void MeshPicking::process() {
utilgl::activateAndClearTarget(outport_, ImageType::ColorDepthPicking);
MeshDrawerGL drawer(meshInport_.getData().get());
shader_.activate();
shader_.setUniform("pickingColor_", picking_.getPickingObject()->getPickingColor());
const auto& ct = meshInport_.getData()->getCoordinateTransformer(camera_.get());
mat4 dataToClip =
ct.getWorldToClipMatrix() * glm::translate(position_.get()) * ct.getDataToWorldMatrix();
shader_.setUniform("dataToClip", dataToClip);
{
utilgl::GlBoolState depthTest(GL_DEPTH_TEST, true);
utilgl::CullFaceState culling(cullFace_.get());
utilgl::DepthFuncState depthfunc(GL_ALWAYS);
drawer.draw();
}
shader_.deactivate();
utilgl::deactivateCurrentTarget();
compositePortsToOutport(outport_, ImageType::ColorDepthPicking, imageInport_);
}
void EntryExitPoints::process() {
// Check if no renderer exist or if geometry changed
if (inport_.isChanged() && inport_.hasData()) {
drawer_ = MeshDrawerFactory::getPtr()->create(inport_.getData().get());
}
if (!drawer_) return;
utilgl::DepthFuncState depthfunc(GL_ALWAYS);
utilgl::PointSizeState pointsize(1.0f);
shader_.activate();
auto geom = inport_.getData();
mat4 modelMatrix = geom->getCoordinateTransformer(camera_.get()).getDataToClipMatrix();
shader_.setUniform("dataToClip", modelMatrix);
{
// generate exit points
utilgl::activateAndClearTarget(exitPort_, ImageType::ColorDepth);
utilgl::CullFaceState cull(GL_FRONT);
drawer_->draw();
utilgl::deactivateCurrentTarget();
}
{
// generate entry points
if (capNearClipping_) {
if (!tmpEntry_ ||
tmpEntry_->getDimensions() != entryPort_.getDimensions() ||
tmpEntry_->getDataFormat() != entryPort_.getData()->getDataFormat()) {
tmpEntry_.reset(
new Image(entryPort_.getDimensions(), entryPort_.getData()->getDataFormat()));
}
utilgl::activateAndClearTarget(*tmpEntry_);
} else {
utilgl::activateAndClearTarget(entryPort_, ImageType::ColorDepth);
}
utilgl::CullFaceState cull(GL_BACK);
drawer_->draw();
shader_.deactivate();
utilgl::deactivateCurrentTarget();
}
if (capNearClipping_ && tmpEntry_) {
// render an image plane aligned quad to cap the proxy geometry
utilgl::activateAndClearTarget(entryPort_, ImageType::ColorDepth);
clipping_.activate();
TextureUnitContainer units;
utilgl::bindAndSetUniforms(clipping_, units, *tmpEntry_, "entry", ImageType::ColorDepth);
utilgl::bindAndSetUniforms(clipping_, units, exitPort_, ImageType::ColorDepth);
// the rendered plane is specified in camera coordinates
// thus we must transform from camera to world to texture coordinates
mat4 clipToTexMat = geom->getCoordinateTransformer(camera_.get()).getClipToDataMatrix();
clipping_.setUniform("NDCToTextureMat", clipToTexMat);
clipping_.setUniform("nearDist", camera_.getNearPlaneDist());
utilgl::singleDrawImagePlaneRect();
clipping_.deactivate();
utilgl::deactivateCurrentTarget();
}
}
