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Byron's CSC212 Web Site
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Programming Challenge Archive
Application Architecture
Global Procedural Architecture
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\subsubsubsection
JavaApplication --
Percent White
// General Information
// ---------------------------------------------------
// File: DieAppGPAA.java
// Type: java application file
// Date: Mon Oct 23, 2000
// Name: Byron Bahr
// Line: Die Area - Global Procedural Applic Arch
// Application Description
// ---------------------------------------------------
/*
The "Standard Die" Area Problem
This program finds the white area of a Die when
the Diameter of the Dots is 1/5 the Edge Length.
Programming Approach
The program will read a value corresponding to
n, the edge length of the Die. It will compute
the white area of the die and print it.
Featured Application Architecture
Global Procedural
*/
// Required Packages
// ---------------------------------------------------
import blue.io.*;
import blue.math.*;
import blue.shapes.*;
import java.lang.*;
// Application Class
// ---------------------------------------------------
class DieAppGPAA
{
// Declare variables
// Nr of Die Faces
static private final int nrFaces = 6;
// Nr of Die Dots
static private final int nrDots = 21;
// Define the diameter of a Dot
static private double diameter;
// Define the edge of the Die
static private double edge;
// Define the face of the Die
static private Square face;
// Define the Dots on the Die
static private Circle dot;
// Define the total area of the Die
static private double totalArea;
// Define the white area of the Die
static private double whiteArea;
// Define the black area of the Die
static private double blackArea;
// Define the percent white area of the Die
static private double whitePercent;
// The Main Method
static public void main (String args[])
{
establishDieDimensions();
createFaceAndDot();
computeAreas();
computeWhitePercent();
displayWhitePercent();
}
// Other Methods
static private void establishDieDimensions()
{
// Enter the Die Dimensions
IO.print("The Die Edge Length? ");
edge = IO.read_double();
}
static private void createFaceAndDot()
{
// Create the Die Face and Dot
diameter = (edge / 5);
face = new Square(edge);
dot = new Circle(diameter/2);
}
static private void computeAreas()
{
// Compute the Die Areas
totalArea = face.area() * nrFaces;
blackArea = dot.area() * nrDots;
whiteArea = totalArea - blackArea;
}
static private void computeWhitePercent()
{
// Compute the White Percentage
whitePercent = (whiteArea / totalArea) * 100;
}
static private void displayWhitePercent()
{
// Print the White Percent of the Die
IO.print("The Die is ");
IO.print(whitePercent);
IO.println(" percent white.");
/*
IO.println("The black area is " + blackArea);
IO.println("The white area is " + whiteArea);
IO.println("The total area is " + totalArea);
*/
}
}
// Demo
// ---------------------------------------------------
/*
The Die Edge Length? 1.79
The Die is 89.00442571243572 percent white.
The edge length? 5.43
The Die is 89.00442571243572 percent white.
*/
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