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Merge pull request #2955 from mapnik/offset_converter-fix

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Offset converter fix
This commit is contained in:
Dane Springmeyer 2015-07-07 11:56:12 -07:00
commit 714b88d244
4 changed files with 73 additions and 27 deletions
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53
include/mapnik/offset_converter.hpp
View file

@ -53,7 +53,7 @@ struct offset_converter
, pre_first_(vertex2d::no_init)
, pre_(vertex2d::no_init)
, cur_(vertex2d::no_init)
{}
{}
enum status
{
@ -299,36 +299,51 @@ private:
vertex2d v1(vertex2d::no_init);
vertex2d v2(vertex2d::no_init);
vertex2d w(vertex2d::no_init);
vertex2d start(vertex2d::no_init);
vertex2d start_v2(vertex2d::no_init);
std::vector<vertex2d> points;
std::vector<vertex2d> close_points;
bool is_polygon = false;
std::size_t cpt = 0;
v0.cmd = geom_.vertex(&v0.x, &v0.y);
v1.x = v0.x;
v1.y = v0.y;
v1.cmd = v0.cmd;
v1 = v0;
// PUSH INITIAL
points.push_back(vertex2d(v0.x, v0.y, v0.cmd));
points.push_back(v0);
if (v0.cmd == SEG_END) // not enough vertices in source
{
return status_ = process;
}
start = v0;
while ((v0.cmd = geom_.vertex(&v0.x, &v0.y)) != SEG_END)
{
points.push_back(vertex2d(v0.x, v0.y, v0.cmd));
if (v0.cmd == SEG_CLOSE)
{
is_polygon = true;
close_points.push_back(vertex2d(v1.x, v1.y, v1.cmd));
auto & prev = points.back();
if (prev.x == start.x && prev.y == start.y)
{
prev.x = v0.x; // hack
prev.y = v0.y;
prev.cmd = SEG_CLOSE; // account for dupes (line_to(move_to) + close_path) in agg poly clipper
std::size_t size = points.size();
if (size > 1) close_points.push_back(points[size - 2]);
else close_points.push_back(prev);
continue;
}
else
{
close_points.push_back(v1);
}
}
v1.x = v0.x;
v1.y = v0.y;
v1.cmd = v0.cmd;
else if (v0.cmd == SEG_MOVETO)
{
start = v0;
}
v1 = v0;
points.push_back(v0);
}
// Push SEG_END
points.push_back(vertex2d(v0.x, v0.y, v0.cmd));
points.push_back(vertex2d(v0.x,v0.y,SEG_END));
std::size_t i = 0;
v1 = points[i++];
v2 = points[i++];
@ -375,11 +390,11 @@ private:
{
dot = v_x1x0 * v_x1x2 + v_y1y0 * v_y1y2; // dot product
det = v_x1x0 * v_y1y2 - v_y1y0 * v_x1x2; // determinant
joint_angle = std::atan2(det, dot); // atan2(y, x) or atan2(sin, cos)
if (joint_angle < 0) joint_angle = joint_angle + 2 * M_PI;
joint_angle = std::fmod(joint_angle, 2 * M_PI);
if (offset_ > 0.0)
{
joint_angle = 2 * M_PI - joint_angle;
@ -390,7 +405,7 @@ private:
if (std::abs(joint_angle) > M_PI)
{
curve_angle = explement_reflex_angle(angle_b - angle_a);
// Bulge steps should be determined by the inverse of the joint angle.
// Bulge steps should be determined by the inverse of the joint angle.
double half_turns = half_turn_segments_ * std::fabs(curve_angle);
bulge_steps = 1 + static_cast<int>(std::floor(half_turns / M_PI));
}
@ -470,7 +485,7 @@ private:
v_y1y0 = -v_y1y2;
// Calculate new angle_a
angle_a = std::atan2(v_y1y2, v_x1x2);
// Calculate the new vector
v_x1x2 = v2.x - v1.x;
v_y1y2 = v2.y - v1.y;
@ -479,11 +494,11 @@ private:
dot = v_x1x0 * v_x1x2 + v_y1y0 * v_y1y2; // dot product
det = v_x1x0 * v_y1y2 - v_y1y0 * v_x1x2; // determinant
joint_angle = std::atan2(det, dot); // atan2(y, x) or atan2(sin, cos)
if (joint_angle < 0) joint_angle = joint_angle + 2 * M_PI;
joint_angle = std::fmod(joint_angle, 2 * M_PI);
if (offset_ > 0.0)
{
joint_angle = 2 * M_PI - joint_angle;
@ -494,7 +509,7 @@ private:
if (std::abs(joint_angle) > M_PI)
{
curve_angle = explement_reflex_angle(angle_b - angle_a);
// Bulge steps should be determined by the inverse of the joint angle.
// Bulge steps should be determined by the inverse of the joint angle.
double half_turns = half_turn_segments_ * std::fabs(curve_angle);
bulge_steps = 1 + static_cast<int>(std::floor(half_turns / M_PI));
}

24
src/agg/process_line_symbolizer.cpp
View file

@ -31,6 +31,7 @@
#include <mapnik/vertex_processor.hpp>
#include <mapnik/renderer_common/clipping_extent.hpp>
#include <mapnik/renderer_common/apply_vertex_converter.hpp>
#include <mapnik/geometry_type.hpp>
// agg
#include "agg_basics.h"
#include "agg_rendering_buffer.h"
@ -164,12 +165,19 @@ void agg_renderer<T0,T1>::process(line_symbolizer const& sym,
rasterizer_type ras(ren);
set_join_caps_aa(sym, ras, feature, common_.vars_);
using vertex_converter_type = vertex_converter<clip_line_tag, transform_tag,
using vertex_converter_type = vertex_converter<clip_line_tag, clip_poly_tag, transform_tag,
affine_transform_tag,
simplify_tag, smooth_tag,
offset_transform_tag>;
vertex_converter_type converter(clip_box,sym,common_.t_,prj_trans,tr,feature,common_.vars_,common_.scale_factor_);
if (clip) converter.set<clip_line_tag>(); // optional clip (default: true)
if (clip)
{
geometry::geometry_types type = geometry::geometry_type(feature.get_geometry());
if (type == geometry::geometry_types::Polygon || type == geometry::geometry_types::MultiPolygon)
converter.template set<clip_poly_tag>();
else if (type == geometry::geometry_types::LineString || type == geometry::geometry_types::MultiLineString)
converter.template set<clip_line_tag>();
}
converter.set<transform_tag>(); // always transform
if (std::fabs(offset) > 0.0) converter.set<offset_transform_tag>(); // parallel offset
converter.set<affine_transform_tag>(); // optional affine transform
@ -183,14 +191,20 @@ void agg_renderer<T0,T1>::process(line_symbolizer const& sym,
}
else
{
using vertex_converter_type = vertex_converter<clip_line_tag, transform_tag,
using vertex_converter_type = vertex_converter<clip_line_tag, clip_poly_tag, transform_tag,
affine_transform_tag,
simplify_tag, smooth_tag,
offset_transform_tag,
dash_tag, stroke_tag>;
vertex_converter_type converter(clip_box, sym,common_.t_,prj_trans,tr,feature,common_.vars_,common_.scale_factor_);
if (clip) converter.set<clip_line_tag>(); // optional clip (default: true)
if (clip)
{
geometry::geometry_types type = geometry::geometry_type(feature.get_geometry());
if (type == geometry::geometry_types::Polygon || type == geometry::geometry_types::MultiPolygon)
converter.template set<clip_poly_tag>();
else if (type == geometry::geometry_types::LineString || type == geometry::geometry_types::MultiLineString)
converter.template set<clip_line_tag>();
}
converter.set<transform_tag>(); // always transform
if (std::fabs(offset) > 0.0) converter.set<offset_transform_tag>(); // parallel offset
converter.set<affine_transform_tag>(); // optional affine transform

11
src/cairo/process_line_symbolizer.cpp
View file

@ -29,6 +29,7 @@
#include <mapnik/vertex_converters.hpp>
#include <mapnik/vertex_processor.hpp>
#include <mapnik/renderer_common/apply_vertex_converter.hpp>
#include <mapnik/geometry_type.hpp>
namespace mapnik
{
@ -82,6 +83,7 @@ void cairo_renderer<T>::process(line_symbolizer const& sym,
clipping_extent.pad(padding);
}
using vertex_converter_type = vertex_converter<clip_line_tag,
clip_poly_tag,
transform_tag,
affine_transform_tag,
simplify_tag, smooth_tag,
@ -89,7 +91,14 @@ void cairo_renderer<T>::process(line_symbolizer const& sym,
vertex_converter_type converter(clipping_extent,sym,common_.t_,prj_trans,tr,feature,common_.vars_,common_.scale_factor_);
if (clip) converter.set<clip_line_tag>(); // optional clip (default: true)
if (clip)
{
geometry::geometry_types type = geometry::geometry_type(feature.get_geometry());
if (type == geometry::geometry_types::Polygon || type == geometry::geometry_types::MultiPolygon)
converter.template set<clip_poly_tag>();
else if (type == geometry::geometry_types::LineString || type == geometry::geometry_types::MultiLineString)
converter.template set<clip_line_tag>();
}
converter.set<transform_tag>(); // always transform
if (std::fabs(offset) > 0.0) converter.set<offset_transform_tag>(); // parallel offset
converter.set<affine_transform_tag>(); // optional affine transform

12
src/grid/process_line_symbolizer.cpp
View file

@ -31,6 +31,7 @@
#include <mapnik/vertex_converters.hpp>
#include <mapnik/vertex_processor.hpp>
#include <mapnik/renderer_common/apply_vertex_converter.hpp>
#include <mapnik/geometry_type.hpp>
// agg
#include "agg_rasterizer_scanline_aa.h"
#include "agg_renderer_scanline.h"
@ -89,14 +90,21 @@ void grid_renderer<T>::process(line_symbolizer const& sym,
padding *= common_.scale_factor_;
clipping_extent.pad(padding);
}
using vertex_converter_type = vertex_converter<clip_line_tag, transform_tag,
using vertex_converter_type = vertex_converter<clip_line_tag, clip_poly_tag, transform_tag,
affine_transform_tag,
simplify_tag, smooth_tag,
offset_transform_tag,
dash_tag, stroke_tag>;
vertex_converter_type converter(clipping_extent,sym,common_.t_,prj_trans,tr,feature,common_.vars_,common_.scale_factor_);
if (clip) converter.set<clip_line_tag>(); // optional clip (default: true)
if (clip)
{
geometry::geometry_types type = geometry::geometry_type(feature.get_geometry());
if (type == geometry::geometry_types::Polygon || type == geometry::geometry_types::MultiPolygon)
converter.template set<clip_poly_tag>();
else if (type == geometry::geometry_types::LineString || type == geometry::geometry_types::MultiLineString)
converter.template set<clip_line_tag>();
}
converter.set<transform_tag>(); // always transform
if (std::fabs(offset) > 0.0) converter.set<offset_transform_tag>(); // parallel offset
converter.set<affine_transform_tag>(); // optional affine transform