/*
* Get the total number of points in the base sequence class
*/
static size_t
get_real_point_count(const stp_curve_t *curve)
{
if (curve->piecewise)
return stp_sequence_get_size(curve->seq) / 2;
else
return stp_sequence_get_size(curve->seq);
}
/*
* Recompute the delta values for interpolation.
* When we actually do support spline curves, this routine will
* compute the second derivatives for that purpose, too.
*/
static void
compute_intervals(stp_curve_t *curve)
{
if (curve->interval)
{
stp_free(curve->interval);
curve->interval = NULL;
}
if (stp_sequence_get_size(curve->seq) > 0)
{
switch (curve->curve_type)
{
case STP_CURVE_TYPE_SPLINE:
compute_spline_deltas(curve);
break;
case STP_CURVE_TYPE_LINEAR:
compute_linear_deltas(curve);
break;
}
}
curve->recompute_interval = 0;
}
stp_array_t *
stp_array_create_from_xmltree(stp_mxml_node_t *array) /* The array node */
{
const char *stmp; /* Temporary string */
stp_mxml_node_t *child; /* Child sequence node */
int x_size, y_size;
size_t count;
stp_sequence_t *seq = NULL;
stp_array_t *ret = NULL;
stmp = stp_mxmlElementGetAttr(array, "x-size");
if (stmp)
{
x_size = (int) strtoul(stmp, NULL, 0);
}
else
{
stp_erprintf("stp_array_create_from_xmltree: \"x-size\" missing\n");
goto error;
}
/* Get y-size */
stmp = stp_mxmlElementGetAttr(array, "y-size");
if (stmp)
{
y_size = (int) strtoul(stmp, NULL, 0);
}
else
{
stp_erprintf("stp_array_create_from_xmltree: \"y-size\" missing\n");
goto error;
}
/* Get the sequence data */
child = stp_mxmlFindElement(array, array, "sequence", NULL, NULL, STP_MXML_DESCEND);
if (child)
seq = stp_sequence_create_from_xmltree(child);
if (seq == NULL)
goto error;
ret = stp_array_create(x_size, y_size);
if (ret->data)
stp_sequence_destroy(ret->data);
ret->data = seq;
count = stp_sequence_get_size(seq);
if (count != (x_size * y_size))
{
stp_erprintf("stp_array_create_from_xmltree: size mismatch between array and sequence\n");
goto error;
}
return ret;
error:
stp_erprintf("stp_array_create_from_xmltree: error during array read\n");
if (ret)
stp_array_destroy(ret);
return NULL;
}
