Halton Colors are introduced as an option for int-values properties. Also,...

Halton Colors are introduced as an option for int-values properties. Also, alpha value for the integer values ouside of selected values is set to zero

OpenVolumeMesh/OVMPropertyVisualizerIntegerT_impl.hh

@@ -46,6 +46,7 @@
 #include "OVMPropertyVisualizerInteger.hh"
 #include <ACG/Utils/ColorConversion.hh>
 #include <ACG/Utils/LinearTwoColorCoder.hh>
+#include <ACG/Utils/HaltonColors.hh>
 
 template <typename MeshT, typename T>
 OVMPropertyVisualizerInteger<MeshT,T>::OVMPropertyVisualizerInteger(MeshT* _mesh, int objectID,  PropertyInfo _propertyInfo, bool isUnsigned)
@@ -109,6 +110,9 @@ void OVMPropertyVisualizerInteger<MeshT, T>::visualizeProp(PropType prop, Handle
 
     auto cc = integerWidget->buildColorCoder();
 
+    ACG::HaltonColors hcol;
+    std::map<T, ACG::Vec4f> val_color_map;
+
     unsigned int range = max - min;
     VolumeMeshObject<MeshT>* object;
     PluginFunctions::getObject(OVMPropertyVisualizer<MeshT>::mObjectID, object);
@@ -121,7 +125,13 @@ void OVMPropertyVisualizerInteger<MeshT, T>::visualizeProp(PropType prop, Handle
             T value = prop[h];
             double pos = (value - min) / (double) range;
             ACG::Vec4f color;
-            if ( integerWidget->intRandom->isChecked() )
+            //if haltonColors is checked
+            if ((integerWidget->intHaltonColors->isEnabled()) && (integerWidget->intHaltonColors->isChecked())){
+              if(val_color_map.find(value) == val_color_map.end()){
+                color = hcol.get_next_color();
+                val_color_map.emplace(value, color);
+              } else color = val_color_map.at(value);
+            } else if ((integerWidget->intRandom->isEnabled()) && (integerWidget->intRandom->isChecked()))
             {
                 // TODO: build appropriate subclass of IColorCoder for this purpose
                 if ( randomColor.find( value ) == randomColor.end() )
@@ -137,6 +147,8 @@ void OVMPropertyVisualizerInteger<MeshT, T>::visualizeProp(PropType prop, Handle
                 color = cc->color_float4(pos);
             }
 
+            if ((value > max) || (value < min)) color[3] = 0; 
+
             object->colors()[h] = color;
         }
     }