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90 lines
2.0 KiB
C
90 lines
2.0 KiB
C
/***********************************************************************
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* pc_pointlist.c
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*
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* Point list handling. Create, get and set values from the
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* basic PCPOINTLIST structure.
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*
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* Portions Copyright (c) 2012, OpenGeo
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*
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***********************************************************************/
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#include "pc_api_internal.h"
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#include <assert.h>
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PCPOINTLIST *
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pc_pointlist_make(uint32_t npoints)
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{
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PCPOINTLIST *pl = pcalloc(sizeof(PCPOINTLIST));
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pl->points = pcalloc(sizeof(PCPOINT*) * npoints);
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pl->maxpoints = npoints;
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pl->npoints = 0;
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pl->readonly = PC_FALSE;
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return pl;
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}
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void
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pc_pointlist_free(PCPOINTLIST *pl)
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{
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int i;
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for ( i = 0; i < pl->npoints; i++ )
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{
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pc_point_free(pl->points[i]);
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}
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pcfree(pl->points);
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pcfree(pl);
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return;
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}
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void
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pc_pointlist_add_point(PCPOINTLIST *pl, PCPOINT *pt)
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{
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if ( pl->npoints >= pl->maxpoints )
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{
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if ( pl->maxpoints < 1 ) pl->maxpoints = 1;
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pl->maxpoints *= 2;
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pl->points = pcrealloc(pl->points, pl->maxpoints * sizeof(PCPOINT*));
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}
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pl->points[pl->npoints] = pt;
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pl->npoints += 1;
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return;
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}
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PCPOINT *
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pc_pointlist_get_point(const PCPOINTLIST *pl, int i)
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{
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return pl->points[i];
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}
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PCPOINTLIST *
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pc_pointlist_from_dimensional(const PCPATCH_DIMENSIONAL *pdl)
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{
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PCPOINTLIST *pl;
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PCPATCH_DIMENSIONAL *pdl_uncompressed;
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const PCSCHEMA *schema = pdl->schema;
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int i, j, ndims, npoints;
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assert(pdl);
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pdl_uncompressed = pc_patch_dimensional_decompress(pdl);
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ndims = schema->ndims;
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npoints = pdl->npoints;
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pl = pc_pointlist_make(npoints);
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for ( i = 0; i < npoints; i++ )
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{
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PCPOINT *pt = pc_point_make(schema);
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for ( j = 0; j < ndims; j++ )
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{
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PCDIMENSION *dim = pc_schema_get_dimension(schema, j);
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uint8_t *in = pdl_uncompressed->bytes[j].bytes + dim->size * i;
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uint8_t *out = pt->data + dim->byteoffset;
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memcpy(out, in, dim->size);
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}
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pc_pointlist_add_point(pl, pt);
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}
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pc_patch_dimensional_free(pdl_uncompressed);
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return pl;
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} |