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Count drawing operations, not ops and coordinates equally

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This commit is contained in:
Eric Fischer
2014-09-23 18:19:06 -07:00
parent e8c3177725
commit a8907362bd
1 changed files with 17 additions and 13 deletions
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tile.cc
+17 -13
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@@ -43,7 +43,13 @@ static inline int compress(std::string const& input, std::string& output) {
return 0; return 0;
} }
int decode_feature(char **meta, long long *out, int z, unsigned tx, unsigned ty, int detail) { struct draw {
int op;
long long x;
long long y;
};
int decode_feature(char **meta, struct draw *out, int z, unsigned tx, unsigned ty, int detail) {
int len = 0; int len = 0;
while (1) { while (1) {
@@ -55,11 +61,9 @@ int decode_feature(char **meta, long long *out, int z, unsigned tx, unsigned ty,
} }
if (out != NULL) { if (out != NULL) {
out[len] = op; out[len].op = op;
} }
len++;
if (op == VT_MOVETO || op == VT_LINETO) { if (op == VT_MOVETO || op == VT_LINETO) {
int wx, wy; int wx, wy;
deserialize_int(meta, &wx); deserialize_int(meta, &wx);
@@ -77,18 +81,18 @@ int decode_feature(char **meta, long long *out, int z, unsigned tx, unsigned ty,
wwy >>= (32 - detail - z); wwy >>= (32 - detail - z);
if (out != NULL) { if (out != NULL) {
out[len] = wwx; out[len].x = wwx;
out[len + 1] = wwy; out[len].y = wwy;
} }
len += 2;
} }
len++;
} }
return len; return len;
} }
int draw(long long *geom, int n, mapnik::vector::tile_feature *feature) { int draw(struct draw *geom, int n, mapnik::vector::tile_feature *feature) {
int px = 0, py = 0; int px = 0, py = 0;
int cmd_idx = -1; int cmd_idx = -1;
int cmd = -1; int cmd = -1;
@@ -97,7 +101,7 @@ int draw(long long *geom, int n, mapnik::vector::tile_feature *feature) {
int i = 0; int i = 0;
while (i < n) { while (i < n) {
int op = geom[i++]; int op = geom[i++].op;
if (op != cmd) { if (op != cmd) {
if (cmd_idx >= 0) { if (cmd_idx >= 0) {
@@ -116,8 +120,8 @@ int draw(long long *geom, int n, mapnik::vector::tile_feature *feature) {
} }
if (op == VT_MOVETO || op == VT_LINETO) { if (op == VT_MOVETO || op == VT_LINETO) {
long long wwx = geom[i++]; long long wwx = geom[i - 1].x;
long long wwy = geom[i++]; long long wwy = geom[i - 1].y;
int dx = wwx - px; int dx = wwx - px;
int dy = wwy - py; int dy = wwy - py;
@@ -205,7 +209,7 @@ void write_tile(struct index *start, struct index *end, char *metabase, unsigned
} }
int len = decode_feature(&meta, NULL, z, tx, ty, detail); int len = decode_feature(&meta, NULL, z, tx, ty, detail);
long long geom[len]; struct draw geom[len];
meta = metabase + i->fpos; meta = metabase + i->fpos;
deserialize_int(&meta, &t); deserialize_int(&meta, &t);