C++ (Cpp) ClipperOffset::AddPaths示例

示例#1

文件： ClipperUtils.cpp 项目： jaysuk/Slic3r

void
offset2(const Slic3r::Polygons &polygons, ClipperLib::Paths &retval, const float delta1,
    const float delta2, const double scale, const ClipperLib::JoinType joinType, const double miterLimit)
{
    // read input
    ClipperLib::Paths input;
    Slic3rMultiPoints_to_ClipperPaths(polygons, input);
    
    // scale input
    scaleClipperPolygons(input, scale);
    
    // prepare ClipperOffset object
    ClipperLib::ClipperOffset co;
    if (joinType == jtRound) {
        co.ArcTolerance = miterLimit;
    } else {
        co.MiterLimit = miterLimit;
    }
    
    // perform first offset
    ClipperLib::Paths output1;
    co.AddPaths(input, joinType, ClipperLib::etClosedPolygon);
    co.Execute(output1, (delta1*scale));
    
    // perform second offset
    co.Clear();
    co.AddPaths(output1, joinType, ClipperLib::etClosedPolygon);
    co.Execute(retval, (delta2*scale));
    
    // unscale output
    scaleClipperPolygons(retval, 1/scale);
}

示例#2

文件： ClipperUtils.cpp 项目： jiripech/Slic3r

void
offset2(const Slic3r::Polygons &polygons, ClipperLib::Paths* retval, const float delta1,
    const float delta2, const ClipperLib::JoinType joinType, const double miterLimit)
{
    if (delta1 * delta2 >= 0) {
        // Both deltas are the same signum
        offset(polygons, retval, delta1 + delta2, joinType, miterLimit);
        return;
    }
#ifdef CLIPPER_UTILS_DEBUG
    BoundingBox bbox = get_extents(polygons);
    coordf_t stroke_width = scale_(0.005);
    static int iRun = 0;
    ++ iRun;
    bool flipY = false;
    SVG svg(debug_out_path("offset2-%d.svg", iRun), bbox, scale_(1.), flipY);
    for (Slic3r::Polygons::const_iterator it = polygons.begin(); it != polygons.end(); ++ it)
        svg.draw(it->lines(), "gray", stroke_width);
#endif /* CLIPPER_UTILS_DEBUG */

    // read input
    ClipperLib::Paths input;
    Slic3rMultiPoints_to_ClipperPaths(polygons, &input);
    
    // scale input
    scaleClipperPolygons(input);
    
    // prepare ClipperOffset object
    ClipperLib::ClipperOffset co;
    if (joinType == jtRound) {
        co.ArcTolerance = miterLimit * double(CLIPPER_OFFSET_SCALE);
    } else {
        co.MiterLimit = miterLimit;
    }
    
    // perform first offset
    ClipperLib::Paths output1;
    co.AddPaths(input, joinType, ClipperLib::etClosedPolygon);
    co.Execute(output1, delta1 * float(CLIPPER_OFFSET_SCALE));
#ifdef CLIPPER_UTILS_DEBUG
    svg.draw(output1, 1. / double(CLIPPER_OFFSET_SCALE), "red", stroke_width);
#endif /* CLIPPER_UTILS_DEBUG */
    
    // perform second offset
    co.Clear();
    co.AddPaths(output1, joinType, ClipperLib::etClosedPolygon);
    co.Execute(*retval, delta2 * float(CLIPPER_OFFSET_SCALE));
#ifdef CLIPPER_UTILS_DEBUG
    svg.draw(*retval, 1. / double(CLIPPER_OFFSET_SCALE), "green", stroke_width);
#endif /* CLIPPER_UTILS_DEBUG */

    // unscale output
    unscaleClipperPolygons(*retval);
}

示例#3

文件： ClipperUtils.cpp 项目： jiripech/Slic3r

void
offset(const Slic3r::Polygons &polygons, ClipperLib::Paths* retval, const float delta,
    ClipperLib::JoinType joinType, double miterLimit)
{
    PROFILE_FUNC();
    // read input
    ClipperLib::Paths input;
    Slic3rMultiPoints_to_ClipperPaths(polygons, &input);
    
    // scale input
    scaleClipperPolygons(input);
    
    // perform offset
    ClipperLib::ClipperOffset co;
    if (joinType == jtRound) {
        co.ArcTolerance = miterLimit * double(CLIPPER_OFFSET_SCALE);
    } else {
        co.MiterLimit = miterLimit;
    }
    {
        PROFILE_BLOCK(offset_AddPaths);
        co.AddPaths(input, joinType, ClipperLib::etClosedPolygon);
    }
    {
        PROFILE_BLOCK(offset_Execute);
        co.Execute(*retval, delta * float(CLIPPER_OFFSET_SCALE));
    }
    
    // unscale output
    unscaleClipperPolygons(*retval);
}

示例#4

文件： ClipperUtils.cpp 项目： alpha6/Slic3r

ClipperLib::Paths
_offset(const Polygons &polygons, const float delta,
    double scale, ClipperLib::JoinType joinType, double miterLimit)
{
    // read input
    ClipperLib::Paths input = Slic3rMultiPoints_to_ClipperPaths(polygons);
    
    // scale input
    scaleClipperPolygons(input, scale);
    
    // perform offset
    ClipperLib::ClipperOffset co;
    if (joinType == jtRound) {
        co.ArcTolerance = miterLimit;
    } else {
        co.MiterLimit = miterLimit;
    }
    co.AddPaths(input, joinType, ClipperLib::etClosedPolygon);
    ClipperLib::Paths retval;
    co.Execute(retval, (delta*scale));
    
    // unscale output
    scaleClipperPolygons(retval, 1/scale);
    return retval;
}

示例#5

文件： ClipperUtils.cpp 项目： 151706061/Slic3r

void safety_offset(ClipperLib::Paths* paths)
{
    // scale input
    scaleClipperPolygons(*paths, CLIPPER_OFFSET_SCALE);
    
    // perform offset (delta = scale 1e-05)
    ClipperLib::ClipperOffset co;
    co.MiterLimit = 2;
    co.AddPaths(*paths, ClipperLib::jtMiter, ClipperLib::etClosedPolygon);
    co.Execute(*paths, 10.0 * CLIPPER_OFFSET_SCALE);
    
    // unscale output
    scaleClipperPolygons(*paths, 1.0/CLIPPER_OFFSET_SCALE);
}

示例#6

文件： ClipperUtils.cpp 项目： prusa3d/Slic3r

ClipperLib::Paths
_offset2(const Polygons &polygons, const float delta1, const float delta2,
    const ClipperLib::JoinType joinType, const double miterLimit)
{
    // read input
    ClipperLib::Paths input = Slic3rMultiPoints_to_ClipperPaths(polygons);
    
    // scale input
    scaleClipperPolygons(input);
    
    // prepare ClipperOffset object
    ClipperLib::ClipperOffset co;
    if (joinType == jtRound) {
        co.ArcTolerance = miterLimit;
    } else {
        co.MiterLimit = miterLimit;
    }
    float delta_scaled1 = delta1 * float(CLIPPER_OFFSET_SCALE);
    float delta_scaled2 = delta2 * float(CLIPPER_OFFSET_SCALE);
    co.ShortestEdgeLength = double(std::max(std::abs(delta_scaled1), std::abs(delta_scaled2)) * CLIPPER_OFFSET_SHORTEST_EDGE_FACTOR);
    
    // perform first offset
    ClipperLib::Paths output1;
    co.AddPaths(input, joinType, ClipperLib::etClosedPolygon);
    co.Execute(output1, delta_scaled1);
    
    // perform second offset
    co.Clear();
    co.AddPaths(output1, joinType, ClipperLib::etClosedPolygon);
    ClipperLib::Paths retval;
    co.Execute(retval, delta_scaled2);
    
    // unscale output
    unscaleClipperPolygons(retval);
    return retval;
}

示例#7

文件： ClipperUtils.cpp 项目： jaysuk/Slic3r

void safety_offset(ClipperLib::Paths* &subject)
{
    // scale input
    scaleClipperPolygons(*subject, CLIPPER_OFFSET_SCALE);
    
    // perform offset (delta = scale 1e-05)
    ClipperLib::Paths* retval = new ClipperLib::Paths();
    ClipperLib::ClipperOffset co;
    co.MiterLimit = 2;
    co.AddPaths(*subject, ClipperLib::jtMiter, ClipperLib::etClosedPolygon);
    co.Execute(*retval, 10.0 * CLIPPER_OFFSET_SCALE);
    
    // unscale output
    scaleClipperPolygons(*retval, 1.0/CLIPPER_OFFSET_SCALE);
    
    // delete original data and switch pointer
    delete subject;
    subject = retval;
}

示例#8

文件： ClipperUtils.cpp 项目： prusa3d/Slic3r

ClipperLib::Paths _offset(ClipperLib::Paths &&input, ClipperLib::EndType endType, const float delta, ClipperLib::JoinType joinType, double miterLimit)
{
    // scale input
    scaleClipperPolygons(input);
    
    // perform offset
    ClipperLib::ClipperOffset co;
    if (joinType == jtRound)
        co.ArcTolerance = miterLimit;
    else
        co.MiterLimit = miterLimit;
    float delta_scaled = delta * float(CLIPPER_OFFSET_SCALE);
    co.ShortestEdgeLength = double(std::abs(delta_scaled * CLIPPER_OFFSET_SHORTEST_EDGE_FACTOR));
    co.AddPaths(input, joinType, endType);
    ClipperLib::Paths retval;
    co.Execute(retval, delta_scaled);
    
    // unscale output
    unscaleClipperPolygons(retval);
    return retval;
}

示例#9

文件： ClipperUtils.cpp 项目： jaysuk/Slic3r

void
offset(const Slic3r::Polylines &polylines, ClipperLib::Paths &retval, const float delta,
    double scale, ClipperLib::JoinType joinType, double miterLimit)
{
    // read input
    ClipperLib::Paths input;
    Slic3rMultiPoints_to_ClipperPaths(polylines, input);
    
    // scale input
    scaleClipperPolygons(input, scale);
    
    // perform offset
    ClipperLib::ClipperOffset co;
    if (joinType == jtRound) {
        co.ArcTolerance = miterLimit;
    } else {
        co.MiterLimit = miterLimit;
    }
    co.AddPaths(input, joinType, ClipperLib::etOpenButt);
    co.Execute(retval, (delta*scale));
    
    // unscale output
    scaleClipperPolygons(retval, 1/scale);
}