src/drawing.cpp (3c3d918) - dxfngc · BlinkenArea

drawing.cpp

/* drawing (DXF) to G-code (NGC) converter
 * Copyright 2013 Stefan Schuermans <stefan@schuermans.info>
 * Copyleft: CC-BY-SA http://creativecommons.org/licenses/by-sa/3.0/
 */

#include <dime/Input.h>
#include <dime/Model.h>
#include <iostream>
#include <map>
#include <string>

#include "drawing.h"
#include "layer.h"
#include "traverse.h"

/**
 * @brief clear all contents of drawing
 */
void Drawing::clear()
{
  mLayers.clear();
}

/**
 * @brief add a DXF file to this drawing
 * @param[in] strFileName name of the DXF file to read
 * @param[in] precision precision for entity to lines conversion
 * @return if the DXF file could be read
 */
bool Drawing::addDxf(const std::string &strFileName, double precision)
{
  // read DXF file
  dimeInput in;
  if (!in.setFile(strFileName.c_str())) {
    std::cerr << "error opening file \"" << strFileName
              << "\" for reading" << std::endl;
    return false;
  }
  dimeModel model;
  if (!model.read(&in)) {
    std::cerr << "DXF read error in line " << in.getFilePosition()
              << " of file \"" << strFileName << "\""
              << std::endl;
    return false;
  }

// enumerate all entities and add them to drawing
  struct traverse_ctx ctx;
  ctx.precision = precision;
  ctx.mpDrawing = this;
  model.traverseEntities(traverse_entity, &ctx);

return true;
}

/**
 * @brief load a DXF file to this drawing
 * @param[in] strFileName name of the DXF file to read
 * @param[in] precision precision for entity to lines conversion
 * @return if the DXF file could be read
 */
bool Drawing::loadDxf(const std::string &strFileName, double precision)
{
  clear();
  return addDxf(strFileName, precision);
}

/**
 * @brief improve paths in layers
 * @param[in] eqDist maximum distance of tho points to be considered equal
 */
void Drawing::improvePaths(double eqDist)
{
  Layers::iterator layer;
  for (layer = mLayers.begin(); layer != mLayers.end(); ++layer)
    layer->second.improvePaths(eqDist);
}

dxfngc

implement finer approximation for circles and arcs on import, implement import of ellipses