Hello..
I am new to LWJGL.I have loaded a 3D model(house like structure) using the code given below.Now, I need to get a button inside the model so that the user can enter into the model and click the button.
Please provide me some solution.Thank You.
Main.java
package Model;
import static org.lwjgl.opengl.GL11.*;
import static org.lwjgl.util.glu.GLU.*;
import java.io.IOException;
import org.lwjgl.LWJGLException;
import org.lwjgl.input.Keyboard;
import org.lwjgl.input.Mouse;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.DisplayMode;
import org.lwjgl.util.vector.Vector3f;
public class Main {
private Model m;
private Vector3f location, rotation;
public static void main(String[] args) throws IOException {
new Main().run();
}
private void run() throws IOException {
try {
Display.setDisplayMode(new DisplayMode(1400, 1000));
Display.setTitle("3D interaction");
Display.setResizable(true);
Display.setInitialBackground(0f, 0f, 0f);
Display.create();
} catch (LWJGLException e) {
e.printStackTrace();
Display.destroy();
System.exit(1);
}
location = new Vector3f(-1.0f, -5.0f, -70.0f);
rotation = new Vector3f(0.0f, 0.0f, 0.0f);
try {
m = Model.getModel("res/Model.obj");
} catch (Exception e){
e.printStackTrace();
}
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glEnable(GL_TEXTURE_2D);
gluPerspective(30f, (float) (1200/800), 3.0f, 100);
glMatrixMode(GL_MODELVIEW);
//glEnable(GL_DEPTH_TEST);
while(!Display.isCloseRequested()){
input();
render();
Display.update();
Display.sync(60);
}
Display.destroy();
System.exit(0);
}
private void input() {
boolean up = Keyboard.isKeyDown(Keyboard.KEY_W);
boolean down = Keyboard.isKeyDown(Keyboard.KEY_S);
boolean left = Keyboard.isKeyDown(Keyboard.KEY_A);
boolean right = Keyboard.isKeyDown(Keyboard.KEY_D);
boolean speedUp = Keyboard.isKeyDown(Keyboard.KEY_LSHIFT);
boolean slowDown = Keyboard.isKeyDown(Keyboard.KEY_LCONTROL);
float walkspeed = 0.15f;
float mx = Mouse.getDX();
float my = Mouse.getDY();
mx *= 0.15f;
my *= 0.15f;
if (Mouse.isButtonDown(0)){
rotation.y += mx;
if (rotation.y > 360){
rotation.y -= 360;
}
rotation.y += my;
if (rotation.x > 85){
rotation.x = 85;
}
if (rotation.x < -85){
rotation.x = -85;
}
}
if(speedUp && !slowDown){
walkspeed = 0.25f;
}
if(slowDown && !speedUp){
walkspeed = 0.15f;
}
if(up && !down){
float cz = (float) (walkspeed * 2 * Math.cos(Math.toRadians(rotation.y)));
float cx = (float) (walkspeed * Math.sin(Math.toRadians(rotation.y)));
location.z += cz;
location.x -= cx;
}
if(down && !up){
float cz = (float) (walkspeed * 2 * Math.cos(Math.toRadians(rotation.y)));
float cx = (float) (walkspeed * Math.sin(Math.toRadians(rotation.y)));
location.z -= cz;
location.x += cx;
}
if(right && !left){
float cz = (float) (walkspeed * 4 * Math.cos(Math.toRadians(rotation.y)));
float cx = (float) (walkspeed * Math.sin(Math.toRadians(rotation.y)));
rotation.y += cz;
rotation.x -= cx;
}
if(left && !right){
float cz = (float) (walkspeed * 4 * Math.cos(Math.toRadians(rotation.y)));
float cx = (float) (walkspeed * Math.sin(Math.toRadians(rotation.y)));
rotation.y -= cz;
rotation.x += cx;
}
}
private void render() throws IOException {
glPushMatrix();
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glLoadIdentity();
//glRotatef(rotation.x, 1f, 0f, 0f);
glRotatef(rotation.y, 0f, 1f, 0f);
//glRotatef(rotation.z, 0f, 0f, 1f);
glTranslatef(location.x, location.y, location.z);
m.render();
glPopMatrix();
}
}
Model.java
package Model;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.lwjgl.util.vector.Vector3f;
import org.newdawn.slick.Color;
import static org.lwjgl.opengl.GL11.*;
public class Model {
public List<Vector3f> verts;
public List<Vector3f> norms;
public List<Face> faces;
public static Model getModel(String s) throws IOException{
return new Model(s);
}
private Model(String path) throws IOException{
verts = new ArrayList<Vector3f>();
norms = new ArrayList<Vector3f>();
faces = new ArrayList<Face>();
new ModelLoader(this, path);
}
public void render() throws IOException{
// glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
Color.gray.bind();
//TextureLoader.getTexture("JPEG", ResourceLoader.getResourceAsStream("res/i.jpeg"));
glBegin(GL_TRIANGLES);
for (Face f : faces){
Vector3f v1 = verts.get((int) f.verts.x -1);
Vector3f n1 = verts.get((int) f.norms.x -1);
Vector3f v2 = verts.get((int) f.verts.y -1);
Vector3f n2 = verts.get((int) f.norms.y -1);
Vector3f v3 = verts.get((int) f.verts.z -1);
Vector3f n3 = verts.get((int) f.norms.z -1);
glNormal3f(n1.x, n1.y, n1.z);
glVertex3f(v1.x, v1.y, v1.z);
glNormal3f(n2.x, n2.y, n2.z);
glVertex3f(v2.x, v2.y, v2.z);
glNormal3f(n3.x, n3.y, n3.z);
glVertex3f(v3.x, v3.y, v3.z);
}
glEnd();
}
}
ModelLoader.java
package Model;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import org.lwjgl.util.vector.Vector3f;
public class ModelLoader {
public ModelLoader(Model m, String path) throws IOException {
BufferedReader read = new BufferedReader(new FileReader(new File(path)));
String line;
while((line = read.readLine()) != null) {
if (line.startsWith("v ")){
float x = Float.valueOf(line.split(" ")[1]);
float y = Float.valueOf(line.split(" ")[2]);
float z = Float.valueOf(line.split(" ")[3]);
Vector3f v = new Vector3f(x, y, z);
m.verts.add(v);
} else if (line.startsWith("vm ")) {
float x = Float.valueOf(line.split(" ")[1]);
float y = Float.valueOf(line.split(" ")[2]);
float z = Float.valueOf(line.split(" ")[3]);
Vector3f v = new Vector3f(x, y, z);
m.norms.add(v);
} else if (line.startsWith("f ")) {
float x1 = Float.valueOf(line.split(" ")[1].split("/")[0]);
float y1 = Float.valueOf(line.split(" ")[2].split("/")[0]);
float z1 = Float.valueOf(line.split(" ")[3].split("/")[0]);
float x2 = Float.valueOf(line.split(" ")[1].split("/")[0]);
float y2 = Float.valueOf(line.split(" ")[2].split("/")[0]);
float z2 = Float.valueOf(line.split(" ")[3].split("/")[0]);
Face f = new Face(new Vector3f(x2, y2, z2), new Vector3f(x1, y1, z1));
m.faces.add(f);
}
}
read.close();
}
}
Face.java
package Model;
import org.lwjgl.util.vector.Vector3f;
public class Face {
public Vector3f norms, verts;
public Face(Vector3f n, Vector3f v){
this.norms = n;
this.verts = v;
}
}