/*
* Initialize z-buffer, projection matrix, light source, and lighting model.
* Do not specify a material property here.
*/
public void init(GLAutoDrawable drawable) {
GL2 gl = drawable.getGL().getGL2();
glut = new GLUT();
//
float position[] = {0.0f, 3.0f, 3.0f, 0.0f};
float local_view[] = {0.0f};
gl.glEnable(GL.GL_DEPTH_TEST);
gl.glDepthFunc(GL.GL_LESS);
gl.glLightfv(GL2.GL_LIGHT0, GL2.GL_POSITION, position, 0);
gl.glLightModelfv(GL2.GL_LIGHT_MODEL_LOCAL_VIEWER, local_view, 0);
gl.glFrontFace(GL.GL_CW);
gl.glEnable(GL2.GL_LIGHTING);
gl.glEnable(GL2.GL_LIGHT0);
gl.glEnable(GL2.GL_AUTO_NORMAL);
gl.glEnable(GL2.GL_NORMALIZE);
gl.glEnable(GL2.GL_FOG);
{
float fogColor[] = {0.5f, 0.5f, 0.5f, 1.0f};
fogMode = GL2.GL_EXP;
gl.glFogi(GL2.GL_FOG_MODE, fogMode);
gl.glFogfv(GL2.GL_FOG_COLOR, fogColor, 0);
gl.glFogf(GL2.GL_FOG_DENSITY, 0.35f);
gl.glHint(GL2.GL_FOG_HINT, GL.GL_DONT_CARE);
gl.glClearColor(0.5f, 0.5f, 0.5f, 1.0f);
}
}
/*
* Initialize fog
*/
public void init(GLAutoDrawable drawable) {
GL2 gl = drawable.getGL().getGL2();
glu = new GLU();
//
float fogColor[] = {0.0f, 0.25f, 0.25f, 1.0f};
f1 = 1.0f;
f2 = 5.0f;
f3 = 10.0f;
gl.glEnable(GL2.GL_FOG);
gl.glFogi(GL2.GL_FOG_MODE, GL2.GL_EXP);
gl.glFogfv(GL2.GL_FOG_COLOR, fogColor, 0);
gl.glFogf(GL2.GL_FOG_DENSITY, 0.25f);
gl.glHint(GL2.GL_FOG_HINT, GL.GL_DONT_CARE);
gl.glFogi(GL2.GL_FOG_COORDINATE_SOURCE, GL2.GL_FOG_COORDINATE);
gl.glClearColor(0.0f, 0.25f, 0.25f, 1.0f); /* fog color */
}
/*
* display() draws a triangle at an angle.
*/
public void display(GLAutoDrawable drawable) {
GL2 gl = drawable.getGL().getGL2();
//
gl.glClear(GL.GL_COLOR_BUFFER_BIT);
if (key != null)
switch (key.getKeyChar()) {
case 'c':
gl.glFogi(GL2.GL_FOG_COORDINATE_SOURCE, GL2.GL_FRAGMENT_DEPTH);
break;
case 'C':
gl.glFogi(GL2.GL_FOG_COORDINATE_SOURCE, GL2.GL_FOG_COORDINATE);
break;
case 'b':
gl.glMatrixMode(GL2.GL_MODELVIEW);
gl.glTranslatef(0.0f, 0.0f, -0.25f);
break;
case 'f':
gl.glMatrixMode(GL2.GL_MODELVIEW);
gl.glTranslatef(0.0f, 0.0f, 0.25f);
break;
default:
break;
}
gl.glColor3f(1.0f, 0.75f, 0.0f);
gl.glBegin(GL2.GL_TRIANGLES);
gl.glFogCoordf(f1);
gl.glVertex3f(2.0f, -2.0f, 0.0f);
gl.glFogCoordf(f2);
gl.glVertex3f(-2.0f, 0.0f, -5.0f);
gl.glFogCoordf(f3);
gl.glVertex3f(0.0f, 2.0f, -10.0f);
gl.glEnd();
gl.glFlush();
}
public void configureGL(GL2 gl) {
gl.glEnable(GL2.GL_FOG);
gl.glFogi(GL2.GL_FOG_MODE, GL2.GL_LINEAR);
gl.glFogf(GL2.GL_FOG_DENSITY, 0.25f);
gl.glFogf(GL2.GL_FOG_START, Math.max(getNearClippingPlane(), fadeOut * 1.0f));
gl.glFogf(GL2.GL_FOG_END, Math.max(1.1f, fadeOut * 1.1f * getSpawnDistance()));
gl.glMatrixMode(GL2.GL_PROJECTION);
gl.glLoadIdentity();
gl.glFrustumf(-1, 1, -man.vheight(), man.vheight(), getNearClippingPlane(), 128.0f);
gl.glScalef(2.0f, 2.0f, 1);
gl.glTranslatef(-0.5f, -man.vheight() / 2.0f, 0);
gl.glMatrixMode(GL2.GL_MODELVIEW);
gl.glLoadIdentity();
}
/*
* display() draws 5 teapots at different z positions.
*/
public void display(GLAutoDrawable drawable) {
GL2 gl = drawable.getGL().getGL2();
//
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
//
if (fogMode == GL2.GL_EXP2) {
gl.glFogf(GL2.GL_FOG_START, 1.0f);
gl.glFogf(GL2.GL_FOG_END, 5.0f);
}
gl.glFogi(GL2.GL_FOG_MODE, fogMode);
renderRedTeapot(gl, -4.0f, -0.5f, -1.0f);
renderRedTeapot(gl, -2.0f, -0.5f, -2.0f);
renderRedTeapot(gl, 0.0f, -0.5f, -3.0f);
renderRedTeapot(gl, 2.0f, -0.5f, -4.0f);
renderRedTeapot(gl, 4.0f, -0.5f, -5.0f);
gl.glFlush();
}
