public void updateDrawData() {
mBGStarPositionsBuffer.position(0);
mBGStarColorsBuffer.position(0);
mBGStarTexturesBuffer.position(0);
// Update the star data
for (Star star : BGStarSet) {
Geocentric position = star.getCoords();
Geocentric u = MathUtils.normalize(MathUtils.crossProduct(position, Z_UP_VECTOR));
Geocentric v = MathUtils.crossProduct(u, position);
float sizer = star.magnitude * mRenderer.mPointSizeFactor;
Geocentric sized_u = new Geocentric(u.x * sizer, u.y * sizer, u.z * sizer);
Geocentric sized_v = new Geocentric(v.x * sizer, v.y * sizer, v.z * sizer);
float[] bottomLeft = {
position.x - sized_u.x - sized_v.x,
position.y - sized_u.y - sized_v.y,
position.z - sized_u.z - sized_v.z
};
float[] topLeft = {
position.x - sized_u.x + sized_v.x,
position.y - sized_u.y + sized_v.y,
position.z - sized_u.z + sized_v.z
};
float[] bottomRight = {
position.x + sized_u.x - sized_v.x,
position.y + sized_u.y - sized_v.y,
position.z + sized_u.z - sized_v.z
};
float[] topRight = {
position.x + sized_u.x + sized_v.x,
position.y + sized_u.y + sized_v.y,
position.z + sized_u.z + sized_v.z
};
// Inserting first triangle (counter-clockwise)
mBGStarPositionsBuffer.put(topLeft);
mBGStarPositionsBuffer.put(bottomLeft);
mBGStarPositionsBuffer.put(topRight);
// Inserting second triangle (counter-clockwise)
mBGStarPositionsBuffer.put(bottomLeft);
mBGStarPositionsBuffer.put(bottomRight);
mBGStarPositionsBuffer.put(topRight);
// Inserting Color per Star (white)
mBGStarColorsBuffer.put(STAR_COLOR_DATA_ARRAY);
// Inserting Texture Coordinates per Star
mBGStarTexturesBuffer.put(TEX_COORD_ARRAY);
}
mBGStarPositionsBuffer.position(0);
mBGStarColorsBuffer.position(0);
mBGStarTexturesBuffer.position(0);
}
private void changeMapX(float radians) {
Geocentric lookVector = mUser.getLookDir();
Geocentric crossVector = MathUtils.crossProduct(lookVector, mUser.getLookNormal());
Geocentric deltaLookVector =
new Geocentric(crossVector.x * radians, crossVector.y * radians, crossVector.z * radians);
Geocentric newLookDir = MathUtils.add(lookVector, deltaLookVector);
newLookDir = MathUtils.normalize(newLookDir);
mUser.setLookDir(newLookDir);
}
private void rotate(float radians) {
Geocentric lookVector = mUser.getLookDir();
Geocentric upVector = mUser.getLookNormal();
Matrix3x3 rotationMatrix = MathUtils.createRotationMatrix(radians, lookVector);
Geocentric newUpVector = MathUtils.multiplyGeocentricAndMatrix3x3(rotationMatrix, upVector);
newUpVector = MathUtils.normalize(newUpVector);
mUser.setLookNormal(newUpVector);
}
private void changeMapY(float radians) {
Geocentric lookVector = mUser.getLookDir();
Geocentric upVector = mUser.getLookNormal();
Geocentric deltaLookVector =
new Geocentric(upVector.x * -radians, upVector.y * -radians, upVector.z * -radians);
Geocentric newLookDir = MathUtils.add(lookVector, deltaLookVector);
newLookDir = MathUtils.normalize(newLookDir);
Geocentric deltaUpVector =
new Geocentric(lookVector.x * radians, lookVector.y * radians, lookVector.z * radians);
Geocentric newUpDir = MathUtils.add(upVector, deltaUpVector);
newUpDir = MathUtils.normalize(newUpDir);
mUser.setLookDir(newLookDir);
mUser.setLookNormal(newUpDir);
}
@Override
public void onSensorChanged(SensorEvent event) {
// smoothing code
for (int i = 0; i < 3; ++i) {
last[i] = current[i];
float diff = event.values[i] - last[i];
float correction = diff * alpha;
for (int j = 1; j < exponent; ++j) {
correction *= Math.abs(diff);
}
if (correction > Math.abs(diff) || correction < -Math.abs(diff)) {
correction = diff;
}
current[i] = last[i] + correction;
}
mNewAccelerationReading.x = -current[0];
mNewAccelerationReading.y = -current[1];
mNewAccelerationReading.z = -current[2];
mUser.setAcceleration(mNewAccelerationReading);
Matrix3x3 phoneSpaceMatrix = mUser.getLocalNorthAndUpMatrix_PhoneSpace();
Matrix3x3 celestialSpaceMatrix = mUser.getLocalNorthAndUpMatrix_CelestialSpace();
Matrix3x3 viewTransform = MathUtils.multiplyMatrices(celestialSpaceMatrix, phoneSpaceMatrix);
Geocentric lookVector = MathUtils.multiplyGeocentricAndMatrix3x3(viewTransform, Z_DOWN_VECTOR);
Geocentric upVector = MathUtils.multiplyGeocentricAndMatrix3x3(viewTransform, INIT_UP_VECTOR);
// Log.d("AccelerometerModel", "INSIDE ACCELEROMETER SENSORCHANGED");
// Log.d("AccelerometerModel", "ps_xx: " + String.valueOf(phoneSpaceMatrix.xx) + " ps_xy: " +
// String.valueOf(phoneSpaceMatrix.xy) + " ps_xz: " + String.valueOf(phoneSpaceMatrix.xz));
// Log.d("AccelerometerModel", "ps_yx: " + String.valueOf(phoneSpaceMatrix.yx) + " ps_yy: " +
// String.valueOf(phoneSpaceMatrix.yy) + " ps_yz: " + String.valueOf(phoneSpaceMatrix.yz));
// Log.d("AccelerometerModel", "ps_zx: " + String.valueOf(phoneSpaceMatrix.zx) + " ps_zy: " +
// String.valueOf(phoneSpaceMatrix.zy) + " ps_zz: " + String.valueOf(phoneSpaceMatrix.zz));
// Log.d("AccelerometerModel", "vt_xx: " + String.valueOf(viewTransform.xx) + " vt_xy: " +
// String.valueOf(viewTransform.xy) + " vt_xz: " + String.valueOf(viewTransform.xz));
// Log.d("AccelerometerModel", "vt_yx: " + String.valueOf(viewTransform.yx) + " vt_yy: " +
// String.valueOf(viewTransform.yy) + " vt_yz: " + String.valueOf(viewTransform.yz));
// Log.d("AccelerometerModel", "vt_zx: " + String.valueOf(viewTransform.zx) + " vt_zy: " +
// String.valueOf(viewTransform.zy) + " vt_zz: " + String.valueOf(viewTransform.zz));
// Log.d("AccelerometerModel", "event.values[0]: " + String.valueOf(event.values[0]) + "
// event.values[1]: " + String.valueOf(event.values[1] + " event.values[2]: " +
// String.valueOf(event.values[2])));
mUser.lookDir = lookVector;
mUser.lookNormal = upVector;
mRenderer.mLookX = mUser.getLookX();
mRenderer.mLookY = mUser.getLookY();
mRenderer.mLookZ = mUser.getLookZ();
mRenderer.mUpX = mUser.getNormalX();
mRenderer.mUpY = mUser.getNormalY();
mRenderer.mUpZ = mUser.getNormalZ();
// Log.d("AccelerometerModel", "lastX: " + String.valueOf(last[0]) + " lastY: " +
// String.valueOf(last[1]) + " lastZ: " + String.valueOf(last[2]));
// Log.d("AccelerometerModel", "currentX: " + String.valueOf(current[0]) + " currentY: " +
// String.valueOf(current[1]) + " currentZ: " + String.valueOf(current[2]));
// Log.d("AccelerometerModel", "mLookX: " + String.valueOf(mUser.getLookX()) + " mLookY: " +
// String.valueOf(mUser.getLookY()) + " mLookZ: " + String.valueOf(mUser.getLookZ()));
// Log.d("AccelerometerModel", "mUpX: " + String.valueOf(mUser.getNormalX()) + " mUpY: " +
// String.valueOf(mUser.getNormalY()) + " mUpZ: " + String.valueOf(mUser.getNormalZ()));
// mGLSurfaceView.requestRender();
}