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Fix sensor rotation in xml file #1158

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Merged
iakov merged 1 commit into from
Nov 5, 2020
Merged

Fix sensor rotation in xml file #1158

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36 changes: 19 additions & 17 deletions qrutils/graphicsUtils/rotater.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -122,41 +122,43 @@ void Rotater::calcResizeItem(QGraphicsSceneMouseEvent *event)
const qreal mouseX = event->scenePos().x() - masterCenter.x();
const qreal mouseY = event->scenePos().y() - masterCenter.y();

// Master rotation is signed angle between initial and mouse vector.
// Calculating it from theese vectors product and cosine theorem
const qreal vectorProduct = zeroRotationVector.x() * mouseY
- zeroRotationVector.y() * mouseX;
const qreal mouseVectorLength = sqrt(mouseX * mouseX + mouseY * mouseY);
if (mouseVectorLength < EPS) {
return;
}

// Master rotation is signed angle between initial and mouse vector.
// Calculating it from theese vectors product and cosine theorem
const qreal vectorProductLength = zeroRotationVector.x() * mouseY
- zeroRotationVector.y() * mouseX;
const qreal sin = vectorProductLength / (mouseVectorLength * mLength);

const qreal translationX = mouseX - zeroRotationVector.x();
const qreal translationY = mouseY - zeroRotationVector.y();
const qreal translation = translationX * translationX + translationY * translationY;

const qreal sin = vectorProduct / (mouseVectorLength * mLength);
const bool cosIsNegative = mouseVectorLength * mouseVectorLength + mLength * mLength < translation;
const bool cosIsNegative = mouseVectorLength * mouseVectorLength + mLength * mLength
< translationX * translationX + translationY * translationY;

const qreal angleInWrongQuarter = asin(sin);
const qreal littleAngle = cosIsNegative ? M_PI - angleInWrongQuarter : angleInWrongQuarter;
const qreal angleInRightQuarter = cosIsNegative ? M_PI - angleInWrongQuarter : angleInWrongQuarter;
const qreal littleAngle = angleInRightQuarter * 180 / M_PI;

const qreal masterAngleCompensation = mMaster->parentItem()
? mMaster->parentItem()->rotation()
: 0.0;

const qreal deltaAngle = fmod(littleAngle - mMaster->rotation() * M_PI / 180, 2 * M_PI);
const qreal addAngle = deltaAngle > M_PI ? -2 * M_PI : deltaAngle < -M_PI ? 2 * M_PI : 0;
const qreal angle = mMaster->rotation() * M_PI / 180 + deltaAngle + addAngle;
const qreal deltaAngle = fmod(littleAngle - mMaster->rotation()- masterAngleCompensation, 360);
const qreal addAngle = deltaAngle > 180 ? -360 : deltaAngle < -180 ? 360 : 0;
const qreal angle = mMaster->rotation() + deltaAngle + addAngle;

if (event->modifiers() & Qt::ShiftModifier) {
qreal roundedAngle = (angle - fmod(angle, M_PI_4));
if (qAbs(roundedAngle - angle) > qAbs(roundedAngle + M_PI_4 - angle)) {
roundedAngle += M_PI_4;
qreal roundedAngle = (angle - fmod(angle, 45));
qreal nextRoundedAngle = roundedAngle + (angle > 0 ? 45 : -45);
if (qAbs(roundedAngle - angle) > qAbs(nextRoundedAngle - angle)) {
roundedAngle = nextRoundedAngle;
}
mMaster->setRotation(roundedAngle * 180 / M_PI - masterAngleCompensation);
mMaster->setRotation(roundedAngle);
} else {
mMaster->setRotation(angle * 180 / M_PI - masterAngleCompensation);
mMaster->setRotation(angle);
}
}

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