public override void on_draw()
{
pixfmt_alpha_blend_rgb pf = new pixfmt_alpha_blend_rgb(rbuf_window(), new blender_bgr());
renderer_base ren_base = new renderer_base(pf);
ren_base.clear(new rgba(1.0, 1.0, 0.95));
renderer_scanline_aa_solid ren = new renderer_scanline_aa_solid(ren_base);
rasterizer_scanline_aa ras = new rasterizer_scanline_aa();
scanline_unpacked_8 sl = new scanline_unpacked_8();
path_storage path = new path_storage(new vertex_block_storage());
double x, y;
double curve_time = 0;
path.remove_all();
curve4 curve;
curve.approximation_method(curve_approximation_method_e(m_curve_type.cur_item()));
curve.approximation_scale(m_approximation_scale.value());
curve.angle_tolerance(deg2rad(m_angle_tolerance.value()));
curve.cusp_limit(deg2rad(m_cusp_limit.value()));
curve_time = measure_time(curve);
double max_angle_error_01 = 0;
double max_angle_error_1 = 0;
double max_angle_error1 = 0;
double max_angle_error_10 = 0;
double max_angle_error_100 = 0;
double max_error_01 = 0;
double max_error_1 = 0;
double max_error1 = 0;
double max_error_10 = 0;
double max_error_100 = 0;
max_error_01 = calc_max_error(curve, 0.01, &max_angle_error_01);
max_error_1 = calc_max_error(curve, 0.1, &max_angle_error_1);
max_error1 = calc_max_error(curve, 1, &max_angle_error1);
max_error_10 = calc_max_error(curve, 10, &max_angle_error_10);
max_error_100 = calc_max_error(curve, 100, &max_angle_error_100);
curve.approximation_scale(m_approximation_scale.value());
curve.angle_tolerance(deg2rad(m_angle_tolerance.value()));
curve.cusp_limit(deg2rad(m_cusp_limit.value()));
curve.init(m_curve1.x1(), m_curve1.y1(),
m_curve1.x2(), m_curve1.y2(),
m_curve1.x3(), m_curve1.y3(),
m_curve1.x4(), m_curve1.y4());
path.concat_path(curve);
//path.move_to(m_curve1.x1(), m_curve1.y1());
//path.line_to(m_curve1.x2(), m_curve1.y2());
//path.line_to(m_curve1.x3(), m_curve1.y3());
//path.line_to(m_curve1.x4(), m_curve1.y4());
conv_stroke stroke = new conv_stroke(path);
stroke.width(m_width.value());
stroke.line_join(line_join_e(m_line_join.cur_item()));
stroke.line_cap(line_cap_e(m_line_cap.cur_item()));
stroke.inner_join(inner_join_e(m_inner_join.cur_item()));
stroke.inner_miter_limit(1.01);
ras.add_path(stroke);
ren.color(rgba(0, 0.5, 0, 0.5));
render_scanlines(ras, sl, ren);
uint cmd;
uint num_points1 = 0;
path.rewind(0);
while (!is_stop(cmd = path.vertex(&x, &y)))
{
if (m_show_points.status())
{
Shape.Ellipse ell = new agg.Shape.Ellipse(x, y, 1.5, 1.5, 8);
ras.add_path(ell);
ren.color(rgba(0, 0, 0, 0.5));
render_scanlines(ras, sl, ren);
}
++num_points1;
}
if (m_show_outline.status())
{
// Draw a stroke of the stroke to see the internals
//--------------
conv_stroke stroke2 = new conv_stroke(stroke);
ras.add_path(stroke2);
ren.color(rgba(0, 0, 0, 0.5));
render_scanlines(ras, sl, ren);
}
// Check ellipse and arc for the number of points
//---------------
//ellipse a(100, 100, m_width.value(), m_width.value(), 0);
//ras.add_path(a);
//ren.color(rgba(0.5,0,0, 0.5));
//render_scanlines(ras, sl, ren);
//a.rewind(0);
//while(!is_stop(cmd = a.vertex(&x, &y)))
//{
// if(is_vertex(cmd))
// {
// ellipse ell(x, y, 1.5, 1.5, 8);
// ras.add_path(ell);
// ren.color(rgba(0,0,0,0.5));
// render_scanlines(ras, sl, ren);
// }
//}
// Check a circle with huge radius (10,000,000) and high approximation accuracy
//---------------
//double circle_pnt_count = 0;
//bezier_arc ell(0,0, 10000000, 10000000, 0, 2*pi);
//conv_curve<bezier_arc, curve3_div, curve4_div3> crv(ell);
//crv.approximation_scale(10.0);
//crv.rewind(0);
//while(crv.vertex(&x, &y)) ++circle_pnt_count;
string buf;
gsv_text t;
t.size(8.0);
conv_stroke pt = new conv_stroke(t);
pt.line_cap(round_cap);
pt.line_join(round_join);
pt.width(1.5);
/*
* sprintf(buf, "Num Points=%d Time=%.2fmks\n\n"
* " Dist Error: x0.01=%.5f x0.1=%.5f x1=%.5f x10=%.5f x100=%.5f\n\n"
* "Angle Error: x0.01=%.1f x0.1=%.1f x1=%.1f x10=%.1f x100=%.1f",
* num_points1, curve_time,
* max_error_01,
* max_error_1,
* max_error1,
* max_error_10,
* max_error_100,
* max_angle_error_01,
* max_angle_error_1,
* max_angle_error1,
* max_angle_error_10,
* max_angle_error_100);
*/
t.start_point(10.0, 85.0);
t.text(buf);
ras.add_path(pt);
ren.color(rgba(0, 0, 0));
render_scanlines(ras, sl, ren);
render_ctrl(ras, sl, ren_base, m_curve1);
render_ctrl(ras, sl, ren_base, m_angle_tolerance);
render_ctrl(ras, sl, ren_base, m_approximation_scale);
render_ctrl(ras, sl, ren_base, m_cusp_limit);
render_ctrl(ras, sl, ren_base, m_width);
render_ctrl(ras, sl, ren_base, m_show_points);
render_ctrl(ras, sl, ren_base, m_show_outline);
render_ctrl(ras, sl, ren_base, m_curve_type);
render_ctrl(ras, sl, ren_base, m_case_type);
render_ctrl(ras, sl, ren_base, m_inner_join);
render_ctrl(ras, sl, ren_base, m_line_join);
render_ctrl(ras, sl, ren_base, m_line_cap);
}
//typedef renderer_base<pixfmt> renderer_base;
//typedef renderer_scanline_aa_solid<renderer_base> renderer_scanline;
//typedef rasterizer_scanline_aa<> rasterizer_scanline;
//typedef scanline_u8 scanline;
public bezier_div_application(pix_format_e format, platform_support_abstract.ERenderOrigin RenderOrigin)
: base(format, RenderOrigin)
{
m_ctrl_color = new rgba8(new rgba(0, 0.3, 0.5, 0.8));
m_angle_tolerance = new slider_ctrl(5.0, 5.0, 240.0, 12.0);
m_approximation_scale = new slider_ctrl(5.0, 17 + 5.0, 240.0, 17 + 12.0);
m_cusp_limit = new slider_ctrl(5.0, 17 + 17 + 5.0, 240.0, 17 + 17 + 12.0);
m_width = new slider_ctrl(245.0, 5.0, 495.0, 12.0);
m_show_points = new cbox_ctrl(250.0, 15 + 5, "Show Points");
m_show_outline = new cbox_ctrl(250.0, 30 + 5, "Show Stroke Outline");
m_curve_type = new rbox_ctrl(535.0, 5.0, 535.0 + 115.0, 55.0);
m_case_type = new rbox_ctrl(535.0, 60.0, 535.0 + 115.0, 195.0);
m_inner_join = new rbox_ctrl(535.0, 200.0, 535.0 + 115.0, 290.0);
m_line_join = new rbox_ctrl(535.0, 295.0, 535.0 + 115.0, 385.0);
m_line_cap = new rbox_ctrl(535.0, 395.0, 535.0 + 115.0, 455.0);
m_cur_case_type = (-1);
m_curve1.line_color(m_ctrl_color);
m_curve1.curve(170, 424, 13, 87, 488, 423, 26, 333);
//m_curve1.curve(26.000, 333.000, 276.000, 126.000, 402.000, 479.000, 26.000, 333.000); // Loop with p1==p4
//m_curve1.curve(378.000, 439.000, 378.000, 497.000, 487.000, 432.000, 14.000, 338.000); // Narrow loop
//m_curve1.curve(288.000, 283.000, 232.000, 89.000, 66.000, 197.000, 456.000, 241.000); // Loop
//m_curve1.curve(519.000, 142.000, 97.000, 147.000, 69.000, 147.000, 30.000, 144.000); // Almost straight
//m_curve1.curve(100, 100, 200, 100, 100, 200, 200, 200); // A "Z" case
//m_curve1.curve(150, 150, 350, 150, 150, 150, 350, 150); // Degenerate
//m_curve1.curve(409, 330, 300, 200, 200, 200, 401, 263); // Strange cusp
//m_curve1.curve(129, 233, 172, 320, 414, 253, 344, 236); // Curve cap
//m_curve1.curve(100,100, 100,200, 100,100, 110,100); // A "boot"
//m_curve1.curve(225, 150, 60, 150, 460, 150, 295, 150); // 2----1----4----3
//m_curve1.curve(162.2, 248.801, 162.2, 248.801, 266, 284, 394, 335); // Coinciding 1-2
//m_curve1.curve(162.200, 248.801, 162.200, 248.801, 257.000, 301.000, 394.000, 335.000); // Coinciding 1-2
//m_curve1.curve(394.000, 335.000, 257.000, 301.000, 162.200, 248.801, 162.200, 248.801); // Coinciding 3-4
//m_curve1.curve(84.200000,302.80100, 84.200000,302.80100, 79.000000,292.40100, 97.001000,304.40100); // From tiger.svg
//m_curve1.curve(97.001000,304.40100, 79.000000,292.40100, 84.200000,302.80100, 84.200000,302.80100); // From tiger.svg opposite dir
//m_curve1.curve(475, 157, 200, 100, 453, 100, 222, 157); // Cusp, failure for Adobe SVG
add_ctrl(m_curve1);
m_curve1.no_transform();
m_angle_tolerance.label("Angle Tolerance=%.0f deg");
m_angle_tolerance.range(0, 90);
m_angle_tolerance.value(15);
add_ctrl(m_angle_tolerance);
m_angle_tolerance.no_transform();
m_approximation_scale.label("Approximation Scale=%.3f");
m_approximation_scale.range(0.1, 5);
m_approximation_scale.value(1.0);
add_ctrl(m_approximation_scale);
m_approximation_scale.no_transform();
m_cusp_limit.label("Cusp Limit=%.0f deg");
m_cusp_limit.range(0, 90);
m_cusp_limit.value(0);
add_ctrl(m_cusp_limit);
m_cusp_limit.no_transform();
m_width.label("Width=%.2f");
m_width.range(-50, 100);
m_width.value(50.0);
add_ctrl(m_width);
m_width.no_transform();
add_ctrl(m_show_points);
m_show_points.no_transform();
m_show_points.status(true);
add_ctrl(m_show_outline);
m_show_outline.no_transform();
m_show_outline.status(true);
m_curve_type.add_item("Incremental");
m_curve_type.add_item("Subdiv");
m_curve_type.cur_item(1);
add_ctrl(m_curve_type);
m_curve_type.no_transform();
m_case_type.text_size(7);
m_case_type.text_thickness(1.0);
m_case_type.add_item("Random");
m_case_type.add_item("13---24");
m_case_type.add_item("Smooth Cusp 1");
m_case_type.add_item("Smooth Cusp 2");
m_case_type.add_item("Real Cusp 1");
m_case_type.add_item("Real Cusp 2");
m_case_type.add_item("Fancy Stroke");
m_case_type.add_item("Jaw");
m_case_type.add_item("Ugly Jaw");
add_ctrl(m_case_type);
m_case_type.no_transform();
m_inner_join.text_size(8);
m_inner_join.add_item("Inner Bevel");
m_inner_join.add_item("Inner Miter");
m_inner_join.add_item("Inner Jag");
m_inner_join.add_item("Inner Round");
m_inner_join.cur_item(3);
add_ctrl(m_inner_join);
m_inner_join.no_transform();
m_line_join.text_size(8);
m_line_join.add_item("Miter Join");
m_line_join.add_item("Miter Revert");
m_line_join.add_item("Round Join");
m_line_join.add_item("Bevel Join");
m_line_join.add_item("Miter Round");
m_line_join.cur_item(1);
add_ctrl(m_line_join);
m_line_join.no_transform();
m_line_cap.text_size(8);
m_line_cap.add_item("Butt Cap");
m_line_cap.add_item("Square Cap");
m_line_cap.add_item("Round Cap");
m_line_cap.cur_item(0);
add_ctrl(m_line_cap);
m_line_cap.no_transform();
}
//typedef renderer_base<pixfmt> renderer_base;
//typedef renderer_scanline_aa_solid<renderer_base> renderer_scanline;
//typedef rasterizer_scanline_aa<> rasterizer_scanline;
//typedef scanline_u8 scanline;
public bezier_div_application(pix_format_e format, platform_support_abstract.ERenderOrigin RenderOrigin)
: base(format, RenderOrigin)
{
m_ctrl_color = new rgba8(new rgba(0, 0.3, 0.5, 0.8));
m_angle_tolerance = new slider_ctrl(5.0, 5.0, 240.0, 12.0);
m_approximation_scale = new slider_ctrl(5.0, 17+5.0, 240.0, 17+12.0);
m_cusp_limit = new slider_ctrl(5.0, 17+17+5.0, 240.0, 17+17+12.0);
m_width = new slider_ctrl(245.0, 5.0, 495.0, 12.0);
m_show_points = new cbox_ctrl(250.0, 15+5, "Show Points");
m_show_outline = new cbox_ctrl(250.0, 30+5, "Show Stroke Outline");
m_curve_type = new rbox_ctrl(535.0, 5.0, 535.0+115.0, 55.0);
m_case_type = new rbox_ctrl(535.0, 60.0, 535.0+115.0, 195.0);
m_inner_join = new rbox_ctrl(535.0, 200.0, 535.0+115.0, 290.0);
m_line_join = new rbox_ctrl(535.0, 295.0, 535.0+115.0, 385.0);
m_line_cap = new rbox_ctrl(535.0, 395.0, 535.0+115.0, 455.0);
m_cur_case_type = (-1);
m_curve1.line_color(m_ctrl_color);
m_curve1.curve(170, 424, 13, 87, 488, 423, 26, 333);
//m_curve1.curve(26.000, 333.000, 276.000, 126.000, 402.000, 479.000, 26.000, 333.000); // Loop with p1==p4
//m_curve1.curve(378.000, 439.000, 378.000, 497.000, 487.000, 432.000, 14.000, 338.000); // Narrow loop
//m_curve1.curve(288.000, 283.000, 232.000, 89.000, 66.000, 197.000, 456.000, 241.000); // Loop
//m_curve1.curve(519.000, 142.000, 97.000, 147.000, 69.000, 147.000, 30.000, 144.000); // Almost straight
//m_curve1.curve(100, 100, 200, 100, 100, 200, 200, 200); // A "Z" case
//m_curve1.curve(150, 150, 350, 150, 150, 150, 350, 150); // Degenerate
//m_curve1.curve(409, 330, 300, 200, 200, 200, 401, 263); // Strange cusp
//m_curve1.curve(129, 233, 172, 320, 414, 253, 344, 236); // Curve cap
//m_curve1.curve(100,100, 100,200, 100,100, 110,100); // A "boot"
//m_curve1.curve(225, 150, 60, 150, 460, 150, 295, 150); // 2----1----4----3
//m_curve1.curve(162.2, 248.801, 162.2, 248.801, 266, 284, 394, 335); // Coinciding 1-2
//m_curve1.curve(162.200, 248.801, 162.200, 248.801, 257.000, 301.000, 394.000, 335.000); // Coinciding 1-2
//m_curve1.curve(394.000, 335.000, 257.000, 301.000, 162.200, 248.801, 162.200, 248.801); // Coinciding 3-4
//m_curve1.curve(84.200000,302.80100, 84.200000,302.80100, 79.000000,292.40100, 97.001000,304.40100); // From tiger.svg
//m_curve1.curve(97.001000,304.40100, 79.000000,292.40100, 84.200000,302.80100, 84.200000,302.80100); // From tiger.svg opposite dir
//m_curve1.curve(475, 157, 200, 100, 453, 100, 222, 157); // Cusp, failure for Adobe SVG
add_ctrl(m_curve1);
m_curve1.no_transform();
m_angle_tolerance.label("Angle Tolerance=%.0f deg");
m_angle_tolerance.range(0, 90);
m_angle_tolerance.value(15);
add_ctrl(m_angle_tolerance);
m_angle_tolerance.no_transform();
m_approximation_scale.label("Approximation Scale=%.3f");
m_approximation_scale.range(0.1, 5);
m_approximation_scale.value(1.0);
add_ctrl(m_approximation_scale);
m_approximation_scale.no_transform();
m_cusp_limit.label("Cusp Limit=%.0f deg");
m_cusp_limit.range(0, 90);
m_cusp_limit.value(0);
add_ctrl(m_cusp_limit);
m_cusp_limit.no_transform();
m_width.label("Width=%.2f");
m_width.range(-50, 100);
m_width.value(50.0);
add_ctrl(m_width);
m_width.no_transform();
add_ctrl(m_show_points);
m_show_points.no_transform();
m_show_points.status(true);
add_ctrl(m_show_outline);
m_show_outline.no_transform();
m_show_outline.status(true);
m_curve_type.add_item("Incremental");
m_curve_type.add_item("Subdiv");
m_curve_type.cur_item(1);
add_ctrl(m_curve_type);
m_curve_type.no_transform();
m_case_type.text_size(7);
m_case_type.text_thickness(1.0);
m_case_type.add_item("Random");
m_case_type.add_item("13---24");
m_case_type.add_item("Smooth Cusp 1");
m_case_type.add_item("Smooth Cusp 2");
m_case_type.add_item("Real Cusp 1");
m_case_type.add_item("Real Cusp 2");
m_case_type.add_item("Fancy Stroke");
m_case_type.add_item("Jaw");
m_case_type.add_item("Ugly Jaw");
add_ctrl(m_case_type);
m_case_type.no_transform();
m_inner_join.text_size(8);
m_inner_join.add_item("Inner Bevel");
m_inner_join.add_item("Inner Miter");
m_inner_join.add_item("Inner Jag");
m_inner_join.add_item("Inner Round");
m_inner_join.cur_item(3);
add_ctrl(m_inner_join);
m_inner_join.no_transform();
m_line_join.text_size(8);
m_line_join.add_item("Miter Join");
m_line_join.add_item("Miter Revert");
m_line_join.add_item("Round Join");
m_line_join.add_item("Bevel Join");
m_line_join.add_item("Miter Round");
m_line_join.cur_item(1);
add_ctrl(m_line_join);
m_line_join.no_transform();
m_line_cap.text_size(8);
m_line_cap.add_item("Butt Cap");
m_line_cap.add_item("Square Cap");
m_line_cap.add_item("Round Cap");
m_line_cap.cur_item(0);
add_ctrl(m_line_cap);
m_line_cap.no_transform();
}