add TestRandomPoints

Author: capdevon

jme3-examples/src/main/java/jme3test/math/TestRandomPoints.java

@@ -0,0 +1,84 @@
+package jme3test.math;
+
+import com.jme3.app.SimpleApplication;
+import com.jme3.material.Material;
+import com.jme3.math.ColorRGBA;
+import com.jme3.math.FastMath;
+import com.jme3.math.Vector2f;
+import com.jme3.math.Vector3f;
+import com.jme3.scene.Geometry;
+import com.jme3.scene.Mesh;
+import com.jme3.scene.debug.Arrow;
+import com.jme3.scene.debug.Grid;
+import com.jme3.scene.debug.WireSphere;
+import com.jme3.scene.shape.Sphere;
+
+/**
+ * @author capdevon
+ */
+public class TestRandomPoints extends SimpleApplication {
+
+    public static void main(String[] args) {
+        TestRandomPoints app = new TestRandomPoints();
+        app.start();
+    }
+
+    private float radius = 5;
+
+    @Override
+    public void simpleInitApp() {
+        configureCamera();
+        viewPort.setBackgroundColor(ColorRGBA.DarkGray);
+
+        Geometry grid = makeShape("DebugGrid", new Grid(21, 21, 2), ColorRGBA.LightGray);
+        grid.center().move(0, 0, 0);
+        rootNode.attachChild(grid);
+
+        Geometry bsphere = makeShape("BoundingSphere", new WireSphere(radius), ColorRGBA.Red);
+        rootNode.attachChild(bsphere);
+
+        for (int i = 0; i < 100; i++) {
+            Vector2f v = FastMath.insideUnitCircle().multLocal(radius);
+            Arrow arrow = new Arrow(Vector3f.UNIT_Y.negate());
+            Geometry geo = makeShape("Arrow." + i, arrow, ColorRGBA.Green);
+            geo.setLocalTranslation(new Vector3f(v.x, 0, v.y));
+            rootNode.attachChild(geo);
+        }
+
+        for (int i = 0; i < 100; i++) {
+            Vector3f v = FastMath.insideUnitSphere().multLocal(radius);
+            Geometry geo = makeShape("Sphere." + i, new Sphere(16, 16, 0.05f), ColorRGBA.Blue);
+            geo.setLocalTranslation(v);
+            rootNode.attachChild(geo);
+        }
+
+        for (int i = 0; i < 100; i++) {
+            Vector3f v = FastMath.onUnitSphere().multLocal(radius);
+            Geometry geo = makeShape("Sphere." + i, new Sphere(16, 16, 0.06f), ColorRGBA.Cyan);
+            geo.setLocalTranslation(v);
+            rootNode.attachChild(geo);
+        }
+
+        for (int i = 0; i < 100; i++) {
+            float value = FastMath.nextRandomFloat(-5, 5);
+            System.out.println(value);
+        }
+    }
+
+    private void configureCamera() {
+        flyCam.setMoveSpeed(15f);
+        flyCam.setDragToRotate(true);
+
+        cam.setLocation(Vector3f.UNIT_XYZ.mult(12));
+        cam.lookAt(Vector3f.ZERO, Vector3f.UNIT_Y);
+    }
+
+    private Geometry makeShape(String name, Mesh mesh, ColorRGBA color) {
+        Geometry geo = new Geometry(name, mesh);
+        Material mat = new Material(assetManager, "Common/MatDefs/Misc/Unshaded.j3md");
+        mat.setColor("Color", color);
+        geo.setMaterial(mat);
+        return geo;
+    }
+
+}