void Learn::test4() {
int wallet1 = 300;
int wallet2 = 350;
cout << "wallet1 = $" << wallet1<<endl;
cout << "wallet2 = $" << wallet2<<endl;
swapr(wallet1,wallet2);
cout << "wallet1 = $" << wallet1<<endl;
cout << "wallet2 = $" << wallet2<<endl;
swapp(&wallet1, &wallet2);
cout << "wallet1 = $" << wallet1<<endl;
cout << "wallet2 = $" << wallet2<<endl;
swapv(wallet1,wallet2);
cout << "wallet1 = $" << wallet1<<endl;
cout << "wallet2 = $" << wallet2<<endl;
}
/* Triangle rasterization routine. */
void DrawTriangle(PixBufT *canvas,
TriPoint *p1, TriPoint *p2, TriPoint *p3)
{
EdgeScanT l12, l13, l23;
bool longOnRight;
if (p1->y > p2->y)
swapr(p1, p2);
if (p1->y > p3->y)
swapr(p1, p3);
if (p2->y > p3->y)
swapr(p2, p3);
LOG("Triangle: (%f, %f) (%f, %f) (%f, %f).",
p1->x, p1->y, p2->x, p2->y, p3->x, p3->y);
InitEdgeScan(&l12, p1, p2);
InitEdgeScan(&l13, p1, p3);
InitEdgeScan(&l23, p2, p3);
if (l12.height == 0)
longOnRight = (l12.width < 0);
else if (l23.height == 0)
longOnRight = (l23.width > 0);
else
longOnRight = CmpEdgeScan(&l12, &l13);
{
EdgeScanT *left = longOnRight ? &l12 : &l13;
EdgeScanT *right = longOnRight ? &l13 : &l12;
DrawTriangleSegment(canvas, left, right, lroundf(p1->y), l12.height);
if (longOnRight)
left = &l23;
else
right = &l23;
DrawTriangleSegment(canvas, left, right, lroundf(p2->y), l23.height);
}
}
__regargs UWORD ClipPolygon3D(Point3D *in, Point3D **outp, UWORD n,
UWORD clipFlags)
{
Point3D *out = *outp;
if (clipFlags) {
#if 0
if (clipFlags & PF_LEFT) {
n = ClipPolygon(in, out, n, PF_LEFT);
swapr(in, out);
}
if (clipFlags & PF_TOP) {
n = ClipPolygon(in, out, n, PF_TOP);
swapr(in, out);
}
if (clipFlags & PF_RIGHT) {
n = ClipPolygon(in, out, n, PF_RIGHT);
swapr(in, out);
}
if (clipFlags & PF_BOTTOM) {
n = ClipPolygon(in, out, n, PF_BOTTOM);
swapr(in, out);
}
#endif
if (clipFlags & PF_NEAR) {
n = ClipPolygon(in, out, n, PF_NEAR);
swapr(in, out);
}
if (clipFlags & PF_FAR) {
n = ClipPolygon(in, out, n, PF_FAR);
swapr(in, out);
}
}
*outp = in;
return n;
}
main()
{
int a=1,b=2;
swapr(&a,&b);
printf("After swap\na=%d, b=%d",a,b);
}
