5
My problem is this: I have an Opengl program with Java.
I made an animation for the drawing to move, increase and decrease in size, so far so good.
When I went to create a function where the mouse click, my drawing moves to where I clicked I could not because when I click, the mouse picks the x and y coordinate relative to the pixel of the window and not relative to where I clicked in the drawing.
If I could get the right coordinate just play on my global variable x e y that my drawing would move.
Follows the Code:
package teste;
import com.sun.opengl.util.*;
//import lwjgl.opengl.Display;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.media.opengl.*;
import javax.media.opengl.glu.*;
/**
* MouseClique.java <BR>
* author: Brian Paul (converted to Java by Ron Cemer and Sven Goethel) <P>
*
* This version is equal to Brian Paul's version 1.2 1999/10/21
*/
public class MouseClique implements GLEventListener, KeyListener, MouseListener {
float x=0,y=0,x2,larg,alt;
float Multi;
float win;
float xp1,yp1,xp2,yp2,xp3,yp3, rp,gp,bp; // Ponta Avião
float LimitPositivoY, LimitNegativoY, LimitPositivoX,LimitNegativoX;
boolean StatusCima, StatusBaixo,StatusEsquerda,StatusDireita;
boolean direita = false;
boolean esquerda = true;
boolean cima = false;
boolean baixo = false;
boolean Inicia = false;
public void display(GLAutoDrawable drawable) {
GL gl;
GLU glu;
gl = drawable.getGL();
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
gl.glLoadIdentity();
gl.glTranslatef(0.0f, 0.0f, -6.0f);
gl.glBegin(GL.GL_TRIANGLES); //Ponta do Aviao
gl.glColor3f(rp, gp, bp);
gl.glVertex2f(x+xp1,y+ yp1);
gl.glVertex2f(x+xp2,y+ yp2);
gl.glVertex2f(x+xp3,y+ yp3);
gl.glColor3f(rp, gp, bp);
gl.glEnd();
gl.glPointSize(5);
gl.glBegin(GL.GL_POINTS); //Linhas Janela Esquerda Detalhe
gl.glColor3f(0, 0, 0);
gl.glVertex2f(0,0);
gl.glVertex2f(-1,0);
gl.glVertex2f(-2,0);
gl.glVertex2f(-3,0);
gl.glVertex2f(-4,0);
gl.glVertex2f(-5,0);
gl.glVertex2f(1,0);
gl.glVertex2f(2,0);
gl.glVertex2f(3,0);
gl.glVertex2f(4,0);
gl.glVertex2f(5,0);
gl.glVertex2f(0,1);
gl.glVertex2f(0,2);
gl.glVertex2f(0,3);
gl.glVertex2f(0,4);
gl.glVertex2f(0,5);
gl.glVertex2f(0,-1);
gl.glVertex2f(0,-2);
gl.glVertex2f(0,-3);
gl.glVertex2f(0,-4);
gl.glVertex2f(0,-5);
gl.glColor3f(0, 0, 0);
gl.glEnd();
gl.glFlush();
Anima();
}
public void keyPressed(KeyEvent e){
//Controle dos eventos de teclado
System.out.println("Evento do teclado");
switch(e.getKeyChar()) //Cores
{
case 'I':
case 'i':
//Inicia = true;
break;
case 'P':
case 'p':
//Inicia = false;
break;
case 'Q':
case 'q':
// Ponta Avião
rp = 0;
gp = 0;
bp =0;
break;
case 'A':
case 'a':
// Ponta Avião
rp = 1;
gp = 1;
bp =1;
break;
case '1':
if(xp2*1.2f<=LimitPositivoX && yp2*1.2f<=LimitPositivoY && xp3*1.2f>=LimitNegativoX && yp3*1.2f>=LimitNegativoY)
{
xp1 = xp1*1.2f;
yp1 = yp1*1.2f;
xp2 = xp2*1.2f;
yp2 = yp2*1.2f;
xp3 = xp3*1.2f;
yp3 = yp3*1.2f;
}
break;
}
switch(e.getKeyCode()) // Posição
{
case KeyEvent.VK_LEFT:
direita =false;
esquerda=true;
cima = false;
baixo = false;
break;
case KeyEvent.VK_RIGHT:
cima = false;
baixo = false;
direita = true;
esquerda =false;
break;
case KeyEvent.VK_UP:
cima = true;
baixo = false;
direita = false;
esquerda =false;
break;
case KeyEvent.VK_DOWN:
cima = false;
baixo = true;
direita = false;
esquerda =false;
break;
}
}
public void keyReleased(KeyEvent e){}
public void keyTyped(KeyEvent e){}
public void mousePressed(MouseEvent e) {
System.out.println("Evento do mouse");
switch (e.getButton()) {
case MouseEvent.BUTTON1:
float w, h;
w=(float)e.getX();
h=(float)e.getY();
System.out.println(w+","+h);
break;
case MouseEvent.BUTTON3:
break;
}
}
public void mouseReleased(MouseEvent e) {}
public void mouseExited(MouseEvent e) {}
public void mouseClicked(MouseEvent e) {}
public void mouseEntered(MouseEvent e) {}
public void displayChanged(GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged) {
}
public void init(GLAutoDrawable drawable) {
GL gl = drawable.getGL();
GLU glu = new GLU();
gl.setSwapInterval(1);
gl.glClearColor(1.0f, 0.96f, 0.71f, 0.0f);
Multi = 8;
// Ponta Avião
xp1 = -1f/Multi;
yp1 = 3f/Multi;
xp2 = 0f/Multi;
yp2 = 5.0f/Multi;
xp3 = 1f/Multi;
yp3 = 3f/Multi;
rp = 0;
gp = 0;
bp = 0;
gl.glShadeModel(GL.GL_SMOOTH);
drawable.addKeyListener(this);
drawable.addMouseListener(this);
}
public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
GL gl = drawable.getGL();
GLU glu = new GLU();
if (height <= 0) {
height = 1;
}
final float h = (float) width / (float) height;
gl.glViewport(0, 0, width, height);
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glLoadIdentity();
glu.gluPerspective(45.0f, h, 1.0, 20.0);
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glLoadIdentity();
}
public void Anima() {
if(Inicia){
if(direita) {
// Ponta Avião
xp1 += 0.03f;
xp2 += 0.03f;
xp3 += 0.03f;
}
if(esquerda) {
// Ponta Avião
xp1 -= 0.03f;
xp2 -= 0.03f;
xp3 -= 0.03f;
}
if(cima){
// Ponta Avião
yp1 += 0.03f;
yp2 += 0.03f;
yp3 += 0.03f;
}
if(baixo){
// Ponta Avião
yp1 -= 0.03f;
yp2 -= 0.03f;
yp3 -= 0.03f;
}
if(yp2>=LimitPositivoY){
cima = false;
baixo = true;
esquerda = false;
direita = false;
}
if(yp3<=LimitNegativoY){
cima = true;
baixo = false;
esquerda = false;
direita = false;
}
if(xp2<=LimitNegativoX) {
esquerda=false;
direita=true;
cima = false;
baixo = false;
}
if(xp3>=LimitPositivoX) {
esquerda=true;
direita=false;
cima = false;
baixo = false;
}
try {
// Thread.sleep(15);
} catch (Exception e) {
e.printStackTrace();
}
}
}
public static void main(String[] args) {
Frame frame = new Frame("Animaç±ao");
GLCanvas canvas = new GLCanvas();
canvas.addGLEventListener(new MouseClique());
frame.add(canvas);
frame.setSize(1280, 720);
final Animator animator = new Animator(canvas);
frame.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
new Thread(new Runnable() {
public void run() {
animator.stop();
System.exit(0);
}
}).start();
}
});
frame.setLocationRelativeTo(null);
frame.setVisible(true);
animator.start();
}
}
I tried to capture x and y with the commands: e.getx() and.gety(), but I am unable to transform into Opengl coordinate
– Rodolfo Souza
The coordinates I pick up for example are: (580,390) but my object to coordinate this (4,1).
– Rodolfo Souza
Please edit the question and provide more information of your doubt, and a code that is [mcve] so that it is possible to test.
– user28595
Moving an object on a screen is a translation operation. Study the functions that do this.
– Oralista de Sistemas
Transladar I know how to do, my problem is to get the coordinate of the drawing by clicking the mouse.
– Rodolfo Souza
I edited the question as requested.
– Rodolfo Souza
Cannot execute code, it is not reproducible. There are dependencies not mentioned.
– user28595
Your problem is solved in this answer. Give her a read.
– user28595