src/main/java/eu/svjatoslav/sixth/e3d/examples/GraphDemo.java

   1 /*
   2  * Sixth 3D engine demos. Author: Svjatoslav Agejenko.
   3  * This project is released under Creative Commons Zero (CC0) license.
   4  *
   5 */
   6
   7 package eu.svjatoslav.sixth.e3d.examples;
   8
   9 import eu.svjatoslav.sixth.e3d.geometry.Point2D;
  10 import eu.svjatoslav.sixth.e3d.geometry.Point3D;
  11 import eu.svjatoslav.sixth.e3d.gui.ViewFrame;
  12 import eu.svjatoslav.sixth.e3d.renderer.raster.ShapeCollection;
  13 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.composite.Graph;
  14
  15 import java.io.IOException;
  16 import java.util.ArrayList;
  17 import java.util.List;
  18
  19 public class GraphDemo {
  20
  21     private static final double scale = 50d;
  22
  23     private static Graph getCosineGraph(final Point3D location) {
  24         final List<Point2D> data = new ArrayList<>();
  25         for (double x = 0; x < 20; x += 0.25) {
  26             final double y = Math.cos(x);
  27
  28             final Point2D p = new Point2D(x, y);
  29             data.add(p);
  30         }
  31
  32         return new Graph(scale, data, "Cosine", location);
  33     }
  34
  35     private static Graph getFormula1Graph(final Point3D location) {
  36         final List<Point2D> data = new ArrayList<>();
  37         for (double x = 0; x < 20; x += 0.25) {
  38             final double y = Math.sin(Math.tan(x));
  39
  40             final Point2D p = new Point2D(x, y);
  41             data.add(p);
  42         }
  43
  44         return new Graph(scale, data, "y = sin(tan(x))", location);
  45     }
  46
  47     private static Graph getFormula2Graph(final Point3D location) {
  48         final List<Point2D> data = new ArrayList<>();
  49         for (double x = 0; x < 20; x += 0.25) {
  50             final double y = (Math.pow((10 - x), 2) / 30) - 2;
  51
  52             final Point2D p = new Point2D(x, y);
  53             data.add(p);
  54         }
  55
  56         return new Graph(scale, data, "y = ( (10-x)^2 ) / 30", location);
  57     }
  58
  59     private static Graph getFormula3Graph(final Point3D location) {
  60         final List<Point2D> data = new ArrayList<>();
  61         for (double x = 0; x < 20; x += 0.25) {
  62             final double y = Math.sin(x / 2) + Math.sin(x / 1.26);
  63
  64             final Point2D p = new Point2D(x, y);
  65             data.add(p);
  66         }
  67
  68         return new Graph(scale, data, "y = sin(x/2) + sin(x/1.26)", location);
  69     }
  70
  71     private static Graph getSineGraph(final Point3D location) {
  72         final List<Point2D> data = new ArrayList<>();
  73         for (double x = 0; x < 20; x += 0.25) {
  74             final double y = Math.sin(x);
  75
  76             final Point2D p = new Point2D(x, y);
  77             data.add(p);
  78         }
  79
  80         return new Graph(scale, data, "Sine", location);
  81     }
  82
  83     private static Graph getTangentGraph(final Point3D location) {
  84         final List<Point2D> data = new ArrayList<>();
  85         for (double x = 0; x < 20; x += 0.25) {
  86             double y = Math.tan(x);
  87
  88             if (y > 2)
  89                 y = 2;
  90             if (y < -2)
  91                 y = -2;
  92
  93             final Point2D p = new Point2D(x, y);
  94             data.add(p);
  95         }
  96
  97         return new Graph(scale, data, "Tangent", location);
  98     }
  99
 100     public static void main(final String[] args) throws IOException {
 101
 102         final ViewFrame viewFrame = new ViewFrame();
 103
 104         final ShapeCollection geometryCollection = viewFrame.getViewPanel()
 105                 .getRootShapeCollection();
 106
 107         Point3D location = new Point3D(-600, -300, 0);
 108         geometryCollection.addShape(getSineGraph(location));
 109
 110         location = new Point3D(600, -300, 0);
 111         geometryCollection.addShape(getFormula1Graph(location));
 112
 113         location = new Point3D(-600, 0, 0);
 114         geometryCollection.addShape(getCosineGraph(location));
 115
 116         location = new Point3D(600, 0, 0);
 117         geometryCollection.addShape(getFormula2Graph(location));
 118
 119         location = new Point3D(-600, 300, 0);
 120         geometryCollection.addShape(getTangentGraph(location));
 121
 122         location = new Point3D(600, 300, 0);
 123         geometryCollection.addShape(getFormula3Graph(location));
 124
 125         viewFrame.getViewPanel().getAvatar()
 126                 .setLocation(new Point3D(0, 0, -500));
 127
 128     }
 129 }