Notes

// Template project.
#include "graphics.h"//biblioteca ce contine primitivele si functiile grafice
#include <math.h>
#include <stdlib.h>
#include <dos.h>
#include <windows.h>
#include <iostream>

using namespace std;

#define pi 3.14159265359
int minfigx, maxx, maxy, minfigy, maxfigx, maxfigy;
float al = pi / 8;
struct P3d {
float x;
float y;
float z;
P3d(float x = 0, float y = 0, float z = 0) {
this->x = x;
this->y = y;
this->z = z;
}
};
P3d piramida[5];
void init()
{
initwindow(1200, 800);
maxx = getmaxx();
maxy = getmaxy();
minfigx = (int)(-maxx / 2);
maxfigx = (int)(maxx / 2);
minfigy = (int)(-maxy / 2);
maxfigy = (int)(maxy / 2);
piramida[0] = P3d(50, 50, 0);
piramida[1] = P3d(250, 50, 0);
piramida[2] = P3d(250, 250, 0);
piramida[3] = P3d(50, 250, 0);
piramida[4] = P3d(150, 150, 250);
}
int xe(float x)
{
return ((int)(floor)(((x - minfigx) / (maxfigx - minfigx))*maxx));
}
int ye(float y)
{
return ((int)(floor)(((maxfigy - y) / (maxfigy - minfigy))*maxy));
}
void axe()
{
//putpixel(xe(10), ye(10), RED);
line(xe(0), ye(0), xe(maxfigx), ye(0));
line(xe(0), ye(0), xe(0), ye(maxfigy));
line(xe(0), ye(0), xe(minfigx*cos(al)), ye(minfigx*sin(al)));
}
struct P2d {
float x;
float y;
P2d(float x = 0, float y = 0) {
this->x = x;
this->y = y;
}
};

P2d transformare3d2d(P3d Punct)
{
float xdeafisat;
float ydeafisat;
xdeafisat = (Punct.x - Punct.y*cos(al));
ydeafisat = (Punct.z - Punct.y*sin(al));
P2d nou=P2d();
nou.x = xdeafisat;
nou.y = ydeafisat;
return nou;
}
void desenarepiramida()
{
P2d piramida2d[5];
for (int i = 0;i < 5;i++)
piramida2d[i] = transformare3d2d(piramida[i]);
line(xe(piramida2d[0].x), ye(piramida2d[0].y), xe(piramida2d[1].x), ye(piramida2d[1].y));
line(xe(piramida2d[0].x), ye(piramida2d[0].y), xe(piramida2d[3].x), ye(piramida2d[3].y));
line(xe(piramida2d[2].x), ye(piramida2d[2].y), xe(piramida2d[3].x), ye(piramida2d[3].y));
line(xe(piramida2d[1].x), ye(piramida2d[1].y), xe(piramida2d[2].x), ye(piramida2d[2].y));
line(xe(piramida2d[0].x), ye(piramida2d[0].y), xe(piramida2d[4].x), ye(piramida2d[4].y));
line(xe(piramida2d[1].x), ye(piramida2d[1].y), xe(piramida2d[4].x), ye(piramida2d[4].y));
line(xe(piramida2d[2].x), ye(piramida2d[2].y), xe(piramida2d[4].x), ye(piramida2d[4].y));
line(xe(piramida2d[3].x), ye(piramida2d[3].y), xe(piramida2d[4].x), ye(piramida2d[4].y));
}
void translatiep()
{
int t1 = -120, t2 = -120;
for(int i=0;i<5;i++)
{
line(xe(piramida2d[0].x), ye(piramida2d[0].y), xe(piramida2d[1].x), ye(piramida2d[1].y));
line(xe(piramida2d[0].x), ye(piramida2d[0].y), xe(piramida2d[3].x), ye(piramida2d[3].y));
line(xe(piramida2d[2].x), ye(piramida2d[2].y), xe(piramida2d[3].x), ye(piramida2d[3].y));
line(xe(piramida2d[1].x), ye(piramida2d[1].y), xe(piramida2d[2].x), ye(piramida2d[2].y));
line(xe(piramida2d[0].x), ye(piramida2d[0].y), xe(piramida2d[4].x), ye(piramida2d[4].y));
line(xe(piramida2d[1].x), ye(piramida2d[1].y), xe(piramida2d[4].x), ye(piramida2d[4].y));
line(xe(piramida2d[2].x), ye(piramida2d[2].y), xe(piramida2d[4].x), ye(piramida2d[4].y));
line(xe(piramida2d[3].x), ye(piramida2d[3].y), xe(piramida2d[4].x), ye(piramida2d[4].y));
/*
void triangle(int t1, int t2, int t3)
{
line(xe(t1), ye(t1), xe(t2), ye(y2));
}
*/
void translatie()
{
int t1 = -120, t2 = -120;
line(xe(30 + t1), ye(20 + t2), xe(100 + t1), ye(30 + t2));
line(xe(100 + t1), ye(30 + t2), xe(70 + t1), ye(70 + t2));
line(xe(70 + t1), ye(70 + t2), xe(30 + t1), ye(20 + t2));
}
void scale()
{
int t1 = 4, t2 = 4;
line(xe(30 * t1), ye(20 * t2), xe(100 * t1), ye(30 * t2));
line(xe(100 * t1), ye(30 * t2), xe(70 * t1), ye(70 * t2));
line(xe(70 * t1), ye(70 * t2), xe(30 * t1), ye(20 * t2));
}
void rotatie()
{
float al = -6 * pi / 180;
float xa = 30, ya = 20, xb = 100, yb = 30, xc = 70, yc = 70;
for (int i = 0;i < 60;i++)
{
cleardevice();
axe();

line(xe(xa), ye(ya), xe(xb), ye(yb));
line(xe(xb), ye(yb), xe(xc), ye(yc));
line(xe(xc), ye(yc), xe(xa), ye(ya));

Sleep(100);

xa = xa*cos(al) - ya*sin(al);
ya = xa*sin(al) + ya*cos(al);
xb = xb*cos(al) - yb*sin(al);
yb = xb*sin(al) + yb*cos(al);
xc = xc*cos(al) - yc*sin(al);
yc = xc*sin(al) + yc*cos(al);
}
}

void main() {


/*int t1, t2, t3;
cout << "t1=";cin >> t1;
cout << "t2=";cin >> t2;
cout << "t3=";cin >> t3;
*/
/*int ax = 30, ay = 20, bx = 100, by = 30, cx = 70, cy = 70;
line(xe(30), ye(20), xe(100), ye(30));
line(xe(100), ye(30),xe(70), ye(70));
line(xe(70), ye(70), xe(30), ye(20));
init();
rotatie();*/
init();
axe();

desenarepiramida();
getch();
closegraph();

}