/**
* Get the Zone under the specified coordinates.
*
* @param x x coordinate of the specified pixel
* @param y y coordinate of the specified pixel
* @return If there is a Zone at the specified coordinates, that zone, otherwise null.
*/
public Zone pick(int x, int y) {
// clamp x and y
if (y >= picking_context.height) y = picking_context.height - 1;
if (x >= picking_context.width) x = picking_context.width - 1;
if (y < 0) y = 0;
if (x < 0) x = 0;
PGL pgl = picking_context.beginPGL();
int pixel;
// force fallback until 2.0b10
if (!SMT.fastPickingEnabled() || pgl == null) {
// really slow way(max 70 fps on a high end card vs 200+ fps with readPixels), with loadPixels
// at the end of render()
pixel = picking_context.pixels[x + y * picking_context.width];
} else {
buffer.clear();
pgl.readPixels(x, picking_context.height - y, 1, 1, GL.GL_RGBA, GL.GL_UNSIGNED_BYTE, buffer);
pixel = buffer.getInt();
}
picking_context.endPGL();
if (zoneMap.containsKey(pixel)) {
// if mapped it is either a Zone or null (background)
Zone picked = zoneMap.get(pixel);
Zone current = picked;
while (current != null) {
if (current.stealChildrensTouch) return current;
current = current.getParent();
}
return picked;
} else return null;
}
protected void initGL() {
// System.out.println("*******************************");
if (profile == null) {
if (PJOGL.profile == 2) {
try {
profile = GLProfile.getGL2ES2();
} catch (GLException ex) {
profile = GLProfile.getMaxProgrammable(true);
}
} else if (PJOGL.profile == 3) {
try {
profile = GLProfile.getGL2GL3();
} catch (GLException ex) {
profile = GLProfile.getMaxProgrammable(true);
}
if (!profile.isGL3()) {
PGraphics.showWarning("Requested profile GL3 but is not available, got: " + profile);
}
} else if (PJOGL.profile == 4) {
try {
profile = GLProfile.getGL4ES3();
} catch (GLException ex) {
profile = GLProfile.getMaxProgrammable(true);
}
if (!profile.isGL4()) {
PGraphics.showWarning("Requested profile GL4 but is not available, got: " + profile);
}
} else throw new RuntimeException(PGL.UNSUPPORTED_GLPROF_ERROR);
}
// Setting up the desired capabilities;
GLCapabilities caps = new GLCapabilities(profile);
caps.setAlphaBits(PGL.REQUESTED_ALPHA_BITS);
caps.setDepthBits(PGL.REQUESTED_DEPTH_BITS);
caps.setStencilBits(PGL.REQUESTED_STENCIL_BITS);
// caps.setPBuffer(false);
// caps.setFBO(false);
pgl.reqNumSamples = PGL.smoothToSamples(graphics.smooth);
caps.setSampleBuffers(true);
caps.setNumSamples(pgl.reqNumSamples);
caps.setBackgroundOpaque(true);
caps.setOnscreen(true);
pgl.capabilities = caps;
}