488 lines
17 KiB
C++
488 lines
17 KiB
C++
/*****************************************************************************
|
|
*
|
|
* This file is part of Mapnik (c++ mapping toolkit)
|
|
*
|
|
* Copyright (C) 2011 Artem Pavlenko
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
*****************************************************************************/
|
|
|
|
// mapnik
|
|
#include <mapnik/agg_renderer.hpp>
|
|
#include <mapnik/agg_rasterizer.hpp>
|
|
#include <mapnik/agg_helpers.hpp>
|
|
#include <mapnik/graphics.hpp>
|
|
|
|
#include <mapnik/rule.hpp>
|
|
#include <mapnik/debug.hpp>
|
|
#include <mapnik/layer.hpp>
|
|
#include <mapnik/label_collision_detector.hpp>
|
|
#include <mapnik/feature_type_style.hpp>
|
|
#include <mapnik/marker.hpp>
|
|
#include <mapnik/marker_cache.hpp>
|
|
#include <mapnik/unicode.hpp>
|
|
#include <mapnik/font_set.hpp>
|
|
#include <mapnik/parse_path.hpp>
|
|
#include <mapnik/map.hpp>
|
|
#include <mapnik/svg/svg_converter.hpp>
|
|
#include <mapnik/svg/svg_renderer_agg.hpp>
|
|
#include <mapnik/svg/svg_path_adapter.hpp>
|
|
#include <mapnik/pixel_position.hpp>
|
|
|
|
#include <mapnik/image_compositing.hpp>
|
|
#include <mapnik/image_filter.hpp>
|
|
#include <mapnik/image_util.hpp>
|
|
#include "agg_rendering_buffer.h"
|
|
#include "agg_pixfmt_rgba.h"
|
|
#include "agg_color_rgba.h"
|
|
#include "agg_scanline_u.h"
|
|
#include "agg_image_filters.h"
|
|
#include "agg_trans_bilinear.h"
|
|
#include "agg_span_allocator.h"
|
|
#include "agg_image_accessors.h"
|
|
#include "agg_span_image_filter_rgba.h"
|
|
// boost
|
|
#include <boost/make_shared.hpp>
|
|
#include <boost/math/special_functions/round.hpp>
|
|
|
|
// stl
|
|
#include <cmath>
|
|
|
|
namespace mapnik
|
|
{
|
|
|
|
template <typename T>
|
|
agg_renderer<T>::agg_renderer(Map const& m, T & pixmap, double scale_factor, unsigned offset_x, unsigned offset_y)
|
|
: feature_style_processor<agg_renderer>(m, scale_factor),
|
|
pixmap_(pixmap),
|
|
internal_buffer_(),
|
|
current_buffer_(&pixmap),
|
|
style_level_compositing_(false),
|
|
width_(pixmap_.width()),
|
|
height_(pixmap_.height()),
|
|
scale_factor_(scale_factor),
|
|
t_(m.width(),m.height(),m.get_current_extent(),offset_x,offset_y),
|
|
font_engine_(),
|
|
font_manager_(font_engine_),
|
|
detector_(boost::make_shared<label_collision_detector4>(box2d<double>(-m.buffer_size(), -m.buffer_size(), m.width() + m.buffer_size() ,m.height() + m.buffer_size()))),
|
|
ras_ptr(new rasterizer),
|
|
query_extent_(),
|
|
gamma_method_(GAMMA_POWER),
|
|
gamma_(1.0)
|
|
{
|
|
setup(m);
|
|
}
|
|
|
|
template <typename T>
|
|
agg_renderer<T>::agg_renderer(Map const& m, request const& req, T & pixmap, double scale_factor, unsigned offset_x, unsigned offset_y)
|
|
: feature_style_processor<agg_renderer>(m, scale_factor),
|
|
pixmap_(pixmap),
|
|
internal_buffer_(),
|
|
current_buffer_(&pixmap),
|
|
style_level_compositing_(false),
|
|
width_(pixmap_.width()),
|
|
height_(pixmap_.height()),
|
|
scale_factor_(scale_factor),
|
|
t_(req.width(),req.height(),req.extent(),offset_x,offset_y),
|
|
font_engine_(),
|
|
font_manager_(font_engine_),
|
|
detector_(boost::make_shared<label_collision_detector4>(box2d<double>(-req.buffer_size(), -req.buffer_size(), req.width() + req.buffer_size() ,req.height() + req.buffer_size()))),
|
|
ras_ptr(new rasterizer),
|
|
query_extent_(),
|
|
gamma_method_(GAMMA_POWER),
|
|
gamma_(1.0)
|
|
{
|
|
setup(m);
|
|
}
|
|
|
|
template <typename T>
|
|
agg_renderer<T>::agg_renderer(Map const& m, T & pixmap, boost::shared_ptr<label_collision_detector4> detector,
|
|
double scale_factor, unsigned offset_x, unsigned offset_y)
|
|
: feature_style_processor<agg_renderer>(m, scale_factor),
|
|
pixmap_(pixmap),
|
|
internal_buffer_(),
|
|
current_buffer_(&pixmap),
|
|
style_level_compositing_(false),
|
|
width_(pixmap_.width()),
|
|
height_(pixmap_.height()),
|
|
scale_factor_(scale_factor),
|
|
t_(m.width(),m.height(),m.get_current_extent(),offset_x,offset_y),
|
|
font_engine_(),
|
|
font_manager_(font_engine_),
|
|
detector_(detector),
|
|
ras_ptr(new rasterizer),
|
|
query_extent_(),
|
|
gamma_method_(GAMMA_POWER),
|
|
gamma_(1.0)
|
|
{
|
|
setup(m);
|
|
}
|
|
|
|
template <typename T>
|
|
void agg_renderer<T>::setup(Map const &m)
|
|
{
|
|
boost::optional<color> const& bg = m.background();
|
|
if (bg)
|
|
{
|
|
if (bg->alpha() < 255)
|
|
{
|
|
mapnik::color bg_color = *bg;
|
|
bg_color.premultiply();
|
|
pixmap_.set_background(bg_color);
|
|
}
|
|
else
|
|
{
|
|
pixmap_.set_background(*bg);
|
|
}
|
|
}
|
|
|
|
boost::optional<std::string> const& image_filename = m.background_image();
|
|
if (image_filename)
|
|
{
|
|
// NOTE: marker_cache returns premultiplied image, if needed
|
|
boost::optional<mapnik::marker_ptr> bg_marker = mapnik::marker_cache::instance().find(*image_filename,true);
|
|
if (bg_marker && (*bg_marker)->is_bitmap())
|
|
{
|
|
mapnik::image_ptr bg_image = *(*bg_marker)->get_bitmap_data();
|
|
int w = bg_image->width();
|
|
int h = bg_image->height();
|
|
if ( w > 0 && h > 0)
|
|
{
|
|
// repeat background-image both vertically and horizontally
|
|
unsigned x_steps = static_cast<unsigned>(std::ceil(width_/double(w)));
|
|
unsigned y_steps = static_cast<unsigned>(std::ceil(height_/double(h)));
|
|
for (unsigned x=0;x<x_steps;++x)
|
|
{
|
|
for (unsigned y=0;y<y_steps;++y)
|
|
{
|
|
composite(pixmap_.data(),*bg_image, m.background_image_comp_op(), m.background_image_opacity(), x*w, y*h, false);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
MAPNIK_LOG_DEBUG(agg_renderer) << "agg_renderer: Scale=" << m.scale();
|
|
}
|
|
|
|
template <typename T>
|
|
agg_renderer<T>::~agg_renderer() {}
|
|
|
|
template <typename T>
|
|
void agg_renderer<T>::start_map_processing(Map const& map)
|
|
{
|
|
MAPNIK_LOG_DEBUG(agg_renderer) << "agg_renderer: Start map processing bbox=" << map.get_current_extent();
|
|
ras_ptr->clip_box(0,0,width_,height_);
|
|
}
|
|
|
|
template <typename T>
|
|
void agg_renderer<T>::end_map_processing(Map const& )
|
|
{
|
|
|
|
agg::rendering_buffer buf(pixmap_.raw_data(),width_,height_, width_ * 4);
|
|
agg::pixfmt_rgba32_pre pixf(buf);
|
|
pixf.demultiply();
|
|
MAPNIK_LOG_DEBUG(agg_renderer) << "agg_renderer: End map processing";
|
|
}
|
|
|
|
template <typename T>
|
|
void agg_renderer<T>::start_layer_processing(layer const& lay, box2d<double> const& query_extent)
|
|
{
|
|
MAPNIK_LOG_DEBUG(agg_renderer) << "agg_renderer: Start processing layer=" << lay.name();
|
|
MAPNIK_LOG_DEBUG(agg_renderer) << "agg_renderer: -- datasource=" << lay.datasource().get();
|
|
MAPNIK_LOG_DEBUG(agg_renderer) << "agg_renderer: -- query_extent=" << query_extent;
|
|
|
|
if (lay.clear_label_cache())
|
|
{
|
|
detector_->clear();
|
|
}
|
|
|
|
query_extent_ = query_extent;
|
|
boost::optional<box2d<double> > const& maximum_extent = lay.maximum_extent();
|
|
if (maximum_extent)
|
|
{
|
|
query_extent_.clip(*maximum_extent);
|
|
}
|
|
}
|
|
|
|
template <typename T>
|
|
void agg_renderer<T>::end_layer_processing(layer const&)
|
|
{
|
|
MAPNIK_LOG_DEBUG(agg_renderer) << "agg_renderer: End layer processing";
|
|
}
|
|
|
|
template <typename T>
|
|
void agg_renderer<T>::start_style_processing(feature_type_style const& st)
|
|
{
|
|
MAPNIK_LOG_DEBUG(agg_renderer) << "agg_renderer: Start processing style";
|
|
if (st.comp_op() || st.image_filters().size() > 0 || st.get_opacity() < 1)
|
|
{
|
|
style_level_compositing_ = true;
|
|
}
|
|
else
|
|
{
|
|
style_level_compositing_ = false;
|
|
}
|
|
|
|
if (style_level_compositing_)
|
|
{
|
|
if (!internal_buffer_)
|
|
{
|
|
internal_buffer_ = boost::make_shared<buffer_type>(pixmap_.width(),pixmap_.height());
|
|
}
|
|
else
|
|
{
|
|
internal_buffer_->set_background(color(0,0,0,0)); // fill with transparent colour
|
|
}
|
|
current_buffer_ = internal_buffer_.get();
|
|
}
|
|
else
|
|
{
|
|
current_buffer_ = &pixmap_;
|
|
}
|
|
}
|
|
|
|
template <typename T>
|
|
void agg_renderer<T>::end_style_processing(feature_type_style const& st)
|
|
{
|
|
if (style_level_compositing_)
|
|
{
|
|
bool blend_from = false;
|
|
if (st.image_filters().size() > 0)
|
|
{
|
|
blend_from = true;
|
|
mapnik::filter::filter_visitor<image_32> visitor(*current_buffer_);
|
|
BOOST_FOREACH(mapnik::filter::filter_type const& filter_tag, st.image_filters())
|
|
{
|
|
boost::apply_visitor(visitor, filter_tag);
|
|
}
|
|
}
|
|
|
|
if (st.comp_op())
|
|
{
|
|
composite(pixmap_.data(),current_buffer_->data(), *st.comp_op(), st.get_opacity(), 0, 0, false);
|
|
}
|
|
else if (blend_from || st.get_opacity() < 1)
|
|
{
|
|
composite(pixmap_.data(),current_buffer_->data(), src_over, st.get_opacity(), 0, 0, false);
|
|
}
|
|
}
|
|
// apply any 'direct' image filters
|
|
mapnik::filter::filter_visitor<image_32> visitor(pixmap_);
|
|
BOOST_FOREACH(mapnik::filter::filter_type const& filter_tag, st.direct_image_filters())
|
|
{
|
|
boost::apply_visitor(visitor, filter_tag);
|
|
}
|
|
MAPNIK_LOG_DEBUG(agg_renderer) << "agg_renderer: End processing style";
|
|
}
|
|
|
|
template <typename T>
|
|
void agg_renderer<T>::render_marker(pixel_position const& pos,
|
|
marker const& marker,
|
|
agg::trans_affine const& tr,
|
|
double opacity,
|
|
composite_mode_e comp_op)
|
|
{
|
|
typedef agg::rgba8 color_type;
|
|
typedef agg::order_rgba order_type;
|
|
typedef agg::comp_op_adaptor_rgba<color_type, order_type> blender_type; // comp blender
|
|
typedef agg::pixfmt_custom_blend_rgba<blender_type, agg::rendering_buffer> pixfmt_comp_type;
|
|
typedef agg::renderer_base<pixfmt_comp_type> renderer_base;
|
|
typedef agg::renderer_scanline_aa_solid<renderer_base> renderer_type;
|
|
typedef agg::pod_bvector<mapnik::svg::path_attributes> svg_attribute_type;
|
|
|
|
ras_ptr->reset();
|
|
if (gamma_method_ != GAMMA_POWER || gamma_ != 1.0)
|
|
{
|
|
ras_ptr->gamma(agg::gamma_power());
|
|
gamma_method_ = GAMMA_POWER;
|
|
gamma_ = 1.0;
|
|
}
|
|
agg::scanline_u8 sl;
|
|
agg::rendering_buffer buf(current_buffer_->raw_data(), width_, height_, width_ * 4);
|
|
pixfmt_comp_type pixf(buf);
|
|
pixf.comp_op(static_cast<agg::comp_op_e>(comp_op));
|
|
renderer_base renb(pixf);
|
|
|
|
if (marker.is_vector())
|
|
{
|
|
box2d<double> const& bbox = (*marker.get_vector_data())->bounding_box();
|
|
coord<double,2> c = bbox.center();
|
|
// center the svg marker on '0,0'
|
|
agg::trans_affine mtx = agg::trans_affine_translation(-c.x,-c.y);
|
|
// apply symbol transformation to get to map space
|
|
mtx *= tr;
|
|
mtx *= agg::trans_affine_scaling(scale_factor_);
|
|
// render the marker at the center of the marker box
|
|
mtx.translate(pos.x, pos.y);
|
|
using namespace mapnik::svg;
|
|
vertex_stl_adapter<svg_path_storage> stl_storage((*marker.get_vector_data())->source());
|
|
svg_path_adapter svg_path(stl_storage);
|
|
svg_renderer_agg<svg_path_adapter,
|
|
svg_attribute_type,
|
|
renderer_type,
|
|
pixfmt_comp_type> svg_renderer(svg_path,
|
|
(*marker.get_vector_data())->attributes());
|
|
|
|
svg_renderer.render(*ras_ptr, sl, renb, mtx, opacity, bbox);
|
|
}
|
|
else
|
|
{
|
|
double width = (*marker.get_bitmap_data())->width();
|
|
double height = (*marker.get_bitmap_data())->height();
|
|
if (std::fabs(1.0 - scale_factor_) < 0.001 && tr.is_identity())
|
|
{
|
|
double cx = 0.5 * width;
|
|
double cy = 0.5 * height;
|
|
composite(current_buffer_->data(), **marker.get_bitmap_data(),
|
|
comp_op, opacity,
|
|
boost::math::iround(pos.x - cx),
|
|
boost::math::iround(pos.y - cy),
|
|
false);
|
|
}
|
|
else
|
|
{
|
|
|
|
double p[8];
|
|
double x0 = pos.x - 0.5 * width;
|
|
double y0 = pos.y - 0.5 * height;
|
|
p[0] = x0; p[1] = y0;
|
|
p[2] = x0 + width; p[3] = y0;
|
|
p[4] = x0 + width; p[5] = y0 + height;
|
|
p[6] = x0; p[7] = y0 + height;
|
|
|
|
agg::trans_affine marker_tr;
|
|
|
|
marker_tr *= agg::trans_affine_translation(-pos.x,-pos.y);
|
|
marker_tr *= tr;
|
|
marker_tr *= agg::trans_affine_scaling(scale_factor_);
|
|
marker_tr *= agg::trans_affine_translation(pos.x,pos.y);
|
|
|
|
marker_tr.transform(&p[0], &p[1]);
|
|
marker_tr.transform(&p[2], &p[3]);
|
|
marker_tr.transform(&p[4], &p[5]);
|
|
marker_tr.transform(&p[6], &p[7]);
|
|
|
|
ras_ptr->move_to_d(p[0],p[1]);
|
|
ras_ptr->line_to_d(p[2],p[3]);
|
|
ras_ptr->line_to_d(p[4],p[5]);
|
|
ras_ptr->line_to_d(p[6],p[7]);
|
|
|
|
|
|
agg::span_allocator<color_type> sa;
|
|
agg::image_filter_bilinear filter_kernel;
|
|
agg::image_filter_lut filter(filter_kernel, false);
|
|
|
|
image_data_32 const& src = **marker.get_bitmap_data();
|
|
agg::rendering_buffer marker_buf((unsigned char *)src.getBytes(),
|
|
src.width(),
|
|
src.height(),
|
|
src.width()*4);
|
|
agg::pixfmt_rgba32_pre marker_pixf(marker_buf);
|
|
typedef agg::image_accessor_clone<agg::pixfmt_rgba32_pre> img_accessor_type;
|
|
typedef agg::span_interpolator_linear<agg::trans_affine> interpolator_type;
|
|
typedef agg::span_image_filter_rgba_2x2<img_accessor_type,
|
|
interpolator_type> span_gen_type;
|
|
typedef agg::renderer_scanline_aa_alpha<renderer_base,
|
|
agg::span_allocator<agg::rgba8>,
|
|
span_gen_type> renderer_type;
|
|
img_accessor_type ia(marker_pixf);
|
|
interpolator_type interpolator(agg::trans_affine(p, 0, 0, width, height) );
|
|
span_gen_type sg(ia, interpolator, filter);
|
|
renderer_type rp(renb,sa, sg, unsigned(opacity*255));
|
|
agg::render_scanlines(*ras_ptr, sl, rp);
|
|
}
|
|
}
|
|
}
|
|
|
|
template <typename T>
|
|
void agg_renderer<T>::painted(bool painted)
|
|
{
|
|
pixmap_.painted(painted);
|
|
}
|
|
|
|
template <typename T>
|
|
void agg_renderer<T>::debug_draw_box(box2d<double> const& box,
|
|
double x, double y, double angle)
|
|
{
|
|
agg::rendering_buffer buf(pixmap_.raw_data(), width_, height_, width_ * 4);
|
|
debug_draw_box(buf, box, x, y, angle);
|
|
}
|
|
|
|
template <typename T> template <typename R>
|
|
void agg_renderer<T>::debug_draw_box(R& buf, box2d<double> const& box,
|
|
double x, double y, double angle)
|
|
{
|
|
typedef agg::pixfmt_rgba32_pre pixfmt;
|
|
typedef agg::renderer_base<pixfmt> renderer_base;
|
|
typedef agg::renderer_scanline_aa_solid<renderer_base> renderer_type;
|
|
|
|
agg::scanline_p8 sl_line;
|
|
pixfmt pixf(buf);
|
|
renderer_base renb(pixf);
|
|
renderer_type ren(renb);
|
|
|
|
// compute tranformation matrix
|
|
agg::trans_affine tr = agg::trans_affine_rotation(angle).translate(x, y);
|
|
// prepare path
|
|
agg::path_storage pbox;
|
|
pbox.start_new_path();
|
|
pbox.move_to(box.minx(), box.miny());
|
|
pbox.line_to(box.maxx(), box.miny());
|
|
pbox.line_to(box.maxx(), box.maxy());
|
|
pbox.line_to(box.minx(), box.maxy());
|
|
pbox.line_to(box.minx(), box.miny());
|
|
|
|
// prepare stroke with applied transformation
|
|
typedef agg::conv_transform<agg::path_storage> conv_transform;
|
|
typedef agg::conv_stroke<conv_transform> conv_stroke;
|
|
conv_transform tbox(pbox, tr);
|
|
conv_stroke sbox(tbox);
|
|
sbox.generator().width(1.0 * scale_factor_);
|
|
|
|
// render the outline
|
|
ras_ptr->reset();
|
|
ras_ptr->add_path(sbox);
|
|
ren.color(agg::rgba8(0x33, 0x33, 0xff, 0xcc)); // blue is fine
|
|
agg::render_scanlines(*ras_ptr, sl_line, ren);
|
|
}
|
|
|
|
template <typename T>
|
|
void agg_renderer<T>::draw_geo_extent(box2d<double> const& extent, mapnik::color const& color)
|
|
{
|
|
box2d<double> box = t_.forward(extent);
|
|
double x0 = box.minx();
|
|
double x1 = box.maxx();
|
|
double y0 = box.miny();
|
|
double y1 = box.maxy();
|
|
unsigned rgba = color.rgba();
|
|
for (double x=x0; x<x1; x++)
|
|
{
|
|
pixmap_.setPixel(x, y0, rgba);
|
|
pixmap_.setPixel(x, y1, rgba);
|
|
}
|
|
for (double y=y0; y<y1; y++)
|
|
{
|
|
pixmap_.setPixel(x0, y, rgba);
|
|
pixmap_.setPixel(x1, y, rgba);
|
|
}
|
|
}
|
|
|
|
template class agg_renderer<image_32>;
|
|
template void agg_renderer<image_32>::debug_draw_box<agg::rendering_buffer>(
|
|
agg::rendering_buffer& buf,
|
|
box2d<double> const& box,
|
|
double x, double y, double angle);
|
|
}
|