Code refactoring

[sixth-3d-demos.git] / src / main / java / eu / svjatoslav / sixth / e3d / examples / GraphDemo.java

diff --git a/src/main/java/eu/svjatoslav/sixth/e3d/examples/GraphDemo.java b/src/main/java/eu/svjatoslav/sixth/e3d/examples/GraphDemo.java
old mode 100644 (file)
new mode 100755 (executable)
index 68a1db1..f644c3a
--- a/src/main/java/eu/svjatoslav/sixth/e3d/examples/GraphDemo.java
+++ b/src/main/java/eu/svjatoslav/sixth/e3d/examples/GraphDemo.java
@@ -1,25 +1,60 @@
 /*
- * Sixth 3D engine demos. Copyright ©2012-2019, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
+ * Sixth 3D engine demos. Author: Svjatoslav Agejenko. 
+ * This project is released under Creative Commons Zero (CC0) license.
  *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of version 3 of the GNU Lesser General Public License
- * or later as published by the Free Software Foundation.
- */
+*/
 
 package eu.svjatoslav.sixth.e3d.examples;
 
 import eu.svjatoslav.sixth.e3d.geometry.Point2D;
 import eu.svjatoslav.sixth.e3d.geometry.Point3D;
 import eu.svjatoslav.sixth.e3d.gui.ViewFrame;
+import eu.svjatoslav.sixth.e3d.renderer.raster.Color;
 import eu.svjatoslav.sixth.e3d.renderer.raster.ShapeCollection;
+import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.basic.line.LineAppearance;
+import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.basic.solidpolygon.SolidPolygon;
 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.composite.Graph;
+import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.composite.wireframe.WireframeSphere;
 
-import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;
 
 public class GraphDemo {
 
+    private static final double WAVE_FREQUENCY = 50d;
+    private static final double WAVE_AMPLITUDE = 50d;
+    private static final Color SQUARE_PLATE_COLOR = new Color("88F7");
+
+    private static void makeSquarePlate(final ShapeCollection shapeCollection,
+                                        final double y, final double x, final double z) {
+        final Point3D p1 = new Point3D(x, y, z);
+        final Point3D p2 = new Point3D(x + 20, y, z);
+        final Point3D p3 = new Point3D(x, y, z + 20);
+        final Point3D p4 = new Point3D(x + 20, y, z + 20);
+        final SolidPolygon polygon1 = new SolidPolygon(p1, p2, p3, SQUARE_PLATE_COLOR);
+        final SolidPolygon polygon2 = new SolidPolygon(p4, p2, p3, SQUARE_PLATE_COLOR);
+        shapeCollection.addShape(polygon1);
+        shapeCollection.addShape(polygon2);
+    }
+
+    /**
+     * @param surfaceElevation surface total elevation
+     */
+    private static void addWobblySurface(final ShapeCollection shapeCollection,
+                                         final double surfaceElevation) {
+        for (double x = -500; x < 500; x += 20)
+            for (double z = -500; z < 500; z += 20) {
+
+                // use Pythagorean theorem to compute distance from the center
+                final double distanceFromCenter = Math.sqrt((x * x) + (z * z));
+
+                double plateElevation = Math.sin(distanceFromCenter / WAVE_FREQUENCY) * WAVE_AMPLITUDE;
+
+                makeSquarePlate(shapeCollection, plateElevation + surfaceElevation, x,
+                        z);
+            }
+    }
+
     private static final double scale = 50d;
 
     private static Graph getCosineGraph(final Point3D location) {
@@ -99,33 +134,54 @@ public class GraphDemo {
         return new Graph(scale, data, "Tangent", location);
     }
 
-    public static void main(final String[] args) throws IOException {
+    public static void main(final String[] args) {
 
         final ViewFrame viewFrame = new ViewFrame();
-
         final ShapeCollection geometryCollection = viewFrame.getViewPanel()
                 .getRootShapeCollection();
 
-        Point3D location = new Point3D(-600, -300, 0);
+        addMathFormulas(geometryCollection);
+        addSphere(geometryCollection);
+        addWobblySurface(geometryCollection, 200);
+        addWobblySurface(geometryCollection, -200);
+
+        setAvatarLocation(viewFrame);
+    }
+
+    private static void addSphere(ShapeCollection geometryCollection) {
+        // add sphere
+        geometryCollection.addShape(new WireframeSphere(new Point3D(0, 0, 0),
+                100,
+                new LineAppearance(
+                        4,
+                        new Color(255,0, 0, 30))
+        ));
+    }
+
+    private static void addMathFormulas(ShapeCollection geometryCollection) {
+        int z = 1000;
+        Point3D location = new Point3D(-600, -300, z);
         geometryCollection.addShape(getSineGraph(location));
 
-        location = new Point3D(600, -300, 0);
+        location = new Point3D(600, -300, z);
         geometryCollection.addShape(getFormula1Graph(location));
 
-        location = new Point3D(-600, 0, 0);
+        location = new Point3D(-600, 0, z);
         geometryCollection.addShape(getCosineGraph(location));
 
-        location = new Point3D(600, 0, 0);
+        location = new Point3D(600, 0, z);
         geometryCollection.addShape(getFormula2Graph(location));
 
-        location = new Point3D(-600, 300, 0);
+        location = new Point3D(-600, 300, z);
         geometryCollection.addShape(getTangentGraph(location));
 
-        location = new Point3D(600, 300, 0);
+        location = new Point3D(600, 300, z);
         geometryCollection.addShape(getFormula3Graph(location));
+    }
 
+    private static void setAvatarLocation(ViewFrame viewFrame) {
         viewFrame.getViewPanel().getAvatar()
                 .setLocation(new Point3D(0, 0, -500));
-
     }
+
 }