Смена цвета сторон куба по таймеру и источник света [OpenGL] - Java
Формулировка задачи:
Здравствуйте, я новичок изучаю OpenGL и не получается реализовать две функции: смена цвета сторон куба по событию и добавления источника света. Пожалуйста помогите советом или примером! Заранее спасибо!
Вот код куба
Листинг программы
- import com.jogamp.opengl.*;
- import com.jogamp.opengl.awt.GLCanvas;
- import com.jogamp.opengl.glu.GLU;
- import com.jogamp.opengl.util.FPSAnimator;
- import java.awt.*;
- import javax.swing.*;
- import static com.sun.tools.doclint.Entity.lt;
- public class Cube implements GLEventListener {
- public static DisplayMode dm, dm_old;
- private GLU glu = new GLU();
- private float rquad = 0.0f;
- @Override
- public void display( GLAutoDrawable drawable ) {
- final GL2 gl = drawable.getGL().getGL2();
- gl.glClear(GL2.GL_COLOR_BUFFER_BIT | GL2.GL_DEPTH_BUFFER_BIT );
- gl.glLoadIdentity();
- gl.glTranslatef( 0f, 0f, -5.0f );
- // Rotate The Cube On X, Y & Z
- gl.glRotatef(rquad, 1.0f, 1.0f, 1.0f);
- //giving different colors to different sides
- gl.glBegin(GL2.GL_QUADS); // Start Drawing The Cube
- gl.glColor3f(1f,0f,0f); //red color
- gl.glVertex3f(1.0f, 1.0f, -1.0f); // Top Right Of The Quad (Top)
- gl.glVertex3f( -1.0f, 1.0f, -1.0f); // Top Left Of The Quad (Top)
- gl.glVertex3f( -1.0f, 1.0f, 1.0f ); // Bottom Left Of The Quad (Top)
- gl.glVertex3f( 1.0f, 1.0f, 1.0f ); // Bottom Right Of The Quad (Top)
- gl.glColor3f( 0f,1f,0f ); //green color
- gl.glVertex3f( 1.0f, -1.0f, 1.0f ); // Top Right Of The Quad
- gl.glVertex3f( -1.0f, -1.0f, 1.0f ); // Top Left Of The Quad
- gl.glVertex3f( -1.0f, -1.0f, -1.0f ); // Bottom Left Of The Quad
- gl.glVertex3f( 1.0f, -1.0f, -1.0f ); // Bottom Right Of The Quad
- gl.glColor3f( 0f,0f,1f ); //blue color
- gl.glVertex3f( 1.0f, 1.0f, 1.0f ); // Top Right Of The Quad (Front)
- gl.glVertex3f( -1.0f, 1.0f, 1.0f ); // Top Left Of The Quad (Front)
- gl.glVertex3f( -1.0f, -1.0f, 1.0f ); // Bottom Left Of The Quad
- gl.glVertex3f( 1.0f, -1.0f, 1.0f ); // Bottom Right Of The Quad
- gl.glColor3f( 1f,1f,0f ); //yellow (red + green)
- gl.glVertex3f( 1.0f, -1.0f, -1.0f ); // Bottom Left Of The Quad
- gl.glVertex3f( -1.0f, -1.0f, -1.0f ); // Bottom Right Of The Quad
- gl.glVertex3f( -1.0f, 1.0f, -1.0f ); // Top Right Of The Quad (Back)
- gl.glVertex3f( 1.0f, 1.0f, -1.0f ); // Top Left Of The Quad (Back)
- gl.glColor3f( 1f,0f,1f ); //purple (red + green)
- gl.glVertex3f( -1.0f, 1.0f, 1.0f ); // Top Right Of The Quad (Left)
- gl.glVertex3f( -1.0f, 1.0f, -1.0f ); // Top Left Of The Quad (Left)
- gl.glVertex3f( -1.0f, -1.0f, -1.0f ); // Bottom Left Of The Quad
- gl.glVertex3f( -1.0f, -1.0f, 1.0f ); // Bottom Right Of The Quad
- gl.glColor3f( 0f,1f, 1f ); //sky blue (blue +green)
- gl.glVertex3f( 1.0f, 1.0f, -1.0f ); // Top Right Of The Quad (Right)
- gl.glVertex3f( 1.0f, 1.0f, 1.0f ); // Top Left Of The Quad
- gl.glVertex3f( 1.0f, -1.0f, 1.0f ); // Bottom Left Of The Quad
- gl.glVertex3f( 1.0f, -1.0f, -1.0f ); // Bottom Right Of The Quad
- gl.glEnd(); // Done Drawing The Quad
- gl.glFlush();
- rquad -= 0.15f;
- }
- @Override
- public void dispose( GLAutoDrawable drawable ) {
- // TODO Auto-generated method stub
- }
- @Override
- public void init( GLAutoDrawable drawable ) {
- final GL2 gl = drawable.getGL().getGL2();
- gl.glShadeModel( GL2.GL_SMOOTH );
- gl.glClearColor( 0f, 0f, 0f, 0f );
- gl.glClearDepth( 1.0f );
- gl.glEnable( GL2.GL_DEPTH_TEST );
- gl.glDepthFunc( GL2.GL_LEQUAL );
- gl.glHint( GL2.GL_PERSPECTIVE_CORRECTION_HINT, GL2.GL_NICEST );
- }
- @Override
- public void reshape( GLAutoDrawable drawable, int x, int y, int width, int height ) {
- // TODO Auto-generated method stub
- final GL2 gl = drawable.getGL().getGL2();
- //if( height lt;=0 )
- //height = 1;
- final float h = ( float ) width / ( float ) height;
- gl.glViewport( 0, 0, width, height );
- gl.glMatrixMode( GL2.GL_PROJECTION );
- gl.glLoadIdentity();
- glu.gluPerspective( 45.0f, h, 1.0, 20.0 );
- gl.glMatrixMode( GL2.GL_MODELVIEW );
- gl.glLoadIdentity();
- }
- public static void main( String[] args ) {
- final GLProfile profile = GLProfile.get( GLProfile.GL2 );
- GLCapabilities capabilities = new GLCapabilities( profile );
- // The canvas
- final GLCanvas glcanvas = new GLCanvas( capabilities );
- Cube cube = new Cube();
- glcanvas.addGLEventListener( cube );
- glcanvas.setSize( 400, 400 );
- final JFrame frame = new JFrame ( " Multicolored cube" );
- frame.getContentPane().add( glcanvas );
- frame.setSize( frame.getContentPane().getPreferredSize() );
- frame.setVisible( true );
- final FPSAnimator animator = new FPSAnimator(glcanvas, 300,true);
- animator.start();
- }
- }
С источником света я смог разобраться, теперь все получается. Остается только понять, как заставить по таймеру менять цвет сторон куба
Листинг программы
- gl.glEnable(GL2.GL_LIGHTING);
- gl.glEnable(GL2.GL_LIGHT0);//активируем нулевой свет
- gl.glEnable(GL2.GL_COLOR_MATERIAL);//включаем освещение материала (???)
Решение задачи: «Смена цвета сторон куба по таймеру и источник света [OpenGL]»
textual
Листинг программы
- import com.jogamp.opengl.*;
- import com.jogamp.opengl.awt.GLCanvas;
- import com.jogamp.opengl.glu.GLU;
- import com.jogamp.opengl.util.FPSAnimator;
- import javax.swing.*;
- import java.awt.*;
- public class Cube implements GLEventListener {
- public static DisplayMode dm, dm_old;
- private GLU glu = new GLU();
- private float rquad = 0.0f;
- private float[] color1 = new float[]{1f, 0f, 0f}; //red color
- private float[] color2 = new float[]{0f, 1f, 0f}; //green color
- private float[] color3 = new float[]{0f, 0f, 1f}; //blue color
- private float[] color4 = new float[]{1f, 1f, 0f}; //yellow (red + green)
- private float[] color5 = new float[]{1f, 0f, 1f}; //purple (red + green)
- private float[] color6 = new float[]{0f, 1f, 1f}; //sky blue (blue +green)
- private Thread thread = new Thread();
- public static void main(String[] args) {
- final GLProfile profile = GLProfile.get(GLProfile.GL2);
- GLCapabilities capabilities = new GLCapabilities(profile);
- // The canvas
- final GLCanvas glcanvas = new GLCanvas(capabilities);
- Cube cube = new Cube();
- glcanvas.addGLEventListener(cube);
- glcanvas.setSize(400, 400);
- final JFrame frame = new JFrame(" Multicolored cube");
- frame.getContentPane().add(glcanvas);
- frame.setSize(frame.getContentPane().getPreferredSize());
- frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
- frame.setVisible(true);
- final FPSAnimator animator = new FPSAnimator(glcanvas, 300, true);
- animator.start();
- }
- @Override
- public void display(GLAutoDrawable drawable) {
- final GL2 gl = drawable.getGL().getGL2();
- gl.glClear(GL2.GL_COLOR_BUFFER_BIT | GL2.GL_DEPTH_BUFFER_BIT);
- gl.glLoadIdentity();
- gl.glTranslatef(0f, 0f, -5.0f);
- // Rotate The Cube On X, Y & Z
- gl.glRotatef(rquad, 1.0f, 1.0f, 1.0f);
- //giving different colors to different sides
- gl.glBegin(GL2.GL_QUADS); // Start Drawing The Cube
- gl.glColor3fv(color1, 0);
- gl.glVertex3f(1.0f, 1.0f, -1.0f); // Top Right Of The Quad (Top)
- gl.glVertex3f(-1.0f, 1.0f, -1.0f); // Top Left Of The Quad (Top)
- gl.glVertex3f(-1.0f, 1.0f, 1.0f); // Bottom Left Of The Quad (Top)
- gl.glVertex3f(1.0f, 1.0f, 1.0f); // Bottom Right Of The Quad (Top)
- gl.glColor3fv(color2, 0);
- gl.glVertex3f(1.0f, -1.0f, 1.0f); // Top Right Of The Quad
- gl.glVertex3f(-1.0f, -1.0f, 1.0f); // Top Left Of The Quad
- gl.glVertex3f(-1.0f, -1.0f, -1.0f); // Bottom Left Of The Quad
- gl.glVertex3f(1.0f, -1.0f, -1.0f); // Bottom Right Of The Quad
- gl.glColor3fv(color3, 0);
- gl.glVertex3f(1.0f, 1.0f, 1.0f); // Top Right Of The Quad (Front)
- gl.glVertex3f(-1.0f, 1.0f, 1.0f); // Top Left Of The Quad (Front)
- gl.glVertex3f(-1.0f, -1.0f, 1.0f); // Bottom Left Of The Quad
- gl.glVertex3f(1.0f, -1.0f, 1.0f); // Bottom Right Of The Quad
- gl.glColor3fv(color4, 0);
- gl.glVertex3f(1.0f, -1.0f, -1.0f); // Bottom Left Of The Quad
- gl.glVertex3f(-1.0f, -1.0f, -1.0f); // Bottom Right Of The Quad
- gl.glVertex3f(-1.0f, 1.0f, -1.0f); // Top Right Of The Quad (Back)
- gl.glVertex3f(1.0f, 1.0f, -1.0f); // Top Left Of The Quad (Back)
- gl.glColor3fv(color5, 0);
- gl.glVertex3f(-1.0f, 1.0f, 1.0f); // Top Right Of The Quad (Left)
- gl.glVertex3f(-1.0f, 1.0f, -1.0f); // Top Left Of The Quad (Left)
- gl.glVertex3f(-1.0f, -1.0f, -1.0f); // Bottom Left Of The Quad
- gl.glVertex3f(-1.0f, -1.0f, 1.0f); // Bottom Right Of The Quad
- gl.glColor3fv(color6, 0);
- gl.glVertex3f(1.0f, 1.0f, -1.0f); // Top Right Of The Quad (Right)
- gl.glVertex3f(1.0f, 1.0f, 1.0f); // Top Left Of The Quad
- gl.glVertex3f(1.0f, -1.0f, 1.0f); // Bottom Left Of The Quad
- gl.glVertex3f(1.0f, -1.0f, -1.0f); // Bottom Right Of The Quad
- gl.glEnd(); // Done Drawing The Quad
- gl.glFlush();
- rquad -= 0.15f;
- if (!thread.isAlive()) {
- thread = new Thread(() -> {
- try {Thread.sleep(2000);} catch (InterruptedException e) {}
- color1[0] = (float) Math.random();
- color1[1] = (float) Math.random();
- color1[2] = (float) Math.random();
- color2[0] = (float) Math.random();
- color2[1] = (float) Math.random();
- color2[2] = (float) Math.random();
- color3[0] = (float) Math.random();
- color3[1] = (float) Math.random();
- color3[2] = (float) Math.random();
- color4[0] = (float) Math.random();
- color4[1] = (float) Math.random();
- color4[2] = (float) Math.random();
- color5[0] = (float) Math.random();
- color5[1] = (float) Math.random();
- color5[2] = (float) Math.random();
- color6[0] = (float) Math.random();
- color6[1] = (float) Math.random();
- color6[2] = (float) Math.random();
- });
- thread.start();
- }
- }
- @Override
- public void dispose(GLAutoDrawable drawable) {
- // TODO Auto-generated method stub
- }
- @Override
- public void init(GLAutoDrawable drawable) {
- final GL2 gl = drawable.getGL().getGL2();
- gl.glShadeModel(GL2.GL_SMOOTH);
- gl.glClearColor(0f, 0f, 0f, 0f);
- gl.glClearDepth(1.0f);
- gl.glEnable(GL2.GL_DEPTH_TEST);
- gl.glDepthFunc(GL2.GL_LEQUAL);
- gl.glHint(GL2.GL_PERSPECTIVE_CORRECTION_HINT, GL2.GL_NICEST);
- }
- @Override
- public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {
- // TODO Auto-generated method stub
- final GL2 gl = drawable.getGL().getGL2();
- //if( height lt;=0 )
- //height = 1;
- final float h = (float) width / (float) height;
- gl.glViewport(0, 0, width, height);
- gl.glMatrixMode(GL2.GL_PROJECTION);
- gl.glLoadIdentity();
- glu.gluPerspective(45.0f, h, 1.0, 20.0);
- gl.glMatrixMode(GL2.GL_MODELVIEW);
- gl.glLoadIdentity();
- }
- }
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