raytracer/CameraView.java

   1 /*
   2  * Sixth 3D engine. Copyright ©2012-2016, Svjatoslav Agejenko, svjatoslav@svjatoslav.eu
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of version 3 of the GNU Lesser General Public License
   6  * or later as published by the Free Software Foundation.
   7  *
   8  */
   9
  10 package eu.svjatoslav.sixth.e3d.renderer.octree.raytracer;
  11
  12 import eu.svjatoslav.sixth.e3d.geometry.Point3D;
  13 import eu.svjatoslav.sixth.e3d.gui.Avatar;
  14
  15 public class CameraView {
  16
  17     Point3D camCenter;
  18     Point3D upLeft;
  19     Point3D upRight;
  20     Point3D downLeft;
  21     Point3D downRight;
  22
  23     public CameraView(final Avatar avatar, final double zoom) {
  24         computeCameraCoordinates(avatar, zoom);
  25     }
  26
  27     private void computeCameraCoordinates(final Avatar avatar, final double zoom) {
  28         camCenter = new Point3D(avatar.getLocation()).scaleDown(zoom);
  29
  30         upLeft = new Point3D(camCenter.x, camCenter.y, camCenter.z
  31                 + Camera.CAMERA_SIZE);
  32         upRight = new Point3D(upLeft);
  33         downLeft = new Point3D(upLeft);
  34         downRight = new Point3D(upLeft);
  35
  36         final float viewAngle = (float) .6;
  37
  38         upLeft.rotate(camCenter, -viewAngle, -viewAngle);
  39         upRight.rotate(camCenter, viewAngle, -viewAngle);
  40         downLeft.rotate(camCenter, -viewAngle, viewAngle);
  41         downRight.rotate(camCenter, viewAngle, viewAngle);
  42
  43         upLeft.rotate(camCenter, -avatar.getAngleXZ(), -avatar.getAngleYZ());
  44         upRight.rotate(camCenter, -avatar.getAngleXZ(), -avatar.getAngleYZ());
  45         downLeft.rotate(camCenter, -avatar.getAngleXZ(), -avatar.getAngleYZ());
  46         downRight.rotate(camCenter, -avatar.getAngleXZ(), -avatar.getAngleYZ());
  47     }
  48
  49 }