void RC5::Base::UncheckedSetKey(const byte *k, unsigned int keylen, const NameValuePairs ¶ms)
{
AssertValidKeyLength(keylen);
r = GetRoundsAndThrowIfInvalid(params, this);
sTable.New(2*(r+1));
static const RC5_WORD MAGIC_P = 0xb7e15163L; // magic constant P for wordsize
static const RC5_WORD MAGIC_Q = 0x9e3779b9L; // magic constant Q for wordsize
static const int U=sizeof(RC5_WORD);
const unsigned int c = STDMAX((keylen+U-1)/U, 1U); // RC6 paper says c=1 if keylen==0
SecBlock<RC5_WORD> l(c);
GetUserKey(LITTLE_ENDIAN_ORDER, l.begin(), c, k, keylen);
sTable[0] = MAGIC_P;
for (unsigned j=1; j<sTable.size();j++)
sTable[j] = sTable[j-1] + MAGIC_Q;
RC5_WORD a=0, b=0;
const unsigned n = 3*STDMAX((unsigned int)sTable.size(), c);
for (unsigned h=0; h < n; h++)
{
a = sTable[h % sTable.size()] = rotlConstant<3>((sTable[h % sTable.size()] + a + b));
b = l[h % c] = rotlMod((l[h % c] + a + b), (a+b));
}
}
void RC6::Base::UncheckedSetKey(CipherDir direction, const byte *k, unsigned int keylen, unsigned int rounds)
{
AssertValidKeyLength(keylen);
AssertValidRounds(rounds);
r = rounds;
sTable.New(2*(r+2));
static const RC6_WORD MAGIC_P = 0xb7e15163L; // magic constant P for wordsize
static const RC6_WORD MAGIC_Q = 0x9e3779b9L; // magic constant Q for wordsize
static const int U=sizeof(RC6_WORD);
const unsigned int c = STDMAX((keylen+U-1)/U, 1U); // RC6 paper says c=1 if keylen==0
SecBlock<RC6_WORD> l(c);
GetUserKey(LITTLE_ENDIAN_ORDER, l.begin(), c, k, keylen);
sTable[0] = MAGIC_P;
for (unsigned j=1; j<sTable.size();j++)
sTable[j] = sTable[j-1] + MAGIC_Q;
RC6_WORD a=0, b=0;
const unsigned n = 3*STDMAX((unsigned int)sTable.size(), c);
for (unsigned h=0; h < n; h++)
{
a = sTable[h % sTable.size()] = rotlFixed((sTable[h % sTable.size()] + a + b), 3);
b = l[h % c] = rotlMod((l[h % c] + a + b), (a+b));
}
}
RC6Base::RC6Base(const byte *k, unsigned int keylen, unsigned int rounds)
: r(rounds), sTable((2*r)+4)
{
assert(keylen == KeyLength(keylen));
static const RC6_WORD MAGIC_P = 0xb7e15163L; // magic constant P for wordsize
static const RC6_WORD MAGIC_Q = 0x9e3779b9L; // magic constant Q for wordsize
static const int U=sizeof(RC6_WORD);
const unsigned int c=(keylen-1)/U + 1;
SecBlock<RC6_WORD> l(c);
GetUserKeyLittleEndian(l.ptr, c, k, keylen);
sTable[0] = MAGIC_P;
for (unsigned j=1; j<sTable.size;j++)
sTable[j] = sTable[j-1] + MAGIC_Q;
RC6_WORD a=0, b=0;
const unsigned n = 3*STDMAX(sTable.size,c);
for (unsigned h=0; h < n; h++)
{
a = sTable[h % sTable.size] = rotlFixed((sTable[h % sTable.size] + a + b), 3);
b = l[h % c] = rotlMod((l[h % c] + a + b), (a+b));
}
}
bool TestModeIV(SymmetricCipher &e, SymmetricCipher &d)
{
SecByteBlock lastIV, iv(e.IVSize());
StreamTransformationFilter filter(e, new StreamTransformationFilter(d));
byte plaintext[20480];
for (unsigned int i=1; i<sizeof(plaintext); i*=2)
{
e.GetNextIV(GlobalRNG(), iv);
if (iv == lastIV)
return false;
else
lastIV = iv;
e.Resynchronize(iv);
d.Resynchronize(iv);
unsigned int length = STDMAX(GlobalRNG().GenerateWord32(0, i), (word32)e.MinLastBlockSize());
GlobalRNG().GenerateBlock(plaintext, length);
if (!TestFilter(filter, plaintext, length, plaintext, length))
return false;
}
return true;
}
RC6Base::RC6Base(const byte *k, unsigned int keylen, unsigned int rounds)
: r(rounds), sTable((2*r)+4)
{
static const RC6_WORD MAGIC_P = 0xb7e15163L; // magic constant P for wordsize
static const RC6_WORD MAGIC_Q = 0x9e3779b9L; // magic constant Q for wordsize
static const int U=sizeof(RC6_WORD);
const unsigned int c=(keylen-1)/U + 1;
SecBlock<RC6_WORD> l(c);
l[(keylen-1)/U] = 0; // clear top word for when keylen%U != 0
for (int i = (keylen-1) ; i >= 0; i--)
l[i/U] = (l[i/U] << 8) + k[i];
sTable[0] = MAGIC_P;
for (unsigned j=1; j<sTable.size;j++)
sTable[j] = sTable[j-1] + MAGIC_Q;
RC6_WORD a=0, b=0;
const unsigned n = 3*STDMAX(sTable.size,c);
for (unsigned h=0; h < n; h++)
{
a = sTable[h % sTable.size] = ROTL((sTable[h % sTable.size] + a + b), 3);
b = l[h % c] = ROTL((l[h % c] + a + b), (a+b));
}
}
STDINLINE int stderr_output(stderr_action act, int errno_copy, const char *fmt, ...)
{
char buf[STDERR_MAX_ERR_MSG_LEN + 1];
int ret1 = 0;
int ret2 = 0;
va_list ap;
if (stdutil_output != NULL) {
va_start(ap, fmt);
ret1 = vsprintf(buf, fmt, ap); /* write the msg */
ret1 = STDMAX(ret1, 0); /* zero out any error */
buf[ret1] = 0; /* ensure termination */
if (errno_copy != 0) {
ret2 = sprintf(buf + ret1, ": %s", strerror(errno_copy)); /* errno msg */
ret2 = STDMAX(ret2, 0); /* zero out */
buf[ret1 + ret2] = 0; /* termination */
}
if (stdutil_output == (FILE*) 0x1) {
stdutil_output = stderr;
}
fprintf(stdutil_output, "%s\r\n", buf);
fflush(stdutil_output);
ret1 += 2; /* +2 for \r\n */
va_end(ap);
}
if (act == STDERR_EXIT) {
exit(-1);
}
if (act == STDERR_ABORT) {
abort();
}
return ret1 + ret2;
}
float NetworkSink::ComputeCurrentSpeed()
{
if (m_speedTimer.ElapsedTime() > 1000)
{
m_currentSpeed = m_byteCountSinceLastTimerReset * 1000 / m_speedTimer.ElapsedTime();
m_maxObservedSpeed = STDMAX(m_currentSpeed, m_maxObservedSpeed * 0.98f);
m_byteCountSinceLastTimerReset = 0;
m_speedTimer.StartTimer();
// OutputDebugString(("max speed: " + IntToString((int)m_maxObservedSpeed) + " current speed: " + IntToString((int)m_currentSpeed) + "\n").c_str());
}
return m_currentSpeed;
}
STDINLINE static void stdarr_low_remove_space(stdarr *arr, stdarr_it *it, stdsize num_remove)
{
stdsize nsize = arr->size - num_remove;
stdsize delta = num_remove * arr->vsize;
char * it_end = it->val + delta;
stdsize after = (stdsize) (arr->end - it_end);
/* shift memory to remove space */
memmove(it->val, it_end, after);
arr->end -= delta;
arr->size = nsize;
/* reallocate if current capacity is too big */
if ((arr->opts & STDARR_OPTS_NO_AUTO_SHRINK) == 0 && /* shrinking allowed */
nsize <= stdarr_low_capacity(arr) && /* shrinking needed */
arr->cap != STDARR_MIN_AUTO_ALLOC) { /* cap not at min alloc */
stdsize ncap = (nsize << 1);
stdsize prior = (stdsize) (it->val - arr->begin);
ncap = STDMAX(ncap, STDARR_MIN_AUTO_ALLOC); /* ensure minimum allocation */
if (ncap != 0) { /* nsize/ncap can be zero here */
stdsize asize = ncap * arr->vsize;
char * mem;
if ((mem = (char*) realloc(arr->begin, asize)) == NULL) {
return; /* couldn't realloc -> that's OK */
}
arr->begin = mem; /* fill in new values for 'arr' */
arr->end = mem + prior + after;
arr->cap = ncap;
} else { /* ncap == 0 -> go to zero */
if (arr->begin != NULL) {
free(arr->begin);
}
arr->begin = NULL;
arr->end = NULL;
arr->cap = 0;
}
it->val = arr->begin + prior; /* relocate 'it' to erasure point */
}
}
byte * ByteQueue::CreatePutSpace(size_t &size)
{
if (m_lazyLength > 0)
FinalizeLazyPut();
if (m_tail->m_tail == m_tail->MaxSize())
{
m_tail->next = new ByteQueueNode(STDMAX(m_nodeSize, size));
m_tail = m_tail->next;
}
size = m_tail->MaxSize() - m_tail->m_tail;
return m_tail->buf + m_tail->m_tail;
}
STDINLINE static stdcode stdarr_low_insert_space(stdarr *arr, stdarr_it *it, stdsize num_insert)
{
stdcode ret = STDESUCCESS;
stdsize nsize = arr->size + num_insert;
stdsize delta = num_insert * arr->vsize;
stdsize after = (stdsize) (arr->end - it->val);
/* reallocate if current capacity is not big enough */
if (nsize > stdarr_high_capacity(arr)) { /* nsize > X -> nsize > 0 */
stdsize ncap;
stdsize prior;
stdsize asize;
char * mem;
if ((arr->opts & STDARR_OPTS_NO_AUTO_GROW) != 0) { /* growth explicitly disallowed */
ret = STDEACCES;
goto stdarr_low_insert_space_end;
}
ncap = (nsize << 1); /* nsize > 0 -> ncap > 0 */
ncap = STDMAX(ncap, STDARR_MIN_AUTO_ALLOC); /* ensure minimum allocation */
asize = ncap * arr->vsize; /* calc. alloc size in bytes */
prior = (stdsize) (it->val - arr->begin);
if ((mem = (char*) realloc(arr->begin, asize)) == NULL) {
ret = STDENOMEM;
goto stdarr_low_insert_space_end;
}
arr->begin = mem; /* fill in new values for 'arr' */
arr->end = mem + prior + after;
arr->cap = ncap;
it->val = mem + prior; /* relocate 'it' to insertion point */
}
/* shift memory to create space */
memmove(it->val + delta, it->val, after);
arr->end += delta;
arr->size = nsize;
stdarr_low_insert_space_end:
return ret;
}
std::list<WCIntersectionResult> __WILDCAT_NAMESPACE__::GeometricIntersection(WCGeometricLine *left,
WCGeometricPoint *right, const WPFloat &tol, const unsigned int &flags) {
std::list<WCIntersectionResult> results;
//Get line direction vector
WCVector4 direction = left->End() - left->Begin();
//Get the length of the direction vector
WPFloat dirLen = direction.Magnitude();
//Get line-being to point vector
WCVector4 pointVector = right->Data() - left->Begin();
WPFloat u = direction.DotProduct(pointVector) / (dirLen * dirLen);
//Bounds check u for [0, 1] - return empty if out of bounds
if ((u < -tol) || (u > (1.0 + tol))) return results;
//Do cull boundary check - return if true
if ((flags & INTERSECT_CULL_BOUNDARY) && ((u < tol) || (1.0 - u < tol) )) return results;
//Bound u [0.0 to 1.0]
u = STDMAX( STDMIN(u, 1.0), 0.0);
//Get the point on the line
WCVector4 pt = left->Begin() + direction * u;
//Get distance from point on line to point
if (pt.Distance(right->Data()) <= tol) {
//Create intesect result
WCIntersectionResult hit;
hit.type = IntersectPoint;
hit.leftBoundary = (u < tol) || (1.0 - u < tol);
hit.rightBoundary = true;
hit.leftParam.I(u);
hit.rightParam = right->Data();
//See if genObj
if (flags & INTERSECT_GEN_POINTS) {
//Create new point
WCGeometricPoint *newPoint = new WCGeometricPoint(pt);
//Add to result struct
hit.object = newPoint;
}
else hit.object = NULL;
//Add result to the output list
std::cout << hit << right->Data() << std::endl;
results.push_back(hit);
}
//Return the results
return results;
}
size_t ByteQueue::Put2(const byte *inString, size_t length, int messageEnd, bool blocking)
{
if (m_lazyLength > 0)
FinalizeLazyPut();
size_t len;
while ((len=m_tail->Put(inString, length)) < length)
{
inString += len;
length -= len;
if (m_autoNodeSize && m_nodeSize < s_maxAutoNodeSize)
do
{
m_nodeSize *= 2;
}
while (m_nodeSize < length && m_nodeSize < s_maxAutoNodeSize);
m_tail->next = new ByteQueueNode(STDMAX(m_nodeSize, length));
m_tail = m_tail->next;
}
return 0;
}
void WaitObjectContainer::AddWriteFd(int fd)
{
FD_SET(fd, &m_writefds);
m_maxFd = STDMAX(m_maxFd, fd);
}
void WaitObjectContainer::AddReadFd(int fd)
{
FD_SET(fd, &m_readfds);
m_maxFd = STDMAX(m_maxFd, fd);
}
template <class T> T AbstractGroup<T>::CascadeScalarMultiply(const Element &x, const Integer &e1, const Element &y, const Integer &e2) const
{
const unsigned expLen = STDMAX(e1.BitCount(), e2.BitCount());
if (expLen==0)
return this->Identity();
const unsigned w = (expLen <= 46 ? 1 : (expLen <= 260 ? 2 : 3));
const unsigned tableSize = 1<<w;
std::vector<Element> powerTable(tableSize << w);
powerTable[1] = x;
powerTable[tableSize] = y;
if (w==1)
powerTable[3] = this->Add(x,y);
else
{
powerTable[2] = this->Double(x);
powerTable[2*tableSize] = this->Double(y);
unsigned i, j;
for (i=3; i<tableSize; i+=2)
powerTable[i] = Add(powerTable[i-2], powerTable[2]);
for (i=1; i<tableSize; i+=2)
for (j=i+tableSize; j<(tableSize<<w); j+=tableSize)
powerTable[j] = Add(powerTable[j-tableSize], y);
for (i=3*tableSize; i<(tableSize<<w); i+=2*tableSize)
powerTable[i] = Add(powerTable[i-2*tableSize], powerTable[2*tableSize]);
for (i=tableSize; i<(tableSize<<w); i+=2*tableSize)
for (j=i+2; j<i+tableSize; j+=2)
powerTable[j] = Add(powerTable[j-1], x);
}
Element result;
unsigned power1 = 0, power2 = 0, prevPosition = expLen-1;
bool firstTime = true;
for (int i = expLen-1; i>=0; i--)
{
power1 = 2*power1 + e1.GetBit(i);
power2 = 2*power2 + e2.GetBit(i);
if (i==0 || 2*power1 >= tableSize || 2*power2 >= tableSize)
{
unsigned squaresBefore = prevPosition-i;
unsigned squaresAfter = 0;
prevPosition = i;
while ((power1 || power2) && power1%2 == 0 && power2%2==0)
{
power1 /= 2;
power2 /= 2;
squaresBefore--;
squaresAfter++;
}
if (firstTime)
{
result = powerTable[(power2<<w) + power1];
firstTime = false;
}
else
{
while (squaresBefore--)
result = this->Double(result);
if (power1 || power2)
Accumulate(result, powerTable[(power2<<w) + power1]);
}
while (squaresAfter--)
result = this->Double(result);
power1 = power2 = 0;
}
}
return result;
}
void StreamTransformationFilter::FirstPut(const byte* inString)
{
CRYPTOPP_UNUSED(inString);
m_optimalBufferSize = m_cipher.OptimalBlockSize();
m_optimalBufferSize = (unsigned int)STDMAX(m_optimalBufferSize, RoundDownToMultipleOf(4096U, m_optimalBufferSize));
}
void WaitObjectContainer::AddReadFd(int fd, CallStack const& callStack) // TODO: do something with callStack
{
CRYPTOPP_UNUSED(callStack);
FD_SET(fd, &m_readfds);
m_maxFd = STDMAX(m_maxFd, fd);
}
void StreamTransformationFilter::FirstPut(const byte *inString)
{
m_optimalBufferSize = m_cipher.OptimalBlockSize();
m_optimalBufferSize = STDMAX(m_optimalBufferSize, RoundDownToMultipleOf(4096U, m_optimalBufferSize));
}
void StreamTransformationFilter::LastPut(const byte *inString, size_t length)
{
byte *space = NULL;
switch (m_padding)
{
case NO_PADDING:
case ZEROS_PADDING:
if (length > 0)
{
size_t minLastBlockSize = m_cipher.MinLastBlockSize();
bool isForwardTransformation = m_cipher.IsForwardTransformation();
if (isForwardTransformation && m_padding == ZEROS_PADDING && (minLastBlockSize == 0 || length < minLastBlockSize))
{
// do padding
size_t blockSize = STDMAX(minLastBlockSize, (size_t)m_cipher.MandatoryBlockSize());
space = HelpCreatePutSpace(*AttachedTransformation(), DEFAULT_CHANNEL, blockSize);
if (inString) {memcpy(space, inString, length);}
memset(space + length, 0, blockSize - length);
m_cipher.ProcessLastBlock(space, space, blockSize);
AttachedTransformation()->Put(space, blockSize);
}
else
{
if (minLastBlockSize == 0)
{
if (isForwardTransformation)
throw InvalidDataFormat("StreamTransformationFilter: plaintext length is not a multiple of block size and NO_PADDING is specified");
else
throw InvalidCiphertext("StreamTransformationFilter: ciphertext length is not a multiple of block size");
}
space = HelpCreatePutSpace(*AttachedTransformation(), DEFAULT_CHANNEL, length, m_optimalBufferSize);
m_cipher.ProcessLastBlock(space, inString, length);
AttachedTransformation()->Put(space, length);
}
}
break;
case PKCS_PADDING:
case ONE_AND_ZEROS_PADDING:
unsigned int s;
s = m_cipher.MandatoryBlockSize();
assert(s > 1);
space = HelpCreatePutSpace(*AttachedTransformation(), DEFAULT_CHANNEL, s, m_optimalBufferSize);
if (m_cipher.IsForwardTransformation())
{
assert(length < s);
if (inString) {memcpy(space, inString, length);}
if (m_padding == PKCS_PADDING)
{
assert(s < 256);
byte pad = byte(s-length);
memset(space+length, pad, s-length);
}
else
{
space[length] = 0x80;
memset(space+length+1, 0, s-length-1);
}
m_cipher.ProcessData(space, space, s);
AttachedTransformation()->Put(space, s);
}
else
{
if (length != s)
throw InvalidCiphertext("StreamTransformationFilter: ciphertext length is not a multiple of block size");
m_cipher.ProcessData(space, inString, s);
if (m_padding == PKCS_PADDING)
{
byte pad = space[s-1];
if (pad < 1 || pad > s || std::find_if(space+s-pad, space+s, std::bind2nd(std::not_equal_to<byte>(), pad)) != space+s)
throw InvalidCiphertext("StreamTransformationFilter: invalid PKCS #7 block padding found");
length = s-pad;
}
else
{
while (length > 1 && space[length-1] == 0)
--length;
if (space[--length] != 0x80)
throw InvalidCiphertext("StreamTransformationFilter: invalid ones-and-zeros padding found");
}
AttachedTransformation()->Put(space, length);
}
break;
default:
assert(false);
}
}
std::list<WCIntersectionResult> __WILDCAT_NAMESPACE__::GeometricIntersection(WCGeometricLine *left,
WCGeometricLine *right, const WPFloat &tol, unsigned const int &flags) {
std::list<WCIntersectionResult> results;
//Check if self intersecting
if (left == right) return results;
//Evaluate both lines at both ends
WCVector4 p1 = left->Begin();
WCVector4 p2 = left->End();
WCVector4 p3 = right->Begin();
WCVector4 p4 = right->End();
//Get length vectors
WCVector4 p21(p2 - p1);
WCVector4 p43(p4 - p3);
WPFloat dist;
//Check for parallel
WCVector4 cross = p43.CrossProduct(p21);
WPFloat denom = cross.Magnitude();
WPFloat onePlusTol = 1.0 + tol;
if (denom < 0.001) {
//Determine perpendicular distance
WPFloat p21mag = p21.Magnitude();
WCVector4 p13(p1 - p3);
WCVector4 num = p21.CrossProduct(p13);
dist = num.Magnitude() / p21mag;
//If outside of tolerance, no intersection
if (dist <= tol) {
//Project all four points onto opposite lines
p21 /= p21mag;
WPFloat p43mag = p43.Magnitude();
p43 /= p43mag;
WCVector4 p31(p3 - p1);
WCVector4 p41(p4 - p1);
WCVector4 p23(p2 - p3);
WPFloat p1Proj = p43.DotProduct(p13) / p43mag;
WPFloat p2Proj = p43.DotProduct(p23) / p43mag;
WPFloat p3Proj = p21.DotProduct(p31) / p21mag;
WPFloat p4Proj = p21.DotProduct(p41) / p21mag;
//See if each point is in 0.0 to 1.0 +- tolerance
bool p1In = (p1Proj > -tol) && (p1Proj < onePlusTol);
bool p2In = (p2Proj > -tol) && (p2Proj < onePlusTol);
bool p3In = (p3Proj > -tol) && (p3Proj < onePlusTol);
bool p4In = (p4Proj > -tol) && (p4Proj < onePlusTol);
//If none are in then no overlap, return
if ( p1In || p2In || p3In || p4In) {
//Bounds check all of the projections
p1Proj = STDMAX(0.0, STDMIN(1.0, p1Proj));
p2Proj = STDMAX(0.0, STDMIN(1.0, p2Proj));
p3Proj = STDMAX(0.0, STDMIN(1.0, p3Proj));
p4Proj = STDMAX(0.0, STDMIN(1.0, p4Proj));
//Create hit result
WCIntersectionResult hit;
hit.type = IntersectLine;
WCVector4 pStart, pEnd;
//Case 1 - Left is completely within Right
if (p1In && p2In) {
//Set the start and end points
pStart = p1;
pEnd = p2;
//Set the param values
hit.leftParam.I( 0.0 );
hit.leftParam.J( 1.0 );
hit.rightParam.I( STDMIN(p1Proj,p2Proj) );
hit.rightParam.J( STDMAX(p1Proj,p2Proj) );
//Set boundary values
hit.leftBoundary = true;
hit.rightBoundary = false;
}
//Case 2 - Right is completely within Left
else if (p3In && p4In) {
//Set the start and end points
pStart = p3;
pEnd = p4;
//Set the param values
hit.leftParam.I( STDMIN(p3Proj,p4Proj) );
hit.leftParam.J( STDMAX(p3Proj,p4Proj) );
hit.rightParam.I( 0.0 );
hit.rightParam.J( 1.0 );
//Set boundary values
hit.leftBoundary = false;
hit.rightBoundary = true;
}
//Remaining Cases
else {
//Simple sets
if (p1In) { hit.leftParam.I(0.0); pStart = p1; }
if (p2In) { hit.leftParam.J(1.0); pStart = p2; }
if (p3In) { hit.rightParam.I(0.0); pEnd = p3; }
if (p4In) { hit.rightParam.J(1.0); pEnd = p4; }
//Double sets
if (p1In && p3In) { hit.leftParam.J(p3Proj); hit.rightParam.J(p1Proj); }
if (p1In && p4In) { hit.leftParam.J(p4Proj); hit.rightParam.I(p1Proj); }
if (p2In && p3In) { hit.leftParam.I(p3Proj); hit.rightParam.J(p2Proj); }
if (p2In && p4In) { hit.leftParam.I(p4Proj); hit.rightParam.I(p2Proj); }
//Check to see if intersection is a point (think of two lines end to end)
if (pStart.Distance(pEnd) < tol) hit.type = IntersectPoint;
//This is not the best way to check for CULL BOUNDARY, but if pStart and pEnd distance < tol, must be end-to-end
if ((flags & INTERSECT_CULL_BOUNDARY) && (hit.type == IntersectPoint))
return results;
//Set boundary values
hit.leftBoundary = true;
hit.rightBoundary = true;
}
//Overlap forces boundarys to false
//See if genObj
if ((hit.type == IntersectPoint) && (flags & INTERSECT_GEN_POINTS)) {
//Create new point
WCGeometricPoint *newPoint = new WCGeometricPoint(pStart);
//Add to result struct
hit.object = newPoint;
}
else if ((hit.type == IntersectLine) && (flags & INTERSECT_GEN_LINES)) {
//Create new line
WCGeometricLine *newLine = new WCGeometricLine(pStart, pEnd);
//Add to result struct
hit.object = newLine;
}
else hit.object = NULL;
//Add the hit to the list
results.push_back(hit);
}
}
}
//Non-Parallel Case
else {
//Many dot products
WPFloat d121 = p1.DotProduct(p21); // L
WPFloat d2121 = p21.DotProduct(p21); // M
WPFloat d321 = p3.DotProduct(p21); // N
WPFloat d4321 = p43.DotProduct(p21); // O
WPFloat d143 = p1.DotProduct(p43); // Q
WPFloat d343 = p3.DotProduct(p43); // R
WPFloat d4343 = p43.DotProduct(p43); // S
denom = (d4343 * d2121) - (d4321 * d4321);
//What does this correspond to?
if (denom == 0.0) {
CLOGGER_WARN(WCLogManager::RootLogger(), "GeometricIntersection::LineLine - Denominator == 0.0.");
}
//Otherwise
else {
//Calculate parametric intersection values
WPFloat numer = d4343 * (d321 - d121) + d4321 * (d143 - d343);
WPFloat mua = numer / denom;
WPFloat mub = (d143 + d4321 * mua - d343) / d4343;
//Make sure mua and mub are (0.0 +- tol, 1.0 +- tol)
if ( (mua < onePlusTol) && (mua > -tol) && (mub < onePlusTol) && (mub > -tol) ) {
//Bound mua and mub [0, 1]
mua = STDMAX(0.0, STDMIN(1.0, mua));
mub = STDMAX(0.0, STDMIN(1.0, mub));
//Calculate points and distance between them
WCVector4 pointOnFirst = p1 + p21 * mua;
WCVector4 pointOnSecond = p3 + p43 * mub;
//Make sure lines are not > tol apart
dist = pointOnFirst.Distance(pointOnSecond);
if (dist < tol) {
//Create intersection result
WCIntersectionResult hit;
hit.type = IntersectPoint;
hit.leftParam.I(mua);
hit.rightParam.I(mub);
hit.leftBoundary = (fabs(mua) < tol) || (fabs(mua-1.0) < tol);
hit.rightBoundary = (fabs(mub) < tol) || (fabs(mub-1.0) < tol);
//Check for culling end-point intersections
if (!(flags & INTERSECT_CULL_BOUNDARY) || (!hit.leftBoundary && !hit.rightBoundary)) {
//See if genObj
if (flags & INTERSECT_GEN_POINTS) {
//Create new point
WCGeometricPoint *newPoint = new WCGeometricPoint(pointOnFirst);
//Add to result struct
hit.object = newPoint;
}
else hit.object = NULL;
//Add the intersection to the list
// std::cout << hit << pointOnFirst << std::endl;
results.push_back(hit);
}
}
}
}
}
//Return result
return results;
}
void WaitObjectContainer::AddWriteFd(int fd, CallStack const& callStack) // TODO: do something with callStack
{
FD_SET(fd, &m_writefds);
m_maxFd = STDMAX(m_maxFd, fd);
}