void PG_Draw::DrawLine(SDL_Surface* surface, Uint32 x0, Uint32 y0, Uint32 x1, Uint32 y1, const PG_Color& color, Uint8 width) {
int deltax;
int deltay;
int temp;
int pixelflag;
if (!width || !surface)
return;
pixelflag=0;
/* swap y0 with y1 if y0 is greater than y1 */
if (y0 > y1) {
temp = y0;
y0 = y1;
y1 = temp;
temp = x0; /* switch the xs */
x0 = x1;
x1 = temp;
} /* end of the if */
/* handle four separate cases */
deltax = x1 - x0;
deltay = y1 - y0;
if (deltax > 0) {
if (deltax > deltay) {
octant0(surface, x0, y0, deltax, deltay, 1, color, width, pixelflag);
} /* end of if */
else {
octant1(surface, x0, y0, deltax, deltay, 1, color, width, pixelflag);
} /* end if else */
} /* end of the if */
else {
deltax = -deltax; /* abs value of delta x */
if (deltax > deltay) {
octant0(surface, x0, y0, deltax, deltay, -1, color, width, pixelflag);
} /* end of the if */
else {
/* not correct yet */
octant1(surface, x0, y0, deltax, deltay, -1, color, width, pixelflag);
} /* end of if-else */
} /* end of if - else */
} /* end of the function */
void cad1(t_param *param, t_seg *seg)
{
if (seg->dy != 0)
{
if (seg->dy > 0)
{
if (seg->dx >= seg->dy)
octant1(param, seg);
else
octant2(param, seg);
}
else
{
if (seg->dx >= -1 * seg->dy)
octant8(param, seg);
else
octant7(param, seg);
}
}
else
seg_x1(param, seg);
}
