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fix outline drawing in debugsymbolizer ring mode

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This commit is contained in:
Dane Springmeyer 2015-04-14 15:33:05 +02:00
parent cdb9a2ead4
commit 3fb41e865a
1 changed files with 20 additions and 14 deletions
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34
src/agg/process_debug_symbolizer.cpp
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@ -103,8 +103,13 @@ struct apply_vertex_mode
template <typename BufferType> template <typename BufferType>
struct RingRenderer { struct RingRenderer {
using ren_base = agg::renderer_base<agg::pixfmt_rgba32_pre>; using color_type = agg::rgba8;
using renderer = agg::renderer_scanline_aa_solid<ren_base>; using order_type = agg::order_rgba;
using blender_type = agg::comp_op_adaptor_rgba_pre<color_type, order_type>; // comp blender
using pixfmt_comp_type = agg::pixfmt_custom_blend_rgba<blender_type, agg::rendering_buffer>;
using renderer_base = agg::renderer_base<pixfmt_comp_type>;
using renderer_type = agg::renderer_scanline_aa_solid<renderer_base>;
using path_type = transform_path_adapter<view_transform, geometry::ring_vertex_adapter>; using path_type = transform_path_adapter<view_transform, geometry::ring_vertex_adapter>;
RingRenderer(rasterizer & ras_ptr, RingRenderer(rasterizer & ras_ptr,
@ -122,25 +127,26 @@ struct RingRenderer {
{ {
ras_ptr_.reset(); ras_ptr_.reset();
agg::rendering_buffer buf(im_.getBytes(),im_.width(),im_.height(),im_.getRowSize()); agg::rendering_buffer buf(im_.getBytes(),im_.width(),im_.height(),im_.getRowSize());
agg::pixfmt_rgba32_pre pixf(buf); pixfmt_comp_type pixf(buf);
ren_base renb(pixf); renderer_base renb(pixf);
renderer ren(renb); renderer_type ren(renb);
geometry::ring_vertex_adapter va(ring); geometry::ring_vertex_adapter va(ring);
path_type path(tr_,va,prj_trans_); path_type path(tr_,va,prj_trans_);
ras_ptr_.add_path(path); ras_ptr_.add_path(path);
ras_ptr_.filling_rule(agg::fill_non_zero);
ren.color(color); ren.color(color);
agg::render_scanlines(ras_ptr_, sl_, ren); agg::render_scanlines(ras_ptr_, sl_, ren);
} }
void draw_outline(geometry::linear_ring const& ring, void draw_outline(geometry::linear_ring const& ring,
agg::rgba8 const& color, agg::rgba8 const& color,
double stroke_width) double stroke_width=3)
{ {
ras_ptr_.reset(); ras_ptr_.reset();
agg::rendering_buffer buf(im_.getBytes(),im_.width(),im_.height(),im_.getRowSize()); agg::rendering_buffer buf(im_.getBytes(),im_.width(),im_.height(),im_.getRowSize());
agg::pixfmt_rgba32_pre pixf(buf); pixfmt_comp_type pixf(buf);
ren_base renb(pixf); renderer_base renb(pixf);
renderer ren(renb); renderer_type ren(renb);
geometry::ring_vertex_adapter va(ring); geometry::ring_vertex_adapter va(ring);
path_type path(tr_,va,prj_trans_); path_type path(tr_,va,prj_trans_);
agg::conv_stroke<path_type> stroke(path); agg::conv_stroke<path_type> stroke(path);
@ -174,20 +180,20 @@ struct render_ring_visitor {
void operator()(mapnik::geometry::polygon const& geom) void operator()(mapnik::geometry::polygon const& geom)
{ {
agg::rgba8 red(255, 0, 0, 255); agg::rgba8 red(255,0,0,255);
agg::rgba8 green(0, 255, 255, 255); agg::rgba8 green(0,255,255,255);
agg::rgba black(0,0,0,255); agg::rgba8 black(0,0,0,255);
renderer_.draw_ring(geom.exterior_ring,red); renderer_.draw_ring(geom.exterior_ring,red);
if (mapnik::util::is_clockwise(geom.exterior_ring)) if (mapnik::util::is_clockwise(geom.exterior_ring))
{ {
renderer_.draw_outline(geom.exterior_ring,black,2); renderer_.draw_outline(geom.exterior_ring,black);
} }
for (auto const& ring : geom.interior_rings) for (auto const& ring : geom.interior_rings)
{ {
renderer_.draw_ring(ring,green); renderer_.draw_ring(ring,green);
if (!mapnik::util::is_clockwise(ring)) if (!mapnik::util::is_clockwise(ring))
{ {
renderer_.draw_outline(ring,black,2); renderer_.draw_outline(ring,black);
} }
} }
} }