Add a listener for the min and max slider in the Colorbar preview.

AMAPVox/AMAPVoxVisualization/src/main/java/fr/amap/lidar/amapvox/visualization/views/MainView.java

@@ -31,6 +31,7 @@ import javax.swing.JOptionPane;
 import javax.swing.WindowConstants;
 import net.jcip.annotations.GuardedBy;
 import net.jcip.annotations.ThreadSafe;
+import org.joml.Vector2f;
 
 /**
  * Main view of the project.
@@ -144,10 +145,21 @@ public class MainView extends FrameView {
         propertiesView.setParentView(this);
         propertiesView.setOnChangePropertyCallback((name) -> {
             if (scene != null) {
-                final float min = scene.getVoxelSpaceComponent().getFile().getMinPropertyValue(name);
-                final float max = scene.getVoxelSpaceComponent().getFile().getMaxPropertyValue(name);
+                final Vector2f minAndMax = scene.getVoxelSpaceComponent().getMinAndMaxPropertyValues();
+                final float min = minAndMax.x;
+                final float max = minAndMax.y;
                 final float medium = (max - min) / 2;
-                viewView.setGradientTexts(Float.toString(min), 
+                viewView.setGradientTexts(Float.toString(min),
+                        Float.toString(medium), Float.toString(max));
+            }
+        });
+        propertiesView.setOnChangeMinAndMaxCallback((name) -> {
+            if (scene != null) {
+                final Vector2f minAndMax = scene.getVoxelSpaceComponent().getMinAndMaxPropertyValues();
+                final float min = minAndMax.x;
+                final float max = minAndMax.y;
+                final float medium = (max - min) / 2;
+                viewView.setGradientTexts(Float.toString(min),
                         Float.toString(medium), Float.toString(max));
             }
         });

AMAPVox/AMAPVoxVisualization/src/main/java/fr/amap/lidar/amapvox/visualization/views/PropertiesView.java

@@ -58,6 +58,7 @@ import java.util.concurrent.CopyOnWriteArrayList;
 import java.util.function.Consumer;
 import net.jcip.annotations.GuardedBy;
 import net.jcip.annotations.ThreadSafe;
+import org.joml.Vector2f;
 
 /**
  * Properties view of the project.
@@ -83,6 +84,9 @@ public class PropertiesView extends FrameView {
     
     @GuardedBy("this")
     private Consumer<String> onChangePropertyCallback;
+    
+    @GuardedBy("this")
+    private Consumer<Vector2f> onChangeMinAndMaxCallback;
 
     private JXPanel minAndMaxPanel;
     private JXLabel minAndMaxLabel;
@@ -127,6 +131,11 @@ public class PropertiesView extends FrameView {
             final Consumer<String> onChangePropertyCallback) {
         this.onChangePropertyCallback = onChangePropertyCallback;
     }
+
+    public final synchronized void setOnChangeMinAndMaxCallback(
+            final Consumer<Vector2f> onChangeMinAndMaxCallback) {
+        this.onChangeMinAndMaxCallback = onChangeMinAndMaxCallback;
+    }
     
     public final synchronized void setColorBar(final Color[] colorBar) {
         minAndMaxSlider.getModel().getThumbAt(0).setObject(colorBar[0]);
@@ -272,10 +281,16 @@ public class PropertiesView extends FrameView {
             public void thumbMoved(int thumb, float pos) {
                 if (thumb == minThumb) {
                     controller.changeMinAndMax(pos, lastMax);
+                    if (onChangeMinAndMaxCallback != null) {
+                        onChangeMinAndMaxCallback.accept(new Vector2f(pos, lastMax));
+                    }
                     lastMin = pos;
                 }
                 if (thumb == maxThumb) {
                     controller.changeMinAndMax(lastMin, pos);
+                    if (onChangeMinAndMaxCallback != null) {
+                        onChangeMinAndMaxCallback.accept(new Vector2f(lastMin, pos));
+                    }
                     lastMax = pos;
                 }
             }

AMAPVox/AMAPVoxVisualization/src/main/java/fr/amap/lidar/amapvox/visualization/views/ViewView.java

@@ -54,13 +54,13 @@ public class ViewView extends FrameView {
     private NephosPanel nephosPanel;
 
     private JXPanel gradientPanel;
-    
+
     @GuardedBy("this")
     private JXLabel gradientMinLabel;
-    
+
     @GuardedBy("this")
     private JXLabel gradientMediumLabel;
-    
+
     @GuardedBy("this")
     private JXLabel gradientMaxLabel;
 
@@ -114,14 +114,15 @@ public class ViewView extends FrameView {
                     + colors[maxID].getGreen() + colors[maxID].getBlue()) / 3f / 255;
             gradientMaxLabel.setForeground(maxColor < 0.5f ? Color.WHITE : Color.BLACK);
 
-            gradientPanel.setBackgroundPainter(new ImagePainter((BufferedImage) ColorBars.asIcon(colors, gradientPanel.getWidth(),
+            gradientPanel.setBackgroundPainter(new ImagePainter((BufferedImage) 
+                    ColorBars.asIcon(colors, gradientPanel.getWidth(),
                     gradientPanel.getHeight()).getImage()));
         } catch (Exception ex) {
 
         }
     }
 
-    public final synchronized void setGradientTexts(final String min, 
+    public final synchronized void setGradientTexts(final String min,
             final String medium, final String max) {
         gradientMinLabel.setText("   " + min);
         gradientMediumLabel.setText(medium);

AMAPVox/Dependencies/Nephos3D/src/main/java/fr/amap/lidar/amapvox/nephos3d/entities/extended/VoxelSpace.java

@@ -50,6 +50,7 @@ import java.util.Collection;
 import java.util.Collections;
 import net.jcip.annotations.GuardedBy;
 import net.jcip.annotations.ThreadSafe;
+import org.joml.Vector2f;
 
 /**
  * Component used to display a voxel space.
@@ -394,6 +395,17 @@ public class VoxelSpace extends Component {
 
         setProperty(currentProperty);
     }
+    
+    /**
+     * Get the min and max values of the current property.
+     * @return 
+     */
+    public final synchronized Vector2f getMinAndMaxPropertyValues() {
+        final float minValue = file.getMinPropertyValue(currentProperty);
+        final float maxValue = file.getMaxPropertyValue(currentProperty);
+        return new Vector2f(minValue + (maxValue - minValue) * colorMin,
+                minValue + (maxValue - minValue) * colorMax);
+    }
 
     /**
      * Change if the fast drawing mode is enabled or not.