change extrusion mode to ABSOLUTE_HEIGHT

Author: tschie

src/main/java/com/esri/samples/featurelayers/feature_layer_extrusion/FeatureLayerExtrusion.gif

@@ -77,8 +77,8 @@ public void start(Stage stage) throws Exception {
     SimpleLineSymbol lineSymbol = new SimpleLineSymbol(SimpleLineSymbol.Style.SOLID, 0xFF000000, 1.0f);
     SimpleFillSymbol fillSymbol = new SimpleFillSymbol(SimpleFillSymbol.Style.SOLID, 0xFF0000FF, lineSymbol);
     final SimpleRenderer renderer = new SimpleRenderer(fillSymbol);
-    //  need to set an extrusion type, BASE HEIGHT extrudes each point from feature individually
-    renderer.getSceneProperties().setExtrusionMode(Renderer.SceneProperties.ExtrusionMode.BASE_HEIGHT);
+    // set the extrusion mode to absolute height
+    renderer.getSceneProperties().setExtrusionMode(Renderer.SceneProperties.ExtrusionMode.ABSOLUTE_HEIGHT);
     statesFeatureLayer.setRenderer(renderer);
 
     // set camera to focus on state features
@@ -98,13 +98,13 @@ public void start(Stage stage) throws Exception {
     Button extrusionButton = new Button("Population Density");
     extrusionButton.setOnAction(v -> {
       if (showTotalPopulation) {
-        // some feature's population is really big of need to sink it down
+        // scale down outlier populations
         renderer.getSceneProperties().setExtrusionExpression("[POP2007]/ 10");
         extrusionButton.setText("Population Density");
         showTotalPopulation = false;
       } else {
-        // density of population is a small value to need to increase it
-        renderer.getSceneProperties().setExtrusionExpression("[POP07_SQMI] * 5000");
+        // scale up density
+        renderer.getSceneProperties().setExtrusionExpression("[POP07_SQMI] * 5000 + 100000");
         extrusionButton.setText("Total Population");
         showTotalPopulation = true;
       }

src/main/java/com/esri/samples/featurelayers/feature_layer_extrusion/FeatureLayerExtrusion.png

@@ -90,7 +90,7 @@ public void start(Stage stage) throws Exception {
       // set renderer with extrusion property
       SimpleRenderer renderer = new SimpleRenderer();
       SceneProperties renderProperties = renderer.getSceneProperties();
-      renderProperties.setExtrusionMode(SceneProperties.ExtrusionMode.BASE_HEIGHT);
+      renderProperties.setExtrusionMode(SceneProperties.ExtrusionMode.ABSOLUTE_HEIGHT);
       renderProperties.setExtrusionExpression("[HEIGHT]");
       graphicsOverlay.setRenderer(renderer);
 

src/main/java/com/esri/samples/featurelayers/feature_layer_extrusion/FeatureLayerExtrusionSample.java

@@ -16,8 +16,7 @@
 <ol>
   <li>Create a <code>GraphicsOverlay</code> and <code>SimpleRenderer</code>.</li>
   <li>Get the renderer's <code>SceneProperties</code> using <code>Renderer.getSceneProperties()</code>.</li>
-  <li>Set the extrusion mode for the renderer with <code>SceneProperties.setExtrusionMode(ExtrusionMode)</code>.
-    <ul><li>BASE_HEIGHT, graphic is extruded to various z-values</li></ul></li>
+  <li>Set the extrusion mode for the renderer with <code>SceneProperties.setExtrusionMode(ExtrusionMode)</code>.</li>
   <li>Specify the attribute name of the graphic that the extrusion mode will use, <code>SceneProperties
   .setExtrusionExpression("[HEIGHT]")</code>.</li>
   <li>Set the renderer on the graphics overlay, <code>GraphicsOverlay.setRenderer(Renderer)</code>.</li>