Method processRotation_

source/MRViewer/MRObjectTransformWidget.cpp:402–435

}

void ObjectTransformWidget::processRotation_( Axis ax, bool press )
{
    const auto& mousePos = getViewerInstance().mouseController().getMousePos();
    auto& viewport = getViewerInstance().viewport();
    auto viewportPoint = getViewerInstance().screenToViewport( Vector3f( float( mousePos.x ), float( mousePos.y ), 0.f ), viewport.id );
    auto line = viewport.unprojectPixelRay( Vector2f( viewportPoint.x, viewportPoint.y ) );

    auto xf = controlsRoot_->xf( viewport.id );
    const auto& wCenter = controls_->getCenter();
    auto wRadius = controls_->getRadius();
    auto zeroPoint = xf( wCenter + baseAxis[( int( ax ) + 1 ) % 3] * wRadius );
    auto norm = xf.A * ( baseAxis[int( ax )] );
    auto centerTransformed = xf( wCenter );
    auto angle = findAngleDegOfPick( centerTransformed, zeroPoint, norm, line, viewport, viewportPoint );

    if ( press )
    {
        accumAngle_ = 0.0f;
        startAngle_ = angle;
    }

    auto addXf = AffineXf3f::xfAround( Matrix3f::rotation( xf.A * baseAxis[int( ax )], angle - startAngle_ ), centerTransformed );

    addXf_( addXf );
    accumAngle_ += ( angle - startAngle_ );

    if ( accumAngle_ > PI_F )
        accumAngle_ = accumAngle_ - 2.0f * PI_F;
    else if ( accumAngle_ < -PI_F )
        accumAngle_ = 2.0f * PI_F + accumAngle_;

    if ( controls_ )
        controls_->updateRotation( ax, controlsRoot_->xf( viewport.id ), startAngle_, startAngle_ + accumAngle_, viewport.id );
}

void ObjectTransformWidget::setControlsXf_( const AffineXf3f& xf, bool updateScaled, ViewportId id )
{