sij/mapnik
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

move ellipse contruction code to marker_helpers

Browse source
This commit is contained in:
Dane Springmeyer 2012-07-31 16:40:30 -07:00
parent 4d2eb73e3b
commit c3c2902b92
2 changed files with 53 additions and 39 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

48
include/mapnik/marker_helpers.hpp
View file

@ -27,12 +27,51 @@
#include <mapnik/markers_symbolizer.hpp>
#include <mapnik/expression_evaluator.hpp>
#include <mapnik/svg/svg_path_attributes.hpp>
#include <mapnik/svg/svg_converter.hpp>
#include <mapnik/svg/svg_storage.hpp>
// agg
#include "agg_ellipse.h"
// boost
#include <boost/optional.hpp>
namespace mapnik {
template <typename T>
void build_ellipse(T const& sym, mapnik::feature_impl const& feature, svg_storage_type & marker_ellipse, svg::svg_path_adapter & svg_path)
{
expression_ptr const& width_expr = sym.get_width();
expression_ptr const& height_expr = sym.get_height();
double width = 0;
double height = 0;
if (width_expr && height_expr)
{
width = boost::apply_visitor(evaluate<Feature,value_type>(feature), *width_expr).to_double();
height = boost::apply_visitor(evaluate<Feature,value_type>(feature), *height_expr).to_double();
}
else if (width_expr)
{
width = boost::apply_visitor(evaluate<Feature,value_type>(feature), *width_expr).to_double();
height = width;
}
else if (height_expr)
{
height = boost::apply_visitor(evaluate<Feature,value_type>(feature), *height_expr).to_double();
width = height;
}
svg::svg_converter_type styled_svg(svg_path, marker_ellipse.attributes());
styled_svg.push_attr();
styled_svg.begin_path();
agg::ellipse c(0, 0, width/2.0, height/2.0);
styled_svg.storage().concat_path(c);
styled_svg.end_path();
styled_svg.pop_attr();
double lox,loy,hix,hiy;
styled_svg.bounding_rect(&lox, &loy, &hix, &hiy);
marker_ellipse.set_bounding_box(lox,loy,hix,hiy);
}
template <typename Attr>
bool push_explicit_style(Attr const& src, Attr & dst, markers_symbolizer const& sym)
{
@ -42,10 +81,12 @@ bool push_explicit_style(Attr const& src, Attr & dst, markers_symbolizer const&
boost::optional<float> const& fill_opacity = sym.get_fill_opacity();
if (strk || fill || opacity || fill_opacity)
{
bool success = false;
for(unsigned i = 0; i < src.size(); ++i)
{
mapnik::svg::path_attributes attr = src[i];
success = true;
dst.push_back(src[i]);
mapnik::svg::path_attributes & attr = dst.last();
if (attr.stroke_flag)
{
// TODO - stroke attributes need to be boost::optional
@ -87,9 +128,8 @@ bool push_explicit_style(Attr const& src, Attr & dst, markers_symbolizer const&
attr.fill_opacity = *fill_opacity;
}
}
dst.push_back(attr);
}
return true;
return success;
}
return false;
}

44
src/agg/process_markers_symbolizer.cpp
View file

@ -33,7 +33,6 @@
#include <mapnik/marker_helpers.hpp>
#include <mapnik/svg/svg_renderer.hpp>
#include <mapnik/svg/svg_storage.hpp>
#include <mapnik/svg/svg_converter.hpp>
#include <mapnik/svg/svg_path_adapter.hpp>
#include <mapnik/svg/svg_path_attributes.hpp>
#include <mapnik/markers_placement.hpp>
@ -41,7 +40,6 @@
// agg
#include "agg_basics.h"
#include "agg_ellipse.h"
#include "agg_rendering_buffer.h"
#include "agg_pixfmt_rgba.h"
#include "agg_rasterizer_scanline_aa.h"
@ -317,12 +315,15 @@ void agg_renderer<T>::process(markers_symbolizer const& sym,
{
using namespace mapnik::svg;
typedef agg::renderer_scanline_aa_solid<renderer_base> renderer_type;
typedef agg::pod_bvector<path_attributes> svg_attribute_type;
typedef svg_renderer<svg_path_adapter,
agg::pod_bvector<path_attributes>,
svg_attribute_type,
renderer_type,
agg::pixfmt_rgba32 > svg_renderer_type;
typedef vector_markers_rasterizer_dispatch<buffer_type, svg_renderer_type, rasterizer, detector_type> dispatch_type;
typedef vector_markers_rasterizer_dispatch<buffer_type,
svg_renderer_type,
rasterizer,
detector_type > dispatch_type;
boost::optional<svg_path_ptr> const& stock_vector_marker = (*mark)->get_vector_data();
expression_ptr const& width_expr = sym.get_width();
expression_ptr const& height_expr = sym.get_height();
@ -332,38 +333,11 @@ void agg_renderer<T>::process(markers_symbolizer const& sym,
if (filename == "shape://ellipse"
&& (width_expr || height_expr))
{
double width = 0;
double height = 0;
if (width_expr && height_expr)
{
width = boost::apply_visitor(evaluate<Feature,value_type>(feature), *width_expr).to_double();
height = boost::apply_visitor(evaluate<Feature,value_type>(feature), *height_expr).to_double();
}
else if (width_expr)
{
width = boost::apply_visitor(evaluate<Feature,value_type>(feature), *width_expr).to_double();
height = width;
}
else if (height_expr)
{
height = boost::apply_visitor(evaluate<Feature,value_type>(feature), *height_expr).to_double();
width = height;
}
// create a new marker
svg_storage_type marker_ellipse;
vertex_stl_adapter<svg_path_storage> stl_storage(marker_ellipse.source());
svg_path_adapter svg_path(stl_storage);
svg_converter_type styled_svg(svg_path, marker_ellipse.attributes());
styled_svg.push_attr();
styled_svg.begin_path();
agg::ellipse c(0, 0, width/2.0, height/2.0);
styled_svg.storage().concat_path(c);
styled_svg.end_path();
styled_svg.pop_attr();
double lox,loy,hix,hiy;
styled_svg.bounding_rect(&lox, &loy, &hix, &hiy);
marker_ellipse.set_bounding_box(lox,loy,hix,hiy);
agg::pod_bvector<path_attributes> attributes;
build_ellipse(sym, feature, marker_ellipse, svg_path);
svg_attribute_type attributes;
bool result = push_explicit_style( (*stock_vector_marker)->attributes(), attributes, sym);
svg_renderer_type svg_renderer(svg_path, result ? attributes : (*stock_vector_marker)->attributes());
evaluate_transform(tr, feature, sym.get_image_transform());
@ -393,7 +367,7 @@ void agg_renderer<T>::process(markers_symbolizer const& sym,
agg::trans_affine marker_trans = recenter * tr;
vertex_stl_adapter<svg_path_storage> stl_storage((*stock_vector_marker)->source());
svg_path_adapter svg_path(stl_storage);
agg::pod_bvector<path_attributes> attributes;
svg_attribute_type attributes;
bool result = push_explicit_style( (*stock_vector_marker)->attributes(), attributes, sym);
svg_renderer_type svg_renderer(svg_path, result ? attributes : (*stock_vector_marker)->attributes());
dispatch_type rasterizer_dispatch(*current_buffer_,svg_renderer,*ras_ptr,