skaliranje

#include <bits/stdc++.h>
#include <graphics.h>
#define N 10

using namespace std;

struct tocka
{
    int x;
    int y;
};

struct lik
{
    tocka tocke[N];
    int brTocaka = 0;
};

void unosTocaka(lik *p)
{
    for(int i=0;i<N;i++)
    {
        cin>>(*(p)).tocke[i].x;
        if((*(p)).tocke[i].x < 0)
        {
            printf("Prekid unosa\n");
            break;
        }

        cin>>(*(p)).tocke[i].y;
        if((*(p)).tocke[i].y < 0)
        {
            printf("Prekid unosa\n");
            break;
        }
        (*(p)).brTocaka++;
        printf("[%d] Unesena tocka: [%d, %d]\n",(*(p)).brTocaka, (*(p)).tocke[i].x,(*(p)).tocke[i].y);
    }
}

void crtanje(lik *p)
{
    int x = (*(p)).tocke[0].x;
    int y = (*(p)).tocke[0].y;
    moveto(x,y);
    setfillstyle(SOLID_FILL,RED);
    circle(x,y,5);
    floodfill(x,y,15);
    for(int i = 1; i<(*(p)).brTocaka;i++)
    {
        int x2 = (*(p)).tocke[i].x;
        int y2 = (*(p)).tocke[i].y;
        setfillstyle(SOLID_FILL,RED);
        circle(x2,y2,5);
        floodfill(x2,y2,15);
        lineto(x2,y2);
        moveto(x2,y2);
    }
}

void crtanjeSvih(lik *p)
{
    for(int i=0;i<N;i++)
    {
        crtanje(p);
    }
}

void skaliraj(lik *p, int postotak)
{
    float scalar;

    scalar = (postotak / 100.0f);

    int pocX = (*(p)).tocke[0].x;
    int pocY = (*(p)).tocke[0].y;

    int x = (*(p)).tocke[0].x * scalar;
    int y = (*(p)).tocke[0].y * scalar;

    float distX = pocX-x;
    float distY = pocY-y;
    x += distX;
    y += distY;
    moveto(x,y);
    setfillstyle(SOLID_FILL,GREEN);
    circle(x,y,6);
    floodfill(x,y,15);
    for(int i = 1; i<(*(p)).brTocaka;i++)
    {
        int x2 = (*(p)).tocke[i].x * scalar;
        int y2 = (*(p)).tocke[i].y * scalar;
        x2 += distX;
        y2 += distY;
        setfillstyle(SOLID_FILL,GREEN);
        circle(x2,y2,6);
        floodfill(x2,y2,15);
        lineto(x2,y2);
        moveto(x2,y2);
    }
}

int main()
{
    lik likovi[10];
    initwindow(1000,1000);
    /*
    for(int i=0;i<1;i++)
    {
        unosTocaka(&likovi[i]);
    }*/
    //unosTocaka(&likovi[0]);

    likovi[0].tocke[0].x = 100;
    likovi[0].tocke[0].y = 100;
    likovi[0].tocke[1].x = 200;
    likovi[0].tocke[1].y = 100;
    likovi[0].tocke[2].x = 200;
    likovi[0].tocke[2].y = 200;
    likovi[0].tocke[3].x = 100;
    likovi[0].tocke[3].y = 200;
    likovi[0].tocke[4].x = 100;
    likovi[0].tocke[4].y = 100;
    likovi[0].brTocaka = 5;
    crtanje(&likovi[0]);

    int a;
    cin>>a;
    skaliraj(&likovi[0], a);
    system("pause");
    return 0;
}