src/main/java/eu/svjatoslav/sixth/e3d/renderer/octree/raytracer/CameraView.java

   1 /*
   2  * Sixth 3D engine. Author: Svjatoslav Agejenko.
   3  * This project is released under Creative Commons Zero (CC0) license.
   4  */
   5 package eu.svjatoslav.sixth.e3d.renderer.octree.raytracer;
   6
   7 import eu.svjatoslav.sixth.e3d.geometry.Point3D;
   8 import eu.svjatoslav.sixth.e3d.gui.Avatar;
   9
  10 public class CameraView {
  11
  12     Point3D cameraCenter;
  13     Point3D topLeft;
  14     Point3D topRight;
  15     Point3D bottomLeft;
  16     Point3D bottomRight;
  17
  18     public CameraView(final Avatar avatar, final double zoom) {
  19         computeCameraCoordinates(avatar, zoom);
  20     }
  21
  22     private void computeCameraCoordinates(final Avatar avatar, final double zoom) {
  23         cameraCenter = new Point3D(avatar.getLocation()).scaleDown(zoom);
  24
  25         topLeft = new Point3D(cameraCenter.x, cameraCenter.y, cameraCenter.z
  26                 + Camera.SIZE);
  27         topRight = new Point3D(topLeft);
  28         bottomLeft = new Point3D(topLeft);
  29         bottomRight = new Point3D(topLeft);
  30
  31         final float viewAngle = (float) .6;
  32
  33         topLeft.rotate(cameraCenter, -viewAngle, -viewAngle);
  34         topRight.rotate(cameraCenter, viewAngle, -viewAngle);
  35         bottomLeft.rotate(cameraCenter, -viewAngle, viewAngle);
  36         bottomRight.rotate(cameraCenter, viewAngle, viewAngle);
  37
  38         topLeft.rotate(cameraCenter, -avatar.getAngleXZ(), -avatar.getAngleYZ());
  39         topRight.rotate(cameraCenter, -avatar.getAngleXZ(), -avatar.getAngleYZ());
  40         bottomLeft.rotate(cameraCenter, -avatar.getAngleXZ(), -avatar.getAngleYZ());
  41         bottomRight.rotate(cameraCenter, -avatar.getAngleXZ(), -avatar.getAngleYZ());
  42     }
  43
  44 }