygon is actually a multipolygon, this will return a list of lists of points, with each element in the outer list representing a portion of the multipolygon.

Returns
a list of the polygon's points.

Implements com.google.appinventor.components.runtime.util.MapFactory.MapPolygon.

Definition at line 134 of file Polygon.java.

◆ Points() [2/2]

void com.google.appinventor.components.runtime.Polygon.Points ( YailList  points)

Specifies the Points used for drawing the Polygon. The Points are specified as a list of lists containing latitude and longitude values, such as [[lat1, long1], [lat2, long2], ...].

Parameters
pointsa list of points defining the polygon.

Implements com.google.appinventor.components.runtime.util.MapFactory.MapPolygon.

Definition at line 158 of file Polygon.java.

◆ PointsFromString()

void com.google.appinventor.components.runtime.Polygon.PointsFromString ( String  pointString)

Specifies the points for the Polygon from a GeoJSON string. Unlike Points(YailList), this property expects that the longitude comes first in the point rather than the latitude.

Parameters
pointString

Definition at line 189 of file Polygon.java.

◆ Type()

String com.google.appinventor.components.runtime.Polygon.Type ( )

The type (class) of the map feature. Typically this should be getClass().getSimpleName().

Returns
string representing the type of the feature

Implements com.google.appinventor.components.runtime.util.MapFactory.MapFeature.

Definition at line 127 of file Polygon.java.

◆ updateHolePoints()

void com.google.appinventor.components.runtime.Polygon.updateHolePoints ( List< List< List< GeoPoint >>>  points)

Updates the internal representation of the hole points for the (multi-)polygon. This is intended to only be called to finalize a drag operation so that the internal representation is consistent with the final visual location of the polygon at the end of the drag. NB: This should not invalidate the map view.

Parameters
pointsthe lists of ring lists representing the new hole locations for the (multi-)polygon.

Implements com.google.appinventor.components.runtime.util.MapFactory.MapPolygon.

Definition at line 340 of file Polygon.java.

◆ updatePoints()

void com.google.appinventor.components.runtime.Polygon.updatePoints ( List< List< GeoPoint >>  points)

Updates the internal representation of the points defining the polygon. This is intended to only be called to finalize a drag operation so that the internal representation is consistent with the final visual location of the polygon at the end of the drag. NB: This should not invalidate the map view.

Parameters
pointsthe ring list representing the new points for the (multi-)polyon.

Implements com.google.appinventor.components.runtime.util.MapFactory.MapPolygon.

Definition at line 333 of file Polygon.java.


The documentation for this class was generated from the following file: