/** @see OpenGLTab#init() */
void init() {
GL.glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
// fog color should be the same as the clear color
// to look appropriate
float[] fogColor = {1.0f, 1.0f, 1.0f, 1.0f};
GL.glFogfv(GL.GL_FOG_COLOR, fogColor);
GL.glHint(GL.GL_FOG_HINT, GL.GL_DONT_CARE);
GL.glFogf(GL.GL_FOG_START, 0);
GL.glFogf(GL.GL_FOG_DENSITY, 0.0f);
// set the end of the start distance; anything > 15
// units from the camera will be covered in fog
GL.glFogf(GL.GL_FOG_END, 15);
GL.glFogf(GL.GL_FOG_MODE, FOG_TYPES[0]);
GL.glEnable(GL.GL_FOG);
GL.glEnable(GL.GL_DEPTH_TEST);
cubeListIndexBase = GL.glGenLists(1);
createCube();
}
/** @see OpenGLTab#renderScene() */
void renderScene() {
GL.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
GL.glLoadIdentity();
GL.glTranslatef(xPos, yPos, zPos);
GL.glRotatef(rotY, 0.0f, 1.0f, 0.0f);
GL.glCallList(cubeListIndexBase);
GL.glPushMatrix();
GL.glTranslatef(3, 0, -3);
GL.glCallList(cubeListIndexBase);
GL.glPopMatrix();
GL.glPushMatrix();
GL.glTranslatef(-3, 0, -3);
GL.glCallList(cubeListIndexBase);
GL.glPopMatrix();
GL.glPushMatrix();
GL.glTranslatef(0, 0, 4);
GL.glCallList(cubeListIndexBase);
GL.glPopMatrix();
rotY += 0.6f;
}
/** @see OpenGLTab#dispose() */
void dispose() {
super.dispose();
GL.glDeleteLists(cubeListIndexBase, 1);
}
/** Creates a cube at 0,0 in the viewport. */
void createCube() {
GL.glNewList(cubeListIndexBase, GL.GL_COMPILE);
GL.glBegin(GL.GL_QUADS);
// front
GL.glColor3f(0.0f, 1.0f, 0.0f);
GL.glVertex3f(-0.5f, -0.5f, 0.5f); // bottom left
GL.glColor3f(0.0f, 0.0f, 1.0f);
GL.glVertex3f(0.5f, -0.5f, 0.5f); // bottom right
GL.glColor3f(1.0f, 1.0f, 0.0f);
GL.glVertex3f(0.5f, 0.5f, 0.5f); // top right
GL.glColor3f(1.0f, 0.0f, 0.0f);
GL.glVertex3f(-0.5f, 0.5f, 0.5f); // top left
// back
GL.glColor3f(0.0f, 0.0f, 1.0f);
GL.glVertex3f(-0.5f, -0.5f, -0.5f); // bottom left
GL.glColor3f(0.0f, 1.0f, 0.0f);
GL.glVertex3f(0.5f, -0.5f, -0.5f); // bottom right
GL.glColor3f(1.0f, 0.0f, 0.0f);
GL.glVertex3f(0.5f, 0.5f, -0.5f); // top right
GL.glColor3f(1.0f, 1.0f, 0.0f);
GL.glVertex3f(-0.5f, 0.5f, -0.5f); // top left
// left
GL.glColor3f(0.0f, 0.0f, 1.0f);
GL.glVertex3f(-0.5f, -0.5f, -0.5f); // bottom left
GL.glColor3f(0.0f, 1.0f, 0.0f);
GL.glVertex3f(-0.5f, -0.5f, 0.5f); // bottom right
GL.glColor3f(1.0f, 0.0f, 0.0f);
GL.glVertex3f(-0.5f, 0.5f, 0.5f); // top right
GL.glColor3f(1.0f, 1.0f, 0.0f);
GL.glVertex3f(-0.5f, 0.5f, -0.5f); // top left
// right
GL.glColor3f(0.0f, 0.0f, 1.0f);
GL.glVertex3f(0.5f, -0.5f, 0.5f); // bottom left
GL.glColor3f(0.0f, 1.0f, 0.0f);
GL.glVertex3f(0.5f, -0.5f, -0.5f); // bottom right
GL.glColor3f(1.0f, 0.0f, 0.0f);
GL.glVertex3f(0.5f, 0.5f, -0.5f); // top right
GL.glColor3f(1.0f, 1.0f, 0.0f);
GL.glVertex3f(0.5f, 0.5f, 0.5f); // top left
// top
GL.glColor3f(1.0f, 0.0f, 0.0f);
GL.glVertex3f(0.5f, 0.5f, -0.5f);
GL.glColor3f(1.0f, 1.0f, 0.0f);
GL.glVertex3f(-0.5f, 0.5f, -0.5f);
GL.glColor3f(1.0f, 0.0f, 0.0f);
GL.glVertex3f(-0.5f, 0.5f, 0.5f);
GL.glColor3f(1.0f, 1.0f, 0.0f);
GL.glVertex3f(0.5f, 0.5f, 0.5f);
// bottom
GL.glColor3f(0.0f, 0.0f, 1.0f);
GL.glVertex3f(0.5f, -0.5f, 0.5f);
GL.glColor3f(0.0f, 1.0f, 0.0f);
GL.glVertex3f(-0.5f, -0.5f, 0.5f);
GL.glColor3f(0.0f, 0.0f, 1.0f);
GL.glVertex3f(-0.5f, -0.5f, -0.5f);
GL.glColor3f(0.0f, 1.0f, 0.0f);
GL.glVertex3f(0.5f, -0.5f, -0.5f);
GL.glEnd();
GL.glEndList();
}