Lab

// Dalton Dove - CSE20311 - lab11
// 12/02/2019
// This program displays shapes at the mouse cursor depending on input

#include <iostream>
#include <cmath>
using namespace std;
#include "gfx.h"

void drawSquare(int);
void drawCircle(int);
void drawTriangle(int);
void drawPolygon(int, int);

int main()
{
    int wd = 500;
    int ht = 400;
    int SIZE = 50;
    bool loop = true;
    int val = 0;
    int sides;


    gfx_open(wd, ht, "Symbol");

    while(loop == true){
        val = (int)gfx_wait();

        if(val == 1){
           drawSquare(SIZE);
        }
        else if(val == 99){
            drawCircle(SIZE);
        }
        else if(val == 116){
            drawTriangle(SIZE);
        }
        else if(val > 50 && val < 58){
            sides = val - 48;
            drawPolygon(SIZE, sides);
        }
        else if(val == 27){
            gfx_clear();
        }
        else if(val == 113){
            loop = false;
        }
    }
    return 0;
}

void drawSquare(int SIZE)
{
    int xm = gfx_xpos();
    int ym = gfx_ypos();
    gfx_color(0, 0, 255);
     // Right Side Square
    gfx_line(xm+SIZE/2, ym+SIZE/2, xm+SIZE/2, ym-SIZE/2);
    // Left Side Square
    gfx_line(xm-SIZE/2, ym+SIZE/2, xm-SIZE/2, ym-SIZE/2);
    // Top Side Square
    gfx_line(xm+SIZE/2, ym+SIZE/2, xm-SIZE/2, ym+SIZE/2);
    // Bottom Side Square
    gfx_line(xm+SIZE/2, ym-SIZE/2, xm-SIZE/2, ym-SIZE/2);
}

void drawCircle(int SIZE)
{
    int xm = gfx_xpos();
    int ym = gfx_ypos();
    gfx_color(255, 255, 255);
    gfx_circle(xm, ym, SIZE/2);
}

void drawTriangle(int SIZE)
{
    int xm = gfx_xpos();
    int ym = gfx_ypos();
    gfx_color(0, 255, 0);
    // Top Side Triangle
    gfx_line(xm+SIZE/2, ym-SIZE/2, xm-SIZE/2, ym-SIZE/2);
    // Right Side Triangle
    gfx_line(xm+SIZE/2, ym-SIZE/2, xm, ym+SIZE/2);
    // Left Side Triangle
    gfx_line(xm-SIZE/2, ym-SIZE/2, xm, ym+SIZE/2);

}

void drawPolygon(int SIZE, int sides)
{
    double pi = 3.1415926535897;
    int xm = gfx_xpos();
    int ym = gfx_ypos();
    gfx_color(128, 0, 128);
    int radius = SIZE/2;

    for(int i = 0; i < sides; i++){
        gfx_line(radius * cos((2 * pi * i)/sides) + xm, radius * sin((2 * pi * i)/sides) + ym, radius * cos((2 * pi * (i+1))/sides) + xm, radius * sin((2 * pi * (i+1))/sides) + ym);
    }
}