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Contents
# -----------------------------------------------------------------------------
# Draws a circle with ticks
#
# Author:: Fernand Galiana
# -----------------------------------------------------------------------------
require 'ziya/gauges/support/radial_base'
module Ziya::Gauges::Support
class RadialTicks < RadialBase
has_attribute :length, :thickness
# overrides flatten to generate a series of radial tick marks
def flatten( xml )
i = start_angle
while( i <= end_angle ) do
angle = deg2rad( i )
hash = { :x1 => (x + Math::sin( angle ) * radius).to_i,
:y1 => (y - Math::cos( angle ) * radius).to_i,
:x2 => (x + Math::sin( angle ) * (radius + length)).to_i,
:y2 => (y - Math::cos( angle ) * (radius + length)).to_i,
:thickness => thickness,
:color => color }
xml.line( hash )
i += (end_angle-start_angle)/(ticks-1)
end
end
end
end
Version data entries
22 entries across 22 versions & 2 rubygems