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grid_renderer: only clamp markers size if initial grid resolution is reduced

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This commit is contained in:
Dane Springmeyer 2011-06-04 00:20:29 +00:00
parent 7da40e3700
commit 104dd25a94
1 changed files with 12 additions and 4 deletions
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12
src/grid/process_markers_symbolizer.cpp
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@ -132,10 +132,18 @@ void grid_renderer<T>::process(markers_symbolizer const& sym,
stroke const& stroke_ = sym.get_stroke();
double strk_width = stroke_.get_width();
double w;
double h;
unsigned int res = pixmap_.get_resolution();
if (res != 1) {
// clamp to at least 4 px otherwise interactive pixels can be too small
double min = static_cast<double>(4/pixmap_.get_resolution());
double w = std::max(sym.get_width()/pixmap_.get_resolution(),min);
double h = std::max(sym.get_height()/pixmap_.get_resolution(),min);
w = std::max(sym.get_width()/res,min);
h = std::max(sym.get_height()/res,min);
} else {
w = sym.get_width()/res;
h = sym.get_height()/res;
}
arrow arrow_;
box2d<double> extent;