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Make clusters look better by averaging locations of clustered points

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Eric Fischer
2018-03-01 16:53:59 -08:00
parent 61cbc3eca0
commit 18e345efb0
8 changed files with 3894 additions and 3874 deletions
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tile.cpp
+13
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@@ -1758,6 +1758,19 @@ long long write_tile(FILE *geoms, long long *geompos_in, char *metabase, char *s
indices.push_back(sf.index);
if ((sf.index < merge_previndex || sf.index - merge_previndex < mingap) && find_partial(partials, sf, which_partial, layer_unmaps)) {
partials[which_partial].clustered++;
if (partials[which_partial].t == VT_POINT &&
partials[which_partial].geoms.size() == 1 &&
partials[which_partial].geoms[0].size() == 1 &&
sf.geometry.size() == 1) {
double x = (double) partials[which_partial].geoms[0][0].x * partials[which_partial].clustered;
double y = (double) partials[which_partial].geoms[0][0].y * partials[which_partial].clustered;
x += sf.geometry[0].x;
y += sf.geometry[0].y;
partials[which_partial].geoms[0][0].x = x / (partials[which_partial].clustered + 1);
partials[which_partial].geoms[0][0].y = y / (partials[which_partial].clustered + 1);
}
preserve_attributes(arg->attribute_accum, attribute_accum_state, sf, stringpool, pool_off, partials[which_partial]);
continue;
}