/
process_line_pattern_symbolizer.cpp
176 lines (152 loc) · 6.6 KB
/
process_line_pattern_symbolizer.cpp
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
/*****************************************************************************
*
* 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/feature.hpp>
#include <mapnik/debug.hpp>
#include <mapnik/graphics.hpp>
#include <mapnik/agg_renderer.hpp>
#include <mapnik/agg_rasterizer.hpp>
#include <mapnik/agg_pattern_source.hpp>
#include <mapnik/marker.hpp>
#include <mapnik/marker_cache.hpp>
#include <mapnik/symbolizer.hpp>
#include <mapnik/vertex_converters.hpp>
#include <mapnik/noncopyable.hpp>
#include <mapnik/parse_path.hpp>
// agg
#include "agg_basics.h"
#include "agg_pixfmt_rgba.h"
#include "agg_color_rgba.h"
#include "agg_rendering_buffer.h"
#include "agg_rasterizer_outline.h"
#include "agg_rasterizer_outline_aa.h"
#include "agg_scanline_u.h"
#include "agg_renderer_scanline.h"
#include "agg_pattern_filters_rgba.h"
#include "agg_span_allocator.h"
#include "agg_span_pattern_rgba.h"
#include "agg_renderer_outline_image.h"
#include "agg_conv_clip_polyline.h"
// boost
namespace {
class pattern_source : private mapnik::noncopyable
{
public:
pattern_source(mapnik::image_data_32 const& pattern)
: pattern_(pattern) {}
inline unsigned int width() const
{
return pattern_.width();
}
inline unsigned int height() const
{
return pattern_.height();
}
inline agg::rgba8 pixel(int x, int y) const
{
unsigned c = pattern_(x,y);
return agg::rgba8_pre(c & 0xff,
(c >> 8) & 0xff,
(c >> 16) & 0xff,
(c >> 24) & 0xff);
}
private:
mapnik::image_data_32 const& pattern_;
};
}
namespace mapnik {
template <typename T0, typename T1>
void agg_renderer<T0,T1>::process(line_pattern_symbolizer const& sym,
mapnik::feature_impl & feature,
proj_transform const& prj_trans)
{
typedef agg::rgba8 color;
typedef agg::order_rgba order;
typedef agg::comp_op_adaptor_rgba_pre<color, order> blender_type;
typedef agg::pattern_filter_bilinear_rgba8 pattern_filter_type;
typedef agg::line_image_pattern<pattern_filter_type> pattern_type;
typedef agg::pixfmt_custom_blend_rgba<blender_type, agg::rendering_buffer> pixfmt_type;
typedef agg::renderer_base<pixfmt_type> renderer_base;
typedef agg::renderer_outline_image<renderer_base, pattern_type> renderer_type;
typedef agg::rasterizer_outline_aa<renderer_type> rasterizer_type;
std::string filename = get<std::string>(sym, keys::file, feature, common_.vars_);
if (filename.empty()) return;
boost::optional<mapnik::marker_ptr> mark = marker_cache::instance().find(filename, true);
if (!mark) return;
if (!(*mark)->is_bitmap())
{
MAPNIK_LOG_DEBUG(agg_renderer) << "agg_renderer: Only images (not '" << filename << "') are supported in the line_pattern_symbolizer";
return;
}
boost::optional<image_ptr> pat = (*mark)->get_bitmap_data();
if (!pat) return;
bool clip = get<value_bool>(sym, keys::clip, feature, common_.vars_, true);
//double opacity = get<value_double>(sym,keys::stroke_opacity,feature, 1.0); TODO
double offset = get<value_double>(sym, keys::offset, feature, common_.vars_, 0.0);
double simplify_tolerance = get<value_double>(sym, keys::simplify_tolerance, feature, common_.vars_, 0.0);
double smooth = get<value_double>(sym, keys::smooth, feature, common_.vars_, false);
agg::rendering_buffer buf(current_buffer_->raw_data(),current_buffer_->width(),current_buffer_->height(), current_buffer_->width() * 4);
pixfmt_type pixf(buf);
pixf.comp_op(get<agg::comp_op_e>(sym, keys::comp_op, feature, common_.vars_, agg::comp_op_src_over));
renderer_base ren_base(pixf);
agg::pattern_filter_bilinear_rgba8 filter;
pattern_source source(*(*pat));
pattern_type pattern (filter,source);
renderer_type ren(ren_base, pattern);
rasterizer_type ras(ren);
agg::trans_affine tr;
auto transform = get_optional<transform_type>(sym, keys::geometry_transform);
if (transform) evaluate_transform(tr, feature, common_.vars_, *transform, common_.scale_factor_);
box2d<double> clip_box = clipping_extent();
if (clip)
{
double padding = (double)(common_.query_extent_.width()/pixmap_.width());
double half_stroke = (*mark)->width()/2.0;
if (half_stroke > 1)
padding *= half_stroke;
if (std::fabs(offset) > 0)
padding *= std::fabs(offset) * 1.2;
padding *= common_.scale_factor_;
clip_box.pad(padding);
}
typedef boost::mpl::vector<clip_line_tag,transform_tag,offset_transform_tag,affine_transform_tag,simplify_tag,smooth_tag> conv_types;
vertex_converter<box2d<double>, rasterizer_type, line_pattern_symbolizer,
CoordTransform, proj_transform, agg::trans_affine, conv_types, feature_impl>
converter(clip_box,ras,sym,common_.t_,prj_trans,tr,feature,common_.vars_,common_.scale_factor_);
if (clip) converter.set<clip_line_tag>(); //optional clip (default: true)
converter.set<transform_tag>(); //always transform
if (simplify_tolerance > 0.0) converter.set<simplify_tag>(); // optional simplify converter
if (std::fabs(offset) > 0.0) converter.set<offset_transform_tag>(); // parallel offset
converter.set<affine_transform_tag>(); // optional affine transform
if (smooth > 0.0) converter.set<smooth_tag>(); // optional smooth converter
for (geometry_type & geom : feature.paths())
{
if (geom.size() > 1)
{
converter.apply(geom);
}
}
}
template void agg_renderer<image_32>::process(line_pattern_symbolizer const&,
mapnik::feature_impl &,
proj_transform const&);
}