src/main/java/eu/svjatoslav/sixth/e3d/renderer/octree/raytracer/Camera.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 import eu.svjatoslav.sixth.e3d.math.Transform;
  10 import eu.svjatoslav.sixth.e3d.renderer.raster.Color;
  11 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.basic.line.LineAppearance;
  12 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.composite.TexturedRectangle;
  13 import eu.svjatoslav.sixth.e3d.renderer.raster.texture.Texture;
  14
  15 import javax.imageio.ImageIO;
  16 import java.awt.*;
  17 import java.awt.image.BufferedImage;
  18 import java.io.IOException;
  19 import java.net.URL;
  20
  21 public class Camera extends TexturedRectangle {
  22
  23     public static final int CAMERA_SIZE = 100;
  24     public static final int IMAGE_SIZE = 500;
  25     private final CameraView cameraView;
  26     private Point3D camCenter;
  27
  28     public Camera(final Avatar avatar, final double zoom) {
  29         super(new Transform(avatar.getLocation().clone()));
  30         cameraView = new CameraView(avatar, zoom);
  31
  32         computeCameraCoordinates(avatar);
  33
  34         addWaitNotification(getTexture());
  35     }
  36
  37     private void addWaitNotification(final Texture texture) {
  38         // add hourglass icon
  39         try {
  40             final BufferedImage sprite = getSprite("eu/svjatoslav/sixth/e3d/examples/hourglass.png");
  41             texture.graphics.drawImage(sprite, IMAGE_SIZE / 2,
  42                     (IMAGE_SIZE / 2) - 30, null);
  43         } catch (final Exception ignored) {
  44         }
  45
  46         // add "Please wait..." message
  47         texture.graphics.setColor(java.awt.Color.WHITE);
  48         texture.graphics.setFont(new Font("Monospaced", Font.PLAIN, 10));
  49         texture.graphics.drawString("Please wait...", (IMAGE_SIZE / 2) - 20,
  50                 (IMAGE_SIZE / 2) + 30);
  51     }
  52
  53     private void computeCameraCoordinates(final Avatar avatar) {
  54         initialize(CAMERA_SIZE, CAMERA_SIZE, IMAGE_SIZE, IMAGE_SIZE, 3);
  55
  56         camCenter = new Point3D();
  57
  58         topLeft.setValues(camCenter.x, camCenter.y, camCenter.z + CAMERA_SIZE);
  59
  60         topRight.clone(topLeft);
  61         bottomLeft.clone(topLeft);
  62         bottomRight.clone(topLeft);
  63
  64         final float viewAngle = (float) .6;
  65
  66         topLeft.rotate(camCenter, -viewAngle, -viewAngle);
  67         topRight.rotate(camCenter, viewAngle, -viewAngle);
  68         bottomLeft.rotate(camCenter, -viewAngle, viewAngle);
  69         bottomRight.rotate(camCenter, viewAngle, viewAngle);
  70
  71         topLeft.rotate(camCenter, -avatar.getAngleXZ(), -avatar.getAngleYZ());
  72         topRight.rotate(camCenter, -avatar.getAngleXZ(), -avatar.getAngleYZ());
  73         bottomLeft.rotate(camCenter, -avatar.getAngleXZ(), -avatar.getAngleYZ());
  74         bottomRight.rotate(camCenter, -avatar.getAngleXZ(), -avatar.getAngleYZ());
  75
  76         final Color cameraColor = new Color(255, 255, 0, 255);
  77         final LineAppearance appearance = new LineAppearance(2, cameraColor);
  78
  79         // addShape(appearance.getLine(camCenter, upLeft));
  80         // addShape(appearance.getLine(camCenter, upRight));
  81         // addShape(appearance.getLine(camCenter, downLeft));
  82         // addShape(appearance.getLine(camCenter, downRight));
  83
  84         addShape(appearance.getLine(topLeft, topRight));
  85         addShape(appearance.getLine(bottomLeft, bottomRight));
  86         addShape(appearance.getLine(topLeft, bottomLeft));
  87         addShape(appearance.getLine(topRight, bottomRight));
  88
  89     }
  90
  91     public CameraView getCameraView() {
  92         return cameraView;
  93     }
  94
  95     public BufferedImage getSprite(final String ref) throws IOException {
  96         final URL url = this.getClass().getClassLoader().getResource(ref);
  97         return ImageIO.read(url);
  98     }
  99
 100 }