float ProximityInfo::getNormalizedSquaredDistanceFromCenterFloatG(
const int keyId, const int x, const int y, const bool isGeometric) const {
const float centerX = static_cast<float>(getKeyCenterXOfKeyIdG(keyId, x, isGeometric));
const float centerY = static_cast<float>(getKeyCenterYOfKeyIdG(keyId, y, isGeometric));
const float touchX = static_cast<float>(x);
const float touchY = static_cast<float>(y);
return ProximityInfoUtils::getSquaredDistanceFloat(centerX, centerY, touchX, touchY)
/ GeometryUtils::SQUARE_FLOAT(static_cast<float>(getMostCommonKeyWidth()));
}
// referencePointX is used only for keys wider than most common key width. When the referencePointX
// is NOT_A_COORDINATE, this method calculates the return value without using the line segment.
// isGeometric is currently not used because we don't have extra X coordinates sweet spots for
// geometric input.
int ProximityInfo::getKeyCenterXOfKeyIdG(
const int keyId, const int referencePointX, const bool isGeometric) const {
if (keyId < 0) {
return 0;
}
int centerX = (hasTouchPositionCorrectionData()) ? static_cast<int>(mSweetSpotCenterXs[keyId])
: mCenterXsG[keyId];
const int keyWidth = mKeyWidths[keyId];
if (referencePointX != NOT_A_COORDINATE
&& keyWidth > getMostCommonKeyWidth()) {
// For keys wider than most common keys, we use a line segment instead of the center point;
// thus, centerX is adjusted depending on referencePointX.
const int keyWidthHalfDiff = (keyWidth - getMostCommonKeyWidth()) / 2;
if (referencePointX < centerX - keyWidthHalfDiff) {
centerX -= keyWidthHalfDiff;
} else if (referencePointX > centerX + keyWidthHalfDiff) {
centerX += keyWidthHalfDiff;
} else {
centerX = referencePointX;
}
}
return centerX;
}
float ProximityInfo::getNormalizedSquaredDistanceFromCenterFloatG(
const int keyId, const int x, const int y, const float verticalScale) const {
const bool correctTouchPosition = hasTouchPositionCorrectionData();
const float centerX = static_cast<float>(correctTouchPosition ? getSweetSpotCenterXAt(keyId)
: getKeyCenterXOfKeyIdG(keyId));
const float visualKeyCenterY = static_cast<float>(getKeyCenterYOfKeyIdG(keyId));
float centerY;
if (correctTouchPosition) {
const float sweetSpotCenterY = static_cast<float>(getSweetSpotCenterYAt(keyId));
const float gapY = sweetSpotCenterY - visualKeyCenterY;
centerY = visualKeyCenterY + gapY * verticalScale;
} else {
centerY = visualKeyCenterY;
}
const float touchX = static_cast<float>(x);
const float touchY = static_cast<float>(y);
const float keyWidth = static_cast<float>(getMostCommonKeyWidth());
return ProximityInfoUtils::getSquaredDistanceFloat(centerX, centerY, touchX, touchY)
/ SQUARE_FLOAT(keyWidth);
}