SegmentLonLat

Planet segment Web Mercator tile class that stored and rendered with quad tree.

Constructor

new SegmentLonLat()

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Extends

Members

_extent :Extent

Geographical extent.

Type:
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bbox :Box

Segment bounding box.

Type:
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bsphere :Sphere

Segment bounding sphere

Type:
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gridSize :number

Vertices grid size.

Type:
  • number
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handler :Handler

WebGl handler pointer.

Type:
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initialized :boolean

Segment is ready to create plain vertices.

Type:
  • boolean
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materials :Array.<planetSegment.Material>

Texture materials array.

Type:
  • Array.<planetSegment.Material>
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node :quadTree.Node

Quad tree node of the segment.

Type:
  • quadTree.Node
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normalMapReady :boolean

Normal map is allready made.

Type:
  • boolean
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parentNormalMapReady :boolean

Parent normal map is made allready(optimization parameter).

Type:
  • boolean
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plainReady :boolean

Plain segment vertices was created.

Type:
  • boolean
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planet :Planet

Planet pointer.

Type:
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terrainExists :boolean

Terrain existing flag.

Type:
  • boolean
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terrainIsLoading :boolean

Terrain is loading now flag.

Type:
  • boolean
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terrainReady :boolean

Terrain is allready applied flag.

Type:
  • boolean
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tileX :number

Horizontal tile index.

Type:
  • number
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tileY :number

Vertical tile index.

Type:
  • number
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tileZoom :number

Tile zoom index.

Type:
  • number
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Methods

_freeCache()

Removes cache records.

Overrides
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(protected) _getLayerExtentOffset(layer)

Parameters:
NameTypeDescription
layer
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To Do
  • simplify layer._extentMerc in layer.getNativeExtent(this)

_setExtentLonLat()

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acceptForRendering(camera) → {boolean}

Returns that segment good for rendering with camera by current lod ratio.

Parameters:
NameTypeDescription
cameraCamera

Camera object.

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Returns:
Type: 
boolean

clearSegment()

Clear but not destroy segment data.

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createBoundsByExtent()

Creates bound volumes by segment geographical extent.

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deleteBuffers()

Delete segment gl buffers.

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deleteElevations()

Delete elevation data.

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deleteMaterials()

Delete materials.

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destroySegment()

Clear and destroy all segment data.

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elevationsExists(elevations)

Terrain obtained from server.

Parameters:
NameTypeDescription
elevationsFloat32Array

Elevation data.

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elevationsNotExists()

Terrain is not obtained or not exists on the server.

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getEntityTerrainPoint(entity, res, normalopt) → {Vec3}

Returns entity terrain point.

Parameters:
NameTypeAttributesDescription
entityEntity

Entity.

resVec3

Point coordinates.

normalVec3<optional>

Terrain point normal.

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Returns:
Type: 
Vec3

getMaterialByLayer(layer) → {planetSegment.Material}

Gets specific layer material.

Parameters:
NameTypeDescription
layerLayer

Layer object.

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Returns:
  • Segment material.
Type: 
planetSegment.Material

getTerrainPoint(xyz, insideSegmentPosition, resopt, normalopt) → {number}

Returns distance from object to terrain coordinates and terrain point that calculates out in the res parameter.

Parameters:
NameTypeAttributesDescription
xyzVec3

Cartesian object position.

insideSegmentPositionLonLat

Geodetic object position.

resVec3<optional>

Result cartesian coordinates on the terrain.

normalVec3<optional>

Terrain point normal.

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Returns:
Type: 
number

loadTerrain(forceLoading)

Parameters:
NameTypeDescription
forceLoadingboolean
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projectNative(lonlat) → {LonLat}

Project wgs86 to segment native projection.

Parameters:
NameTypeDescription
lonlatLonLat

Coordinates to project.

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Returns:
Type: 
LonLat