cylinderWall.cpp

Go to the documentation of this file.

#include "cylinderWall.hpp"
#include "Vectors.hpp"
#include "line.hpp"
 
 
bool pFlow::cylinderWall::readCylinderWall(const dictionary& dict)
{
    auto p1 = dict.getVal<realx3>("p1");
    auto p2 = dict.getVal<realx3>("p2");
    auto radius1 = dict.getVal<real>("radius1");
    auto radius2 = dict.getVal<real>("radius2") ;
 
    int32 resolution = dict.getValOrSet("resolution", 24 );
    int32 zResolution = dict.getValOrSet("zResolution", 1);
 
    
    triangles_.clear();
    triangles_.reserve(2*resolution*zResolution);
 
 
    line cylAxis(p1, p2);
    auto lp1 = p1;
 
    auto dt = static_cast<real>(1.0/zResolution);
    real t = 0;
    for(int32 i=0; i<zResolution; i++)
    {
        t += dt;
        auto lp2 = cylAxis.point(t);
        if(!createCylinder(lp1, lp2, radius1, radius2, resolution))
            return false;
 
        lp1 = lp2;
    }
 
    return true;
}
 
bool pFlow::cylinderWall::createCylinder(
    const realx3& p1,
    const realx3& p2,
    real rad1,
    real rad2,
    int32 numDiv)
{
 
    zAxis zAx(p1, p2);
    
    real L = zAx.length();
 
    
    realx3Vector r1P(numDiv + 1), r2P(numDiv + 1);
    real dTheta = 2 * Pi / numDiv;
    real theta = 0;
 
    for (int32 i = 0; i < numDiv + 1; i++)
    {
        r1P[i] = realx3(rad1*cos(theta), rad1*sin(theta), 0);
        r2P[i] = realx3(rad2*cos(theta), rad2*sin(theta), L);
        theta += dTheta;
    }
    
    // transferring back all points to the original axis of cylinder
    for (int32 i = 0; i < numDiv + 1; i++)
    {
        r1P[i] = zAx.transferBackZ(r1P[i]);
        r2P[i] = zAx.transferBackZ(r2P[i]);
    }
    
    realx3 norm;
    for (int32 i = 0; i < numDiv; i++)
    {
        realx3 p1 = r1P[i];
        realx3 p2 = r2P[i];
        realx3 p3 = r2P[i + 1];
        realx3 p4 = r1P[i + 1];
 
        if(checkNormalVec(p1, p2, p3, norm))
        {
            triangles_.push_back(realx3x3(p1, p2, p3));
        }
        else
        {
            fatalErrorInFunction<<
            "planner input triangle: "<<realx3x3(p1, p2, p3)<<endl;
            return false;
        }
        
        if (checkNormalVec(p3, p4, p1, norm))
        {
            triangles_.push_back(realx3x3(p3, p4, p1));
        }
        else
        {
            fatalErrorInFunction<<
            "planner input triangle: "<<realx3x3(p3, p4, p1)<<endl;
            return false;
        }
 
    }
 
    return true;
}
 
 
pFlow::cylinderWall::cylinderWall()
{}
 
 
pFlow::cylinderWall::cylinderWall(
    const dictionary& dict
)
:
    Wall(dict)
{
    if( !readCylinderWall(dict) )
    {
        fatalExit;
    }
}