poncateam · nmellado · Dec 3, 2025 · Nov 21, 2025 · Nov 21, 2025 · Nov 26, 2025
diff --git a/.github/workflows/cmake.yml b/.github/workflows/cmake.yml
@@ -20,7 +20,7 @@ jobs:
 
     steps:
     - name: Install nanogui dependencies (ubuntu)
-      run: sudo apt-get update && sudo apt-get install cmake xorg-dev libglu1-mesa-dev
+      run: sudo apt-get update && sudo apt-get install cmake xorg-dev libglu1-mesa-dev libwayland-dev libdbus-1-dev libxkbcommon-dev
       if: matrix.os == 'ubuntu-latest'
 
     - uses: actions/checkout@v3

diff --git a/.gitmodules b/.gitmodules
@@ -1,6 +1,3 @@
-[submodule "external/nanogui"]
-	path = external/nanogui
-	url = https://github.com/mitsuba-renderer/nanogui.git
 [submodule "external/ponca"]
 	path = external/ponca
 	url = https://github.com/poncateam/ponca.git
@@ -10,3 +7,6 @@
 [submodule "external/stb"]
 	path = external/stb
 	url = https://github.com/nothings/stb.git
+[submodule "external/nanogui"]
+	path = external/nanogui
+	url = https://github.com/mitsuba-renderer/nanogui
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.5.0)
+cmake_minimum_required(VERSION 3.10.0)
 
 project("PoncaPlot")
 

diff --git a/external/nanogui b/external/nanogui
diff --git a/external/ponca b/external/ponca
diff --git a/external/stb b/external/stb
diff --git a/src/application.cpp b/src/application.cpp
@@ -57,20 +57,26 @@ namespace poncaplot {
                                             Alignment::Middle, 0, 6));
             auto *b = new Button(tools, "Open point cloud");
             b->set_callback([&] {
-                auto path = file_dialog(
+                auto path = file_dialog( this, nanogui::FileDialogType::Open,
                         {{"dat", "Text file x y nx y"},
-                         {"txt", "Text file x y nx y"}}, false);
-                std::cout << "Load file from: " << path << std::endl;
-                m_dataMgr->loadPointCloud(path);
+                         {"txt", "Text file x y nx y"}});
+                if (path.empty() || path[0].empty()) {
+                    std::cerr << "Open point cloud error : Received an empty file name" << std::endl; return;
+                }
+                std::cout << "Load file from: " << path[0] << std::endl;
+                m_dataMgr->loadPointCloud(path[0]);
                 pointIdSelector->set_max_value(m_dataMgr->getPointContainer().size() - 1);
             });
             b = new Button(tools, "Save point cloud");
             b->set_callback([&] {
-                auto path = file_dialog(
+                auto path = file_dialog( this, nanogui::FileDialogType::Save,
                         {{"dat", "Text file x y nx y"},
-                         {"txt", "Text file x y nx y"}}, true);
-                std::cout << "Save file to: " << path << std::endl;
-                m_dataMgr->savePointCloud(path);
+                         {"txt", "Text file x y nx y"}});
+                if (path.empty() || path[0].empty()) {
+                    std::cerr << "Save point cloud error : Received an empty file name" << std::endl; return;
+                }
+                std::cout << "Save file to: " << path[0] << std::endl;
+                m_dataMgr->savePointCloud(path[0]);
             });
             b = new Button(tools, "Fit point cloud view");
             b->set_callback([&] {
@@ -98,23 +104,27 @@ namespace poncaplot {
             });
             b = new Button(tools, "Save image");
             b->set_callback([&] {
-                auto path = file_dialog(
-                        {{"png", "PNG image"}}, true);
-                if (path.empty()) return;
-                std::cout << "Save file to: " << path << std::endl;
+                auto path = file_dialog(this, nanogui::FileDialogType::Save,
+                        {{"png", "PNG image"}});
+                if (path.empty() || path[0].empty()) {
+                    std::cerr << "Save image error : Received an empty file name" << std::endl; return;
+                }
+                std::cout << "Save file to: " << path[0] << std::endl;
 
                 size_t factor = 2;
                 float *texture = new float[factor * tex_width * tex_height * 4];
                 renderPassesInternal(factor, texture);
-                write_image(tex_width*factor, tex_height*factor, texture, path);
+                write_image(tex_width*factor, tex_height*factor, texture, path[0]);
                 delete [] (texture);
             });
             b = new Button(tools, "Save sequence (scale)");
             b->set_callback([&] {
-                auto path = file_dialog(
-                        {{"", "basename"}}, true);
-                if (path.empty()) return;
-                std::cout << "Save sequence to: " << path << std::endl;
+                auto path = file_dialog( this, nanogui::FileDialogType::Save,
+                {{"", "basename"}});
+                if (path.empty() || path[0].empty()) {
+                    std::cerr << "Save sequence (scale) error : Received an empty file name" << std::endl; return;
+                }
+                std::cout << "Save sequence to: " << path[0] << std::endl;
 
                 size_t factor = 2;
                 float *texture = new float[factor * tex_width * tex_height * 4];
@@ -126,7 +136,7 @@ namespace poncaplot {
                 {
                     scaleSlider->callback()(float(start+i));
                     std::ostringstream oss;
-                    oss << path << std::setfill('0') << std::setw(4) << i << ".png";
+                    oss << path[0] << std::setfill('0') << std::setw(4) << i << ".png";
                     renderPassesInternal(factor, texture);
                     write_image(tex_width*factor, tex_height*factor, texture, oss.str());
                 }

diff --git a/src/dataManager.cpp b/src/dataManager.cpp
@@ -85,9 +85,9 @@ DataManager::computeNormals(int k){
     for (auto& pp : m_points){
         VectorType p {pp.x(),pp.y()};
         PlaneFit fit;
-        fit.setWeightFunc(WeightFunc());
+        fit.setWeightFunc({p});
         // Set the evaluation position
-        fit.init(p);
+        fit.init();
         // Fit plane (method compute handles multipass fitting
         if (fit.computeWithIds(m_tree.k_nearest_neighbors(p, k), m_tree.points()) == Ponca::STABLE) {
             pp.z() = std::acos(fit.primitiveGradient().normalized().x());

diff --git a/src/drawingPasses/bestFieldFit.h b/src/drawingPasses/bestFieldFit.h
@@ -71,16 +71,15 @@ struct BestFitField : public SingleFitField<_FitType, DrawingPass> {
     ~BestFitField() override = default;
 
     using FitType = _FitType;
-    using WeightFunc = typename FitType::WeightFunction;
 
     /// Method called at the end of the fitting process, only for stable fits
     virtual void postProcess(FitType& /*fit*/){};
 
     inline float configureAndFit(const KdTree& points, FitType& fit, RenderingContext ctx) override {
         // Configure computation to be centered on the point cloud coordinates
         float scale = points.nodes()[0].getAabb()->diagonal().norm();
-        fit.setWeightFunc(WeightFunc(scale));
-        fit.init(points.nodes()[0].getAabb()->center());
+        fit.setWeightFunc({points.nodes()[0].getAabb()->center(), scale});
+        fit.init();
         // Compute fit
         fit.compute(points.points());
         postProcess(fit);
@@ -106,19 +105,18 @@ struct OnePointFitField : public SingleFitField<_FitType, BaseFitField>, public
     ~OnePointFitField() override = default;
 
     using FitType     = _FitType;
-    using WeightFunc = typename FitType::WeightFunction;
     using Scalar     = typename FitType::Scalar;
 
     /// Method called at the end of the fitting process, only for stable fits
     virtual void postProcess(FitType& /*fit*/){};
 
     inline float configureAndFit(const KdTree& points, FitType& fit, RenderingContext ctx) override {
         // Configure computation to be centered on the point cloud coordinates
-        fit.setWeightFunc(WeightFunc(BaseFitField::params.m_scale));
         auto query = points.points()[pointId].pos();
         // Compute fit
         for (int iter = 0; iter != BaseFitField::params.m_iter; ++iter) {
-            fit.init(query);
+            fit.setWeightFunc({query, BaseFitField::params.m_scale});
+            fit.init();
             if (fit.computeWithIds(points.range_neighbors(query, BaseFitField::params.m_scale), points.points()) ==
                 Ponca::STABLE) {
                 postProcess(fit);

diff --git a/src/drawingPasses/poncaFitField.h b/src/drawingPasses/poncaFitField.h
@@ -10,7 +10,6 @@ struct FitField : public BaseFitField {
     ~FitField() override = default;
 
     using FitType = _FitType;
-    using WeightFunc = typename FitType::WeightFunction;
 
     /// Method called at the end of the fitting process, only for stable fits
     virtual void postProcess(FitType& /*fit*/){};
@@ -37,10 +36,10 @@ struct FitField : public BaseFitField {
 
                 FitType fit;
                 // Set a weighting function instance
-                fit.setWeightFunc(WeightFunc(params.m_scale));
+                fit.setWeightFunc({query, params.m_scale});
                 // Set the evaluation position
                 for (int iter = 0; iter != params.m_iter; ++iter) {
-                    fit.init(query);
+                    fit.init();
                     // Fit plane (method compute handles multipass fitting
                     if (fit.computeWithIds(points.range_neighbors(query, params.m_scale), points.points()) ==
                         Ponca::STABLE) {
@@ -82,14 +81,14 @@ struct FitField : public BaseFitField {
             do {
                 FitType fit;
                 // Set a weighting function instance
-                fit.setWeightFunc(WeightFunc(params.m_scale));
+                fit.setWeightFunc({x, params.m_scale});
 
                 // Set the evaluation position
                 for (int iter = 0; iter != params.m_iter; ++iter) {
                     x = nextx;
 
                     // project to next location and draw
-                    fit.init(x);
+                    fit.init();
                     if (fit.computeWithIds(points.range_neighbors(x, params.m_scale), points.points()) ==
                         Ponca::STABLE) {
                         postProcess(fit);

diff --git a/src/main.cpp b/src/main.cpp
@@ -43,7 +43,7 @@ int main(int argc , char ** argv) {
                 app->dec_ref();
                 app->draw_all();
                 app->set_visible(true);
-                nanogui::mainloop(1 / 10.f * 1000);
+                nanogui::run(nanogui::RunMode::VSync);
             }
 
             nanogui::shutdown();
+9 −3		.github/workflows/ContinuousTest.yml
+5 −7		.github/workflows/deployDoc.yml
+42 −1		CHANGELOG
+1 −1		CMakeLists.txt
+19 −23		Ponca/src/Fitting/algebraicSphere.h
+1 −0		Ponca/src/Fitting/algebraicSphere.hpp
+222 −107		Ponca/src/Fitting/basket.h
+61 −0		Ponca/src/Fitting/compute.h
+45 −0		Ponca/src/Fitting/covarianceFit.h
+64 −4		Ponca/src/Fitting/covarianceFit.hpp
+1 −0		Ponca/src/Fitting/covariancePlaneFit.h
+5 −1		Ponca/src/Fitting/covariancePlaneFit.hpp
+2 −2		Ponca/src/Fitting/curvature.hpp
+4 −4		Ponca/src/Fitting/curvatureEstimation.hpp
+1 −1		Ponca/src/Fitting/defines.h
+2 −2		Ponca/src/Fitting/linePrimitive.h
+7 −0		Ponca/src/Fitting/mean.h
+8 −8		Ponca/src/Fitting/mean.hpp
+2 −2		Ponca/src/Fitting/mlsSphereFitDer.hpp
+3 −2		Ponca/src/Fitting/mongePatch.hpp
+7 −5		Ponca/src/Fitting/orientedSphereFit.hpp
+3 −3		Ponca/src/Fitting/plane.h
+10 −7		Ponca/src/Fitting/primitive.h
+2 −2		Ponca/src/Fitting/sphereFit.hpp
+4 −4		Ponca/src/Fitting/unorientedSphereFit.hpp
+100 −13		Ponca/src/Fitting/weightFunc.h
+56 −3		Ponca/src/Fitting/weightKernel.h
+5 −5		Ponca/src/SpatialPartitioning/KdTree/kdTree.hpp
+66 −2		Ponca/src/SpatialPartitioning/KdTree/kdTreeTraits.h
+1 −1		Ponca/src/SpatialPartitioning/KnnGraph/Query/knnGraphRangeQuery.h
+1 −1		Ponca/src/SpatialPartitioning/KnnGraph/knnGraph.h
+3 −4		Ponca/src/SpatialPartitioning/indexSquaredDistance.h
+17 −8		Ponca/src/SpatialPartitioning/query.h
+2 −2		README.md
+1 −0		cmake/PoncaConfigureFitting.cmake
+3 −3		doc/examples/concepts.hpp
+189 −5		doc/src/concepts.mdoc
+1 −1		doc/src/example_cxx_binding.mdoc
+12 −1		doc/src/ponca.bib
+0 −42		doc/src/ponca_changelog.mdoc
+31 −60		doc/src/ponca_module_fitting.mdoc
+1 −2		doc/src/ponca_module_spatialpartitioning.mdoc
+2 −1		examples/cpp/nanoflann/nanoflann.hpp
+13 −6		examples/cpp/nanoflann/ponca_nanoflann.cpp
+2 −0		examples/cpp/pcl/CMakeLists.txt
+4 −5		examples/cpp/pcl/pcl_wrapper.hpp
+2 −3		examples/cpp/ponca_basic_cpu.cpp
+3 −5		examples/cpp/ponca_binding.cpp
+1 −1		examples/cpp/ponca_customize_kdtree.cpp
+1 −2		examples/cpp/ponca_fit_line.cpp
+1 −4		examples/cpp/ponca_fit_plane.cpp
+1 −1		examples/cpp/ponca_neighbor_search.cpp
+3 −2		examples/cuda/CMakeLists.txt
+7 −9		examples/cuda/ponca_ssgls.cu
+1 −1		external/eigen
+57 −23		tests/common/testUtils.h
+1 −0		tests/src/CMakeLists.txt
+1 −2		tests/src/algebraicsphere_primitive.cpp
+43 −82		tests/src/basket.cpp
+1 −2		tests/src/curvature_plane.cpp
+1 −2		tests/src/curvature_sphere.cpp
+1 −2		tests/src/dnormal_orthogonal_derivatives.cpp
+1 −2		tests/src/dnormal_plane.cpp
+1 −2		tests/src/dnormal_sphere.cpp
+1 −2		tests/src/dpotential_plane.cpp
+1 −2		tests/src/dpotential_sphere.cpp
+4 −6		tests/src/fit_cov.cpp
+2 −3		tests/src/fit_line.cpp
+1 −3		tests/src/fit_monge_patch.cpp
+32 −4		tests/src/fit_plane.cpp
+2 −3		tests/src/fit_radius_curvature_center.cpp
+3 −6		tests/src/fit_unoriented.cpp
+3 −7		tests/src/gls_compare.cpp
+21 −27		tests/src/gls_paraboloid_der.cpp
+1 −2		tests/src/gls_sphere_der.cpp
+1 −2		tests/src/gls_tau.cpp
+134 −0		tests/src/mls.cpp
+1 −2		tests/src/normal_plane.cpp
+1 −2		tests/src/normal_sphere.cpp
+12 −12		tests/src/projection.cpp
+3 −6		tests/src/scale_space_consistency.cpp
+61 −0		tests/src/weight_kernel.cpp
+15 −0		.github/ISSUE_TEMPLATE/1-stb_image-doesn-t-load-specific-image-correctly.md
+0 −0		.github/ISSUE_TEMPLATE/2-bug_report.md
+0 −0		.github/ISSUE_TEMPLATE/3-feature_request.md
+1 −0		.github/ISSUE_TEMPLATE/config.yml
+6 −6		README.md
+2 −0		SECURITY.md
+2 −1		stb_c_lexer.h
+6 −3		stb_image.h
+710 −384		stb_image_resize2.h
+8 −6		stb_truetype.h
+4 −0		tests/stb.dsp
+1 −1		tests/test_vorbis.c
+1 −1		tools/README.header.md