Class: CTioga2::Graphics::Elements::Histogram

Inherits:
Curve2D show all
Includes:
Log, Dobjects
Defined in:
lib/ctioga2/graphics/elements/histogram.rb

Overview

A histogram

Constant Summary

Constants inherited from TiogaElement

TiogaElement::StyleBaseOptions

Instance Attribute Summary collapse

Attributes inherited from Curve2D

#function, #path_elements

Attributes inherited from PlotBasedElement

#curve_style, #dataset

Attributes inherited from TiogaElement

#clipped, #depth, #hidden, #location, #object_classes, #object_id, #object_parent, #parent

Instance Method Summary collapse

Methods included from Log

context, counts, debug, error, fatal, #format_exception, #identify, info, init_logger, log_to, logger, set_level, #spawn, warn

Methods inherited from Curve2D

#can_clip?, #draw_errorbars, #draw_fill, #draw_markers, #draw_path, #get_axes, #real_do

Methods inherited from PlotBasedElement

#clipped, #depth, #location

Methods inherited from TiogaElement

all_styles, base_style, #check_styled, define_style, #do, find_object, find_objects, #get_style, #has_style?, inherited, #inspect, register_object, register_style, #setup_style, #style_class, style_class, style_name, #style_name, styled_classes, #update_style

Constructor Details

#initialize(dataset, style, hstyle) ⇒ Histogram

Returns a new instance of Histogram.



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# File 'lib/ctioga2/graphics/elements/histogram.rb', line 41

def initialize(dataset, style, hstyle)
  super(dataset, style)
  @histogram_style = hstyle
end

Instance Attribute Details

#histogram_style ⇒ Object

The histogram style at the moment of the creation of the object.



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# File 'lib/ctioga2/graphics/elements/histogram.rb', line 38

def histogram_style
  @histogram_style
end

Instance Method Details

#get_boundaries ⇒ Object 



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# File 'lib/ctioga2/graphics/elements/histogram.rb', line 46

def get_boundaries
  ry = modified_yvalues
  bnds =  Types::Boundaries.bounds(@function.x, ry)
  if ! @within_gb
    base = get_base

    nb = bnds.dup
    nb.bottom = base
    nb.top = base

    # include the width ?
  

    bnds.extend(nb)
  end
  return bnds
end

#make_closed_path(t, close_type = nil) ⇒ Object

The algorithms for closing the path just look ugly for histograms that are offset from something. The reasoning does not apply here.



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# File 'lib/ctioga2/graphics/elements/histogram.rb', line 92

def make_closed_path(t, close_type = nil)
  org = get_cached_organization
  if org[:has_offsets][self]
    make_path(t)
  else
    super
  end
end

#make_path(t) ⇒ Object

First, a very naive way.



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# File 'lib/ctioga2/graphics/elements/histogram.rb', line 67

def make_path(t)
  base = get_base

  w, ho, yo = *get_properties(t)

  org = get_cached_organization
  h_o = org[:has_offsets][self]

  for x,y in @function
    xl = x + ho
    xr = xl + w
    b = yo[x]
    t.move_to_point(xl, base+b)
    t.append_point_to_path(xl, y+b)
    t.append_point_to_path(xr, y+b)
    t.append_point_to_path(xr, base+b)
    if h_o               # close !
      t.move_to_point(xl, base+b)
    end
  end
end