void roadmap_canvas_draw_multiple_lines (int count, int *lines,
RoadMapGuiPoint *points, int fast_draw) {
int i;
int count_of_points;
dbg_time_start(DBG_TIME_DRAW_LINES);
#ifdef WIN32_PROFILE
ResumeCAPAll();
#endif
#ifdef _WIN32_
if (fast_draw) {
roadmap_canvas_native_draw_multiple_lines (count, lines, points,
CurrentPen->color.r, CurrentPen->color.g, CurrentPen->color.b,
CurrentPen->thickness);
return;
}
#endif
if (!fast_draw) {
raso.round_cap(true);
raso.line_join(agg::outline_miter_accurate_join);
} else {
raso.round_cap(false);
raso.line_join(agg::outline_no_join);
}
// raso.accurate_join(true);
static agg::path_storage path;
for (i = 0; i < count; ++i) {
int first = 1;
count_of_points = *lines;
if (count_of_points < 2) continue;
dbg_time_start(DBG_TIME_CREATE_PATH);
for (int j=0; j<count_of_points; j++) {
if (first) {
first = 0;
path.move_to(points->x, points->y);
} else {
path.line_to(points->x, points->y);
}
points++;
}
dbg_time_end(DBG_TIME_CREATE_PATH);
dbg_time_start(DBG_TIME_ADD_PATH);
#if 0
if (fast_draw) {
renderer_pr ren_pr(agg_renb);
agg::rasterizer_outline<renderer_pr> ras_line(ren_pr);
ren_pr.line_color(CurrentPen->color);
ras_line.add_path(path);
} else {
#endif
raso.add_path(path);
//}
path.remove_all ();
dbg_time_end(DBG_TIME_ADD_PATH);
lines += 1;
}
#ifdef WIN32_PROFILE
SuspendCAPAll();
#endif
return;
dbg_time_end(DBG_TIME_DRAW_LINES);
}
void roadmap_canvas_draw_multiple_polygons
(int count, int *polygons, RoadMapGuiPoint *points, int filled,
int fast_draw) {
int i;
int count_of_points;
static agg::path_storage path;
for (i = 0; i < count; ++i) {
count_of_points = *polygons;
int first = 1;
for (int j=0; j<count_of_points; j++) {
if (first) {
first = 0;
path.move_to(points->x, points->y);
} else {
path.line_to(points->x, points->y);
}
points++;
}
path.close_polygon();
if (filled) {
ras.reset();
ras.add_path(path);
ren_solid.color(CurrentPen->color);
agg::render_scanlines( ras, sl, ren_solid);
} else if (fast_draw) {
renderer_pr ren_pr(agg_renb);
agg::rasterizer_outline<renderer_pr> ras_line(ren_pr);
ren_pr.line_color(CurrentPen->color);
ras_line.add_path(path);
} else {
raso.add_path(path);
}
path.remove_all ();
polygons += 1;
}
}
virtual void on_draw()
{
pixfmt pf(rbuf_window());
renderer_base ren_base(pf);
ren_base.clear(agg::rgba(0.5, 0.75, 0.85));
renderer_scanline ren(ren_base);
rasterizer_scanline ras;
scanline sl;
ras.clip_box(0, 0, width(), height());
// Pattern source. Must have an interface:
// width() const
// height() const
// pixel(int x, int y) const
// Any agg::renderer_base<> or derived
// is good for the use as a source.
//-----------------------------------
pattern_src_brightness_to_alpha_rgba8 p1(rbuf_img(0));
agg::pattern_filter_bilinear_rgba8 fltr; // Filtering functor
// agg::line_image_pattern is the main container for the patterns. It creates
// a copy of the patterns extended according to the needs of the filter.
// agg::line_image_pattern can operate with arbitrary image width, but if the
// width of the pattern is power of 2, it's better to use the modified
// version agg::line_image_pattern_pow2 because it works about 15-25 percent
// faster than agg::line_image_pattern (because of using simple masking instead
// of expensive '%' operation).
typedef agg::line_image_pattern<agg::pattern_filter_bilinear_rgba8> pattern_type;
typedef agg::renderer_base<pixfmt> base_ren_type;
typedef agg::renderer_outline_image<base_ren_type, pattern_type> renderer_img_type;
typedef agg::rasterizer_outline_aa<renderer_img_type, agg::line_coord_sat> rasterizer_img_type;
typedef agg::renderer_outline_aa<base_ren_type> renderer_line_type;
typedef agg::rasterizer_outline_aa<renderer_line_type, agg::line_coord_sat> rasterizer_line_type;
//-- Create with specifying the source
//pattern_type patt(fltr, src);
//-- Create uninitialized and set the source
pattern_type patt(fltr);
patt.create(p1);
renderer_img_type ren_img(ren_base, patt);
rasterizer_img_type ras_img(ren_img);
//-- create uninitialized and set parameters
agg::line_profile_aa profile;
profile.smoother_width(10.0); //optional
profile.width(8.0); //mandatory!
renderer_line_type ren_line(ren_base, profile);
ren_line.color(agg::rgba8(0,0,127)); //mandatory!
rasterizer_line_type ras_line(ren_line);
ras_line.round_cap(true); //optional
//ras_line.line_join(agg::outline_no_join); //optional
// Calculate the dilation value so that, the line caps were
// drawn correctly.
//---------------
double w2 = 9.0;//p1.height() / 2 + 2;
// Set the clip box a bit bigger than you expect. You need it
// to draw the clipped line caps correctly. The correct result
// is achieved with raster clipping.
//------------------------
ren_img.scale_x(m_scale_x.value());
ren_img.start_x(m_start_x.value());
ren_img.clip_box (50-w2, 50-w2, width()-50+w2, height()-50+w2);
ren_line.clip_box(50-w2, 50-w2, width()-50+w2, height()-50+w2);
// First, draw polyline without raster clipping just to show the idea
//------------------------
draw_polyline(ras_line, ren_line, m_line1.polygon(), m_line1.num_points());
draw_polyline(ras_img, ren_img, m_line1.polygon(), m_line1.num_points());
// Clear the area, almost opaque, but not completely
//------------------------
ren_base.blend_bar(0, 0, (int)width(), (int)height(), agg::rgba(1,1,1), 200);
// Set the raster clip box and then, draw again.
// In reality there shouldn't be two calls above.
// It's done only for demonstration
//------------------------
ren_base.clip_box((int)50, (int)50, (int)width()-50, (int)height()-50);
// This "copy_bar" is also for demonstration only
//------------------------
ren_base.copy_bar(0, 0, (int)width(), (int)height(), agg::rgba(1,1,1));
// Finally draw polyline correctly clipped: We use double clipping,
// first is vector clipping, with extended clip box, second is raster
// clipping with normal clip box.
//------------------------
ren_img.scale_x(m_scale_x.value());
ren_img.start_x(m_start_x.value());
draw_polyline(ras_line, ren_line, m_line1.polygon(), m_line1.num_points());
draw_polyline(ras_img, ren_img, m_line1.polygon(), m_line1.num_points());
// Reset clipping and draw the controls and stuff
ren_base.reset_clipping(true);
m_line1.line_width(1/m_scale.scale());
m_line1.point_radius(5/m_scale.scale());
agg::render_ctrl(ras, sl, ren_base, m_line1);
agg::render_ctrl(ras, sl, ren_base, m_scale_x);
agg::render_ctrl(ras, sl, ren_base, m_start_x);
char buf[256];
agg::gsv_text t;
t.size(10.0);
agg::conv_stroke<agg::gsv_text> pt(t);
pt.width(1.5);
pt.line_cap(agg::round_cap);
const double* p = m_line1.polygon();
sprintf(buf, "Len=%.2f", agg::calc_distance(p[0], p[1], p[2], p[3]) * m_scale.scale());
t.start_point(10.0, 30.0);
t.text(buf);
ras.add_path(pt);
ren.color(agg::rgba(0,0,0));
agg::render_scanlines(ras, sl, ren);
}
