int
M_PolyhedronRead(AG_DataSource *ds, M_Polyhedron *P)
{
Uint i, j;
P->nv = (Uint)AG_ReadUint32(ds);
P->ne = (Uint)AG_ReadUint32(ds);
P->nf = (Uint)AG_ReadUint32(ds);
if ((P->v = TryMalloc(P->nv*sizeof(M_Vector3))) == NULL ||
(P->e = TryMalloc(P->ne*sizeof(M_Halfedge))) == NULL ||
(P->f = TryMalloc(P->nf*sizeof(M_Facet))) == NULL)
goto fail;
/* Read vertices */
for (i = 0; i < P->nv; i++)
P->v[i] = M_ReadVector3(ds);
/* Read edges */
for (i = 0; i < P->ne; i+=2) {
M_Halfedge *eHead = &P->e[i];
M_Halfedge *eTail = &P->e[i+1];
eHead->v = (Uint)AG_ReadUint32(ds);
eTail->v = (Uint)AG_ReadUint32(ds);
if (eHead->v >= P->nv || eTail->v >= P->nv) {
AG_SetError("Edge%d: Bad vertex %d", i, eHead->v);
goto fail;
}
eHead->f = (Uint)AG_ReadUint32(ds);
eTail->f = (Uint)AG_ReadUint32(ds);
if (eHead->f >= P->nf || eTail->f >= P->nf) {
AG_SetError("Edge%d: Bad facet %d", i, eHead->f);
goto fail;
}
eHead->oe = i+1;
eTail->oe = i;
}
/* Read facets */
for (i = 0; i < P->nf; i++) {
M_Facet *f = &P->f[i];
f->n = (Uint)AG_ReadUint8(ds);
if ((f->e = TryMalloc(f->n*sizeof(Uint))) == NULL) {
goto fail;
}
for (j = 0; j < f->n; j++) {
f->e[j] = (Uint)AG_ReadUint32(ds);
if (f->e[j] >= P->ne) {
AG_SetError("Facet%d[%d]: Bad incident edge %d",
i, j, f->e[j]);
goto fail;
}
}
}
return (0);
fail:
return (-1);
}
/* Return a newly-allocated duplicate of an animation. */
AG_Anim *
AG_AnimDup(AG_Anim *sa)
{
AG_Anim *a;
int i;
AG_MutexLock(&sa->lock);
a = AG_AnimNew(sa->type, sa->w, sa->h, sa->format,
(sa->flags & AG_SAVED_ANIM_FLAGS));
if (a == NULL) {
AG_MutexUnlock(&sa->lock);
return (NULL);
}
if ((a->f = TryMalloc(sa->n*sizeof(AG_AnimFrame))) == NULL) {
goto fail;
}
for (i = 0; i < sa->n; i++) {
AG_AnimFrame *af = &a->f[i];
if ((af->pixels = TryMalloc(sa->h*sa->pitch)) == NULL) {
goto fail;
}
memcpy(af->pixels, sa->f[i].pixels, sa->h*sa->pitch);
a->n++;
}
AG_MutexUnlock(&sa->lock);
return (a);
fail:
AG_MutexUnlock(&sa->lock);
AG_AnimFree(a);
return (NULL);
}
static char *
GetAddrNumerical(AG_NetAddr *na)
{
const char *s;
switch (na->family) {
case AG_NET_INET4:
Free(na->sNum);
if ((na->sNum = TryMalloc(INET_ADDRSTRLEN)) == NULL) {
return (NULL);
}
s = inet_ntop(AF_INET, &na->na_inet4.addr, na->sNum,
INET_ADDRSTRLEN);
break;
#ifdef AF_INET6
case AG_NET_INET6:
Free(na->sNum);
if ((na->sNum = TryMalloc(INET6_ADDRSTRLEN)) == NULL) {
return (NULL);
}
s = inet_ntop(AF_INET6, &na->na_inet4.addr, na->sNum,
INET6_ADDRSTRLEN);
break;
#endif
default:
AG_SetError("Bad address format");
return (NULL);
}
if (s == NULL) {
AG_SetError("inet_ntop: %s", strerror(errno));
return (NULL);
}
return (na->sNum);
}
int main()
{
List list1, list2;
list1 = CreateListPositive();
list2 = CreateListNegative();
printf("Now insert an node into list1\n");
List newNode1 = TryMalloc();
newNode1->Num = 0;
newNode1->Next = NULL;
InsertNode(list1, newNode1, 0);
List newNode2 = TryMalloc();
newNode2->Num = 4;
newNode2->Next = NULL;
InsertNode(list1, newNode2, 4);
PrintList(list1);
printf("Append an element to the end of list2\n");
List appendNode = TryMalloc();
appendNode->Num = 88;
appendNode->Next = NULL;
AppendNode(list2, appendNode);
PrintList(list2);
printf("Now reverse list2...\n");
List reversedList = ReverseMyList(list2);
PrintList(reversedList);
printf("Now switchs 3 and 4 in list2...\n");
SwitchTwoNodes(reversedList, 3, 4);
PrintList(reversedList);
printf("Input \"y\" to destroy lists...");
char c = getchar();
getchar(); // Remove enter
if(tolower(c) == 'y')
{
printf("Destrying the list...\n");
DestroyList(list1);
DestroyList(list2);
}
}
/* Initialize the clipping rectangle stack. */
static int
InitClipRects(AG_DriverSDLGL *sgl, int wView, int hView)
{
AG_ClipRect *cr;
int i;
for (i = 0; i < 4; i++)
sgl->clipStates[i] = 0;
/* Rectangle 0 always covers the whole view. */
if ((sgl->clipRects = TryMalloc(sizeof(AG_ClipRect))) == NULL)
return (-1);
cr = &sgl->clipRects[0];
cr->r = AG_RECT(0, 0, wView, hView);
cr->eqns[0][0] = 1.0; cr->eqns[0][1] = 0.0;
cr->eqns[0][2] = 0.0; cr->eqns[0][3] = 0.0;
cr->eqns[1][0] = 0.0; cr->eqns[1][1] = 1.0;
cr->eqns[1][2] = 0.0; cr->eqns[1][3] = 0.0;
cr->eqns[2][0] = -1.0; cr->eqns[2][1] = 0.0;
cr->eqns[2][2] = 0.0; cr->eqns[2][3] = (double)wView;
cr->eqns[3][0] = 0.0; cr->eqns[3][1] = -1.0;
cr->eqns[3][2] = 0.0; cr->eqns[3][3] = (double)hView;
sgl->nClipRects = 1;
return (0);
}
/* Create a new animation of the specified pixel format. */
AG_Anim *
AG_AnimNew(enum ag_anim_type type, Uint w, Uint h, const AG_PixelFormat *pf,
Uint flags)
{
AG_Anim *a;
if ((a = TryMalloc(sizeof(AG_Anim))) == NULL) {
return (NULL);
}
if ((a->format = AG_PixelFormatDup(pf)) == NULL) {
Free(a);
return (NULL);
}
a->type = type;
a->flags = flags;
a->w = w;
a->h = h;
a->n = 0;
a->pitch = w*pf->BytesPerPixel;
a->clipRect = AG_RECT(0,0,w,h);
a->f = NULL;
a->fpsOrig = 30.0;
AG_MutexInitRecursive(&a->lock);
return (a);
}
static void
init_nl_buff(void) {
/* Allocate the newline buffer, if possible */
nl_size = 0 + NL_START;
nl_buff = (struct newline *)TryMalloc(sizeof (struct newline)*nl_size);
nl_free = 0;
}
static int
GetIfConfig(AG_NetAddrList *nal)
{
PIP_ADAPTER_INFO pAdapterInfo;
PIP_ADAPTER_INFO pAdapter;
PIP_ADDR_STRING pAddress;
DWORD dwRetVal = 0;
ULONG ulOutBufLen = sizeof(IP_ADAPTER_INFO);
AG_NetAddrListClear(nal);
if ((pAdapterInfo = TryMalloc(sizeof(IP_ADAPTER_INFO))) == NULL)
return (-1);
AG_MutexLock(&agNetWin32Lock);
dwRetVal = GetAdaptersInfo(pAdapterInfo, &ulOutBufLen);
if (dwRetVal == ERROR_BUFFER_OVERFLOW) {
PIP_ADAPTER_INFO pAdapterInfoNew;
if ((pAdapterInfoNew = TryRealloc(pAdapterInfo, ulOutBufLen))
== NULL) {
free(pAdapterInfo);
goto fail;
}
pAdapterInfo = pAdapterInfoNew;
dwRetVal = GetAdaptersInfo(pAdapterInfo, &ulOutBufLen);
}
if (dwRetVal != NO_ERROR) {
AG_SetError("GetAdaptersInfo() failed");
goto fail;
}
for (pAdapter = pAdapterInfo;
pAdapter != NULL;
pAdapter = pAdapter->Next) {
for (pAddress = &pAdapterInfo->IpAddressList;
pAddress != NULL;
pAddress = pAddress->Next) {
AG_NetAddr *na;
if ((na = AG_NetAddrNew()) == NULL) {
AG_NetAddrListClear(nal);
goto fail;
}
na->family = AG_NET_INET4;
na->port = 0;
na->na_inet4.addr = inet_addr(pAddress->IpAddress.String);
TAILQ_INSERT_TAIL(nal, na, addrs);
}
}
AG_MutexUnlock(&agNetWin32Lock);
free(pAdapterInfo);
return (0);
fail:
AG_MutexUnlock(&agNetWin32Lock);
return (-1);
}
/* Duplicate a polygon structure. */
int
M_PolygonCopy(M_Polygon *D, const M_Polygon *S)
{
if ((D->v = TryMalloc(S->n*sizeof(M_Vector2))) == NULL) {
return (-1);
}
D->n = S->n;
memcpy(D->v, S->v, S->n*sizeof(M_Vector2));
return (0);
}
/* Create a new database-bound object. */
AG_DbObject *
AG_DbObjectNew(void)
{
AG_DbObject *dbo;
if ((dbo = TryMalloc(sizeof(AG_DbObject))) == NULL) {
return (NULL);
}
AG_ObjectInit(dbo, &agDbObjectClass);
return (dbo);
}
List CreateListPositive()
{
List head, cursor;
head = TryMalloc();
head->Num = '\0';
head->Next = NULL;
cursor = head;
for(int i = 1; i < 5;i++)
{
List next;
next = TryMalloc();
next->Num = i + 1;
next->Next = NULL;
cursor->Num = i;
cursor->Next = next;
cursor = next; // Move to next node
}
return head;
}
/* Allocate a new user structure. */
AG_User *
AG_UserNew(void)
{
AG_User *u;
if ((u = TryMalloc(sizeof(AG_User))) == NULL) {
return (NULL);
}
u->name[0] = '\0';
u->flags = 0;
u->passwd = NULL;
u->uid = 0;
u->gid = 0;
u->loginClass = NULL;
u->gecos = NULL;
u->home = NULL;
u->shell = NULL;
u->tmp = NULL;
return (u);
}
static char *
GetAddrNumerical(AG_NetAddr *na)
{
struct sockaddr_storage sa;
socklen_t saLen;
Free(na->sNum);
if ((na->sNum = TryMalloc(NI_MAXHOST)) == NULL) {
return (NULL);
}
NetAddrToSockAddr(na, &sa, &saLen);
if (getnameinfo((struct sockaddr *)&sa, saLen,
na->sNum, NI_MAXHOST, NULL, 0,
NI_NUMERICHOST) != 0) {
AG_SetError("inet_ntop: %s", strerror(errno));
return (NULL);
}
return (na->sNum);
}
/*
* Create a polyhedron facet for the specified edges.
* Return facet index on success or 0 on failure.
*/
Uint
M_PolyhedronAddFacet(M_Polyhedron *P, Uint n, const Uint *e)
{
M_Facet *fNew, *f;
Uint *eNew;
if ((fNew = AG_TryRealloc(P->f, (P->nf+1)*sizeof(M_Facet))) == NULL) {
return (0);
}
if ((eNew = TryMalloc(n*sizeof(Uint))) == NULL) {
Free(fNew);
return (0);
}
P->f = fNew;
f = &P->f[P->nf];
f->e = eNew;
f->n = n;
memcpy(f->e, e, n*sizeof(Uint));
return (P->nf++);
}
/* Insert a new animation frame. */
int
AG_AnimFrameNew(AG_Anim *a, const AG_Surface *su)
{
AG_AnimFrame *afNew, *af;
AG_Surface *suTmp = NULL;
int nf;
AG_MutexLock(&a->lock);
if (su->w != a->w || su->h != a->h) {
if (AG_ScaleSurface(su, a->w, a->h, &suTmp) == -1)
goto fail;
} else {
if ((suTmp = AG_SurfaceConvert(su, a->format)) == NULL)
goto fail;
}
if ((afNew = TryRealloc(a->f, (a->n+1)*sizeof(AG_AnimFrame))) == NULL) {
goto fail;
}
a->f = afNew;
af = &a->f[a->n];
af->flags = 0;
if ((af->pixels = TryMalloc(su->h*a->pitch)) == NULL) {
a->n--;
goto fail;
}
memcpy(af->pixels, suTmp->pixels, su->h*a->pitch);
nf = a->n++;
AG_MutexUnlock(&a->lock);
AG_SurfaceFree(suTmp);
return (nf);
fail:
AG_MutexUnlock(&a->lock);
if (suTmp != NULL) {
AG_SurfaceFree(suTmp);
}
return (-1);
}
/* Initialize the default cursor. */
int
AG_SDL_InitDefaultCursor(void *obj)
{
AG_Driver *drv = AGDRIVER(obj);
AG_Cursor *ac;
SDL_Cursor *sc;
if ((sc = SDL_GetCursor()) == NULL) {
AG_SetError("SDL_GetCursor() returned NULL");
return (-1);
}
if ((drv->cursors = TryMalloc(sizeof(AG_Cursor))) == NULL) {
return (-1);
}
ac = &drv->cursors[0];
drv->nCursors = 1;
AG_CursorInit(ac);
ac->w = (Uint)sc->area.w;
ac->h = (Uint)sc->area.h;
ac->xHot = (int)sc->hot_x;
ac->yHot = (int)sc->hot_y;
ac->p = sc;
return (0);
}
/* Create a new database handle for the given database backend. */
AG_Db *
AG_DbNew(const char *backend)
{
AG_Db *db;
AG_DbClass *dbc = NULL;
#ifdef HAVE_DB4
/* XXX */
if (strcmp(backend, "hash")) {
dbc = &agDbHashClass;
} else if (strcmp(backend, "btree")) {
dbc = &agDbBtreeClass;
}
#endif
if (dbc == NULL) {
AG_SetError("No such database backend: %s", backend);
return (NULL);
}
if ((db = TryMalloc(sizeof(AG_Db))) == NULL) {
return (NULL);
}
AG_ObjectInit(db, dbc);
return (db);
}