C++ radius函数代码示例

void UBGraphicsProtractor::paintAngleMarker(QPainter *painter)
{
    painter->save();
    painter->translate(rect().center());
    painter->rotate(-mStartAngle);
    painter->translate(-rect().center().x(), -rect().center().y());
    qreal co = cos(mCurrentAngle * PI/180);
    qreal si = sin(mCurrentAngle * PI/180);
    qreal rad = radius();

    painter->drawLine(QLineF(rect().center(), QPointF(rect().center().x()+ (rad+ 20)*co, rect().center().y() - (rad + 20)*si)));
    QPointF center = rect().center();
    painter->drawArc(QRectF(center.x() - rad/8, center.y() - rad/8, rad / 4, rad / 4), 0
                     , (mCurrentAngle - (int)(mCurrentAngle/360)*360)*16);
    painter->translate(rect().center());
    painter->rotate(-mCurrentAngle);
    painter->translate(-rect().center().x(), -rect().center().y());

    //Paint Angle text (horizontally)

    //restore transformations
    painter->translate(rect().center());
    painter->rotate(mCurrentAngle);
    painter->rotate(mStartAngle);
    painter->translate(-rect().center().x(), -rect().center().y());

    qreal angle = mCurrentAngle - (int)(mCurrentAngle/360)*360;

    if (angle != 0)
    {
        QString ang = QString("%1°").arg(angle,0, 'f', 1);
        QFont font2 = painter->font();
        font2.setBold(true);
        QFontMetricsF fm2(font2);
        painter->setFont(font2);
        if (angle < 50)
            angle = 90;
        else
            angle = angle / 2;

        co = cos((mStartAngle + angle) * PI/180);
        si = sin((mStartAngle + angle) * PI/180);
        painter->drawText(QRectF(rect().center().x() + (rad*2.5/10)*co  - fm2.width(ang)/2,
                                 rect().center().y() - (rad*2.5/10)*si - fm2.height()/2,
                                 fm2.width(ang), fm2.height()), Qt::AlignTop, ang);
    }

    painter->restore();
}

void LCVCircle::draw(LcPainter* painter, LcDrawOptions* options, const lc::geo::Area& rect) const {
    bool modified = false;

    if (this->selected()) {
        modified = true;
        painter->save();
        painter->source_rgba(
            options->selectedColor().red(),
            options->selectedColor().green(),
            options->selectedColor().blue(),
            options->selectedColor().alpha()
        );
    }


    if (radius() /** painter->scale() > 5 */) {
        painter->circle(center().x(), center().y(), radius());
        painter->stroke();
    }

    if (modified) {
        painter->restore();
    }
}

bool ice_ring_test(di::w_spot const& spot,di::SpotFilterAgent* agent){
  double r = radius(spot,agent);
  for(
   af::shared<Distl::icering>::const_iterator ice_ring =
     agent->icerings.begin();
   ice_ring != agent->icerings.end();
   ++ice_ring) {
     if (
      r > agent->pixel_size*(std::sqrt(ice_ring->lowerr2)) - 0.4 &&
      r < agent->pixel_size*(std::sqrt(ice_ring->upperr2)) + 0.4
     ) {return false;}
  }
  // add a 0.4mm annulus above & below ring to allow for inaccurate center
  return true;
}

uint8_t ADMVideoMaskedSoften::configure( AVDMGenericVideoStream *instream)
{
        _in=instream;
        /*uint32_t luma,chroma;
	uint32_t radius;
	*/
        
        diaElemUInteger luma(&(_param->luma),QT_TR_NOOP("_Luma threshold:"),0,255);
        diaElemUInteger chroma(&(_param->chroma),QT_TR_NOOP("C_hroma threshold:"),0,255);
        diaElemUInteger radius(&(_param->radius),QT_TR_NOOP("_Radius:"),1,60);
	  
    diaElem *elems[3]={&luma,&chroma,&radius};
  
    return diaFactoryRun(QT_TR_NOOP("Soften"),3,elems);
}

void Circle::draw(Window const& wndw, Color const& clr) 
{
    const float pi = std::acos(-1);
    float r=radius();
    wndw.draw_point(center().x,center().y,clr.r_,clr.g_,clr.b_); //Center+RGB
    
    
    for (int i=1; i<361; i++)
    {
        Vec2 start=((make_rotation_mat2(2*pi*i/360))*Vec2(r,0)+center());
        Vec2 end=((make_rotation_mat2(2*pi*(i+1)/360))*Vec2(r,0)+center());
        wndw.draw_line(start.x,start.y,end.x,end.y,clr.r_,clr.g_,clr.b_);
    }
          
}

QRect KisVisualEllipticalSelectorShape::getSpaceForTriangle(QRect geom)
{
    int sizeValue = qMin(width(),height());
    QRect b(geom.left(), geom.top(), sizeValue, sizeValue);
    QLineF radius(b.center(), QPointF(b.left()+m_barWidth, b.center().y()) );
    radius.setAngle(90);//point at yellowgreen :)
    QPointF t = radius.p2();
    radius.setAngle(330);//point to purple :)
    QPointF br = radius.p2();
    radius.setAngle(210);//point to cerulean :)
    QPointF bl = radius.p2();
    QPointF tl = QPoint(bl.x(),t.y());
    QRect r(tl.toPoint(), br.toPoint());
    return r;
}

void ReactiveRectangleElement::paint(juce::Graphics &g)
{
    g.saveState();
    
    if (clip)
    {
        g.reduceClipRegion(clipPath);
    }
    if(width() > 0 && height() > 0)
    {
        
        if (fill)
        {
            g.setColour(fillColour());
            g.fillRoundedRectangle(fx, fy, fw, fh, radius());
        }
        g.setColour(borderColour());
        g.drawRoundedRectangle(fx, fy, fw, fh, radius(), borderWidth());
        
    }
    GraphicsElement::paint(g);
    
    g.restoreState();
}

int JuliaFractal::calcAtPoint(const double x0, const double y0) const
{
	long double vectorLength = 0;
	auto x = x0;
	auto y = y0;
	int iteration;
	for (iteration = 0;(iteration < maxIterationCount())&(vectorLength < radius()); iteration++ ) {
		auto currentX = (x+y)*(x-y) + cPmin;
		auto currentY = x*y + x*y + cQmin;
		vectorLength = currentX*currentX + currentY*currentY;
		x = currentX;
		y = currentY;
	}
	return iteration;
}

void CResource::paint() {
    float x = center().x();
    float y = center().y();
	float z = center().z();
    float r = radius();

    switch(m_type){
        case CResource::RES_TYPE_FOOD: glColor3f(0.0, 1.0, 0.0); break;
        case CResource::RES_TYPE_WATER: glColor3f(0.0, 0.0, 1.0); break;
        default: break;
    }
	glTranslatef(x, y, z);
	glutSolidCube(r);
	glTranslatef(-x, -y, -z);
}

void setup_airspaces(Airspaces& airspaces, const GeoPoint& center, const unsigned n) {
    std::ofstream *fin = NULL;

    if (verbose) {
        Directory::Create(Path(_T("output/results")));
        fin = new std::ofstream("output/results/res-bb-in.txt");
    }

    for (unsigned i=0; i<n; i++) {
        AbstractAirspace* as;
        if (rand()%4!=0) {
            GeoPoint c;
            c.longitude = Angle::Degrees(fixed((rand()%1200-600)/1000.0))+center.longitude;
            c.latitude = Angle::Degrees(fixed((rand()%1200-600)/1000.0))+center.latitude;
            fixed radius(10000.0*(0.2+(rand()%12)/12.0));
            as = new AirspaceCircle(c,radius);
        } else {

            // just for testing, create a random polygon from a convex hull around
            // random points
            const unsigned num = rand()%10+5;
            GeoPoint c;
            c.longitude = Angle::Degrees(fixed((rand()%1200-600)/1000.0))+center.longitude;
            c.latitude = Angle::Degrees(fixed((rand()%1200-600)/1000.0))+center.latitude;

            std::vector<GeoPoint> pts;
            for (unsigned j=0; j<num; j++) {
                GeoPoint p=c;
                p.longitude += Angle::Degrees(fixed((rand()%200)/1000.0));
                p.latitude += Angle::Degrees(fixed((rand()%200)/1000.0));
                pts.push_back(p);
            }
            as = new AirspacePolygon(pts,true);
        }
        airspace_random_properties(*as);
        airspaces.Add(as);
        if (fin)
            *fin << *as;
    }

    delete fin;

    // try inserting nothing
    airspaces.Add(NULL);

    airspaces.Optimise();

}

std::vector<Cell> MxField::cells() const
{
    std::vector<Cell> result;
    for (uint32_t x = 0; x < m_sides.x; ++x) {
        for (uint32_t y = 0; y < m_sides.y; ++y) {
            for (uint32_t z = 0; z < m_sides.z; ++z) {
                if (m_field[x][y][z] != 0) {
                    result.push_back(Cell(//new FCube(side()),
                                          new FSphere(radius()),
                                          dCoord(x * side(), y * side(), z * side())));
                }
            }
        }
    }
    return result;
}

void Foam::toroidalCS::writeDict(Ostream& os, bool subDict) const
{
    if (subDict)
    {
        os  << indent << nl
            << indent << token::BEGIN_BLOCK << incrIndent << nl;
    }

    coordinateSystem::writeDict(os, false);
    os.writeKeyword("radius") << radius() << token::END_STATEMENT << nl;

    if (subDict)
    {
        os << decrIndent << indent << token::END_BLOCK << endl;
    }
}

af::shared<int>
di::SpotFilterAgent::resolution_sort(spot_list_t masterlist,
                                     af::shared<int> parentselection){
  //First update the w_spot array with calculated resolutions.
  for (spot_list_t::iterator spotptr = masterlist.begin();
       spotptr != masterlist.end(); ++spotptr) {
       double spotradius = radius(*spotptr,this);
       double theta = std::atan2(spotradius,distance)/2.0;
       spotptr->resolution = wavelength/(2.0 * std::sin(theta));
  }
  cmp mycmp(masterlist);
  //sort according to resolution
  af::shared<int> to_be_sorted = parentselection.deep_copy();
  std::sort<PtrTyp,cmp>(to_be_sorted.begin(),to_be_sorted.end(),mycmp);
  return to_be_sorted;
}

std::shared_ptr<CAbstractShape> CShapeFactory::CreateEllipse(std::istream & descr)
{
	
	Vec2 center(-1.0, -1.0);
	Vec2 radius(-1.0, -1.0);
	std::string color;
	descr >> color;
	descr >> center.x >> center.y >> radius.x >> radius.y;
	if (center.x < 0 || center.y < 0 || radius.x < 0 || radius.y < 0)
	{
		throw std::invalid_argument("Unclear data");
	}
	auto shape = std::make_shared<CEllipse>(center, radius);
	shape->SetColor(GetColor(color));
	return shape;
}

void blur_channels_node_t::get_expand_radius( int& hradius, int& vradius) const
{
    Imath::V2f r_radius = get_value<Imath::V2f>( param( "r_radius"));
    Imath::V2f g_radius = get_value<Imath::V2f>( param( "g_radius"));
    Imath::V2f b_radius = get_value<Imath::V2f>( param( "b_radius"));
    Imath::V2f a_radius = get_value<Imath::V2f>( param( "a_radius"));

	r_radius = adjust_blur_size( r_radius, 1);
	g_radius = adjust_blur_size( g_radius, 1);
	b_radius = adjust_blur_size( b_radius, 1);
	a_radius = adjust_blur_size( a_radius, 1);
    Imath::V2i radius( round_blur_size( Imath::V2f( std::max( r_radius.x, std::max( g_radius.x, std::max( b_radius.x, a_radius.x))),
							                        std::max( r_radius.y, std::max( g_radius.y, std::max( b_radius.y, a_radius.y))))));

    hradius = radius.x;
    vradius = radius.y;
}