public Vector3 calculatePos(int x, int y, Object3D object3D) {
Matrix4 mViewMatrix = getCurrentCamera().getViewMatrix();
Matrix4 mProjectionMatrix = getCurrentCamera().getProjectionMatrix();
double[] mNearPos4 = new double[4];
double[] mFarPos4 = new double[4];
Vector3 mNearPos = new Vector3();
Vector3 mFarPos = new Vector3();
Vector3 mNewObjPos = new Vector3();
int[] mViewport = new int[] {0, 0, getViewportWidth(), getViewportHeight()};
GLU.gluUnProject(
x,
getViewportHeight() - y,
0,
mViewMatrix.getDoubleValues(),
0,
mProjectionMatrix.getDoubleValues(),
0,
mViewport,
0,
mNearPos4,
0);
GLU.gluUnProject(
x,
getViewportHeight() - y,
1.f,
mViewMatrix.getDoubleValues(),
0,
mProjectionMatrix.getDoubleValues(),
0,
mViewport,
0,
mFarPos4,
0);
mNearPos.setAll(
mNearPos4[0] / mNearPos4[3], mNearPos4[1] / mNearPos4[3], mNearPos4[2] / mNearPos4[3]);
mFarPos.setAll(
mFarPos4[0] / mFarPos4[3], mFarPos4[1] / mFarPos4[3], mFarPos4[2] / mFarPos4[3]);
double factor =
(Math.abs(object3D.getZ()) + mNearPos.z)
/ (getCurrentCamera().getFarPlane() - getCurrentCamera().getNearPlane());
mNewObjPos.setAll(mFarPos);
mNewObjPos.subtract(mNearPos);
mNewObjPos.multiply(factor);
mNewObjPos.add(mNearPos);
return mNewObjPos;
}
@Override
protected void onRender(long ellapsedRealtime, double deltaTime) {
// -- no proper physics here, just a bad approximation to keep
// this example as short as possible ;-)
mRaptor.setZ(mRaptor.getZ() + 2.0);
mRaptor.setX(Math.sin(mTime) * 20.0);
// mRaptor.setRotZ(Math.sin(mTime + 8.0) * -30.0);
// mRaptor.setRotY(180 + (mRaptor.getRotZ() * 0.1));
// mRaptor.setRotY(180);
mRaptor.setY(Math.cos(mTime) * 10.0);
mRaptor.setRotX(Math.cos(mTime + 1.0) * -20.0);
mSphere.setZ(mRaptor.getZ());
mTime += 0.01;
if (mRootCube.getZ() - mRaptor.getZ() <= (30 * -6)) {
mRootCube.setZ(mRaptor.getZ());
}
mPointLight.setPosition(getCurrentCamera().getPosition());
mPointLight.setLookAt(mRaptor.getWorldPosition());
super.onRender(ellapsedRealtime, deltaTime);
}