/*!
* \brief IntersectLinePlane::isIntersection
* \param line
* \param plane
* \return
*/
bool IntersectLinePlane::isIntersection(const QPointer<Line> &line, const QPointer<Plane> &plane){
//scalar product of the lines's direction vector and the plane's normal vector
double dot = 0.0;
OiVec::dot(dot, line->getDirection().getVector(), plane->getDirection().getVector());
if(dot > 0.0001 || dot < -0.0001){
return true;
}
return false;
}
/*!
* \brief IntersectLinePlane::setUpResult
* \param point
* \return
*/
bool IntersectLinePlane::setUpResult(Point &point){
//get and check line and plane that shall be intersected
if(!this->inputElements.contains(0) || this->inputElements[0].size() != 1
|| !this->inputElements.contains(1) || this->inputElements[1].size() != 1){
return false;
}
QPointer<Line> line = this->inputElements[0].at(0).line;
QPointer<Plane> plane = this->inputElements[1].at(0).plane;
if(line.isNull() || plane.isNull() || !line->getIsSolved() || !plane->getIsSolved()){
return false;
}
//check if line and plane intersect
if(!this->isIntersection(line, plane)){
emit this->sendMessage(QString("No intersection between line %1 and plane %2").arg(line->getFeatureName())
.arg(plane->getFeatureName()), eWarningMessage);
return false;
}
//perform intersection
OiVec l_v = line->getDirection().getVector(); //direction vector for line
OiVec p_n = plane->getDirection().getVector(); //normal vector for plane
OiVec l_x0 = line->getPosition().getVector(); //position vector for line
OiVec p_x0 = plane->getPosition().getVector(); //position vector for plane
p_n.normalize(); //normalize normal vector for plane
double d = 0.0; //distance plane to origin
OiVec::dot(d, p_x0, p_n);
double h1, h2;
OiVec::dot(h1, l_x0, p_n);
OiVec::dot(h2, l_v, p_n);
double lamda = (d - h1) / (h2);
OiVec s = l_x0 + lamda * l_v;
//set result
Position section;
section.setVector(s);
point.setPoint(section);
return true;
}
/*!
* \brief RectifyToVector::setUpResult
* \param plane
* \return
*/
bool RectifyToVector::setUpResult(Plane &plane){
//get and check point
if(!this->inputElements.contains(0) || this->inputElements[0].size() != 1){
return false;
}
QPointer<Geometry> geometry = this->inputElements[0].at(0).geometry;
if(geometry.isNull() || !geometry->getIsSolved() || !geometry->hasDirection()){
return false;
}
//get the sense (positive or negative)
double sense = 1.0;
if(this->scalarInputParams.stringParameter.contains("sense")){
if(this->scalarInputParams.stringParameter.value("sense").compare("negative") == 0){
sense = -1.0;
}
}
//get the direction to compare
OiVec r_reference = geometry->getDirection().getVector();
r_reference.normalize();
OiVec r_plane = plane.getDirection().getVector();
r_plane.normalize();
//calculate the angle between both directions
double angle = 0.0;
OiVec::dot(angle, r_reference, r_plane);
angle = qAbs(qAcos(angle));
//invert the normal vector if the angle is greater than 90°
if(angle > PI/2.0){
r_plane = -1.0 * r_plane;
}
//invert the normal vector if sense is negative
r_plane = sense * r_plane;
//set result
Direction direction = plane.getDirection();
direction.setVector(r_plane);
plane.setPlane(plane.getPosition(), direction);
return true;
}
/*!
* \brief Register::setUpResult
* \param sphere
* \return
*/
bool Register::setUpResult(Sphere &sphere){
//get and check plane
if(!this->inputElements.contains(0) || this->inputElements[0].size() != 1){
return false;
}
QPointer<Plane> plane = this->inputElements[0].at(0).plane;
if(plane.isNull() || !plane->getIsSolved()){
return false;
}
//get the position of the sphere and the plane and the normal vector
OiVec n_plane = plane->getDirection().getVector();
n_plane.normalize();
OiVec x_plane = plane->getPosition().getVector();
OiVec x_sphere = sphere.getPosition().getVector();
//calculate the distance of the plane from the origin
double d;
OiVec::dot(d, x_plane, n_plane);
if(d < 0.0){
n_plane = -1.0 * n_plane;
d = -d;
}
//calculate the distance of the sphere position from the plane
double s;
OiVec::dot(s, x_sphere, n_plane);
s = s - d;
//project the sphere position into the plane
x_sphere = x_sphere - s * n_plane;
//set result
Position position = sphere.getPosition();
position.setVector(x_sphere);
Radius radius = sphere.getRadius();
sphere.setSphere(position, radius);
return true;
}