void WorldFold::resetWorldFold()
{
for (int i = 0; i < MAX_WORLD_FOLDS; i++)
{
worldFoldMatrix[i].CreateIdentityMatrix();
worldFoldResultMatrix[i].CreateIdentityMatrix();
worldFoldExists[i] = false;
worldFoldKey[i] = 1;
}
worldFoldCenter = VC3(0,0,0);
wfCameraMatrix.CreateIdentityMatrix();
wfCameraPosition = VC3(0,0,0);
}
void WorldFold::setCameraPosition(const VC3 &position)
{
if (fabs(wfCameraPosition.x - position.x) > 0.001f)
{
// TODO: rotate camera toward half angle when approacing a fold...
// once past the fold, on the other side, flip rotation to negative half angle to match new fold
wfCameraMatrix.CreateIdentityMatrix();
// TODO: update only if camera matrix has changed.
worldFoldMatrixUpdate(CENTER_WORLD_FOLD_INDEX);
wfCameraPosition = position;
}
}
void worldFoldMatrixUpdate(int fromIndex)
{
assert(fromIndex >= 0);
assert(fromIndex < MAX_WORLD_FOLDS);
if (fromIndex == CENTER_WORLD_FOLD_INDEX)
{
int i = CENTER_WORLD_FOLD_INDEX;
worldFoldResultMatrix[i] = worldFoldMatrix[i];
worldFoldKey[i] = (((worldFoldKey[i] + 1) & 0x000fffff) | (i << 20));
}
if (fromIndex <= CENTER_WORLD_FOLD_INDEX)
{
MAT result;
result.CreateIdentityMatrix();
for (int i = fromIndex; i >= 0; i--)
{
worldFoldResultMatrix[i] = result*worldFoldMatrix[i];
result = worldFoldResultMatrix[i];
worldFoldKey[i] = (((worldFoldKey[i] + 1) & 0x000fffff) | (i << 20));
}
}
if (fromIndex >= CENTER_WORLD_FOLD_INDEX)
{
MAT result;
result.CreateIdentityMatrix();
for (int i = fromIndex; i < MAX_WORLD_FOLDS; i++)
{
worldFoldResultMatrix[i] = result*worldFoldMatrix[i];
result = worldFoldResultMatrix[i];
worldFoldKey[i] = (((worldFoldKey[i] + 1) & 0x000fffff) | (i << 20));
}
}
}