



This example demonstrates the effects of various surface lighting parameters, configured using SurfaceChart.setLighting.
ChartDirector 5.1 (Ruby Edition)
Surface Lighting
Source Code Listing
require("chartdirector") class SurfacelightingController < ApplicationController def index() @title = "Surface Lighting" @ctrl_file = File.expand_path(__FILE__) @noOfCharts = 4 render :template => "templates/chartview" end # # Render and deliver the chart # def getchart() # The x and y coordinates of the grid dataX = [-10, -8, -6, -4, -2, 0, 2, 4, 6, 8, 10] dataY = [-10, -8, -6, -4, -2, 0, 2, 4, 6, 8, 10] # The values at the grid points. In this example, we will compute the values using # the formula z = x * sin(y) + y * sin(x). dataZ = Array.new((dataX.length) * (dataY.length)) 0.upto(dataY.length - 1) do |yIndex| y = dataY[yIndex] 0.upto(dataX.length - 1) do |xIndex| x = dataX[xIndex] dataZ[yIndex * (dataX.length) + xIndex] = x * Math.sin(y) + y * Math.sin(x ) end end # Create a SurfaceChart object of size 380 x 400 pixels, with white (ffffff) # background and grey (888888) border. c = ChartDirector::SurfaceChart.new(380, 400, 0xffffff, 0x888888) # Demonstrate various lighting parameters if params["img"] == "0" c.addTitle( "Default Lighting<*br*><*size=10*>Ambient = 0.5, Diffuse = 0.5, " \ "Specular = 1, Shininess = 8") elsif params["img"] == "1" c.addTitle( "Matte (Non-Glossy) Lighting<*br*><*size=10*>Ambient = 0.5, Diffuse = " \ "0.5, Specular = 0, Shininess = 0") c.setLighting(0.5, 0.5, 0, 0) elsif params["img"] == "2" c.addTitle( "Flat Lighting<*br*><*size=10*>Ambient = 1, Diffuse = 0, Specular = 0, " \ "Shininess = 0") c.setLighting(1, 0, 0, 0) else c.addTitle( "Strong Glossy Lighting<*br*><*size=10*>Ambient = 0.5, Diffuse = 0.5, " \ "Specular = 4, Shininess = 32") c.setLighting(0.5, 0.5, 4, 32) end # Set the center of the plot region at (175, 200), and set width x depth x height # to 200 x 200 x 160 pixels c.setPlotRegion(175, 200, 200, 200, 160) # Set the plot region wall thichness to 5 pixels c.setWallThickness(5) # Set the elevation and rotation angles to 45 and 60 degrees c.setViewAngle(45, 60) # Set the perspective level to 35 c.setPerspective(35) # Set the data to use to plot the chart c.setData(dataX, dataY, dataZ) # Spline interpolate data to a 50 x 50 grid for a smooth surface c.setInterpolation(50, 50) # Set contour lines to semi-transparent black (c0000000) c.setContourColor(0xc0000000) # Output the chart send_data(c.makeChart2(ChartDirector::JPG), :type => "image/jpeg", :disposition => "inline") end end |
<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> |
#!/usr/bin/env ruby require("chartdirector") def createChart(img) # The x and y coordinates of the grid dataX = [-10, -8, -6, -4, -2, 0, 2, 4, 6, 8, 10] dataY = [-10, -8, -6, -4, -2, 0, 2, 4, 6, 8, 10] # The values at the grid points. In this example, we will compute the values # using the formula z = x * sin(y) + y * sin(x). dataZ = Array.new((dataX.length) * (dataY.length)) 0.upto(dataY.length - 1) do |yIndex| y = dataY[yIndex] 0.upto(dataX.length - 1) do |xIndex| x = dataX[xIndex] dataZ[yIndex * (dataX.length) + xIndex] = x * Math.sin(y) + y * Math.sin( x) end end # Create a SurfaceChart object of size 380 x 400 pixels, with white (ffffff) # background and grey (888888) border. c = ChartDirector::SurfaceChart.new(380, 400, 0xffffff, 0x888888) # Demonstrate various lighting parameters if img == "0" c.addTitle( "Default Lighting<*br*><*size=10*>Ambient = 0.5, Diffuse = 0.5, " \ "Specular = 1, Shininess = 8") elsif img == "1" c.addTitle( "Matte (Non-Glossy) Lighting<*br*><*size=10*>Ambient = 0.5, Diffuse = " \ "0.5, Specular = 0, Shininess = 0") c.setLighting(0.5, 0.5, 0, 0) elsif img == "2" c.addTitle( "Flat Lighting<*br*><*size=10*>Ambient = 1, Diffuse = 0, Specular = " \ "0, Shininess = 0") c.setLighting(1, 0, 0, 0) else c.addTitle( "Strong Glossy Lighting<*br*><*size=10*>Ambient = 0.5, Diffuse = 0.5, " \ "Specular = 4, Shininess = 32") c.setLighting(0.5, 0.5, 4, 32) end # Set the center of the plot region at (175, 200), and set width x depth x height # to 200 x 200 x 160 pixels c.setPlotRegion(175, 200, 200, 200, 160) # Set the plot region wall thichness to 5 pixels c.setWallThickness(5) # Set the elevation and rotation angles to 45 and 60 degrees c.setViewAngle(45, 60) # Set the perspective level to 35 c.setPerspective(35) # Set the data to use to plot the chart c.setData(dataX, dataY, dataZ) # Spline interpolate data to a 50 x 50 grid for a smooth surface c.setInterpolation(50, 50) # Set contour lines to semi-transparent black (c0000000) c.setContourColor(0xc0000000) # Output the chart c.makeChart("surfacelighting%s.jpg" % img) end createChart("0") createChart("1") createChart("2") createChart("3") |