+ remove mapnik:: classification from inside namespace mapnik {}
+ use c++ style casts!
This commit is contained in:
Artem Pavlenko
parent
e7bfba10fe
commit
21dee82146
1 changed files with 142 additions and 141 deletions
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@ -32,164 +32,165 @@
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#include <vector>
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using mapnik::color;
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using std::vector;
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namespace mapnik
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{
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struct MAPNIK_DECL color_band
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struct MAPNIK_DECL color_band
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{
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float value_;
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color color_;
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unsigned midpoints_;
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bool is_interpolated_;
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color_band(float value, color c)
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: value_(value),
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color_(c),
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midpoints_(0),
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is_interpolated_(false) {}
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const bool is_interpolated() const
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{
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float value_;
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color color_;
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unsigned midpoints_;
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bool is_interpolated_;
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color_band(float value, color c)
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: value_(value),
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color_(c),
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midpoints_(0),
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is_interpolated_(false) {}
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const bool is_interpolated() const
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{
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return is_interpolated_;
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}
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const unsigned get_midpoints() const
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{
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return midpoints_;
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}
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const float get_value() const
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{
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return value_;
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}
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const color& get_color() const
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{
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return color_;
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}
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bool operator==(color_band const& other) const
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{
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return value_ == other.value_ && color_ == other.color_;
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}
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std::string to_string() const
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{
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std::stringstream ss;
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ss << color_.to_string() << " " << value_;
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return ss.str();
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}
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};
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typedef vector<color_band> color_bands;
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struct MAPNIK_DECL raster_colorizer
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return is_interpolated_;
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}
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const unsigned get_midpoints() const
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{
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explicit raster_colorizer()
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: colors_() {}
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return midpoints_;
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}
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const float get_value() const
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{
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return value_;
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}
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const color& get_color() const
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{
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return color_;
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}
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bool operator==(color_band const& other) const
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{
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return value_ == other.value_ && color_ == other.color_;
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}
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std::string to_string() const
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{
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std::stringstream ss;
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ss << color_.to_string() << " " << value_;
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return ss.str();
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}
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};
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raster_colorizer(const raster_colorizer &ps)
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: colors_(ps.colors_) {}
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typedef std::vector<color_band> color_bands;
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raster_colorizer(color_bands &colors)
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: colors_(colors) {}
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struct MAPNIK_DECL raster_colorizer
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{
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explicit raster_colorizer()
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: colors_() {}
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const color_bands& get_color_bands() const
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{
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return colors_;
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}
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void append_band (color_band band)
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{
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if (colors_.size() > 0 && colors_.back().value_ > band.value_) {
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raster_colorizer(const raster_colorizer &ps)
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: colors_(ps.colors_) {}
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raster_colorizer(color_bands &colors)
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: colors_(colors) {}
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const color_bands& get_color_bands() const
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{
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return colors_;
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}
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void append_band (color_band band)
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{
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if (colors_.size() > 0 && colors_.back().value_ > band.value_) {
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#ifdef MAPNIK_DEBUG
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std::clog << "prev.v=" << colors_.back().value_ << ". band.v=" << band.value_ << "\n";
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std::clog << "prev.v=" << colors_.back().value_ << ". band.v=" << band.value_ << "\n";
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#endif
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throw config_error(
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"Bands must be appended in ascending value order"
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);
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}
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colors_.push_back(band);
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}
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void append_band (color_band band, unsigned midpoints)
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{
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band.midpoints_ = midpoints;
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if (colors_.size() > 0 && midpoints > 0) {
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color_band lo = colors_.back();
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color_band const &hi = band;
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int steps = midpoints+1;
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float dv = (hi.value_ - lo.value_)/steps;
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float da = (float(hi.color_.alpha()) - lo.color_.alpha())/steps;
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float dr = (float(hi.color_.red()) - lo.color_.red())/steps;
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float dg = (float(hi.color_.green()) - lo.color_.green())/steps;
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float db = (float(hi.color_.blue()) - lo.color_.blue())/steps;
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throw config_error(
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"Bands must be appended in ascending value order"
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);
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}
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colors_.push_back(band);
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}
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void append_band (color_band band, unsigned midpoints)
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{
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band.midpoints_ = midpoints;
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if (colors_.size() > 0 && midpoints > 0) {
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color_band lo = colors_.back();
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color_band const &hi = band;
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int steps = midpoints+1;
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float dv = (hi.value_ - lo.value_)/steps;
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float da = (float(hi.color_.alpha()) - lo.color_.alpha())/steps;
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float dr = (float(hi.color_.red()) - lo.color_.red())/steps;
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float dg = (float(hi.color_.green()) - lo.color_.green())/steps;
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float db = (float(hi.color_.blue()) - lo.color_.blue())/steps;
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#ifdef MAPNIK_DEBUG
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std::clog << "lo.v=" << lo.value_ << ", hi.v=" << hi.value_ << ", dv="<<dv<<"\n";
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std::clog << "lo.v=" << lo.value_ << ", hi.v=" << hi.value_ << ", dv="<<dv<<"\n";
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#endif
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// interpolate intermediate values and colors
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int j;
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for (j=1; j<steps; j++) {
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color_band b(
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lo.get_value() + dv*j,
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color(int(float(lo.color_.red()) + dr*j),
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int(float(lo.color_.green()) + dg*j),
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int(float(lo.color_.blue()) + db*j),
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int(float(lo.color_.alpha()) + da*j)
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)
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);
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b.is_interpolated_ = true;
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append_band(b);
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}
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}
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append_band(band);
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}
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// interpolate intermediate values and colors
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int j;
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for (j=1; j<steps; j++) {
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color_band b(
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lo.get_value() + dv*j,
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color(int(float(lo.color_.red()) + dr*j),
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int(float(lo.color_.green()) + dg*j),
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int(float(lo.color_.blue()) + db*j),
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int(float(lo.color_.alpha()) + da*j)
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)
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);
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b.is_interpolated_ = true;
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append_band(b);
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}
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}
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append_band(band);
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}
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void append_band (float value, color c)
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{
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append_band(color_band(value, c));
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}
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void append_band (float value, color c)
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{
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append_band(color_band(value, c));
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}
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void append_band (float value, color c, unsigned midpoints)
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{
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append_band(color_band(value, c), midpoints);
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}
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void append_band (float value, color c, unsigned midpoints)
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{
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append_band(color_band(value, c), midpoints);
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}
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/* rgba =
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* if cs[pos].value <= value < cs[pos+1].value: cs[pos].color
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* otherwise: transparent
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* where 0 <= pos < length(bands)-1
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* Last band is special, its value represents the upper bound and its
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* color will only be used if the value matches its value exactly.
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*/
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color get_color(float value) const {
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int pos=-1, last=(int)colors_.size()-1, lo=0, hi=last;
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while (lo<=hi) {
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pos = (lo+hi)/2;
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if (colors_[pos].value_<value) {
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lo = pos+1;
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} else if (colors_[pos].value_>value) {
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hi = pos-1;
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} else {
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lo = pos+1;
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break;
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}
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}
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lo--;
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if ((0 <= lo && lo < last) ||
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(lo==last && colors_[last].value_==value))
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return colors_[lo].color_;
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else
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return color(0,0,0,0);
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}
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/* rgba =
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* if cs[pos].value <= value < cs[pos+1].value: cs[pos].color
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* otherwise: transparent
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* where 0 <= pos < length(bands)-1
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* Last band is special, its value represents the upper bound and its
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* color will only be used if the value matches its value exactly.
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*/
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color get_color(float value) const {
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int pos=-1, last=(int)colors_.size()-1, lo=0, hi=last;
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while (lo<=hi) {
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pos = (lo+hi)/2;
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if (colors_[pos].value_<value) {
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lo = pos+1;
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} else if (colors_[pos].value_>value) {
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hi = pos-1;
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} else {
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lo = pos+1;
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break;
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}
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}
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lo--;
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if ((0 <= lo && lo < last) ||
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(lo==last && colors_[last].value_==value))
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return colors_[lo].color_;
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else
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return color(0,0,0,0);
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}
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void colorize(mapnik::raster_ptr const& raster) const {
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float *rasterData = (float*)raster->data_.getBytes();
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unsigned *imageData = raster->data_.getData();
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unsigned i;
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for (i=0; i<raster->data_.width()*raster->data_.height(); i++)
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imageData[i] = get_color(rasterData[i]).rgba();
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}
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void colorize(raster_ptr const& raster) const
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{
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float *rasterData = reinterpret_cast<float*>(raster->data_.getBytes());
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unsigned *imageData = raster->data_.getData();
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unsigned i;
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for (i=0; i<raster->data_.width()*raster->data_.height(); i++)
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{
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imageData[i] = get_color(rasterData[i]).rgba();
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}
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}
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private:
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color_bands colors_;
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};
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private:
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color_bands colors_;
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};
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typedef boost::shared_ptr<mapnik::raster_colorizer> raster_colorizer_ptr;
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}
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typedef boost::shared_ptr<raster_colorizer> raster_colorizer_ptr;
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} // mapnik namespace
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#endif //RASTER_COLORIZER_HPP
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