// add the given Displayable as a child (assuming it is one)
void Displayable::add_child(Displayable *d) {
// append child to list of children
children[num_children++] = d;
if (num_children == max_children) {
void *tmp = vmd_alloc(max_children*2*sizeof(Displayable*));
memcpy(tmp,children,max_children*sizeof(Displayable*));
vmd_dealloc(children);
children = (Displayable **)tmp;
max_children *= 2;
}
}
// function to resize allocations depending on whether or not the allocator
// provides a realloc() function or not.
void * vmd_resize_alloc(void *ptr, size_t oldsize, size_t newsize) {
void *newptr=NULL;
if (ptr == NULL) {
newptr = vmd_alloc(newsize);
return newptr;
}
if (vmd_realloc != NULL) {
newptr = vmd_realloc(ptr, newsize);
}
if (newptr == NULL) {
newptr = vmd_alloc(newsize);
if (newptr != NULL) {
memcpy(newptr, ptr, oldsize);
vmd_dealloc(ptr);
}
}
return newptr;
}
int VolumeTexture::allocateTextureMap(int npixels) {
texid = 0;
if (texmap) {
vmd_dealloc(texmap);
texmap = NULL;
}
texmap = (unsigned char *) vmd_alloc(npixels*3*sizeof(unsigned char));
if (texmap == NULL) {
msgErr << "Texture map allocation failed, out of memory?" << sendmsg;
return FALSE;
}
memset(texmap, 0, npixels*3*sizeof(unsigned char));
texid = VMDApp::get_texserialnum();
return TRUE;
}
// does all the creation work after variables have been initialized
void Displayable::do_create() {
children = (Displayable **)vmd_alloc(16*sizeof(Displayable*));
num_children = 0;
max_children = 16;
// initialize the display command list
cmdList = new VMDDisplayList;
// initialize flags and scalar settings
needMatrixRecalc = TRUE;
isFixed = FALSE;
// initialize display list
cmdList->mat = tm;
}
void *Displayable::operator new(size_t n) {
return vmd_alloc(n);
}
