/**
* The main function opens a 3D rendering window, constructs a simple 3D scene, and starts a timer
* task to generate an animation.
*
* @throws IOException
*/
public static void main(String[] args) throws IOException {
sceneManager = new SimpleSceneManager();
Landscape landscape = new Landscape(7, 50, 20, 10, 5);
// Set up the vertex data and integrate
VertexData vLandscape = landscape.getVertexData();
sLandscape = new Shape(vLandscape);
sceneManager.addShape(sLandscape);
// adjust the camera
camera = sceneManager.getCamera();
Vector3f centerOfProjection = new Vector3f(0, 0, 40);
Vector3f lookAtPoint = new Vector3f(0, 0, 0);
Vector3f upVector = new Vector3f(0, 1, 0);
camera.setCameraMatrix(centerOfProjection, lookAtPoint, upVector);
// adjust the frustum
Frustum frustum = sceneManager.getFrustum();
float nearPlane = 1;
float farPlane = 100;
float aspectRatio = 1;
float vFieldOfView = 60;
frustum.setFrustum(nearPlane, farPlane, aspectRatio, vFieldOfView);
// Make a render panel. The init function of the renderPanel
// (see above) will be called back for initialization.
renderPanel = new SimpleRenderPanel();
// Make the main window of this application and add the renderer to it
// JFrame
jframe = new JFrame("simple");
jframe.setSize(750, 750);
jframe.setLocationRelativeTo(null); // center of screen
jframe.getContentPane().add(renderPanel.getCanvas()); // put the canvas into a JFrame window
// Add a mouse listener
SimpleMouseListener mouse = new SimpleMouseListener();
renderPanel.getCanvas().addMouseListener(mouse); // change proposed in forum
renderPanel.getCanvas().addMouseMotionListener(mouse);
renderPanel.getCanvas().addKeyListener(new MyKeyListener());
jframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jframe.setVisible(true); // show window
}
void setup_camera(float fov, float ratio, float view_distance) {
GL11.glMatrixMode(GL11.GL_PROJECTION);
GL11.glLoadIdentity();
GLU.gluPerspective(fov, ratio, 0.01f, view_distance);
GL11.glMatrixMode(GL11.GL_MODELVIEW);
camera.set_attribs(fov, ratio, 0.01f, view_distance);
}
private void render_batch(ChunkNode.Batch batch) {
if (!camera.collides(batch.box)) return;
Renderer.draw_calls++;
// Use the shader the batch needs
GL20.glUseProgram(batch.shader);
// Bind VBO to vertex pointer
GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, batch.vert_buf);
GL11.glVertexPointer(3, GL11.GL_FLOAT, 0, 0);
// Bind the texture coord VBO to texture pointer
GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, batch.tex_buf);
GL11.glTexCoordPointer(2, GL11.GL_FLOAT, 0, 0);
// Bind the texture for this batch
GL11.glBindTexture(GL11.GL_TEXTURE_2D, batch.tex);
// Bind index array
GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, batch.indices);
// Draw the block
GL12.glDrawRangeElements(
GL11.GL_QUADS,
0,
Constants.Chunk.block_number * 24 - 1,
batch.num_elements,
GL11.GL_UNSIGNED_INT,
0);
Renderer.batch_draw_calls++;
Renderer.quads += batch.num_elements;
// Unbind the texture
GL11.glBindTexture(GL11.GL_TEXTURE_2D, 0);
// Unbind all buffers
GL15.glBindBuffer(GL15.GL_ELEMENT_ARRAY_BUFFER, 0);
GL15.glBindBuffer(GL15.GL_ARRAY_BUFFER, 0);
GL20.glUseProgram(0);
}
public final boolean touchesFrustum(Frustum frustum) {
return frustum.touchesWithBox(this);
}
private void projectObject(Object3D parent) {
for (Object3D object : parent.children) {
if (object.visible == false) continue;
if (object instanceof Light) {
renderData.lights.add((Light) object);
} else if (object instanceof Mesh || object instanceof Line) {
if (object.frustumCulled == false || frustum.intersectObject(object) == true) {
this.object = getNextObjectInPool();
this.object.object = object; // TODO fix casting here.
if (object.renderDepth != Float.NaN) {
this.object.z = object.renderDepth;
} else {
vector3.getPositionFromMatrix(object.matrixWorld);
vector3.applyProjection(viewProjectionMatrix);
this.object.z = vector3.z;
}
renderData.objects.add(this.object);
}
} else if (object instanceof Sprite || object instanceof Particle) {
this.object = getNextObjectInPool();
this.object.object = object;
if (object.renderDepth != Float.NaN) {
this.object.z = object.renderDepth;
} else {
vector3.getPositionFromMatrix(object.matrixWorld);
vector3.applyProjection(viewProjectionMatrix);
this.object.z = vector3.z;
}
renderData.sprites.add(this.object);
} else {
this.object = getNextObjectInPool();
this.object.object = object;
if (object.renderDepth != Float.NaN) {
this.object.z = object.renderDepth;
} else {
vector3.getPositionFromMatrix(object.matrixWorld);
vector3.applyProjection(viewProjectionMatrix);
this.object.z = vector3.z;
}
}
}
projectObject(object);
}
