const Vector3* AxisAlignedBox::getAllCorners(void) const
{
PE_ASSERT((mExtent == EXTENT_FINITE) && "Can't get corners of a null or infinite AAB");
// The order of these items is, using right-handed co-ordinates:
// Minimum Z face, starting with Min(all), then anticlockwise
// around face (looking onto the face)
// Maximum Z face, starting with Max(all), then anticlockwise
// around face (looking onto the face)
// Only for optimization/compatibility.
if (!mpCorners)
mpCorners = new Vector3[8];
mpCorners[0] = mMinimum;
mpCorners[1].x = mMinimum.x; mpCorners[1].y = mMaximum.y; mpCorners[1].z = mMinimum.z;
mpCorners[2].x = mMaximum.x; mpCorners[2].y = mMaximum.y; mpCorners[2].z = mMinimum.z;
mpCorners[3].x = mMaximum.x; mpCorners[3].y = mMinimum.y; mpCorners[3].z = mMinimum.z;
mpCorners[4] = mMaximum;
mpCorners[5].x = mMinimum.x; mpCorners[5].y = mMaximum.y; mpCorners[5].z = mMaximum.z;
mpCorners[6].x = mMinimum.x; mpCorners[6].y = mMinimum.y; mpCorners[6].z = mMaximum.z;
mpCorners[7].x = mMaximum.x; mpCorners[7].y = mMinimum.y; mpCorners[7].z = mMaximum.z;
return mpCorners;
}
wchar_t * _itow(int value, wchar_t *str, int radix)
{
PE_ASSERT(radix == 10);
// assume buffer is smaller than 100. This is not full port.
swprintf(str, 100, L"%d", value);
return str;
}
void AxisAlignedBox::setExtents(const Vector3& min, const Vector3& max)
{
PE_ASSERT((min.x <= max.x && min.y <= max.y && min.z <= max.z) &&
"The minimum corner of the box must be less than or equal to maximum corner");
mExtent = EXTENT_FINITE;
mMinimum = min;
mMaximum = max;
}
ParaEngine::Vector3 AxisAlignedBox::getCenter(void) const
{
PE_ASSERT((mExtent == EXTENT_FINITE) && "Can't get center of a null or infinite AAB");
return Vector3(
(mMaximum.x + mMinimum.x) * 0.5f,
(mMaximum.y + mMinimum.y) * 0.5f,
(mMaximum.z + mMinimum.z) * 0.5f);
}
void BMaxObject::SetPhysicsGroup(int nGroup)
{
PE_ASSERT(0 <= nGroup && nGroup < 32);
if (m_nPhysicsGroup != nGroup)
{
m_nPhysicsGroup = nGroup;
UnloadPhysics();
}
}
void AxisAlignedBox::setExtents(float mx, float my, float mz, float Mx, float My, float Mz)
{
PE_ASSERT((mx <= Mx && my <= My && mz <= Mz) &&
"The minimum corner of the box must be less than or equal to maximum corner");
mExtent = EXTENT_FINITE;
mMinimum.x = mx;
mMinimum.y = my;
mMinimum.z = mz;
mMaximum.x = Mx;
mMaximum.y = My;
mMaximum.z = Mz;
}
/**
* _findclose - equivalent
*/
int _findclose(long h)
{
if (h==-1) return 0;
if (h < 0 || h >= (long)fileInfo.size())
{
PE_ASSERT(false);
return -1;
}
_findinfo_t* fi = fileInfo[h];
closedir(fi->openedDir);
fileInfo.clear();
delete fi;
return 0;
}
int _findnext(long h, _finddata_t *f)
{
PE_ASSERT(h >= 0 && h < (long)fileInfo.size());
if (h < 0 || h >= (long)fileInfo.size()) return -1;
_findinfo_t* fi = fileInfo[h];
while(true)
{
dirent* entry = readdir(fi->openedDir);
if(entry == 0) return -1;
// Only report stuff matching our filter
if (fnmatch(fi->filter.c_str(), entry->d_name, FNM_PATHNAME) != 0) continue;
// To reliably determine the entry's type, we must do
// a stat... don't rely on entry->d_type, as this
// might be unavailable!
struct stat filestat;
std::string fullPath = fi->dirName + entry->d_name;
if (stat(fullPath.c_str(), &filestat) != 0)
{
OUTPUT_LOG("Cannot stat %s\n", fullPath.c_str());
continue;
}
if (S_ISREG(filestat.st_mode))
{
f->attrib = _A_NORMAL;
} else if (S_ISDIR(filestat.st_mode))
{
f->attrib = _A_SUBDIR;
} else continue; // We are interested in files and
// directories only. Links currently
// are not supported.
f->size = filestat.st_size;
strncpy(f->name, entry->d_name, STRING_BUFFER_SIZE);
return 0;
}
return -1;
}
void AxisAlignedBox::merge(const Vector3& point)
{
switch (mExtent)
{
case EXTENT_NULL: // if null, use this point
setExtents(point, point);
return;
case EXTENT_FINITE:
mMaximum.makeCeil(point);
mMinimum.makeFloor(point);
return;
case EXTENT_INFINITE: // if infinite, makes no difference
return;
}
PE_ASSERT(false && "Never reached");
}
void AxisAlignedBox::transformAffine(const Matrix4& m)
{
PE_ASSERT(m.isAffine());
// Do nothing if current null or infinite
if (mExtent != EXTENT_FINITE)
return;
Vector3 centre = getCenter();
Vector3 halfSize = getHalfSize();
Vector3 newCentre = m.transformAffine(centre);
Vector3 newHalfSize(
Math::Abs(m[0][0]) * halfSize.x + Math::Abs(m[0][1]) * halfSize.y + Math::Abs(m[0][2]) * halfSize.z,
Math::Abs(m[1][0]) * halfSize.x + Math::Abs(m[1][1]) * halfSize.y + Math::Abs(m[1][2]) * halfSize.z,
Math::Abs(m[2][0]) * halfSize.x + Math::Abs(m[2][1]) * halfSize.y + Math::Abs(m[2][2]) * halfSize.z);
setExtents(newCentre - newHalfSize, newCentre + newHalfSize);
}
bool AxisAlignedBox::intersects(const Vector3& v) const
{
switch (mExtent)
{
case EXTENT_NULL:
return false;
case EXTENT_FINITE:
return(v.x >= mMinimum.x && v.x <= mMaximum.x &&
v.y >= mMinimum.y && v.y <= mMaximum.y &&
v.z >= mMinimum.z && v.z <= mMaximum.z);
case EXTENT_INFINITE:
return true;
default: // shut up compiler
PE_ASSERT(false && "Never reached");
return false;
}
}
ParaEngine::Vector3 AxisAlignedBox::getSize(void) const
{
switch (mExtent)
{
case EXTENT_NULL:
return Vector3::ZERO;
case EXTENT_FINITE:
return mMaximum - mMinimum;
case EXTENT_INFINITE:
return Vector3(
Math::POS_INFINITY,
Math::POS_INFINITY,
Math::POS_INFINITY);
default: // shut up compiler
PE_ASSERT(false && "Never reached");
return Vector3::ZERO;
}
}
float AxisAlignedBox::volume(void) const
{
switch (mExtent)
{
case EXTENT_NULL:
return 0.0f;
case EXTENT_FINITE:
{
Vector3 diff = mMaximum - mMinimum;
return diff.x * diff.y * diff.z;
}
case EXTENT_INFINITE:
return Math::POS_INFINITY;
default: // shut up compiler
PE_ASSERT(false && "Never reached");
return 0.0f;
}
}
