void EllipseObject::init(qreal centerX, qreal centerY, qreal width, qreal height, QRgb rgb, Qt::PenStyle lineType)
{
setData(OBJ_TYPE, type());
setData(OBJ_NAME, OBJ_NAME_ELLIPSE);
//WARNING: DO NOT enable QGraphicsItem::ItemIsMovable. If it is enabled,
//WARNING: and the item is double clicked, the scene will erratically move the item while zooming.
//WARNING: All movement has to be handled explicitly by us, not by the scene.
setFlag(QGraphicsItem::ItemIsSelectable, true);
setObjectSize(width, height);
setObjectCenter(centerX, centerY);
setObjectColor(rgb);
setObjectLineType(lineType);
setObjectLineWeight(0.35); //TODO: pass in proper lineweight
setPen(objectPen());
updatePath();
}
void EllipseObject::setObjectCenter(const QPointF& center)
{
setObjectCenter(center.x(), center.y());
}
void EllipseObject::updateRubber(QPainter* painter)
{
int rubberMode = objectRubberMode();
if(rubberMode == OBJ_RUBBER_ELLIPSE_LINE)
{
QPointF sceneLinePoint1 = objectRubberPoint("ELLIPSE_LINE_POINT1");
QPointF sceneLinePoint2 = objectRubberPoint("ELLIPSE_LINE_POINT2");
QPointF itemLinePoint1 = mapFromScene(sceneLinePoint1);
QPointF itemLinePoint2 = mapFromScene(sceneLinePoint2);
QLineF itemLine(itemLinePoint1, itemLinePoint2);
if(painter) painter->drawLine(itemLine);
updatePath();
}
else if(rubberMode == OBJ_RUBBER_ELLIPSE_MAJORDIAMETER_MINORRADIUS)
{
QPointF sceneAxis1Point1 = objectRubberPoint("ELLIPSE_AXIS1_POINT1");
QPointF sceneAxis1Point2 = objectRubberPoint("ELLIPSE_AXIS1_POINT2");
QPointF sceneCenterPoint = objectRubberPoint("ELLIPSE_CENTER");
QPointF sceneAxis2Point2 = objectRubberPoint("ELLIPSE_AXIS2_POINT2");
qreal ellipseWidth = objectRubberPoint("ELLIPSE_WIDTH").x();
qreal ellipseRot = objectRubberPoint("ELLIPSE_ROT").x();
//TODO: incorporate perpendicularDistance() into libcgeometry
qreal px = sceneAxis2Point2.x();
qreal py = sceneAxis2Point2.y();
qreal x1 = sceneAxis1Point1.x();
qreal y1 = sceneAxis1Point1.y();
QLineF line(sceneAxis1Point1, sceneAxis1Point2);
QLineF norm = line.normalVector();
qreal dx = px-x1;
qreal dy = py-y1;
norm.translate(dx, dy);
QPointF iPoint;
norm.intersect(line, &iPoint);
qreal ellipseHeight = QLineF(px, py, iPoint.x(), iPoint.y()).length()*2.0;
setObjectCenter(sceneCenterPoint);
setObjectSize(ellipseWidth, ellipseHeight);
setRotation(-ellipseRot);
QPointF itemCenterPoint = mapFromScene(sceneCenterPoint);
QPointF itemAxis2Point2 = mapFromScene(sceneAxis2Point2);
QLineF itemLine(itemCenterPoint, itemAxis2Point2);
if(painter) painter->drawLine(itemLine);
updatePath();
}
else if(rubberMode == OBJ_RUBBER_ELLIPSE_MAJORRADIUS_MINORRADIUS)
{
QPointF sceneAxis1Point2 = objectRubberPoint("ELLIPSE_AXIS1_POINT2");
QPointF sceneCenterPoint = objectRubberPoint("ELLIPSE_CENTER");
QPointF sceneAxis2Point2 = objectRubberPoint("ELLIPSE_AXIS2_POINT2");
qreal ellipseWidth = objectRubberPoint("ELLIPSE_WIDTH").x();
qreal ellipseRot = objectRubberPoint("ELLIPSE_ROT").x();
//TODO: incorporate perpendicularDistance() into libcgeometry
qreal px = sceneAxis2Point2.x();
qreal py = sceneAxis2Point2.y();
qreal x1 = sceneCenterPoint.x();
qreal y1 = sceneCenterPoint.y();
QLineF line(sceneCenterPoint, sceneAxis1Point2);
QLineF norm = line.normalVector();
qreal dx = px-x1;
qreal dy = py-y1;
norm.translate(dx, dy);
QPointF iPoint;
norm.intersect(line, &iPoint);
qreal ellipseHeight = QLineF(px, py, iPoint.x(), iPoint.y()).length()*2.0;
setObjectCenter(sceneCenterPoint);
setObjectSize(ellipseWidth, ellipseHeight);
setRotation(-ellipseRot);
QPointF itemCenterPoint = mapFromScene(sceneCenterPoint);
QPointF itemAxis2Point2 = mapFromScene(sceneAxis2Point2);
QLineF itemLine(itemCenterPoint, itemAxis2Point2);
if(painter) painter->drawLine(itemLine);
updatePath();
}
}
void CircleObject::setObjectCenter(const QPointF& center)
{
setObjectCenter(center.x(), center.y());
}
void CircleObject::updateRubber(QPainter* painter)
{
int rubberMode = objectRubberMode();
if(rubberMode == OBJ_RUBBER_CIRCLE_1P_RAD)
{
QPointF sceneCenterPoint = objectRubberPoint("CIRCLE_CENTER");
QPointF sceneQSnapPoint = objectRubberPoint("CIRCLE_RADIUS");
QPointF itemCenterPoint = mapFromScene(sceneCenterPoint);
QPointF itemQSnapPoint = mapFromScene(sceneQSnapPoint);
QLineF itemLine(itemCenterPoint, itemQSnapPoint);
setObjectCenter(sceneCenterPoint);
QLineF sceneLine(sceneCenterPoint, sceneQSnapPoint);
qreal radius = sceneLine.length();
setObjectRadius(radius);
if(painter) painter->drawLine(itemLine);
updatePath();
}
else if(rubberMode == OBJ_RUBBER_CIRCLE_1P_DIA)
{
QPointF sceneCenterPoint = objectRubberPoint("CIRCLE_CENTER");
QPointF sceneQSnapPoint = objectRubberPoint("CIRCLE_DIAMETER");
QPointF itemCenterPoint = mapFromScene(sceneCenterPoint);
QPointF itemQSnapPoint = mapFromScene(sceneQSnapPoint);
QLineF itemLine(itemCenterPoint, itemQSnapPoint);
setObjectCenter(sceneCenterPoint);
QLineF sceneLine(sceneCenterPoint, sceneQSnapPoint);
qreal diameter = sceneLine.length();
setObjectDiameter(diameter);
if(painter) painter->drawLine(itemLine);
updatePath();
}
else if(rubberMode == OBJ_RUBBER_CIRCLE_2P)
{
QPointF sceneTan1Point = objectRubberPoint("CIRCLE_TAN1");
QPointF sceneQSnapPoint = objectRubberPoint("CIRCLE_TAN2");
QLineF sceneLine(sceneTan1Point, sceneQSnapPoint);
setObjectCenter(sceneLine.pointAt(0.5));
qreal diameter = sceneLine.length();
setObjectDiameter(diameter);
updatePath();
}
else if(rubberMode == OBJ_RUBBER_CIRCLE_3P)
{
QPointF sceneTan1Point = objectRubberPoint("CIRCLE_TAN1");
QPointF sceneTan2Point = objectRubberPoint("CIRCLE_TAN2");
QPointF sceneTan3Point = objectRubberPoint("CIRCLE_TAN3");
double sceneCenterX;
double sceneCenterY;
getArcCenter(sceneTan1Point.x(), sceneTan1Point.y(),
sceneTan2Point.x(), sceneTan2Point.y(),
sceneTan3Point.x(), sceneTan3Point.y(),
&sceneCenterX, &sceneCenterY);
QPointF sceneCenterPoint(sceneCenterX, sceneCenterY);
QLineF sceneLine(sceneCenterPoint, sceneTan3Point);
setObjectCenter(sceneCenterPoint);
qreal radius = sceneLine.length();
setObjectRadius(radius);
updatePath();
}
}
void CircleObject::updateRubber(QPainter* painter)
{
int rubberMode = objectRubberMode();
if(rubberMode == OBJ_RUBBER_CIRCLE_1P_RAD)
{
QPointF sceneCenterPoint = objectRubberPoint("CIRCLE_CENTER");
QPointF sceneQSnapPoint = objectRubberPoint("CIRCLE_RADIUS");
QPointF itemCenterPoint = mapFromScene(sceneCenterPoint);
QPointF itemQSnapPoint = mapFromScene(sceneQSnapPoint);
QLineF itemLine(itemCenterPoint, itemQSnapPoint);
setObjectCenter(sceneCenterPoint);
QLineF sceneLine(sceneCenterPoint, sceneQSnapPoint);
qreal radius = sceneLine.length();
setObjectRadius(radius);
if(painter) drawRubberLine(itemLine, painter, VIEW_COLOR_CROSSHAIR);
updatePath();
}
else if(rubberMode == OBJ_RUBBER_CIRCLE_1P_DIA)
{
QPointF sceneCenterPoint = objectRubberPoint("CIRCLE_CENTER");
QPointF sceneQSnapPoint = objectRubberPoint("CIRCLE_DIAMETER");
QPointF itemCenterPoint = mapFromScene(sceneCenterPoint);
QPointF itemQSnapPoint = mapFromScene(sceneQSnapPoint);
QLineF itemLine(itemCenterPoint, itemQSnapPoint);
setObjectCenter(sceneCenterPoint);
QLineF sceneLine(sceneCenterPoint, sceneQSnapPoint);
qreal diameter = sceneLine.length();
setObjectDiameter(diameter);
if(painter) drawRubberLine(itemLine, painter, VIEW_COLOR_CROSSHAIR);
updatePath();
}
else if(rubberMode == OBJ_RUBBER_CIRCLE_2P)
{
QPointF sceneTan1Point = objectRubberPoint("CIRCLE_TAN1");
QPointF sceneQSnapPoint = objectRubberPoint("CIRCLE_TAN2");
QLineF sceneLine(sceneTan1Point, sceneQSnapPoint);
setObjectCenter(sceneLine.pointAt(0.5));
qreal diameter = sceneLine.length();
setObjectDiameter(diameter);
updatePath();
}
else if(rubberMode == OBJ_RUBBER_CIRCLE_3P)
{
QPointF sceneTan1Point = objectRubberPoint("CIRCLE_TAN1");
QPointF sceneTan2Point = objectRubberPoint("CIRCLE_TAN2");
QPointF sceneTan3Point = objectRubberPoint("CIRCLE_TAN3");
double sceneCenterX;
double sceneCenterY;
getArcCenter(sceneTan1Point.x(), sceneTan1Point.y(),
sceneTan2Point.x(), sceneTan2Point.y(),
sceneTan3Point.x(), sceneTan3Point.y(),
&sceneCenterX, &sceneCenterY);
QPointF sceneCenterPoint(sceneCenterX, sceneCenterY);
QLineF sceneLine(sceneCenterPoint, sceneTan3Point);
setObjectCenter(sceneCenterPoint);
qreal radius = sceneLine.length();
setObjectRadius(radius);
updatePath();
}
else if(rubberMode == OBJ_RUBBER_GRIP)
{
if(painter)
{
QPointF gripPoint = objectRubberPoint("GRIP_POINT");
if(gripPoint == objectCenter())
{
painter->drawEllipse(rect().translated(mapFromScene(objectRubberPoint(QString()))-mapFromScene(gripPoint)));
}
else
{
qreal gripRadius = QLineF(objectCenter(), objectRubberPoint(QString())).length();
painter->drawEllipse(QPointF(), gripRadius, gripRadius);
}
QLineF rubLine(mapFromScene(gripPoint), mapFromScene(objectRubberPoint(QString())));
drawRubberLine(rubLine, painter, VIEW_COLOR_CROSSHAIR);
}
}
}
