[src] Fix drawing when path is not valid. Still display stress direction and end points (#70)

* [src] Fix drawing when path is not valid. Still display stress direction and end points

* change fracrute path color

Author: epernod

src/Tearing/BaseTearingEngine.inl

@@ -737,7 +737,7 @@ void BaseTearingEngine<DataTypes>::draw(const core::visual::VisualParams* vparam
 
     if (d_showFracturePath.getValue())
     {
-        if (m_maxStressTriangleIndex != InvalidID && m_fracturePath.pathOk)
+        if (m_maxStressTriangleIndex != InvalidID)
         {
             helper::ReadAccessor< Data<VecCoord> > x(d_input_positions);
 
@@ -752,32 +752,34 @@ void BaseTearingEngine<DataTypes>::draw(const core::visual::VisualParams* vparam
             points.push_back(Pa);
             points.push_back(Pc);
             // Blue == computed fracture path using d_fractureMaxLength
-            vparams->drawTool()->drawPoints(points, 10, sofa::type::RGBAColor(1, 0.2, 1, 1));
-            vparams->drawTool()->drawLines(points, 1, sofa::type::RGBAColor(1, 0.5, 1, 1));
+            vparams->drawTool()->drawPoints(points, 10, sofa::type::RGBAColor(0, 1, 0, 1));
+            vparams->drawTool()->drawLines(points, 1, sofa::type::RGBAColor(0.2, 1, 0, 1));
 
             //---------------------------------------------------------------------------------------------------
             // Green == principal stress direction
             vector<Coord> pointsDir;
             pointsDir.push_back(Pa);
 
             pointsDir.push_back(Pa + 100.0*(principalStressDirection));
-            vparams->drawTool()->drawPoints(pointsDir, 10, sofa::type::RGBAColor(0, 1, 0.2, 1));
-            vparams->drawTool()->drawLines(pointsDir, 1, sofa::type::RGBAColor(0, 1, 0.5, 1));
+            vparams->drawTool()->drawPoints(pointsDir, 10, sofa::type::RGBAColor(0, 1, 0.4, 1));
+            vparams->drawTool()->drawLines(pointsDir, 1, sofa::type::RGBAColor(0, 1, 0.8, 1));
 
-            std::vector<Vec3> pointsPath;
-            for (auto ptA : m_fracturePath.pointsToAdd)
+            if (m_fracturePath.pathOk)
             {
-                sofa::type::Vec3 vecG = sofa::type::Vec3(0.0, 0.0, 0.0);
-                sofa::Size nbr = ptA->m_ancestors.size();
-                for (int i = 0; i < nbr; ++i)
+                std::vector<Vec3> pointsPath;
+                for (auto ptA : m_fracturePath.pointsToAdd)
                 {
-
-                    vecG += x[ptA->m_ancestors[i]] * ptA->m_coefs[i];
+                    sofa::type::Vec3 vecG = sofa::type::Vec3(0.0, 0.0, 0.0);
+                    sofa::Size nbr = ptA->m_ancestors.size();
+                    for (int i = 0; i < nbr; ++i)
+                    {
+
+                        vecG += x[ptA->m_ancestors[i]] * ptA->m_coefs[i];
+                    }
+                    pointsPath.push_back(vecG);
                 }
-                pointsPath.push_back(vecG);
+                vparams->drawTool()->drawSpheres(pointsPath, 0.01, sofa::type::RGBAColor::red());
             }
-            vparams->drawTool()->drawSpheres(pointsPath, 0.01, sofa::type::RGBAColor::red());
-
         }
     }
 }