void add_path(T & path)
{
marker_placement_e placement_method = sym_.get_marker_placement();
box2d<double> bbox_(0,0, src_.width(),src_.height());
if (placement_method != MARKER_LINE_PLACEMENT)
{
double x = 0;
double y = 0;
if (placement_method == MARKER_INTERIOR_PLACEMENT)
{
if (!label::interior_position(path, x, y))
return;
}
else
{
if (!label::centroid(path, x, y))
return;
}
agg::trans_affine matrix = marker_trans_;
matrix.translate(x,y);
box2d<double> transformed_bbox = bbox_ * matrix;
if (sym_.get_allow_overlap() ||
detector_.has_placement(transformed_bbox))
{
render_raster_marker(matrix);
if (!sym_.get_ignore_placement())
{
detector_.insert(transformed_bbox);
}
if (!placed_)
{
pixmap_.add_feature(feature_);
placed_ = true;
}
}
}
else
{
markers_placement<T, label_collision_detector4> placement(path, bbox_, marker_trans_, detector_,
sym_.get_spacing() * scale_factor_,
sym_.get_max_error(),
sym_.get_allow_overlap());
double x, y, angle;
while (placement.get_point(x, y, angle))
{
agg::trans_affine matrix = marker_trans_;
matrix.rotate(angle);
matrix.translate(x, y);
render_raster_marker(matrix);
if (!placed_)
{
pixmap_.add_feature(feature_);
placed_ = true;
}
}
}
}
void add_path(T & path)
{
agg::scanline_bin sl_;
marker_placement_enum placement_method = get<marker_placement_enum>(sym_, keys::markers_placement_type, feature_, vars_, MARKER_POINT_PLACEMENT);
bool ignore_placement = get<bool>(sym_, keys::ignore_placement, feature_, vars_, false);
bool allow_overlap = get<bool>(sym_, keys::allow_overlap, feature_, vars_, false);
box2d<double> bbox(0,0, src_.width(), src_.height());
double spacing = get<double>(sym_, keys::spacing, feature_, vars_, 100.0);
double max_error = get<double>(sym_, keys::max_error, feature_, vars_, 0.2);
markers_placement_params params { bbox, marker_trans_, spacing * scale_factor_, max_error, allow_overlap };
markers_placement_finder<T, label_collision_detector4> placement_finder(
placement_method, path, detector_, params);
double x, y, angle = .0;
while (placement_finder.get_point(x, y, angle, ignore_placement))
{
agg::trans_affine matrix = marker_trans_;
matrix.rotate(angle);
matrix.translate(x, y);
render_raster_marker(matrix);
if (!placed_)
{
pixmap_.add_feature(feature_);
placed_ = true;
}
}
}
virtual void render_marker(image_rgba8 const& src,
markers_dispatch_params const& params,
agg::trans_affine const& marker_tr)
{
// In the long term this should be a visitor pattern based on the type of
// render src provided that converts the destination pixel type required.
render_raster_marker(renb_, ras_, src, marker_tr, params.opacity,
params.scale_factor, params.snap_to_pixels);
}
void render_marker(agg::trans_affine const& marker_tr, double opacity)
{
render_raster_marker(RendererType(renb_), ras_, this->src_, this->feature_, marker_tr, opacity);
if (!placed_)
{
pixmap_.add_feature(this->feature_);
placed_ = true;
}
}
void render_marker(agg::trans_affine const& marker_tr, double opacity)
{
// In the long term this should be a visitor pattern based on the type of render this->src_ provided that converts
// the destination pixel type required.
render_raster_marker(RendererType(renb_), ras_, this->src_, this->feature_, marker_tr, opacity);
if (!placed_)
{
pixmap_.add_feature(this->feature_);
placed_ = true;
}
}
virtual void operator()(raster_marker_render_thunk const& thunk)
{
using buf_type = grid_rendering_buffer;
using pixfmt_type = typename grid_renderer_base_type::pixfmt_type;
using renderer_type = agg::renderer_scanline_bin_solid<grid_renderer_base_type>;
buf_type render_buf(pixmap_.raw_data(), common_.width_, common_.height_, common_.width_);
ras_.reset();
pixfmt_type pixf(render_buf);
grid_renderer_base_type renb(pixf);
renderer_type ren(renb);
agg::trans_affine offset_tr = thunk.tr_;
offset_tr.translate(offset_.x, offset_.y);
render_raster_marker(ren, ras_, thunk.src_, feature_, offset_tr, thunk.opacity_);
pixmap_.add_feature(feature_);
}
virtual void operator()(raster_marker_render_thunk const& thunk)
{
using blender_type = agg::comp_op_adaptor_rgba_pre<agg::rgba8, agg::order_rgba>; // comp blender
using buf_type = agg::rendering_buffer;
using pixfmt_comp_type = agg::pixfmt_custom_blend_rgba<blender_type, buf_type>;
using renderer_base = agg::renderer_base<pixfmt_comp_type>;
ras_ptr_->reset();
buf_type render_buffer(buf_->bytes(), buf_->width(), buf_->height(), buf_->row_size());
pixfmt_comp_type pixf(render_buffer);
pixf.comp_op(static_cast<agg::comp_op_e>(thunk.comp_op_));
renderer_base renb(pixf);
agg::trans_affine offset_tr = thunk.tr_;
offset_tr.translate(offset_.x, offset_.y);
render_raster_marker(renb, *ras_ptr_, thunk.src_, offset_tr, thunk.opacity_, common_.scale_factor_, thunk.snap_to_pixels_);
}
