void CameraController::focusOnBounds(const Imath::Box3f& bounds)
{
using namespace Imath;
V3f fwd = m_parameters->forwardUnitVector();
V3f center = bounds.center();
float distance = bounds.size().length() / (2.0f * tan(m_parameters->fovY() / 2));
m_parameters->setEyeTarget(center - fwd * distance, center);
}
Imath::Box3f SceneView::framingBound() const
{
Imath::Box3f b = m_renderableGadget->selectionBound();
if( !b.isEmpty() )
{
return b;
}
return View3D::framingBound();
}
Imath::Box3f MotionPrimitive::bound() const
{
Imath::Box3f result;
for( SnapshotMap::const_iterator it=m_snapshots.begin(); it!=m_snapshots.end(); it++ )
{
result.extendBy( it->second->bound() );
}
return result;
}
Imath::Box3f Frame::bound() const
{
Imath::Box3f b = IndividualContainer::bound();
if( b.isEmpty() )
{
return b;
}
b.max += V3f( m_border, m_border, 0 );
b.min -= V3f( m_border, m_border, 0 );
return b;
}
bool rayPassesNearOrThrough(const V3d& rayOrigin, const V3d& rayDir) const
{
const double diagRadius = 1.2*bbox.size().length()/2; // Sphere diameter is length of box diagonal
const V3d o2c = bbox.center() - rayOrigin; // vector from rayOrigin to box center
const double l = o2c.length();
if(l < diagRadius)
return true; // rayOrigin lies within bounding sphere
// rayOrigin lies outside of bounding sphere
const double cosA = o2c.dot(rayDir)/l; // cosine of angle between rayDir and vector from origin to center
if(cosA < DBL_MIN)
return false; // rayDir points to side or behind with respect to direction from origin to center of box
const double sinA = sqrt(1 - cosA*cosA); // sine of angle between rayDir and vector from origin to center
return sinA/cosA < diagRadius/l;
}
bool View::keyPress( GadgetPtr gadget, const KeyEvent &keyEvent )
{
if( keyEvent.key == "F" )
{
Imath::Box3f b = framingBound();
if( !b.isEmpty() && viewportGadget()->getCameraEditable() )
{
viewportGadget()->frame( b );
return true;
}
}
return false;
}
Imath::Box3f SceneView::framingBound() const
{
Imath::Box3f b = m_sceneGadget->selectionBound();
if( !b.isEmpty() )
{
return b;
}
b = View3D::framingBound();
if( m_grid->gadget()->getVisible() )
{
b.extendBy( m_grid->gadget()->bound() );
}
return b;
}
MBoundingBox convert( const Imath::Box3f &from )
{
if( from.isEmpty() )
{
return MBoundingBox();
}
return MBoundingBox( convert<MPoint>( from.min ), convert<MPoint>( from.max ) );
}
Imath::Box3f SkeletonPrimitive::bound() const
{
Imath::Box3f bbox;
for (unsigned int i=0; i<m_globalMatrices->readable().size(); i++)
{
bbox.extendBy( m_globalMatrices->readable()[i].translation() );
}
//std::cerr << bbox.min << ", " << bbox.max << std::endl;
// add a little on for joint radius
bbox.extendBy( bbox.max + Imath::V3f(1,1,1) );
bbox.extendBy( bbox.min - Imath::V3f(1,1,1) );
//std::cerr << bbox.min << ", " << bbox.max << std::endl;
return bbox;
}
void AuxiliaryNodeGadget::doRenderLayer( Layer layer, const Style *style ) const
{
if( layer != GraphLayer::Nodes )
{
return NodeGadget::doRenderLayer( layer, style );
}
Style::State state = getHighlighted() ? Style::HighlightedState : Style::NormalState;
style->renderNodeFrame( Box2f( V2f( 0 ), V2f( 0 ) ), m_radius, state, m_userColor.get_ptr() );
Imath::Box3f bound = style->textBound( Style::LabelText, m_label );
Imath::V3f offset = bound.size() / 2.0;
glPushMatrix();
glTranslatef( -offset.x, -offset.y, 0.0f );
style->renderText( Style::LabelText, m_label );
glPopMatrix();
}
Imath::M44f computeMeshTransform(const Imath::Box3f& bounds, const Imath::V3i& voxelResolution)
{
using namespace Imath;
M44f meshTransform;
// set mesh transform so that the mesh fits within the unit cube. This will
// be changed later when we let the user manipulate the mesh transform and
// the mesh/volume intersection.
V3f voxelMargin = V3f(1.0f) / voxelResolution; // 1 voxel
int majorAxis = bounds.majorAxis();
float s = (1.0f - 2.0 * voxelMargin[majorAxis] ) / bounds.size()[majorAxis];
V3f t = -bounds.min + voxelMargin / s;
meshTransform.x[0][0] = s ; meshTransform.x[0][1] = 0 ; meshTransform.x[0][2] = 0 ; meshTransform.x[0][3] = t.x * s ;
meshTransform.x[1][0] = 0 ; meshTransform.x[1][1] = s ; meshTransform.x[1][2] = 0 ; meshTransform.x[1][3] = t.y * s ;
meshTransform.x[2][0] = 0 ; meshTransform.x[2][1] = 0 ; meshTransform.x[2][2] = s ; meshTransform.x[2][3] = t.z * s ;
meshTransform.x[3][0] = 0 ; meshTransform.x[3][1] = 0 ; meshTransform.x[3][2] = 0 ; meshTransform.x[3][3] = 1.0f ;
return meshTransform;
}
void CameraController::frame( const Imath::Box3f &box, const Imath::V3f &viewDirection, const Imath::V3f &upVector )
{
// make a matrix to centre the camera on the box, with the appropriate view direction
M44f cameraMatrix = rotationMatrixWithUpDir( V3f( 0, 0, -1 ), viewDirection, upVector );
M44f translationMatrix;
translationMatrix.translate( box.center() );
cameraMatrix *= translationMatrix;
// translate the camera back until the box is completely visible
M44f inverseCameraMatrix = cameraMatrix.inverse();
Box3f cBox = transform( box, inverseCameraMatrix );
Box2f screenWindow = m_data->screenWindow->readable();
if( m_data->projection->readable()=="perspective" )
{
// perspective. leave the field of view and screen window as is and translate
// back till the box is wholly visible. this currently assumes the screen window
// is centred about the camera axis.
float z0 = cBox.size().x / screenWindow.size().x;
float z1 = cBox.size().y / screenWindow.size().y;
m_data->centreOfInterest = std::max( z0, z1 ) / tan( M_PI * m_data->fov->readable() / 360.0 ) + cBox.max.z +
m_data->clippingPlanes->readable()[0];
cameraMatrix.translate( V3f( 0.0f, 0.0f, m_data->centreOfInterest ) );
}
else
{
// orthographic. translate to front of box and set screen window
// to frame the box, maintaining the aspect ratio of the screen window.
m_data->centreOfInterest = cBox.max.z + m_data->clippingPlanes->readable()[0] + 0.1; // 0.1 is a fudge factor
cameraMatrix.translate( V3f( 0.0f, 0.0f, m_data->centreOfInterest ) );
float xScale = cBox.size().x / screenWindow.size().x;
float yScale = cBox.size().y / screenWindow.size().y;
float scale = std::max( xScale, yScale );
V2f newSize = screenWindow.size() * scale;
screenWindow.min.x = cBox.center().x - newSize.x / 2.0f;
screenWindow.min.y = cBox.center().y - newSize.y / 2.0f;
screenWindow.max.x = cBox.center().x + newSize.x / 2.0f;
screenWindow.max.y = cBox.center().y + newSize.y / 2.0f;
}
m_data->transform->matrix = cameraMatrix;
m_data->screenWindow->writable() = screenWindow;
}
void DotNodeGadget::updateLabel()
{
const Dot *dot = dotNode();
const Dot::LabelType labelType = (Dot::LabelType)dot->labelTypePlug()->getValue();
if( labelType == Dot::None )
{
m_label.clear();
}
else if( labelType == Dot::NodeName )
{
m_label = dot->getName();
}
else if( labelType == Dot::UpstreamNodeName )
{
const Node *n = upstreamNode();
m_label = n ? n->getName() : "";
}
else
{
m_label = dot->labelPlug()->getValue();
}
Edge labelEdge = RightEdge;
if( const Plug *p = dot->inPlug<Plug>() )
{
if( noduleTangent( nodule( p ) ).x != 0 )
{
labelEdge = TopEdge;
}
}
const Imath::Box3f thisBound = bound();
if( labelEdge == TopEdge )
{
const Imath::Box3f labelBound = style()->textBound( Style::LabelText, m_label );
m_labelPosition = V2f(
-labelBound.size().x / 2.0,
thisBound.max.y + 1.0
);
}
else
{
const Imath::Box3f characterBound = style()->characterBound( Style::LabelText );
m_labelPosition = V2f(
thisBound.max.x,
thisBound.center().y - characterBound.size().y / 2.0
);
}
requestRender();
}
