public void createPartControl(final Composite parent) {
Composite top = new Composite(parent, SWT.NONE);
top.setLayout(new FillLayout());
GLData data = new GLData();
data.doubleBuffer = true;
canvas = new GLCanvas(top, SWT.NONE, data);
canvas.setCurrent();
final GLContext context = GLDrawableFactory.getFactory().createExternalGLContext();
context.makeCurrent();
GL gl = context.getGL();
geocontext.initialize(context);
gl.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
context.release();
canvas.addListener(
SWT.Resize,
new Listener() {
public void handleEvent(Event event) {
Rectangle bounds = canvas.getBounds();
canvas.setCurrent();
context.makeCurrent();
GL gl = context.getGL();
geocontext.setHeight(bounds.height);
geocontext.setWidth(bounds.width);
gl.glViewport(0, 0, bounds.width, bounds.height);
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glLoadIdentity();
new GLU().gluOrtho2D(0, 1, 0, 1);
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glLoadIdentity();
context.release();
}
});
canvas.addMouseMoveListener(
new MouseMoveListener() {
@Override
public void mouseMove(MouseEvent e) {
if (e.stateMask == SWT.SHIFT) {
dxx = (int) (geocontext.getZoom() * (e.x - canvas.getBounds().width / 2) / 10);
dyy = (int) (geocontext.getZoom() * (e.y - canvas.getBounds().height / 2) / 10);
geocontext.setDirty(true);
} else {
Point p = new Point();
try {
p.x =
(int)
(geocontext.getX()
+ e.x
* geocontext.getWidth()
/ canvas.getBounds().width
* geocontext.getZoom());
p.y =
(int)
(geocontext.getY()
+ e.y
* geocontext.getHeight()
/ canvas.getBounds().height
* geocontext.getZoom());
root.mouseMoved(p, geocontext);
} catch (Exception ex) {
}
}
}
});
canvas.addMouseWheelListener(
new MouseWheelListener() {
@Override
public void mouseScrolled(MouseEvent e) {
float zoom = (float) (geocontext.getZoom() * Math.pow(2, -e.count / 20.0));
// check mouse position
int posX = e.x;
int posY = e.y;
// calculate the image position of the current position of the mouse
int x =
(int)
(geocontext.getX()
+ posX
* geocontext.getWidth()
/ canvas.getBounds().width
* geocontext.getZoom());
int y =
(int)
(geocontext.getY()
+ posY
* geocontext.getHeight()
/ canvas.getBounds().height
* geocontext.getZoom());
geocontext.setZoom(zoom);
// translate the image origin to have the same mouse position in the geocontext
geocontext.setX(
(int)
(x
- posX
* geocontext.getWidth()
/ canvas.getBounds().width
* geocontext.getZoom()));
geocontext.setY(
(int)
(y
- posY
* geocontext.getHeight()
/ canvas.getBounds().height
* geocontext.getZoom()));
geocontext.setDirty(true);
}
});
final Runnable core =
new Runnable() {
int count = 0;
long[] times = new long[500];
public void run() {
if (!canvas.isDisposed()) {
if (count == times.length) {
count = 0;
double fps = 0;
for (int i = 0; i < times.length - 1; i++) {
fps += (times[i + 1] - times[i]) / 1000.;
}
fps /= times.length - 1;
System.out.println(1 / fps);
} else {
times[count++] = System.currentTimeMillis();
}
canvas.setCurrent();
context.makeCurrent();
GL gl = context.getGL();
gl.glClear(GL.GL_COLOR_BUFFER_BIT | GL.GL_DEPTH_BUFFER_BIT);
if (dxx != 0 || dyy != 0) {
dxx /= 1.2;
dyy /= 1.2;
geocontext.setX(geocontext.getX() + dxx);
geocontext.setY(geocontext.getY() + dyy);
}
geocontext.initialize(context);
geocontext.setDirty(true);
root.render(geocontext);
canvas.swapBuffers();
context.release();
try {
Thread.sleep(15);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
canvas.getDisplay().asyncExec(this);
}
}
};
canvas.getDisplay().asyncExec(core);
registerView();
renderLayers();
}
@Override
public void refresh() {
geocontext.setDirty(true);
root.render(geocontext);
}