Notes

#include "graphics.h"
#include <math.h>
#include <stdlib.h>
#include <dos.h>
#include <windows.h>
#include <iostream>

using namespace std;

int xMin, xMax, yMin, yMax, a, b;
float alfa = 3.14 / 8;


struct Pct2d {
float x;
float y;

Pct2d(float x = 0, float y = 0) {
this->x = x;
this->y = y;
}
};

struct Pct3d {
float x;
float y;
float z;

Pct3d(float x = 0, float y = 0, float z = 0) {
this->x = x;
this->y = y;
this->z = z;
}

};
Pct3d piramida[5];

Pct2d transf(Pct3d pct) {
float xPrim = (int)(pct.x - pct.y*cos(alfa));
float yPrim = (int)(pct.z - pct.y*sin(alfa));
Pct2d nou = Pct2d();
nou.x = xPrim;
nou.y = yPrim;

return nou;
}

void initializare() {

a = getmaxx();
b = getmaxy();
xMin = -a / 2;
xMax = a / 2;
yMin = -b / 2;
yMax = b / 2;

piramida[0] = Pct3d(50, 50, 0);
piramida[1] = Pct3d(250, 50, 0);
piramida[2] = Pct3d(250, 250, 0);
piramida[3] = Pct3d(50, 250, 0);
piramida[4] = Pct3d(150, 150, 250);
}

int Xe(float x) {

return (int)(floor)((x - xMin) / (xMax - xMin) *a);
}

int Ye(float y) {

return (int)(floor)((yMax - y) / (yMax - yMin)*b);
}

void axe3D() {
line(Xe(0), Ye(0), Xe(0), Ye(yMax)); //O-Y
line(Xe(0), Ye(0), Xe(xMax), Ye(0)); //O-X
line(Xe(0), Ye(0), Xe(0 + xMin*cos(alfa)), Ye(0 + xMin*sin(alfa))); //O-Z
}
Pct3d sp[3000];
Pct2d sp2d;
int n = 0;

void spirala() {
float x, y, z;
// setcolor(YELLOW);
float h = 3.1415 / 10;
float t = 0;
for (t = 0;t <= 100;t += h) {
x = t*cos(t / 4);
y = t*sin(t / 4);
z = t;
sp[n] = Pct3d(x, y, z);
n++;
}

for (int i = 0;i < n;i++) {
sp2d = transf(sp[i]);
putpixel(Xe(sp2d.x), Ye(sp2d.y), YELLOW);
}
}
void rotireSP() {
spirala();
float beta = -2 * 3.1415 / 180;
for (int j = 0;j < 360;j++) {
cleardevice();
axe3D();
for (int i = 0;i < n;i++) {
sp[i].x = sp[i].x*cos(beta) - sp[i].y*sin(beta);
sp[i].y = sp[i].x*sin(beta) + sp[i].y*cos(beta);
sp[i].z = sp[i].z;
sp2d = transf(sp[i]);
putpixel(Xe(sp2d.x), Ye(sp2d.y), YELLOW);
}

Sleep(25);
}
}

float distanta(Pct2d A, Pct2d B)
{
return sqrt((int)((B.x - A.x)*(B.x - A.x) + (B.y - A.y)*(B.y - A.y)));
}
void puncte()
{
Pct2d A, B;
cout << "introudecti coordonate pentru A" << endl;
cin >> A.x;
cin >> A.y;
cout << "introudecti coordonate pentru B" << endl;
cin >> B.x;
cin >> B.y;
cout << "Distanta dintre A si B este " << distanta(A, B);
line(Xe(A.x), Ye(A.x), Xe(B.x), Ye(B.y));

}


void main() {
initwindow(1080, 720);

initializare();
axe3D();

Pct3d p3d;
p3d.x = 120;
p3d.y = 60;
p3d.z = 60;
Pct2d p2d = transf(p3d);

putpixel(Xe(p2d.x), Ye(p2d.y), LIGHTRED);



puncte();

getch();
closegraph();

}