Package uk.ac.starlink.ttools.plot2.layer

Class SkyTileRenderer

java.lang.Object
uk.ac.starlink.ttools.plot2.layer.SkyTileRenderer
public abstract class SkyTileRenderer extends Object
Defines the strategy for rendering HEALPix tiles to a graphics context.
Since:
16 Sep 2016
Author:
Mark Taylor

  • Constructor Details

    • SkyTileRenderer

      public SkyTileRenderer()

  • Method Details

    • extendAuxRange

      public abstract void extendAuxRange(Ranger ranger, BinList.Result binResult)
      Modifies the range of aux values found within a given surface.
      Parameters:
      ranger - range object to be modified
      binResult - tile bin contents

    • renderBins

      public abstract void renderBins(Graphics g, BinList.Result binResult, Shader shader, Scaler scaler)
      Performs the rendering of a prepared bin list on a graphics surface.
      Parameters:
      g - graphics context
      binResult - histogram containing sky pixel values
      shader - colour shading
      scaler - value scaling

    • createRenderer

      public static SkyTileRenderer createRenderer(SkySurface surface, Rotation rotation, int viewLevel, double binFactor)
      Returns a SkyTileRenderer suitable for use on a given sky surface.
      Parameters:
      surface - sky surface
      rotation - view rotation state
      viewLevel - HEALPix level for view
      binFactor - factor by which all bin values should be multiplied
      Returns:
      tile renderer

    • paintBins

      public static void paintBins(Graphics g, BinList.Result binResult, double binFactor, SkySurface surface, SkyPixer skyPixer, Shader shader, Scaler scaler)
      Given a prepared data structure, paints the results it represents onto a graphics context appropriate for this drawing.
      Parameters:
      g - graphics context
      binResult - histogram containing sky pixel values
      binFactor - factor by which all bin values must be multiplied
      surface - plot surface
      skyPixer - maps sky positions to HEALPix indices
      shader - colour shading
      scaler - value scaling