MRToolPath.h

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#pragma once
#include "MRVoxelsFwd.h"
 
#include "MRMesh/MRAxis.h"
#include "MRMesh/MRMesh.h"
#include "MRMesh/MRPolyline.h"
#include "MRMesh/MRProgressCallback.h"
#include "MRMesh/MRExpected.h"
 
namespace MR
{
 
enum class BypassDirection
{
    Clockwise,
    CounterClockwise
};
 
struct ToolPathParams
{
    // radius of the milling tool
    float millRadius = {};
    // size of voxel needed to offset mesh
    float voxelSize = {};
    // distance between sections built along Z axis
    // in Constant Cusp mode sectionStep should be bigger than voxelSize (x1.2 or more is recomended)
    float sectionStep = {};
    // if distance to the next section is smaller than it, transition will be performed along the surface
    // otherwise transition will be through the safe plane
    float critTransitionLength = {};
    // when the mill is moving down, it will be slowed down in this distance from mesh
    float plungeLength = {};
    // when the mill is moving up, it will be slowed down in this distance from mesh
    float retractLength = {};
    // speed of slow movement down
    float plungeFeed = {};
    // speed of slow movement up
    float retractFeed = {};
    // speed of regular milling
    float baseFeed = {};
    // z-coordinate of plane where tool can move in any direction without touching the object
    float safeZ = {};
    // which direction isolines or sections should be passed in
    BypassDirection bypassDir = BypassDirection::Clockwise;
    // mesh can be transformed using xf parameter
    const AffineXf3f* xf = nullptr;
    // if true then a tool path for a flat milling tool will be generated
    bool flatTool = false;
    // callback for reporting on progress
    ProgressCallback cb = {};
    
    // optional output, stores isolines without transits
    Contours3f* isolines = nullptr;  
    // optional output, polyline containing start vertices for isolines
    Contours3f* startContours = nullptr;
    // start vertices on the offset mesh used for calcutating isolines
    std::vector<Vector3f>* startVertices = nullptr;
 
    MeshPart* offsetMesh = nullptr;
};
 
struct ConstantCuspParams : ToolPathParams
{
    // if true isolines will be processed from center point to the boundary (usually it means from up to down)
    bool fromCenterToBoundary = true;
};
 
struct LineInterpolationParams
{
    // maximal deviation from given line
    float eps = {};
    // maximal length of the line
    float maxLength = {};
    // callback for reporting on progress
    ProgressCallback cb = {};
};
 
struct ArcInterpolationParams
{
    // maximal deviation of arc from given path
    float eps = {};
    // maximal radius of the arc
    float maxRadius = {};
    // callback for reporting on progress
    ProgressCallback cb = {};
};
 
enum class MoveType
{
    None = -1,
    FastLinear = 0,
    Linear = 1,
    ArcCW = 2,
    ArcCCW = 3
};
 
enum class ArcPlane
{
    None = -1,
    XY = 17,
    XZ = 18,
    YZ = 19
};
 
struct GCommand
{
    // type of command GX (G0, G1, etc). By default - G1
    MoveType type = MoveType::Linear;
    // Place for comment
    ArcPlane arcPlane = ArcPlane::None;
    // feedrate for move
    float feed = std::numeric_limits<float>::quiet_NaN();
    // coordinates of destination point
    float x = std::numeric_limits<float>::quiet_NaN();
    float y = std::numeric_limits<float>::quiet_NaN();
    float z = std::numeric_limits<float>::quiet_NaN();
    // if moveType is ArcCW or ArcCCW center of the arc shoult be specified
    Vector3f arcCenter = Vector3f::diagonal( std::numeric_limits<float>::quiet_NaN() );
};
 
struct ToolPathResult
{
    // mesh after fixing undercuts and offset
    Mesh modifiedMesh;
    // selected region projected from the original mesh to the offset
    FaceBitSet modifiedRegion;
    // constains type of movement and its feed
    std::vector<GCommand> commands;
};
 
// compute path of the milling tool for the given mesh with parameters ( direction of milling is from up to down along Z-direction )
// this toolpath is built from the parallel sections along Z-axis
// mesh can be transformed using xf parameter
 
MRVOXELS_API Expected<ToolPathResult> constantZToolPath( const MeshPart& mp, const ToolPathParams& params );
 
// compute path of the milling tool for the given mesh with parameters ( direction of milling is from up to down along Z-direction )
// // this one is traditional lace-roughing toolpath
 
// Slices are built along the axis defined by cutDirection argument (can be Axis::X or Axis::Y)
MRVOXELS_API Expected<ToolPathResult> lacingToolPath( const MeshPart& mp, const ToolPathParams& params, Axis cutDirection );
 
// compute path of the milling tool for the given mesh with parameters ( direction of milling is from up to down along Z-direction )
// this toolpath is built from geodesic parallels divercing from the given start point or from the bounaries of selected areas
// if neither is specified, the lowest section by XY plane will be used as a start contour
// mesh can be transformed using xf parameter
MRVOXELS_API Expected<ToolPathResult> constantCuspToolPath( const MeshPart& mp, const ConstantCuspParams& params );
 
// generates G-Code for milling tool
MRVOXELS_API std::shared_ptr<ObjectGcode> exportToolPathToGCode( const std::vector<GCommand>& commands );
 
// interpolates several points lying on the same straight line with one move
MRVOXELS_API Expected<void> interpolateLines( std::vector<GCommand>& commands, const LineInterpolationParams& params, Axis axis );
// interpolates given path with arcs
MRVOXELS_API Expected<void> interpolateArcs( std::vector<GCommand>& commands, const ArcInterpolationParams& params, Axis axis );
 
// makes the given selection more smooth with shifthing a boundary of the selection outside and back. Input mesh is changed because we have to cut new edges along the new boundaries
// \param expandOffset defines how much the boundary is expanded
// \param expandOffset defines how much the boundary is shrinked after that
MRVOXELS_API FaceBitSet smoothSelection( Mesh& mesh, const FaceBitSet& region, float expandOffset, float shrinkOffset );
 
}