//---------------------------------------------------------
// Lab04
//
// Test implementation of worldType class.
//---------------------------------------------------------

#include "worldType.h"
#include <graphics.h>

int main()
{
    double x, y;      // world coordinates
    int oldColor;
    
    // This application uses two graphics windows. The first is
    // a default worldType object.
    
    worldType w1;
    
    // The second graphics window models a world that goes from
    // -5 to 5 on both axes using a graphics window that is 201
    // pixels square whose upper left corner is at (50,100) on
    // the computer screen.
   
    worldType w2(201, 201, 50, 100, -5.0, -5.0, 5.0, 5.0, "Square");
    
    //*******************************************
    //  Do some drawing on world 1
    //*******************************************
    
    // Draw a grid on world 1 with a spacing of 0.1 between grid lines.
    
    w1.setActive();
    oldColor = getcolor();
    setcolor(RED);
    x = -1.0;
    while (x < 1.05)
    {
        w1.drawLine(x, -1.0, x, 1.0);
        x = x + 0.1;
    }
    
    y = -1.0;
    while (y < 1.05)
    {
        w1.drawLine(-1.0, y, 1.0, y);
        y = y + 0.1;
    }
    setcolor(oldColor);
    
    // Draw the x-axis and the y-axis.
    
    w1.drawLine(0.0, -1.0, 0.0, 1.0);
    w1.drawLine(-1.0, 0.0, 1.0, 0.0);
    
    // Draw a 1.2 x 0.9 rectangle centered on (0.1, -0.2) in the default world.
    
    w1.moveTo(-0.5,  0.25);
    w1.lineTo( 0.7,  0.25);
    w1.lineTo( 0.7, -0.65);
    w1.lineTo(-0.5, -0.65);
    w1.lineTo(-0.5,  0.25);
    
    //*******************************************
    //  Now, do some drawing on world 2
    //*******************************************
    
    // Draw a grid on world 2 with a spacing of 1 between grid lines.
    
    w2.setActive();
    oldColor = getcolor();
    setcolor(RED);
    x = -5.0;
    while (x < 5.05)
    {
        w2.drawLine(x, -5.0, x, 5.0);
        x = x + 1.0;
    }
    
    y = -5.0;
    while (y < 5.05)
    {
        w2.drawLine(-5.0, y, 5.0, y);
        y = y + 1.0;
    }
    setcolor(oldColor);
    
    // Draw the x-axis and the y-axis.
    
    w2.drawLine(0.0, -5.0, 0.0, 5.0);
    w2.drawLine(-5.0, 0.0, 5.0, 0.0);
    
    // Draw a 3.0 x 3.0 square centered at (-2.4, 3.1).

    w2.setActive();
    w2.moveTo(-3.9, 4.6);
    w2.lineTo(-0.9, 4.6);
    w2.lineTo(-0.9, 1.6);
    w2.lineTo(-3.9, 1.6);
    w2.lineTo(-3.9, 4.6);
    
    // Wait for the user to tap a key (with world 2 active).
    
    getch();
    closegraph(); // Close all graphic windows
    return 0;
}