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POOpenGL Rotating the Camera in 3D
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  1. POOpenGL Rotating the Camera in 3D
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    copied!<p>In OpenGL I have been trying to rotate the camera so I can see the whole 3D Space. I researched rotating the space at the translation point but All I get is the Camera rotating around the center. </p> <p>Here is the code I am using to rotate the view (in Java):</p> <p>Game Loop</p> <pre><code>public Game(){ try { Display.setDisplayMode(new DisplayMode(1280, 720)); Display.setTitle("Survive the Planets"); Display.create(); } catch (LWJGLException e) { e.printStackTrace(); } //Initialize OpenGL glMatrixMode(GL_PROJECTION); glLoadIdentity(); gluPerspective(50f, 1280f / 720f, 1.0f, 10000); glMatrixMode(GL_MODELVIEW); glEnable(GL_TEXTURE_2D); glClearDepth(1.0f); glEnable(GL_DEPTH_TEST); glDepthFunc(GL_LEQUAL); Planet planet = Planet.generateCreative(); planet.viewPlanet(); while(!Display.isCloseRequested()){ //render glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); planet.render(); //update if(Keyboard.isKeyDown(Keyboard.KEY_ESCAPE)){ Display.destroy(); System.exit(0); return; } Camera.rotate(1, 1, 1); Display.update(); Display.sync(240); } Display.destroy(); } </code></pre> <p>Camera Class</p> <pre><code>public class Camera { private static float x, y, z, rX, rY, rZ; public static void translate(float x, float y, float z){ Camera.x += x; Camera.y += y; Camera.z += z; glTranslatef(x, y, z); } public static void rotate(float x, float y, float z){ glRotatef(x, 1, 0, 0); glRotatef(y, 0, 1, 0); glRotatef(z, 0, 0, 1); Camera.rX += x; Camera.rY += y; Camera.rZ += z; } public static void setLocation(float x, float y, float z){ float dx = x - Camera.x; float dy = y - Camera.y; float dz = z - Camera.z; glTranslatef(dx, dy, dz); Camera.x = x; Camera.y = y; Camera.z = z; } public static void setRotation(float x, float y, float z){ float dx = x - Camera.rX; float dy = y - Camera.rY; float dz = z - Camera.rZ; glRotatef(dx, 1, 0, 0); glRotatef(dy, 0, 1, 0); glRotatef(dz, 0, 0, 1); Camera.rX = x; Camera.rY = y; Camera.rZ = z; } } </code></pre> <p>Planet Class:</p> <pre><code>public class Planet { private List&lt;Block&gt; blocks; private PlanetReference ref; private Planet(){ } public void render() { for(Block block : blocks){ block.render(); } } public static Planet generate(PlanetReference ref){ Planet p = new Planet(); p.ref = ref; List&lt;Block&gt; blocks = new CopyOnWriteArrayList&lt;Block&gt;(); System.out.println("Genrating planet " + ref.getName() + "... "); //world generation int r = ref.getRadius() * 32; int i = 0; for(int x = -r; x != r; x += 32){ for(int y = -r; y != r; y += 32){ for(int z = -r; z != r; z += 32){ i += 1; Cube cube = new Cube(x, y, z, 32); if(Game.getDistance(cube.getCenter()) &lt; r){ Block block = new Block(p, Material.DIRT, cube.getLocation()); blocks.add(block); } } } } p.blocks = blocks; System.out.println(blocks.size() + " blocks where generated. " + i); return p; } public void viewPlanet(){ Camera.setLocation(0, 0, -(ref.getRadius() * 96)); } public static Planet generateCreative() { return Planet.generate(new PlanetReference("Creative", 16, 9, 64)); } } </code></pre> <p>Any suggestions on what I should do? If you need anymore code just leave a comment.</p>
 

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