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/***********************************************************************
* pc_pointlist.c
*
* Point list handling. Create, get and set values from the
* basic PCPOINTLIST structure.
*
* PgSQL Pointcloud is free and open source software provided
* by the Government of Canada
* Copyright (c) 2013 Natural Resources Canada
*
***********************************************************************/
#include "pc_api_internal.h"
#include <assert.h>
PCPOINTLIST *pc_pointlist_make(uint32_t npoints)
{
PCPOINTLIST *pl = pcalloc(sizeof(PCPOINTLIST));
pl->points = pcalloc(sizeof(PCPOINT *) * npoints);
pl->maxpoints = npoints;
pl->npoints = 0;
pl->mem = NULL;
return pl;
}
void pc_pointlist_free(PCPOINTLIST *pl)
{
int i;
for (i = 0; i < pl->npoints; i++)
{
pc_point_free(pl->points[i]);
}
if (pl->mem)
pcfree(pl->mem);
pcfree(pl->points);
pcfree(pl);
return;
}
void pc_pointlist_add_point(PCPOINTLIST *pl, PCPOINT *pt)
{
if (pl->npoints >= pl->maxpoints)
{
if (pl->maxpoints < 1)
pl->maxpoints = 1;
pl->maxpoints *= 2;
pl->points = pcrealloc(pl->points, pl->maxpoints * sizeof(PCPOINT *));
}
pl->points[pl->npoints] = pt;
pl->npoints += 1;
return;
}
PCPOINT *pc_pointlist_get_point(const PCPOINTLIST *pl, int i)
{
return pl->points[i];
}
PCPOINTLIST *pc_pointlist_from_dimensional(const PCPATCH_DIMENSIONAL *pdl)
{
PCPOINTLIST *pl;
PCPATCH_DIMENSIONAL *pdl_uncompressed;
const PCSCHEMA *schema = pdl->schema;
int i, j, ndims, npoints;
uint8_t *data;
assert(pdl);
pdl_uncompressed = pc_patch_dimensional_decompress(pdl);
ndims = schema->ndims;
npoints = pdl->npoints;
pl = pc_pointlist_make(npoints);
pl->mem = data = pcalloc(npoints * schema->size);
for (i = 0; i < npoints; i++)
{
PCPOINT *pt = pc_point_from_data(schema, data);
for (j = 0; j < ndims; j++)
{
PCDIMENSION *dim = pc_schema_get_dimension(schema, j);
uint8_t *in = pdl_uncompressed->bytes[j].bytes + dim->size * i;
uint8_t *out = data + dim->byteoffset;
memcpy(out, in, dim->size);
}
pc_pointlist_add_point(pl, pt);
data += schema->size;
}
pc_patch_dimensional_free(pdl_uncompressed);
return pl;
}
PCPOINTLIST *pc_pointlist_from_uncompressed(const PCPATCH_UNCOMPRESSED *patch)
{
int i;
PCPOINTLIST *pl;
size_t pt_size = patch->schema->size;
uint32_t npoints = patch->npoints;
pl = pc_pointlist_make(npoints);
for (i = 0; i < npoints; i++)
{
pc_pointlist_add_point(
pl, pc_point_from_data(patch->schema, patch->data + i * pt_size));
}
return pl;
}
PCPOINTLIST *pc_pointlist_from_patch(const PCPATCH *patch)
{
switch (patch->type)
{
case PC_NONE:
{
return pc_pointlist_from_uncompressed((PCPATCH_UNCOMPRESSED *)patch);
}
case PC_DIMENSIONAL:
{
return pc_pointlist_from_dimensional((PCPATCH_DIMENSIONAL *)patch);
}
case PC_LAZPERF:
{
return pc_pointlist_from_lazperf((PCPATCH_LAZPERF *)patch);
}
}
/* Don't get here */
pcerror("pc_pointlist_from_patch: unsupported compression type %d",
patch->type);
return NULL;
}
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