void MyRendererTFEditor_TFE::initialize( void )
{
// first clear the markers so this function can be called again to reset
m_tfe_markers.markers.clear();
// initialize start and end tf markers
m_tfe_markers.initMarker(
0.00, QColor( 0, 0, 0, 0 ), QColor( 0, 0, 0, 0 ) );
m_tfe_markers.initMarker(
1.00, QColor( 0, 0, 0, 0 ), QColor( 0, 0, 0, 0 ) );
// add default markers
m_tfe_markers.addMarker(
0.30, QColor( 255, 51, 51, 80 ), QColor( 255, 51, 51, 80 ) );
m_tfe_markers.addMarker(
0.50, QColor( 255, 255, 128, 128 ), QColor( 255, 255, 128, 128 ) );
m_tfe_markers.addMarker(
0.95, QColor( 255, 255, 255, 255 ), QColor( 255, 255, 255, 255 ) );
// add iso markers
m_tfe_markers.addMarker(
0.15, QColor( 228, 209, 192, 75 ), QColor( 228, 209, 192, 75 ), true, 0 );
if (NUM_VOLUMES > 1)
m_tfe_markers.addMarker(
0.20, QColor( 228, 209, 192, 75 ), QColor( 228, 209, 192, 75 ), true, 1 );
// initialize utility variables
m_tfe_marker_selected = 0;
m_tfe_marker_side = 0;
updateIsosurface();
updateTF();
update();
}
void TransFuncIntensityGradientPainter::mouseMoveEvent(tgt::MouseEvent* event) {
event->accept();
tgt::ivec2 size = getCanvas()->getSize();
tgt::vec2 pos = tgt::vec2( static_cast<float>(event->x()) / size.x,
1.f-static_cast<float>(event->y()) / size.y);
tgt::vec2 offset = pos - mouseCoord_;
if (selectedPrimitive_) {
if (!dragging_) {
emit toggleInteractionMode(true);
dragging_ = true;
}
// test whether the movement is correct
/*bool inside = */selectedPrimitive_->move(offset);
// one or more control points are moved outside of the canvas
// -> do not allow movement and reset mouse cursor to position before movement
//if (!inside) {
//tgt::QtCanvas* canvas = static_cast<tgt::QtCanvas*>(getCanvas());
//QPoint p(static_cast<int>(mouseCoord_.x * size.x),
//static_cast<int>((1.f - mouseCoord_.y) * size.y));
//p = canvas->mapToGlobal(p);
//QCursor::setPos(p);
//}
//else {
mouseCoord_ = pos;
updateTF();
//}
}
getCanvas()->update();
}
void TransFuncIntensityGradientPainter::resetTransferFunction() {
selectedPrimitive_ = 0;
tf_->clear();
updateTF();
getCanvas()->update();
}
void TransFuncIntensityGradientPainter::fuzzinessChanged(int fuzzi) {
if (selectedPrimitive_)
selectedPrimitive_->setFuzziness(fuzzi/100.f);
updateTF();
getCanvas()->update();
}
void TransFuncIntensityGradientPainter::setTransFunc(TransFuncIntensityGradient* tf) {
selectedPrimitive_ = 0;
tf_ = tf;
if (tf_) {
updateTF();
getCanvas()->update();
}
}
void TransFuncIntensityGradientPainter::deletePrimitive() {
if (selectedPrimitive_) {
tf_->removePrimitive(selectedPrimitive_);
selectedPrimitive_ = 0;
updateTF();
emit primitiveDeselected();
getCanvas()->update();
}
}
void TransFuncIntensityGradientPainter::transparencyChanged(int trans) {
if (selectedPrimitive_) {
tgt::col4 color = selectedPrimitive_->getColor();
color.a = trans;
selectedPrimitive_->setColor(color);
}
updateTF();
getCanvas()->update();
}
void TransFuncIntensityGradientPainter::setHistogramVisible(bool v) {
showHistogram_ = v;
if (showHistogram_ && !histogram_) {
QApplication::setOverrideCursor(Qt::WaitCursor);
createHistogram();
createHistogramTexture();
QApplication::restoreOverrideCursor();
// update texture of transfer function because the scaling factor changed
updateTF();
}
}
void MyRendererTFEditor_TFE::wheelEvent(QWheelEvent *event)
{
float delta = event->delta() * ( m_display_max - m_display_min ) * 0.000005;
for( int i = 1; i < m_tfe_markers.markers.size() - 1; i++ )
if( m_tfe_markers.markers.at( i ).x + delta > 0.0 &&
m_tfe_markers.markers.at( i ).x + delta < 1.0 )
m_tfe_markers.markers.at( i ).x += delta;
update();
updateIsosurface();
updateTF();
}
void MyRendererTFEditor_TFE::readMarkers(QDataStream &stream)
{
// re-initialize utility variables
m_tfe_marker_selected = 0;
m_tfe_marker_side = 0;
// read the marker set from the data stream
stream >> m_tfe_markers;
// update everything and emit changed signals
updateIsosurface();
updateTF();
update();
}
void TransFuncIntensityGradientPainter::addQuadPrimitive() {
// create new primitive
TransFuncPrimitive* p = new TransFuncQuad(tgt::vec2(0.5f), 0.2f, tgt::col4(128), scaleFactor_);
// add primitive to transfer function
tf_->addPrimitive(p);
// update texture of transfer function
updateTF();
// select primitive and update widgets
selectPrimitive(p);
// repaint canvas
getCanvas()->update();
}
/** * @brief Render the mesh given a camera and light, using a Phong shader
* @param mesh Given mesh
* @param camera Given camera
* @param lightTrackball Given light camera
*/
void render (Tucano::Mesh& mesh, const Tucano::Camera& camera, const Tucano::Camera& lightTrackball)
{
if (read_va == NULL)
{
read_va = mesh.getAttribute("positions1");
write_va = mesh.getAttribute("positions2");
}
if (read_va == NULL || write_va == NULL)
qDebug() << "AHHH morri";
updateTF(mesh, camera, lightTrackball);
Eigen::Vector4f viewport = camera.getViewport();
glViewport(viewport[0], viewport[1], viewport[2], viewport[3]);
simple.bind();
// sets all uniform variables for the phong shader
simple.setUniform("projectionMatrix", camera.getProjectionMatrix());
simple.setUniform("modelMatrix", mesh.getModelMatrix());
simple.setUniform("viewMatrix", camera.getViewMatrix());
glEnable(GL_DEPTH_TEST);
//mesh.setAttributeLocation(simple);
mesh.bindBuffers();
// mesh.resetLocations();
//qDebug() << mesh.getAttribute("nPos")->getLocation();
read_va->disable();
write_va->enable(simple.getAttributeLocation("inPos"));
mesh.setAttributeLocation("nColor", simple.getAttributeLocation("inColor"));
mesh.renderPoints();
mesh.unbindBuffers();
simple.unbind();
VertexAttribute *tmp_va;
tmp_va = read_va;
read_va = write_va;
write_va = tmp_va;
}
void ViewSphereRender::animate()
{
if (m_targetPos != NULL)
{
if (m_recorder->hasNext())
{
const ViewPoint* next = m_recorder->next();//nextPointNearest(m_currentPos, m_targetPos);
if (next != NULL)
{
m_camera.lookAt(next->theta, next->phi);
//////////////////////////////////////////////////////////////////////////
updateTF();
//////////////////////////////////////////////////////////////////////////
}
}
else
{
m_timer->stop();
}
notifyUpdate();
}
}
void TransFuncIntensityGradientPainter::colorizePrimitive() {
if (selectedPrimitive_) {
tgt::col4 primitiveColor = selectedPrimitive_->getColor();
// set start color to current color of the primitive
QColor qcolor(primitiveColor.r, primitiveColor.g, primitiveColor.b, primitiveColor.a);
qcolor = QColorDialog::getRgba(qcolor.rgba());
if (qcolor.isValid()) {
primitiveColor.r = qcolor.red();
primitiveColor.g = qcolor.green();
primitiveColor.b = qcolor.blue();
primitiveColor.a = qcolor.alpha();
selectedPrimitive_->setColor(primitiveColor);
// set transparency slider to choosen value
emit setTransparencySlider(qcolor.alpha());
updateTF();
getCanvas()->update();
}
}
}
void MyRendererTFEditor_TFE::mouseMoveEvent( QMouseEvent * event )
{
// if there is a valid node to select
if( m_mouse_button == Qt::LeftButton && m_tfe_markers.markers.size() > 2 )
{
QPoint pos = event->pos();
QSize size = this->size();
float x_rescaled =
rescale( 0.0, 1.0, pos.x() / float(size.width()), m_display_min, m_display_max );
float y_rescaled =
cml::clamp( 1.0 - pos.y() / float(size.height()), 0.0, 1.0 );
// new variable names for code clarity
TFEMarkers * m = & m_tfe_markers;
int sel = m_tfe_marker_selected;
// update marker position
if( m->at( sel )->b_iso || m->at( sel )->color_left == m->at( sel )->color_right )
{
m->at( sel )->color_left.setAlphaF( y_rescaled );
m->at( sel )->color_right.setAlphaF( y_rescaled );
}
else
{
if( m_tfe_marker_side < 0 ) m->at( sel )->color_left.setAlphaF( y_rescaled );
if( m_tfe_marker_side > 0 ) m->at( sel )->color_right.setAlphaF( y_rescaled );
}
m->at( sel )->x = cml::clamp( x_rescaled, 0.0f, 1.0f );
// re-add marker if ranking has changed
if( m->at( sel )->x > m->at( sel + 1 )->x )
{
int count = 1;
for( int i = sel + 2; i < m->markers.size(); i++ )
if( m->at( sel )->x > m->at( i )->x ) count++;
TFEMarker m_temp = * m->at( sel );
m->delMarker( sel );
m->addMarker( m_temp.x, m_temp.color_left, m_temp.color_right, m_temp.b_iso, m_temp.iso_index );
sel += count;
}
if( m->at( sel )->x < m->at( sel - 1 )->x )
{
int count = 1;
for( int i = sel - 2; i > 0; i-- )
if( m->at( sel )->x < m->at( i )->x ) count++;
TFEMarker m_temp = * m->at( sel );
m->delMarker( sel );
m->addMarker( m_temp.x, m_temp.color_left, m_temp.color_right, m_temp.b_iso, m_temp.iso_index );
sel -= count;
}
m_tfe_marker_selected = sel;
if( m->at( sel )->b_iso ) updateIsosurface();
else updateTF();
update();
}
}
void MyRendererTFEditor_TFE::mouseReleaseEvent( QMouseEvent * event )
{
// store position and size of widget
QPoint pos = event->pos();
int w = this->size().width();
int h = this->size().height();
// rescale position coordinates
float x_rescaled =
rescale( 0.0, 1.0, pos.x() / float(w), m_display_min, m_display_max );
float y_rescaled =
1.0 - pos.y() / float(h);
// new variable names for code clarity
TFEMarkers * m = & m_tfe_markers;
int sel = m_tfe_marker_selected;
// define boundary for pulling markers off the tranfer function graph
float outside = 0.25;
// store number of valid colors stored
int valid_colors;
if( m_color_selected[1].rgb() != QColor( 0, 0, 0, 0 ).rgb() ) valid_colors = 2;
else if( m_color_selected[0].rgb() != QColor( 0, 0, 0, 0 ).rgb() ) valid_colors = 1;
else valid_colors = 0;
// if a marker has been dragged off the graph, delete it
if( ( m_mouse_button == Qt::LeftButton && !m->at( sel )->b_iso ) &&
( x_rescaled < 0.0 - outside ||
x_rescaled > 1.0 + outside ||
y_rescaled < 0.0 - outside ||
y_rescaled > 1.0 + outside ) )
m->delMarker( sel );
// if the user right-clicked and there are valid colors
else if( m_mouse_button == Qt::RightButton && valid_colors > 0 &&
( x_rescaled > 0.0 ||
x_rescaled < 1.0 ||
y_rescaled > 0.0 ||
y_rescaled < 1.0 ) )
{
y_rescaled = cml::clamp( y_rescaled, 0.f, 1.f );
m_color_selected[0].setAlphaF( y_rescaled - 0.05 );
if( valid_colors > 1 ) m_color_selected[1].setAlphaF( y_rescaled + 0.05 );
// look-up index of adjacent marker
int adjacent; float low_dist = w;
for( int i = 1; i < m->markers.size() - 1; i++ )
{
// calculate distance to marker
float x_pos_rescaled = rescale( m_display_min, m_display_max, m->at( i )->x, 0.0, 1.0 );
float d_x = ( pos.x() - x_pos_rescaled * w ) ;
float d_y = h - pos.y() - h * m->at( i )->color_left.alphaF();
float dist = sqrt( d_x * d_x + d_y * d_y );
// if a closer marker is found, pick it
if( dist < low_dist )
{
adjacent = i;
low_dist = dist;
}
}
// if user clicked close to a marker, change it's color
if( low_dist < 8 )
{
if( m->at( adjacent )->b_iso )
{
m->at( adjacent )->color_left = m_color_selected[0];
m->at( adjacent )->color_right = m_color_selected[0];
}
else
{
if( valid_colors > 1 )
{
m->at( adjacent )->color_left = m_color_selected[0];
m->at( adjacent )->color_right = m_color_selected[1];
}
else
{
m->at( adjacent )->color_left = m_color_selected[0];
m->at( adjacent )->color_right = m_color_selected[0];
}
}
}
// otherwise, if two colors are selected, add a dual color marker
else if( valid_colors == 2 )
{
m_color_selected[0].setAlphaF( y_rescaled - 0.05 );
m_color_selected[1].setAlphaF( y_rescaled + 0.05 );
m->addMarker( x_rescaled, m_color_selected[0], m_color_selected[1], false );
}
// otherwise, just add a single color marker
else
m->addMarker( x_rescaled, m_color_selected[0], m_color_selected[0], false );
}
m_mouse_button = Qt::NoButton;
m_tfe_marker_selected = 0;
m_tfe_marker_side = 0;
update();
updateIsosurface();
updateTF();
}