AF2PlaneProjection.hpp

Go to the documentation of this file.

/*
 * AF2PlaneProjection.hpp
 *
 * A transformation between 2-dimensional space and 3-dimensional space
 * that transforms from three dimensions to two dimensions by subtracting
 * some origin point from the 3-dimensional point and removing the
 * component that is in the direction normal to the plane.  In other words,
 * the transformation projects the 3-dimensional point onto a plane.
 * After the projection, the point is scaled in the plane.
 * 
 * The inverse works by first reversing the scaling, and then firing a
 * ray from the plane in the direction normal to the plane and finding
 * the intersection of the ray with the surface.
 */

#ifndef AF2PLANEPROJECTION_HPP
#define AF2PLANEPROJECTION_HPP

// MeshKit
#include "meshkit/iGeom.hpp"
#include "meshkit/AF2LocalTransform.hpp"
#include "meshkit/Matrix.hpp"

class AF2PlaneProjection : public AF2LocalTransform
{
  private:

    iGeom* iGeomPtr;
    iGeom::EntityHandle surface;
    MeshKit::Vector<3> pOrigin;
    MeshKit::Vector<3> pNormal;
    MeshKit::Vector<3> pXDir;
    MeshKit::Vector<3> pYDir;
    double scale;

  public:

    AF2PlaneProjection(iGeom* iGeomPtrArg,
        iGeom::EntityHandle srfcHandle,
        MeshKit::Vector<3> const & planeOrigin,
        MeshKit::Vector<3> const & planeNormal,
        MeshKit::Vector<3> const & planeXDir,
        double scaleFactor);

    AF2Point2D* transformFromSurface(AF2Point3D const & srfcPnt, bool & legal) const;

    AF2Point3D* transformToSurface(AF2Point2D const & planePnt,
        unsigned long const & pntId) const;
};

#endif