src/main/java/eu/svjatoslav/sixth/e3d/renderer/raster/shapes/composite/wireframe/WireframeSphere.java

   1 /*
   2  * Sixth 3D engine. Author: Svjatoslav Agejenko.
   3  * This project is released under Creative Commons Zero (CC0) license.
   4  *
   5 *
   6  */
   7
   8 package eu.svjatoslav.sixth.e3d.renderer.raster.shapes.composite.wireframe;
   9
  10 import eu.svjatoslav.sixth.e3d.geometry.Point3D;
  11 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.basic.line.LineAppearance;
  12 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.composite.base.AbstractCompositeShape;
  13
  14 import java.util.ArrayList;
  15
  16 public class WireframeSphere extends AbstractCompositeShape {
  17
  18     ArrayList<Point3D> previousRing = new ArrayList<>();
  19
  20     public WireframeSphere(final Point3D location, final float radius,
  21                            final LineAppearance lineFactory) {
  22         super(location);
  23
  24         final double step = Math.PI / 10;
  25
  26         final Point3D center = new Point3D();
  27
  28         int ringIndex = 0;
  29
  30         for (double j = 0d; j <= (Math.PI * 2); j += step) {
  31
  32             Point3D oldPoint = null;
  33             int pointIndex = 0;
  34
  35             for (double i = 0; i <= (Math.PI * 2); i += step) {
  36                 final Point3D newPoint = new Point3D(0, 0, radius);
  37                 newPoint.rotate(center, i, j);
  38
  39                 if (oldPoint != null)
  40                     addShape(lineFactory.getLine(newPoint, oldPoint));
  41
  42                 if (ringIndex > 0) {
  43                     final Point3D previousRingPoint = previousRing
  44                             .get(pointIndex);
  45                     addShape(lineFactory.getLine(newPoint, previousRingPoint));
  46
  47                     previousRing.set(pointIndex, newPoint);
  48                 } else
  49                     previousRing.add(newPoint);
  50
  51                 oldPoint = newPoint;
  52                 pointIndex++;
  53             }
  54
  55             ringIndex++;
  56         }
  57
  58     }
  59
  60 }