/**
* \return List of splines which approximate the given arc.
*/
QList<RSpline> RSpline::createSplinesFromArc(const RArc& arc) {
RArc a = arc;
if (a.isReversed()) {
a.reverse();
}
double startAngle = RMath::getNormalizedAngle(a.getStartAngle());
double endAngle = RMath::getNormalizedAngle(a.getEndAngle());
if (a.isFullCircle()) {
startAngle = 0.0;
endAngle = 2*M_PI;
}
// normalize startAngle, endAngle to [-2PI, 2PI]
double twoPI = M_PI * 2;
//double startAngle = RMath::getNormalizedAngle(a.getStartAngle());
//double endAngle = RMath::getNormalizedAngle(a.getEndAngle());
if (startAngle>endAngle) {
startAngle-=2*M_PI;
}
double radius = a.getRadius();
double EPSILON = 0.00001;
// Compute the sequence of arc curves, up to PI/2 at a time. Total arc angle
// is less than 2PI.
QList<RSpline> curves;
double piOverTwo = M_PI_2;
double segmentationAngle = piOverTwo/4;
//double segmentationAngle = M_PI/8;
double sgn = (startAngle < endAngle) ? +1 : -1;
double a1 = startAngle;
for (double totalAngle = qMin(twoPI, qAbs(endAngle - startAngle)); totalAngle > EPSILON; ) {
double a2 = a1 + sgn * qMin(totalAngle, segmentationAngle);
RSpline sp = RSpline::createBezierFromSmallArc(radius, a1, a2);
sp.move(a.getCenter());
curves.append(sp);
totalAngle -= qAbs(a2 - a1);
a1 = a2;
}
return curves;
}
void RExporter::exportSpline(const RSpline& spline, double offset) {
RLinetypePattern p = getLinetypePattern();
bool continuous = false;
if (getEntity() == NULL || !p.isValid() || p.getNumDashes() == 1 || draftMode || screenBasedLinetypes) {
continuous = true;
}
if (!continuous) {
p.scale(getPatternFactor());
if (RMath::isNaN(offset)) {
double length = spline.getLength();
offset = getPatternOffset(length, p);
}
exportExplodable(spline, offset);
}
else {
// version <= 3.0.0 was (line interpolation):
//exportExplodable(spline, offset);
// performance improvement (using real splines):
RPainterPath pp;
pp.setPen(QPen(Qt::SolidLine));
pp.addSpline(spline);
exportPainterPaths(QList<RPainterPath>() << pp);
}
/*
RLinetypePattern p = getLinetypePattern();
p.scale(getPatternFactor());
if (RMath::isNaN(offset)) {
double length = spline.getLength();
offset = getPatternOffset(length, p);
}
double currentOffset = offset;
QList<QSharedPointer<RShape> > sub = spline.getExploded();
QList<QSharedPointer<RShape> >::iterator it;
for (it=sub.begin(); it!=sub.end(); ++it) {
QSharedPointer<RLine> line = (*it).dynamicCast<RLine>();
if (!line.isNull()) {
exportLine(*line.data(), currentOffset);
currentOffset -= line->getLength();
}
QSharedPointer<RArc> arc = (*it).dynamicCast<RArc>();
if (!arc.isNull()) {
exportArc(*arc.data(), currentOffset);
currentOffset -= arc->getLength();
}
}
*/
}
void RExporter::exportSpline(const RSpline& spline, double offset) {
RLinetypePattern p = getLinetypePattern();
bool continuous = false;
if (getEntity() == NULL || !p.isValid() || p.getNumDashes() <= 1 || draftMode || screenBasedLinetypes || twoColorSelectedMode) {
continuous = true;
}
p.scale(getLineTypePatternScale(p));
double patternLength = p.getPatternLength();
if (patternLength<RS::PointTolerance || spline.getLength() / patternLength > RSettings::getDashThreshold()) {
continuous = true;
}
if (!continuous) {
if (getEntity()!=NULL && (getEntity()->getType()!=RS::EntitySpline || RSpline::hasProxy())) {
// we have a spline proxy:
RShapesExporter(*this, QList<QSharedPointer<RShape> >() << QSharedPointer<RShape>(spline.clone()), offset);
}
else {
// fallback if we don't have a spline proxy:
p.scale(getLineTypePatternScale(p));
if (RMath::isNaN(offset)) {
double length = spline.getLength();
offset = p.getPatternOffset(length);
}
exportExplodable(spline, offset);
}
}
else {
// version <= 3.0.0 was (line interpolation):
//exportExplodable(spline, offset);
// performance improvement (using real splines):
RPainterPath pp;
pp.setPen(currentPen);
pp.setInheritPen(true);
pp.addSpline(spline);
exportPainterPaths(QList<RPainterPath>() << pp);
}
/*
RLinetypePattern p = getLinetypePattern();
p.scale(getLineTypePatternScale(p));
if (RMath::isNaN(offset)) {
double length = spline.getLength();
offset = p.getPatternOffset(length);
}
double currentOffset = offset;
QList<QSharedPointer<RShape> > sub = spline.getExploded();
QList<QSharedPointer<RShape> >::iterator it;
for (it=sub.begin(); it!=sub.end(); ++it) {
QSharedPointer<RLine> line = (*it).dynamicCast<RLine>();
if (!line.isNull()) {
exportLine(*line.data(), currentOffset);
currentOffset -= line->getLength();
}
QSharedPointer<RArc> arc = (*it).dynamicCast<RArc>();
if (!arc.isNull()) {
exportArc(*arc.data(), currentOffset);
currentOffset -= arc->getLength();
}
}
*/
}
void REcmaHelper::fromScriptValue(QScriptEngine* engine, QScriptValue scriptValue, QList<QSharedPointer<RShape> >& cppValue) {
QVariantList variantList = engine->fromScriptValue<QVariantList>(scriptValue);
for (int i = 0; i < variantList.size(); ++i) {
QVariant v = variantList.at(i);
QSharedPointer<RShape> pShape = v.value<QSharedPointer<RShape> >();
if (!pShape.isNull()) {
cppValue.append(pShape);
}
else {
RShape* shape = v.value<RShape*>();
if (shape!=NULL) {
QSharedPointer<RShape> pShape(shape->clone());
cppValue.append(pShape);
}
else if (v.canConvert<RArc>()) {
RArc obj = v.value<RArc>();
QSharedPointer<RArc> p(obj.clone());
cppValue.append(p);
}
else if (v.canConvert<RCircle>()) {
RCircle obj = v.value<RCircle>();
QSharedPointer<RCircle> p(obj.clone());
cppValue.append(p);
}
else if (v.canConvert<RLine>()) {
RLine obj = v.value<RLine>();
QSharedPointer<RLine> p(obj.clone());
cppValue.append(p);
}
else if (v.canConvert<RPoint>()) {
RPoint obj = v.value<RPoint>();
QSharedPointer<RPoint> p(obj.clone());
cppValue.append(p);
}
else if (v.canConvert<RPolyline>()) {
RPolyline obj = v.value<RPolyline>();
QSharedPointer<RPolyline> p(obj.clone());
cppValue.append(p);
}
else if (v.canConvert<RSpline>()) {
RSpline obj = v.value<RSpline>();
QSharedPointer<RSpline> p(obj.clone());
cppValue.append(p);
}
else if (v.canConvert<RTextLabel>()) {
RTextLabel obj = v.value<RTextLabel>();
QSharedPointer<RTextLabel> p(obj.clone());
cppValue.append(p);
}
else if (v.canConvert<RTriangle>()) {
RTriangle obj = v.value<RTriangle>();
QSharedPointer<RTriangle> p(obj.clone());
cppValue.append(p);
}
}
}
}
