Texture Donut Chart

[Ruby On Rails Version - Controller] app/controllers/texturedonut_controller.rb

require("chartdirector")

class TexturedonutController < ApplicationController

    def index()
        @title = "Texture Donut Chart"
        @ctrl_file = File.expand_path(__FILE__)
        @noOfCharts = 1
        render :template => "templates/chartview"
    end

    #
    # Render and deliver the chart
    #
    def getchart()
        # The data for the pie chart
        data = [18, 45, 28]

        # The labels for the pie chart
        labels = ["Marble", "Wood", "Granite"]

        # The icons for the sectors
        texture = ["marble3.png", "wood.png", "rock.png"]

        # Create a PieChart object of size 400 x 330 pixels, with a metallic green (88EE88)
        # background, black border and 1 pixel 3D border effect
        c = ChartDirector::PieChart.new(400, 330, ChartDirector::metalColor(0x88ee88), 0x000000, 1)

        # Set directory for loading images to current script directory
        c.setSearchPath(File.dirname(__FILE__))

        # Set donut center at (200, 160), and outer/inner radii as 120/60 pixels
        c.setDonutSize(200, 160, 120, 60)

        # Add a title box using 15pt Times Bold Italic font and metallic deep green (008000)
        # background color
        c.addTitle("Material Composition", "timesbi.ttf", 15).setBackground(
            ChartDirector::metalColor(0x008000))

        # Set the pie data and the pie labels
        c.setData(data, labels)

        # Set the colors of the sectors to the 3 texture patterns
        c.setColor(ChartDirector::DataColor + 0, c.patternColor2(texture[0]))
        c.setColor(ChartDirector::DataColor + 1, c.patternColor2(texture[1]))
        c.setColor(ChartDirector::DataColor + 2, c.patternColor2(texture[2]))

        # Draw the pie in 3D with a 3D depth of 30 pixels
        c.set3D(30)

        # Use 12pt Arial Bold Italic as the sector label font
        c.setLabelStyle("arialbi.ttf", 12)

        # Output the chart
        send_data(c.makeChart2(ChartDirector::PNG), :type => "image/png", :disposition => "inline")

    end

end

[Ruby On Rails Version - View] app/views/templates/chartview.html.erb

<html>
<body style="margin:5px 0px 0px 5px">

<!-- Title -->
<div style="font-size:18pt; font-family:verdana; font-weight:bold">
    <%= @title %>
</div>
<hr style="border:solid 1px #000080" />

<!-- Source Code Listing Link -->
<div style="font-size:9pt; font-family:verdana; margin-bottom:1.5em">
    <%= link_to "Source Code Listing", 
        :controller => "cddemo", :action => "viewsource",
        :ctrl_file => @ctrl_file, :view_file => File.expand_path(__FILE__) %>
</div>

<!-- Create one or more IMG tags to display the demo chart(s) -->
<% 0.upto(@noOfCharts - 1) do |i| %>
    <img src="<%= url_for(:action => "getchart", :img => i) %>">
<% end %>

</body>
</html>

[Command Line Version] rubydemo/texturedonut.rb

#!/usr/bin/env ruby
require("chartdirector")

# The data for the pie chart
data = [18, 45, 28]

# The labels for the pie chart
labels = ["Marble", "Wood", "Granite"]

# The icons for the sectors
texture = ["marble3.png", "wood.png", "rock.png"]

# Create a PieChart object of size 400 x 330 pixels, with a metallic green (88EE88) background,
# black border and 1 pixel 3D border effect
c = ChartDirector::PieChart.new(400, 330, ChartDirector::metalColor(0x88ee88), 0x000000, 1)

# Set donut center at (200, 160), and outer/inner radii as 120/60 pixels
c.setDonutSize(200, 160, 120, 60)

# Add a title box using 15pt Times Bold Italic font and metallic deep green (008000) background
# color
c.addTitle("Material Composition", "timesbi.ttf", 15).setBackground(ChartDirector::metalColor(
    0x008000))

# Set the pie data and the pie labels
c.setData(data, labels)

# Set the colors of the sectors to the 3 texture patterns
c.setColor(ChartDirector::DataColor + 0, c.patternColor2(texture[0]))
c.setColor(ChartDirector::DataColor + 1, c.patternColor2(texture[1]))
c.setColor(ChartDirector::DataColor + 2, c.patternColor2(texture[2]))

# Draw the pie in 3D with a 3D depth of 30 pixels
c.set3D(30)

# Use 12pt Arial Bold Italic as the sector label font
c.setLabelStyle("arialbi.ttf", 12)

# Output the chart
c.makeChart("texturedonut.png")