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

   1 /*
   2  * Sixth 3D engine. Copyright ©2012-2018, 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 import eu.svjatoslav.sixth.e3d.math.Transform;
  15 import eu.svjatoslav.sixth.e3d.renderer.raster.Color;
  16 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.basic.line.LineAppearance;
  17 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.composite.TexturedRectangle;
  18 import eu.svjatoslav.sixth.e3d.renderer.raster.texture.Texture;
  19
  20 import javax.imageio.ImageIO;
  21 import java.awt.*;
  22 import java.awt.image.BufferedImage;
  23 import java.io.IOException;
  24 import java.net.URL;
  25
  26 public class Camera extends TexturedRectangle {
  27
  28     public static final int CAMERA_SIZE = 100;
  29     public static final int IMAGE_SIZE = 500;
  30     private final CameraView cameraView;
  31     private Point3D camCenter;
  32
  33     public Camera(final Avatar avatar, final double zoom) {
  34         super(new Transform(avatar.getLocation().clone()));
  35         cameraView = new CameraView(avatar, zoom);
  36
  37         computeCameraCoordinates(avatar);
  38
  39         addWaitNotification(getTexture());
  40     }
  41
  42     private void addWaitNotification(final Texture texture) {
  43         // add hourglass icon
  44         try {
  45             final BufferedImage sprite = getSprite("eu/svjatoslav/sixth/e3d/examples/hourglass.png");
  46             texture.graphics.drawImage(sprite, IMAGE_SIZE / 2,
  47                     (IMAGE_SIZE / 2) - 30, null);
  48         } catch (final Exception ignored) {
  49         }
  50
  51         // add "Please wait..." message
  52         texture.graphics.setColor(java.awt.Color.WHITE);
  53         texture.graphics.setFont(new Font("Monospaced", Font.PLAIN, 10));
  54         texture.graphics.drawString("Please wait...", (IMAGE_SIZE / 2) - 20,
  55                 (IMAGE_SIZE / 2) + 30);
  56     }
  57
  58     private void computeCameraCoordinates(final Avatar avatar) {
  59         initialize(CAMERA_SIZE, CAMERA_SIZE, IMAGE_SIZE, IMAGE_SIZE, 3);
  60
  61         camCenter = new Point3D();
  62
  63         topLeft.setValues(camCenter.x, camCenter.y, camCenter.z + CAMERA_SIZE);
  64
  65         topRight.clone(topLeft);
  66         bottomLeft.clone(topLeft);
  67         bottomRight.clone(topLeft);
  68
  69         final float viewAngle = (float) .6;
  70
  71         topLeft.rotate(camCenter, -viewAngle, -viewAngle);
  72         topRight.rotate(camCenter, viewAngle, -viewAngle);
  73         bottomLeft.rotate(camCenter, -viewAngle, viewAngle);
  74         bottomRight.rotate(camCenter, viewAngle, viewAngle);
  75
  76         topLeft.rotate(camCenter, -avatar.getAngleXZ(), -avatar.getAngleYZ());
  77         topRight.rotate(camCenter, -avatar.getAngleXZ(), -avatar.getAngleYZ());
  78         bottomLeft.rotate(camCenter, -avatar.getAngleXZ(), -avatar.getAngleYZ());
  79         bottomRight.rotate(camCenter, -avatar.getAngleXZ(), -avatar.getAngleYZ());
  80
  81         final Color cameraColor = new Color(255, 255, 0, 255);
  82         final LineAppearance appearance = new LineAppearance(2, cameraColor);
  83
  84         // addShape(appearance.getLine(camCenter, upLeft));
  85         // addShape(appearance.getLine(camCenter, upRight));
  86         // addShape(appearance.getLine(camCenter, downLeft));
  87         // addShape(appearance.getLine(camCenter, downRight));
  88
  89         addShape(appearance.getLine(topLeft, topRight));
  90         addShape(appearance.getLine(bottomLeft, bottomRight));
  91         addShape(appearance.getLine(topLeft, bottomLeft));
  92         addShape(appearance.getLine(topRight, bottomRight));
  93
  94     }
  95
  96     public CameraView getCameraView() {
  97         return cameraView;
  98     }
  99
 100     public BufferedImage getSprite(final String ref) throws IOException {
 101         final URL url = this.getClass().getClassLoader().getResource(ref);
 102         return ImageIO.read(url);
 103     }
 104
 105 }