Class IWParallelProjection

A parallel projection used by the standard map views.

IWParallelProjection

IWParallelProjection(map)

Default constructor.

Parameters:
IWMap map

calculateGridOffset

IWPoint calculateGridOffset()

Calculates the offset of the point (0, 0) to a position on the tile grid.

Returns:
IWPoint the offset

clone

clone()

undocumented

generateTileInformation

object generateTileInformation(x, y, gridOffset)

Generates information like the tile screen position, tile index and tile id for a pixel position.

Parameters:
number x - screen position of the tile
number y - screen position of the tile
IWPoint gridOffset - offset of (0, 0) to the tile grid

Returns:
object 

initialize

void initialize(obj)

Initializes the projection object.

Parameters:
Object obj

Returns:
void 

meterToPixel

IWPoint meterToPixel(coordinate)

Returns the pixel position for the given coordinate.

Parameters:
IWCoordinate coordinate - the given coordinate

Returns:
IWPoint 

needsReload

boolean needsReload(size)

Checks whether the map has to be reloaded completely to display the specified region. This is always false for map types with parallel projections.

Parameters:
IWSize size - the size of the visible part of the map in pixels

Returns:
boolean 

pixelToMeter

IWCoordinate pixelToMeter(point)

Returns the coordinate for the given pixel position.

Parameters:
IWPoint point - the pixel position

Returns:
IWCoordinate 

toString

String toString()

Returns a string representation of the parallel projection.

Returns:
String