示例#1
0
    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);
            }
        }
    }
示例#2
0
    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;
    }
示例#3
0
    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);
                }
            }
        }
    }