void ot_newroot(OT_NODE **root_ptr)
{
OT_NODE *newroot;
int dx, dy, dz, index;
newroot = (OT_NODE *)POV_CALLOC(1, sizeof(OT_NODE), "octree node");
#ifdef RADSTATS
ot_nodecount++;
#endif
ot_parent(&newroot->Id, &((*root_ptr)->Id)); // sets the x/y/z/size id
// Function: decide which child of the new root the old root is. Theory:
// x,y,z values are measured in block sizes, and are a factor of 2 smaller
// at each level higher. The parent of both (3,4,5,k) and (2,5,4,k) is
// (1,2,2,k+1), so the oddness of the child's ordinates determines which
// child it is, and hence the value of the index into the parent's array of
// children. First half of array (4 entries) is kids with low/even x;
// First half of those is kids with low/even y (2 entries), and the very
// first entry is the one with low/even everything.
dx = ((*root_ptr)->Id.x & 1) * 4;
dy = ((*root_ptr)->Id.y & 1) * 2;
dz = ((*root_ptr)->Id.z & 1);
index = dx + dy + dz;
newroot->Kids[index] = *root_ptr;
*root_ptr = newroot;
// CLi moved C99_COMPATIBLE_RADIOSITY check from ot_newroot() to ot_ins() NULL root handling section
// (no need to do this again and again for every new node inserted)
}
BLEND_MAP_ENTRY *Create_BMap_Entries (int Map_Size)
{
BLEND_MAP_ENTRY *New;
New = (BLEND_MAP_ENTRY *)POV_CALLOC(Map_Size, sizeof (BLEND_MAP_ENTRY), "blend map entry");
return (New);
}
BLEND_MAP_ENTRY *Create_BMap_Entries (int Map_Size)
{
BLEND_MAP_ENTRY *New;
New = reinterpret_cast<BLEND_MAP_ENTRY *>(POV_CALLOC(Map_Size, sizeof (BLEND_MAP_ENTRY), "blend map entry"));
return (New);
}
IMAGE *Create_Image()
{
IMAGE *Image;
Image = (IMAGE *) POV_CALLOC(1, sizeof(IMAGE), "image file");
Image->References = 1;
Image->File_Type = NO_FILE;
Image->Image_Type = 0;
Image->Map_Type = PLANAR_MAP;
Image->Interpolation_Type = NO_INTERPOLATION;
Image->iwidth = Image->iheight = 0;
Image->width = Image->height = 0.0;
Image->Once_Flag = false;
Make_UV_Vector(Image->Offset,0.0,0.0);
Image->Use_Colour_Flag = false;
Make_Vector(Image->Gradient, 1.0, -1.0, 0.0);
Image->AllFilter = 0;
Image->AllTransmit = 0;
Image->Colour_Map_Size = 0;
Image->Colour_Map = NULL;
Image->Object = NULL;
return (Image);
}
