automatic points size

CGoGN/include/Utils/vbo.hpp

@@ -36,6 +36,10 @@ void VBO::updateData(std::vector<T>& data)
 		CGoGNerr << "Error locked VBO" << CGoGNendl;
 		return;
 	}
+
+	if (data.empty())
+		return;
+
 	m_data_size = sizeof(T) / sizeof(float);
 	m_nbElts = uint32(data.size());
 

SCHNApps/Plugins/surface_render/include/surface_render.h

@@ -46,6 +46,7 @@ struct MapParameters
 	Utils::VBO* colorVBO;
 
 	float verticesScaleFactor;
+	float basePSradius;
 	bool renderVertices;
 	bool renderEdges;
 	bool renderFaces;
@@ -134,6 +135,7 @@ protected:
 	CGoGN::Utils::ShaderColorPerVertex* m_colorPerVertexShader;
 	CGoGN::Utils::ShaderSimpleColor* m_simpleColorShader;
 	CGoGN::Utils::PointSprite* m_pointSprite;
+
 };
 
 } // namespace SCHNApps

SCHNApps/Plugins/surface_render/src/surface_render.cpp

@@ -115,7 +115,8 @@ void Surface_Render_Plugin::drawMap(View* view, MapHandlerGen* map)
 
 		if(p.renderVertices)
 		{
-			m_pointSprite->setSize(map->getBBdiagSize() / 200.0f * p.verticesScaleFactor);
+//			m_pointSprite->setSize(map->getBBdiagSize() / 200.0f * p.verticesScaleFactor);
+			m_pointSprite->setSize(p.basePSradius * 2 * p.verticesScaleFactor);
 			m_pointSprite->setAttributePosition(p.positionVBO);
 			m_pointSprite->setColor(p.vertexColor);
 			map->draw(m_pointSprite, CGoGN::Algo::Render::GL2::POINTS);

SCHNApps/Plugins/surface_render/src/surface_render_dockTab.cpp

@@ -97,6 +97,9 @@ void Surface_Render_DockTab::renderVerticesChanged(bool b)
 		MapHandlerGen* map = m_schnapps->getSelectedMap();
 		if (view && map)
 		{
+			if (b)
+				m_plugin->h_viewParameterSet[view][map].basePSradius = map->getBBdiagSize() / (8 * std::sqrt(map->getNbOrbits(EDGE)));
+
 			m_plugin->h_viewParameterSet[view][map].renderVertices = b;
 			view->updateGL();
 			m_plugin->pythonRecording("changeRenderVertices", "", view->getName(), map->getName(), b);
@@ -112,7 +115,7 @@ void Surface_Render_DockTab::verticesScaleFactorChanged(int i)
 		MapHandlerGen* map = m_schnapps->getSelectedMap();
 		if (view && map)
 		{
-			m_plugin->h_viewParameterSet[view][map].verticesScaleFactor = i / 50.0;
+			m_plugin->h_viewParameterSet[view][map].verticesScaleFactor = i / 50.0; 
 			view->updateGL();
 			m_plugin->pythonRecording("changeVerticesScaleFactor", "", view->getName(), map->getName(), i / 50.0);
 		}