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fix agg::conv_clip_polygon validation

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This commit is contained in:
Dane Springmeyer 2015-02-15 13:01:57 -08:00
parent e1941f87f0
commit 435f329cef
1 changed files with 5 additions and 0 deletions
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5
benchmark/test_polygon_clipping.cpp
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@ -93,6 +93,7 @@ public:
extent_.maxy()); extent_.maxy());
unsigned cmd; unsigned cmd;
double x,y; double x,y;
clipped.rewind(0);
mapnik::geometry_type geom2(mapnik::geometry_type::types::Polygon); mapnik::geometry_type geom2(mapnik::geometry_type::types::Polygon);
while ((cmd = clipped.vertex(&x, &y)) != mapnik::SEG_END) { while ((cmd = clipped.vertex(&x, &y)) != mapnik::SEG_END) {
geom2.push_vertex(x,y,(mapnik::CommandType)cmd); geom2.push_vertex(x,y,(mapnik::CommandType)cmd);
@ -130,6 +131,10 @@ public:
extent_.maxy()); extent_.maxy());
unsigned cmd; unsigned cmd;
double x,y; double x,y;
// NOTE: this rewind is critical otherwise
// agg_conv_adapter_vpgen will give garbage
// values for the first vertex
clipped.rewind(0);
while ((cmd = clipped.vertex(&x, &y)) != mapnik::SEG_END) { while ((cmd = clipped.vertex(&x, &y)) != mapnik::SEG_END) {
count++; count++;
} }