pcb2gcode/board.cpp at master · schumar/pcb2gcode · GitHub

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/*
 * This file is part of pcb2gcode.
 *
 * Copyright (C) 2009, 2010 Patrick Birnzain <pbirnzain@users.sourceforge.net>
 * Copyright (C) 2015 Nicola Corna <nicola@corna.info>
 *
 * pcb2gcode is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * pcb2gcode is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with pcb2gcode. If not, see <http://www.gnu.org/licenses/>.
*/

#include"board.hpp"
#include<memory>
using std::shared_ptr;
using std::make_shared;
using std::dynamic_pointer_cast;

#include<string>
using std::string;

using std::get;
using std::static_pointer_cast;

#include<utility>
using std::pair;

#include<vector>
using std::vector;

#include"bg_operators.hpp"

typedef pair<string, shared_ptr<Layer> > layer_t;

/******************************************************************************/
/*
*/
/******************************************************************************/
Board::Board(bool fill_outline, string outputdir, bool tsp_2opt,
 MillFeedDirection::MillFeedDirection mill_feed_direction, bool invert_gerbers,
bool render_paths_to_shapes) :
 margin(0.0),
 fill_outline(fill_outline),
 outputdir(outputdir),
 tsp_2opt(tsp_2opt),
 mill_feed_direction(mill_feed_direction),
 invert_gerbers(invert_gerbers),
 render_paths_to_shapes(render_paths_to_shapes) {}

doubleBoard::get_width() {
if (layers.size() < 1) {
return0;
 }
return layers.begin()->second->surface->get_width_in();
}

doubleBoard::get_height() {
if (layers.size() < 1) {
return0;
 }
return layers.begin()->second->surface->get_height_in();
}

voidBoard::prepareLayer(string layername, shared_ptr<GerberImporter> importer, shared_ptr<RoutingMill> manufacturer, bool backside, bool ymirror) {
// see comment for prep_t in board.hpp
 prepared_layers.insert(std::make_pair(layername, make_tuple(importer, manufacturer, backside, ymirror)));
}

/******************************************************************************/
/*
*/
/******************************************************************************/
voidBoard::createLayers()
{
if (!prepared_layers.size())
return; // Nothing to do.

// start calculating the minimal board size

// Calculate the maximum possible room needed by the PCB traces, for tiling later.
constauto outline = prepared_layers.find("outline");
if (outline != prepared_layers.cend() &&
 (get<0>(outline->second)->get_bounding_box().min_corner() <
 get<0>(outline->second)->get_bounding_box().max_corner())) {
 shared_ptr<Cutter> outline_mill = static_pointer_cast<Cutter>(get<1>(outline->second));
constauto& importer = get<0>(outline->second);
 coordinate_type_fp tool_diameter = outline_mill->tool_diameter;
 bounding_box = bg::return_buffer<box_type_fp>(importer->get_bounding_box(), tool_diameter);
 } else {
for (constauto& layer_name : std::vector<std::string>{"front", "back"}) {
constauto current_layer = prepared_layers.find(layer_name);
if (current_layer != prepared_layers.cend()) {
 shared_ptr<Isolator> trace_mill = static_pointer_cast<Isolator>(get<1>(current_layer->second));
constauto& importer = get<0>(current_layer->second);
for (constauto& tool : trace_mill->tool_diameters_and_overlap_widths) {
// Testing showed that 2 was not enough by 3 and above remove all
// the small connecting lines that would potentially be created.
double extra_passes_margin = trace_mill->tolerance * 3;
if (!invert_gerbers) {
auto tool_diameter = tool.first;
auto overlap_width = tool.second;
auto extra_passes = std::max(
int(std::ceil((trace_mill->isolation_width - tool_diameter) / (tool_diameter - overlap_width))),
 trace_mill->extra_passes);
// Figure out how much margin the extra passes might make.
 extra_passes_margin = tool_diameter + (tool_diameter - overlap_width) * extra_passes;
 }
auto current_bounding_box = bg::return_buffer<box_type_fp>(importer->get_bounding_box(), extra_passes_margin + trace_mill->offset);
bg::expand(bounding_box, current_bounding_box);
 }
 }
 }
 }

// board size calculated. create layers
for (constauto& prepared_layer : prepared_layers) {
// prepare the surface
 shared_ptr<GerberImporter> importer = get<0>(prepared_layer.second);
constbool fill = fill_outline && prepared_layer.first == "outline";

auto surface = make_shared<Surface_vectorial>(
30,
 bounding_box,
 prepared_layer.first, outputdir, tsp_2opt,
 mill_feed_direction, invert_gerbers,
 render_paths_to_shapes || (prepared_layer.first == "outline"));
if (fill) {
 surface->enable_filling();
 }
 surface->render(importer, get<1>(prepared_layer.second)->optimise);
auto layer = make_shared<Layer>(prepared_layer.first,
 surface,
 get<1>(prepared_layer.second),
 get<2>(prepared_layer.second),
 get<3>(prepared_layer.second)); // see comment for prep_t in board.hpp
 layers.insert(std::make_pair(layer->get_name(), layer));
 }

// DEBUG output
for (layer_t layer : layers) {
 layer.second->surface->save_debug_image(string("original_") + layer.second->get_name());
 }

// mask layers with outline
if (outline != prepared_layers.cend() &&
 (get<0>(outline->second)->get_bounding_box().min_corner() <
 get<0>(outline->second)->get_bounding_box().max_corner())) {
 shared_ptr<Layer> outline_layer = layers.at("outline");

for (constauto& layer : layers) {
if (layer.second != outline_layer) {
 layer.second->add_mask(outline_layer);
 layer.second->surface->save_debug_image(string("masked_") + layer.second->get_name());
 }
 }
 }
}

/******************************************************************************/
/*
*/
/******************************************************************************/
vector<string> Board::list_layers()
{
 vector<string> layerlist;

for ( layer_t layer : layers )
 {
 layerlist.push_back(layer.first);
 }

return layerlist;
}

/******************************************************************************/
/*
*/
/******************************************************************************/
shared_ptr<Layer> Board::get_layer(string layername)
{
return layers.at(layername);
}