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 *
   6  */
   7
   8 package eu.svjatoslav.sixth.e3d.renderer.octree.raytracer;
   9
  10 import eu.svjatoslav.sixth.e3d.geometry.Point3D;
  11 import eu.svjatoslav.sixth.e3d.gui.Avatar;
  12 import eu.svjatoslav.sixth.e3d.math.Transform;
  13 import eu.svjatoslav.sixth.e3d.renderer.raster.Color;
  14 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.basic.line.LineAppearance;
  15 import eu.svjatoslav.sixth.e3d.renderer.raster.shapes.composite.TexturedRectangle;
  16 import eu.svjatoslav.sixth.e3d.renderer.raster.texture.Texture;
  17
  18 import javax.imageio.ImageIO;
  19 import java.awt.*;
  20 import java.awt.image.BufferedImage;
  21 import java.io.IOException;
  22 import java.net.URL;
  23
  24 public class Camera extends TexturedRectangle {
  25
  26     public static final int CAMERA_SIZE = 100;
  27     public static final int IMAGE_SIZE = 500;
  28     private final CameraView cameraView;
  29     private Point3D camCenter;
  30
  31     public Camera(final Avatar avatar, final double zoom) {
  32         super(new Transform(avatar.getLocation().clone()));
  33         cameraView = new CameraView(avatar, zoom);
  34
  35         computeCameraCoordinates(avatar);
  36
  37         addWaitNotification(getTexture());
  38     }
  39
  40     private void addWaitNotification(final Texture texture) {
  41         // add hourglass icon
  42         try {
  43             final BufferedImage sprite = getSprite("eu/svjatoslav/sixth/e3d/examples/hourglass.png");
  44             texture.graphics.drawImage(sprite, IMAGE_SIZE / 2,
  45                     (IMAGE_SIZE / 2) - 30, null);
  46         } catch (final Exception ignored) {
  47         }
  48
  49         // add "Please wait..." message
  50         texture.graphics.setColor(java.awt.Color.WHITE);
  51         texture.graphics.setFont(new Font("Monospaced", Font.PLAIN, 10));
  52         texture.graphics.drawString("Please wait...", (IMAGE_SIZE / 2) - 20,
  53                 (IMAGE_SIZE / 2) + 30);
  54     }
  55
  56     private void computeCameraCoordinates(final Avatar avatar) {
  57         initialize(CAMERA_SIZE, CAMERA_SIZE, IMAGE_SIZE, IMAGE_SIZE, 3);
  58
  59         camCenter = new Point3D();
  60
  61         topLeft.setValues(camCenter.x, camCenter.y, camCenter.z + CAMERA_SIZE);
  62
  63         topRight.clone(topLeft);
  64         bottomLeft.clone(topLeft);
  65         bottomRight.clone(topLeft);
  66
  67         final float viewAngle = (float) .6;
  68
  69         topLeft.rotate(camCenter, -viewAngle, -viewAngle);
  70         topRight.rotate(camCenter, viewAngle, -viewAngle);
  71         bottomLeft.rotate(camCenter, -viewAngle, viewAngle);
  72         bottomRight.rotate(camCenter, viewAngle, viewAngle);
  73
  74         topLeft.rotate(camCenter, -avatar.getAngleXZ(), -avatar.getAngleYZ());
  75         topRight.rotate(camCenter, -avatar.getAngleXZ(), -avatar.getAngleYZ());
  76         bottomLeft.rotate(camCenter, -avatar.getAngleXZ(), -avatar.getAngleYZ());
  77         bottomRight.rotate(camCenter, -avatar.getAngleXZ(), -avatar.getAngleYZ());
  78
  79         final Color cameraColor = new Color(255, 255, 0, 255);
  80         final LineAppearance appearance = new LineAppearance(2, cameraColor);
  81
  82         // addShape(appearance.getLine(camCenter, upLeft));
  83         // addShape(appearance.getLine(camCenter, upRight));
  84         // addShape(appearance.getLine(camCenter, downLeft));
  85         // addShape(appearance.getLine(camCenter, downRight));
  86
  87         addShape(appearance.getLine(topLeft, topRight));
  88         addShape(appearance.getLine(bottomLeft, bottomRight));
  89         addShape(appearance.getLine(topLeft, bottomLeft));
  90         addShape(appearance.getLine(topRight, bottomRight));
  91
  92     }
  93
  94     public CameraView getCameraView() {
  95         return cameraView;
  96     }
  97
  98     public BufferedImage getSprite(final String ref) throws IOException {
  99         final URL url = this.getClass().getClassLoader().getResource(ref);
 100         return ImageIO.read(url);
 101     }
 102
 103 }