Class: SVGComponents

Inherits:
Object
  • Object
show all
Defined in:
lib/teaching_printables/svg/svg_components.rb

Constant Summary collapse

SVG_VERSION = 
"1.1"
DEFAULT_LINE =

“<line x1="#SVGComponents.x1x1.to_s" x2="#SVGComponents.x2x2.to_s" y1="#SVGComponents.y1y1.to_s" y2="#SVGComponents.y2y2.to_s" stroke="#stroke" stroke-width="#SVGComponents.stroke_widthstroke_width.to_s"/>”

end

{
  x1: 0,
  x2: 100,
  y1: 0,
  y2: 100,
  stroke: "black",
  stroke_width: 1,
  stroke_dasharray: "none"
}
DEFAULT_ARROW = 
{
  xpos: 0,
  ypos: 0,
  base: 10,
  height: 10,
  fill: "black",
  stroke: "black",
  stroke_width: 1,
}
DEFAULT_CIRCLE = 
{
  xpos: 0,
  ypos: 0,
  radius: 2,
  fill: "black",
  stroke: "black",
  stroke_width: 1,
}
DEFAULT_LABEL = 
{
  xpos: 0,
  ypos: 0,
  text: "Label Text",
  font_size: 12,
  text_anchor: "middle",
  fill: "black"
}
DEFAULT_RECTANGLE = 
{
  xpos: 0,
  ypos: 0,
  width: 100,
  height: 100,
  stroke: "black",
  fill: "transparent",
  stroke_width: 2
}

Class Method Summary collapse

Class Method Details

.circle(options = {}) ⇒ Object 



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# File 'lib/teaching_printables/svg/svg_components.rb', line 60

def circle(options={})
  options = DEFAULT_CIRCLE.merge(options)
  "<circle cx=\"#{options[:xpos].to_s}\" cy=\"#{options[:ypos].to_s}\" r=\"#{options[:radius].to_s}\" stroke=\"#{options[:stroke]}\" stroke-width=\"#{options[:stroke_width].to_s}\" fill=\"#{options[:fill]}\" />"
end

.footer ⇒ Object 



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# File 'lib/teaching_printables/svg/svg_components.rb', line 90

def footer
  "</svg>"
end

.header(width, height) ⇒ Object 



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# File 'lib/teaching_printables/svg/svg_components.rb', line 6

def header(width,height)
  "<svg version=\"#{SVG_VERSION}\"
  baseProfile=\"full\"
  width=\"#{width.to_s}\" height=\"#{height.to_s}\"
  xmlns=\"http://www.w3.org/2000/svg\">".gsub("\n",'')
end

.label(options = {}) ⇒ Object 



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# File 'lib/teaching_printables/svg/svg_components.rb', line 73

def label(options={})
  "<text x=\"#{options[:xpos].to_s}\" y=\"#{options[:ypos].to_s}\" font-size=\"#{options[:font_size].to_s}\" text-anchor=\"#{options[:text_anchor]}\" fill=\"#{options[:fill]}\">#{options[:text]}</text>"
end

.left_arrowhead(options = {}) ⇒ Object

Create left arrowhead with apex at xpos,ypos and specified base and height



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# File 'lib/teaching_printables/svg/svg_components.rb', line 42

def left_arrowhead(options={})
  options = DEFAULT_ARROW.merge(options)
  "<polygon points=\"#{options[:xpos]+options[:height]},#{options[:ypos]+options[:height]/2} #{options[:xpos]+options[:height]},#{options[:ypos]-options[:height]/2} #{options[:xpos]},#{options[:ypos]}\" style=\"fill:#{options[:fill]};stroke:#{options[:stroke]};stroke-width:#{options[:stroke_width].to_s}\"/>"
end

.line(options = {}) ⇒ Object 



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# File 'lib/teaching_printables/svg/svg_components.rb', line 26

def line(options={})
  options = DEFAULT_LINE.merge(options)
  "<line x1=\"#{options[:x1].to_s}\" x2=\"#{options[:x2].to_s}\" y1=\"#{options[:y1].to_s}\" y2=\"#{options[:y2].to_s}\" stroke=\"#{options[:stroke]}\" stroke-width=\"#{options[:stroke_width].to_s}\" stroke-dasharray=\"#{options[:stroke_dasharray]}\"/>"
end

.quad_ruled_grid(m_rows, n_columns) ⇒ Object 



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# File 'lib/teaching_printables/svg/svg_components.rb', line 94

def quad_ruled_grid(m_rows,n_columns)

  points_per_box = 40
  
  width = n_columns * points_per_box;
  height = m_rows * points_per_box;
  
  str = header(n_columns*points_per_box,m_rows*points_per_box)
  
  
  # make vertical lines
  for n in (0..n_columns)
    verticle_line_opts = {
      x1: n*points_per_box,
      x2: n*points_per_box,
      y1: 0,
      y2: height,
      stroke: "gray",
      stroke_width: 0.5,
      stroke_dasharray: "none"
    }
    str << line(verticle_line_opts)
  end
  
  # make horizontal lines
  for m in (0..m_rows)
    horizontal_line_opts = {
      x1: 0,
      x2: width,
      y1: m*points_per_box,
      y2: m*points_per_box,
      stroke: "gray",
      stroke_width: 0.5,
      stroke_dasharray: "none"
    }
    str << line(horizontal_line_opts)
  end
  
  str<<footer

  
end

.rectangle(options = {}) ⇒ Object 



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# File 'lib/teaching_printables/svg/svg_components.rb', line 86

def rectangle(options={})
  "<rect x=\"#{options[:xpos].to_s}\" y=\"#{options[:ypos].to_s}\" width=\"#{options[:width].to_s}\" height=\"#{options[:height].to_s}\" stroke=\"#{options[:stroke]}\" fill=\"#{options[:fill]}\" stroke-width=\"#{options[:stroke_width].to_s}\"/>"
end

.right_arrowhead(options = {}) ⇒ Object 



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# File 'lib/teaching_printables/svg/svg_components.rb', line 47

def right_arrowhead(options={})
  options = DEFAULT_ARROW.merge(options)
  "<polygon points=\"#{options[:xpos]-options[:height]},#{options[:ypos]+options[:height]/2} #{options[:xpos]-options[:height]},#{options[:ypos]-options[:height]/2} #{options[:xpos]},#{options[:ypos]}\" style=\"fill:#{options[:fill]};stroke:#{options[:stroke]};stroke-width:#{options[:stroke_width].to_s}\"/>"
end