void draw_polyline(Rasterizer& ras,
Renderer& ren,
const double* polyline,
int num_points)
{
agg::poly_plain_adaptor<double> vs(polyline, num_points, m_line1.close());
agg::conv_transform<agg::poly_plain_adaptor<double> > trans(vs, m_scale);
ras.add_path(trans);
}
void draw_curve(Pattern& patt,
Rasterizer& ras,
Renderer& ren,
PatternSource& src,
VertexSource& vs)
{
patt.create(src);
ren.scale_x(m_scale_x.value());
ren.start_x(m_start_x.value());
ras.add_path(vs);
}
unsigned render_sbool(Rasterizer& ras1, Rasterizer& ras2)
{
pixfmt pf(rbuf_window());
agg::renderer_base<pixfmt> rb(pf);
agg::renderer_scanline_aa_solid<agg::renderer_base<pixfmt> > ren(rb);
agg::scanline_p8 sl;
ras1.filling_rule(m_fill_rule.cur_item() ? agg::fill_non_zero : agg::fill_even_odd);
ras2.filling_rule(m_fill_rule.cur_item() ? agg::fill_non_zero : agg::fill_even_odd);
switch(m_polygons.cur_item())
{
case 0:
{
//------------------------------------
// Two simple paths
//
agg::path_storage ps1;
agg::path_storage ps2;
double x = m_x - initial_width()/2 + 100;
double y = m_y - initial_height()/2 + 100;
ps1.move_to(x+140, y+145);
ps1.line_to(x+225, y+44);
ps1.line_to(x+296, y+219);
ps1.close_polygon();
ps1.line_to(x+226, y+289);
ps1.line_to(x+82, y+292);
ps1.move_to(x+220, y+222);
ps1.line_to(x+363, y+249);
ps1.line_to(x+265, y+331);
ps1.move_to(x+242, y+243);
ps1.line_to(x+325, y+261);
ps1.line_to(x+268, y+309);
ps1.move_to(x+259, y+259);
ps1.line_to(x+273, y+288);
ps1.line_to(x+298, y+266);
ps2.move_to(100+32, 100+77);
ps2.line_to(100+473, 100+263);
ps2.line_to(100+351, 100+290);
ps2.line_to(100+354, 100+374);
ras1.reset();
ras1.add_path(ps1);
ren.color(agg::rgba(0, 0, 0, 0.1));
agg::render_scanlines(ras1, sl, ren);
ras2.reset();
ras2.add_path(ps2);
ren.color(agg::rgba(0, 0.6, 0, 0.1));
agg::render_scanlines(ras2, sl, ren);
render_scanline_boolean(ras1, ras2);
}
break;
case 1:
{
//------------------------------------
// Closed stroke
//
agg::path_storage ps1;
agg::path_storage ps2;
agg::conv_stroke<agg::path_storage> stroke(ps2);
stroke.width(15.0);
double x = m_x - initial_width()/2 + 100;
double y = m_y - initial_height()/2 + 100;
ps1.move_to(x+140, y+145);
ps1.line_to(x+225, y+44);
ps1.line_to(x+296, y+219);
ps1.close_polygon();
ps1.line_to(x+226, y+289);
ps1.line_to(x+82, y+292);
ps1.move_to(x+220-50, y+222);
ps1.line_to(x+363-50, y+249);
ps1.line_to(x+265-50, y+331);
ps1.close_polygon();
ps2.move_to(100+32, 100+77);
ps2.line_to(100+473, 100+263);
ps2.line_to(100+351, 100+290);
ps2.line_to(100+354, 100+374);
ps2.close_polygon();
ras1.reset();
ras1.add_path(ps1);
ren.color(agg::rgba(0, 0, 0, 0.1));
agg::render_scanlines(ras1, sl, ren);
ras2.reset();
ras2.add_path(stroke);
ren.color(agg::rgba(0, 0.6, 0, 0.1));
agg::render_scanlines(ras2, sl, ren);
render_scanline_boolean(ras1, ras2);
}
break;
case 2:
{
//------------------------------------
// Great Britain and Arrows
//
agg::path_storage gb_poly;
agg::path_storage arrows;
make_gb_poly(gb_poly);
make_arrows(arrows);
agg::trans_affine mtx1;
agg::trans_affine mtx2;
mtx1 *= agg::trans_affine_translation(-1150, -1150);
mtx1 *= agg::trans_affine_scaling(2.0);
mtx2 = mtx1;
mtx2 *= agg::trans_affine_translation(m_x - initial_width()/2,
m_y - initial_height()/2);
agg::conv_transform<agg::path_storage> trans_gb_poly(gb_poly, mtx1);
agg::conv_transform<agg::path_storage> trans_arrows(arrows, mtx2);
ras2.add_path(trans_gb_poly);
ren.color(agg::rgba(0.5, 0.5, 0, 0.1));
agg::render_scanlines(ras2, sl, ren);
agg::conv_stroke<agg::conv_transform<agg::path_storage> > stroke_gb_poly(trans_gb_poly);
stroke_gb_poly.width(0.1);
ras1.add_path(stroke_gb_poly);
ren.color(agg::rgba(0, 0, 0));
agg::render_scanlines(ras1, sl, ren);
ras2.add_path(trans_arrows);
ren.color(agg::rgba(0.0, 0.5, 0.5, 0.1));
agg::render_scanlines(ras2, sl, ren);
ras1.reset();
ras1.add_path(trans_gb_poly);
render_scanline_boolean(ras1, ras2);
}
break;
case 3:
{
//------------------------------------
// Great Britain and a Spiral
//
spiral sp(m_x, m_y, 10, 150, 30, 0.0);
agg::conv_stroke<spiral> stroke(sp);
stroke.width(15.0);
agg::path_storage gb_poly;
make_gb_poly(gb_poly);
agg::trans_affine mtx;
mtx *= agg::trans_affine_translation(-1150, -1150);
mtx *= agg::trans_affine_scaling(2.0);
mtx *= trans_affine_resizing();
agg::conv_transform<agg::path_storage> trans_gb_poly(gb_poly, mtx);
ras1.add_path(trans_gb_poly);
ren.color(agg::rgba(0.5, 0.5, 0, 0.1));
agg::render_scanlines(ras1, sl, ren);
agg::conv_stroke<agg::conv_transform<agg::path_storage> > stroke_gb_poly(trans_gb_poly);
stroke_gb_poly.width(0.1);
ras1.reset();
ras1.add_path(stroke_gb_poly);
ren.color(agg::rgba(0, 0, 0));
agg::render_scanlines(ras1, sl, ren);
ras2.reset();
ras2.add_path(stroke);
ren.color(agg::rgba(0.0, 0.5, 0.5, 0.1));
agg::render_scanlines(ras2, sl, ren);
ras1.reset();
ras1.add_path(trans_gb_poly);
render_scanline_boolean(ras1, ras2);
}
break;
case 4:
{
//------------------------------------
// Spiral and glyph
//
spiral sp(m_x, m_y, 10, 150, 30, 0.0);
agg::conv_stroke<spiral> stroke(sp);
stroke.width(15.0);
agg::path_storage glyph;
glyph.move_to(28.47, 6.45);
glyph.curve3(21.58, 1.12, 19.82, 0.29);
glyph.curve3(17.19, -0.93, 14.21, -0.93);
glyph.curve3(9.57, -0.93, 6.57, 2.25);
glyph.curve3(3.56, 5.42, 3.56, 10.60);
glyph.curve3(3.56, 13.87, 5.03, 16.26);
glyph.curve3(7.03, 19.58, 11.99, 22.51);
glyph.curve3(16.94, 25.44, 28.47, 29.64);
glyph.line_to(28.47, 31.40);
glyph.curve3(28.47, 38.09, 26.34, 40.58);
glyph.curve3(24.22, 43.07, 20.17, 43.07);
glyph.curve3(17.09, 43.07, 15.28, 41.41);
glyph.curve3(13.43, 39.75, 13.43, 37.60);
glyph.line_to(13.53, 34.77);
glyph.curve3(13.53, 32.52, 12.38, 31.30);
glyph.curve3(11.23, 30.08, 9.38, 30.08);
glyph.curve3(7.57, 30.08, 6.42, 31.35);
glyph.curve3(5.27, 32.62, 5.27, 34.81);
glyph.curve3(5.27, 39.01, 9.57, 42.53);
glyph.curve3(13.87, 46.04, 21.63, 46.04);
glyph.curve3(27.59, 46.04, 31.40, 44.04);
glyph.curve3(34.28, 42.53, 35.64, 39.31);
glyph.curve3(36.52, 37.21, 36.52, 30.71);
glyph.line_to(36.52, 15.53);
glyph.curve3(36.52, 9.13, 36.77, 7.69);
glyph.curve3(37.01, 6.25, 37.57, 5.76);
glyph.curve3(38.13, 5.27, 38.87, 5.27);
glyph.curve3(39.65, 5.27, 40.23, 5.62);
glyph.curve3(41.26, 6.25, 44.19, 9.18);
glyph.line_to(44.19, 6.45);
glyph.curve3(38.72, -0.88, 33.74, -0.88);
glyph.curve3(31.35, -0.88, 29.93, 0.78);
glyph.curve3(28.52, 2.44, 28.47, 6.45);
glyph.close_polygon();
glyph.move_to(28.47, 9.62);
glyph.line_to(28.47, 26.66);
glyph.curve3(21.09, 23.73, 18.95, 22.51);
glyph.curve3(15.09, 20.36, 13.43, 18.02);
glyph.curve3(11.77, 15.67, 11.77, 12.89);
glyph.curve3(11.77, 9.38, 13.87, 7.06);
glyph.curve3(15.97, 4.74, 18.70, 4.74);
glyph.curve3(22.41, 4.74, 28.47, 9.62);
glyph.close_polygon();
agg::trans_affine mtx;
mtx *= agg::trans_affine_scaling(4.0);
mtx *= agg::trans_affine_translation(220, 200);
agg::conv_transform<agg::path_storage> trans(glyph, mtx);
agg::conv_curve<agg::conv_transform<agg::path_storage> > curve(trans);
ras1.reset();
ras1.add_path(stroke);
ren.color(agg::rgba(0, 0, 0, 0.1));
agg::render_scanlines(ras1, sl, ren);
ras2.reset();
ras2.add_path(curve);
ren.color(agg::rgba(0, 0.6, 0, 0.1));
agg::render_scanlines(ras2, sl, ren);
render_scanline_boolean(ras1, ras2);
}
break;
}
return 0;
}
void render_scanline_boolean(Rasterizer& ras1, Rasterizer& ras2)
{
if(m_operation.cur_item() > 0)
{
agg::sbool_op_e op;
switch(m_operation.cur_item())
{
case 1: op = agg::sbool_or; break;
case 2: op = agg::sbool_and; break;
case 3: op = agg::sbool_xor; break;
case 4: op = agg::sbool_xor_saddle;break;
case 5: op = agg::sbool_a_minus_b; break;
case 6: op = agg::sbool_b_minus_a; break;
}
typedef agg::renderer_base<pixfmt> renderer_base;
pixfmt pixf(rbuf_window());
renderer_base rb(pixf);
double t1 = 0.0;
double t2 = 0.0;
unsigned num_spans = 0;
switch(m_scanline_type.cur_item())
{
case 0:
{
typedef agg::renderer_scanline_aa_solid<renderer_base> renderer_solid;
typedef agg::scanline_p8 scanline_type;
renderer_solid ren(rb);
scanline_type sl;
scanline_type sl1;
scanline_type sl2;
// The intermediate storage is used only to test the perfoprmance,
// the short variant can be as follows:
// ------------------------
// ren.color(agg::rgba(0.5, 0.0, 0, 0.5));
// agg::sbool_combine_shapes_aa(op, ras1, ras2, sl1, sl2, sl, ren);
agg::scanline_storage_aa8 storage;
agg::scanline_storage_aa8 storage1;
agg::scanline_storage_aa8 storage2;
agg::render_scanlines(ras1, sl, storage1);
agg::render_scanlines(ras2, sl, storage2);
start_timer();
for(int i = 0; i < 10; i++)
{
agg::sbool_combine_shapes_aa(op, storage1, storage2, sl1, sl2, sl, storage);
}
t1 = elapsed_time() / 10.0;
start_timer();
ren.color(agg::rgba(0.5, 0.0, 0, 0.5));
agg::render_scanlines(storage, sl, ren);
t2 = elapsed_time();
num_spans = count_spans(storage, sl);
}
break;
case 1:
{
typedef agg::renderer_scanline_aa_solid<renderer_base> renderer_solid;
typedef agg::scanline_u8 scanline_type;
renderer_solid ren(rb);
scanline_type sl;
scanline_type sl1;
scanline_type sl2;
agg::scanline_storage_aa8 storage;
agg::scanline_storage_aa8 storage1;
agg::scanline_storage_aa8 storage2;
agg::render_scanlines(ras1, sl, storage1);
agg::render_scanlines(ras2, sl, storage2);
start_timer();
for(int i = 0; i < 10; i++)
{
agg::sbool_combine_shapes_aa(op, storage1, storage2, sl1, sl2, sl, storage);
}
t1 = elapsed_time() / 10.0;
start_timer();
ren.color(agg::rgba(0.5, 0.0, 0, 0.5));
agg::render_scanlines(storage, sl, ren);
t2 = elapsed_time();
num_spans = count_spans(storage, sl);
}
break;
case 2:
{
typedef agg::renderer_scanline_bin_solid<renderer_base> renderer_solid;
typedef agg::scanline_bin scanline_type;
renderer_solid ren(rb);
scanline_type sl;
scanline_type sl1;
scanline_type sl2;
agg::scanline_storage_bin storage;
agg::scanline_storage_bin storage1;
agg::scanline_storage_bin storage2;
agg::render_scanlines(ras1, sl, storage1);
agg::render_scanlines(ras2, sl, storage2);
start_timer();
for(int i = 0; i < 10; i++)
{
agg::sbool_combine_shapes_bin(op, storage1, storage2, sl1, sl2, sl, storage);
}
t1 = elapsed_time() / 10.0;
start_timer();
ren.color(agg::rgba(0.5, 0.0, 0, 0.5));
agg::render_scanlines(storage, sl, ren);
t2 = elapsed_time();
num_spans = count_spans(storage, sl);
}
break;
}
char buf[100];
sprintf(buf, "Combine=%.3fms\n\nRender=%.3fms\n\nnum_spans=%d", t1, t2, num_spans);
agg::renderer_scanline_aa_solid<renderer_base> ren(rb);
agg::scanline_p8 sl;
agg::gsv_text txt;
agg::conv_stroke<agg::gsv_text> txt_stroke(txt);
txt_stroke.width(1.0);
txt_stroke.line_cap(agg::round_cap);
txt.size(8.0);
txt.start_point(420, 40);
txt.text(buf);
ras1.add_path(txt_stroke);
ren.color(agg::rgba(0.0, 0.0, 0.0));
agg::render_scanlines(ras1, sl, ren);
}
}
void render_id(Rasterizer& ras,
Scanline& sl,
Renderer& ren,
int feature_id,
agg::trans_affine const& mtx,
double opacity,
const box2d<double> &symbol_bbox)
{
using namespace agg;
trans_affine transform;
curved_stroked_trans_type curved_stroked_trans(curved_stroked_,transform);
curved_trans_type curved_trans(curved_,transform);
curved_trans_contour_type curved_trans_contour(curved_trans);
curved_trans_contour.auto_detect_orientation(true);
for(unsigned i = 0; i < attributes_.size(); ++i)
{
mapnik::svg::path_attributes const& attr = attributes_[i];
if (!attr.visibility_flag)
continue;
transform = attr.transform;
double bx1,by1,bx2,by2;
bounding_rect_single(curved_trans, attr.index, &bx1, &by1, &bx2, &by2);
box2d<double> path_bbox(bx1,by1,bx2,by2);
transform *= mtx;
double scl = transform.scale();
//curved_.approximation_method(curve_inc);
curved_.approximation_scale(scl);
curved_.angle_tolerance(0.0);
mapnik::gray16 color(feature_id);
if (attr.fill_flag || attr.fill_gradient.get_gradient_type() != NO_GRADIENT)
{
ras.reset();
if(fabs(curved_trans_contour.width()) <= 1)
{
ras.add_path(curved_trans, attr.index);
}
else
{
curved_trans_contour.miter_limit(attr.miter_limit);
ras.add_path(curved_trans_contour, attr.index);
}
ras.filling_rule(attr.even_odd_flag ? fill_even_odd : fill_non_zero);
ScanlineRenderer ren_s(ren);
ren_s.color(color);
render_scanlines(ras, sl, ren_s);
}
if (attr.stroke_flag || attr.stroke_gradient.get_gradient_type() != NO_GRADIENT)
{
curved_stroked_.width(attr.stroke_width);
//m_curved_stroked.line_join((attr.line_join == miter_join) ? miter_join_round : attr.line_join);
curved_stroked_.line_join(attr.line_join);
curved_stroked_.line_cap(attr.line_cap);
curved_stroked_.miter_limit(attr.miter_limit);
curved_stroked_.inner_join(inner_round);
curved_stroked_.approximation_scale(scl);
// If the *visual* line width is considerable we
// turn on processing of curve cusps.
//---------------------
if(attr.stroke_width * scl > 1.0)
{
curved_.angle_tolerance(0.2);
}
ras.reset();
ras.add_path(curved_stroked_trans, attr.index);
ras.filling_rule(fill_non_zero);
ScanlineRenderer ren_s(ren);
ren_s.color(color);
render_scanlines(ras, sl, ren_s);
}
}
}
void render(Rasterizer& ras,
Scanline& sl,
Renderer& ren,
agg::trans_affine const& mtx,
double opacity,
box2d<double> const& symbol_bbox)
{
using namespace agg;
trans_affine transform;
curved_stroked_trans_type curved_stroked_trans(curved_stroked_,transform);
curved_trans_type curved_trans(curved_,transform);
curved_trans_contour_type curved_trans_contour(curved_trans);
curved_trans_contour.auto_detect_orientation(true);
for(unsigned i = 0; i < attributes_.size(); ++i)
{
mapnik::svg::path_attributes const& attr = attributes_[i];
if (!attr.visibility_flag)
continue;
transform = attr.transform;
transform *= mtx;
double scl = transform.scale();
//curved_.approximation_method(curve_inc);
curved_.approximation_scale(scl);
curved_.angle_tolerance(0.0);
typename PixelFormat::color_type color;
if (attr.fill_flag || attr.fill_gradient.get_gradient_type() != NO_GRADIENT)
{
ras.reset();
// https://github.com/mapnik/mapnik/issues/1129
if(std::fabs(curved_trans_contour.width()) <= 1)
{
ras.add_path(curved_trans, attr.index);
}
else
{
curved_trans_contour.miter_limit(attr.miter_limit);
ras.add_path(curved_trans_contour, attr.index);
}
if(attr.fill_gradient.get_gradient_type() != NO_GRADIENT)
{
render_gradient(ras, sl, ren, attr.fill_gradient, transform, attr.fill_opacity * attr.opacity * opacity, symbol_bbox, curved_trans, attr.index);
}
else
{
ras.filling_rule(attr.even_odd_flag ? fill_even_odd : fill_non_zero);
color = attr.fill_color;
color.opacity(color.opacity() * attr.fill_opacity * attr.opacity * opacity);
ScanlineRenderer ren_s(ren);
color.premultiply();
ren_s.color(color);
render_scanlines(ras, sl, ren_s);
}
}
if (attr.stroke_flag || attr.stroke_gradient.get_gradient_type() != NO_GRADIENT)
{
curved_stroked_.width(attr.stroke_width);
//m_curved_stroked.line_join((attr.line_join == miter_join) ? miter_join_round : attr.line_join);
curved_stroked_.line_join(attr.line_join);
curved_stroked_.line_cap(attr.line_cap);
curved_stroked_.miter_limit(attr.miter_limit);
curved_stroked_.inner_join(inner_round);
curved_stroked_.approximation_scale(scl);
// If the *visual* line width is considerable we
// turn on processing of curve cusps.
//---------------------
if(attr.stroke_width * scl > 1.0)
{
curved_.angle_tolerance(0.2);
}
ras.reset();
ras.add_path(curved_stroked_trans, attr.index);
if(attr.stroke_gradient.get_gradient_type() != NO_GRADIENT)
{
render_gradient(ras, sl, ren, attr.stroke_gradient, transform, attr.stroke_opacity * attr.opacity * opacity, symbol_bbox, curved_trans, attr.index);
}
else
{
ras.filling_rule(fill_non_zero);
color = attr.stroke_color;
color.opacity(color.opacity() * attr.stroke_opacity * attr.opacity * opacity);
ScanlineRenderer ren_s(ren);
color.premultiply();
ren_s.color(color);
render_scanlines(ras, sl, ren_s);
}
}
}
}