void perform_rendering(Scanline &sl, Ras &ras, Ren &ren, Clp &clp)
{
if(m_operation.cur_item() > 0)
{
ras.reset();
switch(m_operation.cur_item())
{
case 1: clp.operation(agg::clipper_or); break;
case 2: clp.operation(agg::clipper_and); break;
case 3: clp.operation(agg::clipper_xor); break;
case 4: clp.operation(agg::clipper_a_minus_b); break;
case 5: clp.operation(agg::clipper_b_minus_a); break;
}
agg::conv_poly_counter<Clp> counter(clp);
start_timer();
counter.rewind(0);
double t1 = elapsed_time();
ras.reset();
double x;
double y;
unsigned cmd;
start_timer();
while(!agg::is_stop(cmd = counter.vertex(&x, &y)))
{
ras.add_vertex(x, y, cmd);
}
ren.color(agg::rgba(0.5, 0.0, 0, 0.5));
agg::render_scanlines(ras, sl, ren);
double t2 = elapsed_time();
char buf[100];
sprintf_s(buf, "Contours: %d Points: %d", counter.m_contours, counter.m_points);
agg::gsv_text txt;
agg::conv_stroke<agg::gsv_text> txt_stroke(txt);
txt_stroke.width(1.5);
txt_stroke.line_cap(agg::round_cap);
txt.size(10.0);
txt.start_point(250, 5);
txt.text(buf);
ras.add_path(txt_stroke);
ren.color(agg::rgba(0.0, 0.0, 0.0));
agg::render_scanlines(ras, sl, ren);
sprintf_s(buf, "Clipper=%.3fms Render=%.3fms", t1, t2);
txt.start_point(250, 20);
txt.text(buf);
ras.add_path(txt_stroke);
ren.color(agg::rgba(0.0, 0.0, 0.0));
agg::render_scanlines(ras, sl, ren);
}
}
unsigned render_clipper(Scanline& sl, Ras& ras)
{
agg::pixfmt_bgr24 pf(rbuf_window());
agg::renderer_base<agg::pixfmt_bgr24> rb(pf);
agg::renderer_scanline_aa_solid<agg::renderer_base<agg::pixfmt_bgr24> > ren(rb);
switch(m_polygons.cur_item())
{
case 0:
{
//------------------------------------
// Two simple paths
//
agg::path_storage ps1;
agg::path_storage ps2;
agg::conv_clipper<agg::path_storage, agg::path_storage> clp(ps1, ps2, agg::clipper_or, agg::clipper_non_zero, agg::clipper_non_zero);
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+268, y+309);
ps1.line_to(x+325, y+261);
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);
ras.reset();
ras.add_path(ps1);
ren.color(agg::rgba(0, 0, 0, 0.1));
agg::render_scanlines(ras, sl, ren);
ras.reset();
ras.add_path(ps2);
ren.color(agg::rgba(0, 0.6, 0, 0.1));
agg::render_scanlines(ras, sl, ren);
perform_rendering(sl, ras, ren, clp);
}
break;
case 1:
{
//------------------------------------
// Closed stroke
//
agg::path_storage ps1;
agg::path_storage ps2;
agg::conv_stroke<agg::path_storage> stroke(ps2);
stroke.width(10.0);
agg::conv_clipper<agg::path_storage,
agg::conv_stroke<agg::path_storage> > clp(ps1, stroke, agg::clipper_or, agg::clipper_non_zero, agg::clipper_non_zero);
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+265-50, y+331);
ps1.line_to(x+363-50, y+249);
ps1.close_polygon(agg::path_flags_ccw);
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();
ras.reset();
ras.add_path(ps1);
ren.color(agg::rgba(0, 0, 0, 0.1));
agg::render_scanlines(ras, sl, ren);
ras.reset();
ras.add_path(stroke);
ren.color(agg::rgba(0, 0.6, 0, 0.1));
agg::render_scanlines(ras, sl, ren);
perform_rendering(sl, ras, ren, clp);
}
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);
agg::conv_clipper<agg::conv_transform<agg::path_storage>,
agg::conv_transform<agg::path_storage> > clp(trans_gb_poly, trans_arrows, agg::clipper_or, agg::clipper_non_zero, agg::clipper_non_zero);
ras.add_path(trans_gb_poly);
ren.color(agg::rgba(0.5, 0.5, 0, 0.1));
agg::render_scanlines(ras, sl, ren);
agg::conv_stroke<agg::conv_transform<agg::path_storage> > stroke_gb_poly(trans_gb_poly);
stroke_gb_poly.width(0.1);
ras.add_path(stroke_gb_poly);
ren.color(agg::rgba(0, 0, 0));
agg::render_scanlines(ras, sl, ren);
ras.add_path(trans_arrows);
ren.color(agg::rgba(0.0, 0.5, 0.5, 0.1));
agg::render_scanlines(ras, sl, ren);
perform_rendering(sl, ras, ren, clp);
}
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);
agg::conv_transform<agg::path_storage> trans_gb_poly(gb_poly, mtx);
agg::conv_clipper<agg::conv_transform<agg::path_storage>,
agg::conv_stroke<spiral> > clp(trans_gb_poly, stroke, agg::clipper_or, agg::clipper_non_zero, agg::clipper_non_zero);
ras.add_path(trans_gb_poly);
ren.color(agg::rgba(0.5, 0.5, 0, 0.1));
agg::render_scanlines(ras, sl, ren);
agg::conv_stroke<agg::conv_transform<agg::path_storage> > stroke_gb_poly(trans_gb_poly);
stroke_gb_poly.width(0.1);
ras.add_path(stroke_gb_poly);
ren.color(agg::rgba(0, 0, 0));
agg::render_scanlines(ras, sl, ren);
ras.add_path(stroke);
ren.color(agg::rgba(0.0, 0.5, 0.5, 0.1));
agg::render_scanlines(ras, sl, ren);
perform_rendering(sl, ras, ren, clp);
}
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);
agg::conv_clipper<agg::conv_stroke<spiral>,
agg::conv_curve<
agg::conv_transform<
agg::path_storage> > > clp(stroke, curve, agg::clipper_or, agg::clipper_non_zero, agg::clipper_non_zero);
ras.reset();
ras.add_path(stroke);
ren.color(agg::rgba(0, 0, 0, 0.1));
agg::render_scanlines(ras, sl, ren);
ras.reset();
ras.add_path(curve);
ren.color(agg::rgba(0, 0.6, 0, 0.1));
agg::render_scanlines(ras, sl, ren);
perform_rendering(sl, ras, ren, clp);
}
break;
}
return 0;
}