/********************************************************************************************
Step2.cpp
	Jim Millard
	for CO311/Spring 2000

   Simple program that displays a 4x4 blue/red checkerboard

   Uses the ezwin API
********************************************************************************************/
#include <iostream>
#include <string>
using namespace std;

#include "ezwin.h"
#include "rect.h"

void DrawCheckerboard(SimpleWindow& W);  //required prototype

int ApiMain()
   {
   //create the primary window
   SimpleWindow W("Exercise 3.22, Step 2");
   W.Open();

   DrawCheckerboard(W);

   //wait for input prior to quitting
   char ch;
   cout << "Enter a character to continue";
   cin >> ch;

   Terminate();
   return 0;
   }

void DrawCheckerboard(SimpleWindow& W)
   {
   const float height=2., //static height of all blocks
               width =2., //static width of all blocks
               xCenter =width/2., //horizontal center of each block
               yCenter =height/2.; //vertical center of each block
   const color BaseColor = Blue,  //static color of first block
               AltColor  = Red;   //static color of alternate block

   //Draw the rectangles
   //first row
   RectangleShape R11(W, xCenter /* + width * 0 */, yCenter /* + height * (row-1) */, BaseColor, width, height);
   R11.Draw();
   RectangleShape R12(W, xCenter + width, yCenter, AltColor, width, height);
   R12.Draw();
   RectangleShape R13(W, xCenter + width*2, yCenter, BaseColor, width, height);
   R13.Draw();
   RectangleShape R14(W, xCenter + width*3, yCenter, AltColor, width, height);
   R14.Draw();

   //second row
   RectangleShape R21(W, xCenter, yCenter + height, AltColor, width, height);
   R21.Draw();
   RectangleShape R22(W, xCenter + width, yCenter + height, BaseColor, width, height);
   R22.Draw();
   RectangleShape R23(W, xCenter + width*2, yCenter + height, AltColor, width, height);
   R23.Draw();
   RectangleShape R24(W, xCenter + width*3, yCenter + height, BaseColor, width, height);
   R24.Draw();

   //third row
   RectangleShape R31(W, xCenter, yCenter + height*2, BaseColor, width, height);
   R31.Draw();
   RectangleShape R32(W, xCenter + width, yCenter + height*2, AltColor, width, height);
   R32.Draw();
   RectangleShape R33(W, xCenter + width*2, yCenter + height*2, BaseColor, width, height);
   R33.Draw();
   RectangleShape R34(W, xCenter + width*3, yCenter + height*2, AltColor, width, height);
   R34.Draw();

   //fourth row
   RectangleShape R41(W, xCenter, yCenter + height*3,AltColor,width,height);
   R41.Draw();
   RectangleShape R42(W, xCenter + width, yCenter + height*3,BaseColor, width, height);
   R42.Draw();
   RectangleShape R43(W, xCenter + width*2, yCenter + height*3,AltColor, width, height);
   R43.Draw();
   RectangleShape R44(W, xCenter + width*3, yCenter + height*3, BaseColor, width, height);
   R44.Draw();

   return;
   }//DrawCheckerboard