Package gov.nih.mipav.model.algorithms

Interface ContourPlot.Glyph

Enclosing class:
ContourPlot
public static interface ContourPlot.Glyph
The Glyph interface has to be implemented by a class that realizes a graphical representation of a 2D point (e.g. a cross or a circle). The interface declares the
invalid reference 
#fillVertexArray(VertexArray)
method that fills a vertex array so that it contains the vertices for the shape of the glyph. The other methods describe how the glyph has to be drawn by the
invalid reference 
PointsRenderer
.
Author:
hageldave

  • Method Details

    • numVertices

      int numVertices()
      Returns:
      number of vertices this glyph has.

    • primitiveType

      int primitiveType()
      Returns:
      the GL primitive to be used for drawing. For example
      invalid reference 
      GL11#GL_LINES
      or
      invalid reference 
      GL11#GL_TRIANGLE_STRIP

    • pixelSize

      int pixelSize()
      Returns:
      the size in pixels this glyph should be scaled to.

    • useElementsDrawCall

      boolean useElementsDrawCall()
      Returns:
      true if an elements draw call is to be used e.g.
      invalid reference 
      GL31#glDrawElementsInstanced(int, int, int, long, int)
      , false if an arrays draw call is to be used e.g.
      invalid reference 
      GL31#glDrawArraysInstanced(int, int, int, int)
      .
      Of course an elements draw call can only be used if the VertexArray has indices, i.e. the ELEMENT_ARRAY_BUFFER is set. A ContourPlot.Glyph implementation has to guarantee for that.

    • createPDFElement

      org.apache.pdfbox.pdmodel.edit.PDPageContentStream createPDFElement(org.apache.pdfbox.pdmodel.edit.PDPageContentStream contentStream)
      Creates PDF elements that will be appended to the content stream. This is used to create an SVG symbol. The isFilled() method determines whether the "fill" or "stroke" attribute is used for coloring an instance of the symbol.
      Parameters:
      contentStream - content stream that the glyph will be added to
      Returns:
      content stream that holds the glyph written to the document

    • drawFallback

      void drawFallback(Graphics2D g, float scaling)
      Fallback rendering path when OpenGL is not available. Draws this glyph to the specified Graphics2D object with the specified scaling.
      Parameters:
      g - graphics to draw to
      scaling - factor by which to scale this glyph

    • glyphName

      String glyphName()
      Returns:
      name of this Glyph, used as part of an SVG identifier for the corresponding symbol definition.

    • isFilled

      boolean isFilled()
      Returns:
      whether this glyph is filled or not, e.g. a cross is not filled but a circle can.