Class Tile
- java.lang.Object
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- org.orekit.models.earth.tessellation.Tile
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- All Implemented Interfaces:
Serializable
public class Tile extends Object implements Serializable
Simple data structure for a quadrilateral tile shape on a body surface.This class is devoted to simple usage only. It assumes the edges are strictly between 0 and π radians and that the angles between edges are also strictly between 0 and π radians.
- Author:
- Luc Maisonobe
- See Also:
AlongTrackAiming
,ConstantAzimuthAiming
, Serialized Form
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Constructor Summary
Constructors Constructor Description Tile(GeodeticPoint v0, GeodeticPoint v1, GeodeticPoint v2, GeodeticPoint v3)
Create a tile.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description GeodeticPoint
getCenter()
Get the center point.GeodeticPoint
getInterpolatedPoint(double u, double v)
Get an interpolated point inside the tile.GeodeticPoint[]
getVertices()
Get the four vertices.
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Constructor Detail
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Tile
public Tile(GeodeticPoint v0, GeodeticPoint v1, GeodeticPoint v2, GeodeticPoint v3)
Create a tile.It is caller responsibility o ensure the vertices define a simple non-degenerated tile (i.e. edges are strictly between 0 than π radians and angles between edges are also strictly between 0 and π radians). No checks are performed here.
- Parameters:
v0
- first vertexv1
- second vertexv2
- third vertexv3
- fourth vertex
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Method Detail
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getVertices
public GeodeticPoint[] getVertices()
Get the four vertices.- Returns:
- four vertices
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getInterpolatedPoint
public GeodeticPoint getInterpolatedPoint(double u, double v)
Get an interpolated point inside the tile.The interpolated point is based on bilinear interpolations along the body surface assumed to be spherical, and along the vertical axis.
The interpolation parameters are chosen such that (u = 0, v = 0) maps to vertex v0, (u = 1, v = 0) maps to vertex v1, (u = 1, v = 1) maps to vertex v2 and (u = 0, v = 1) maps to vertex v3.
- Parameters:
u
- first interpolation parameter (should be between 0 and 1 to remain inside the tile)v
- second interpolation parameter (should be between 0 and 1 to remain inside the tile)- Returns:
- interpolated point
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getCenter
public GeodeticPoint getCenter()
Get the center point.The center points corresponds to
getInterpolatedPoint(0.5, 0.5)
- Returns:
- center point
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