error: aggregate 'QPainterPath path' has incomplete type and cannot be defined
Solved
General and Desktop
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Is there anything that should i include my .pro file for using QPainter?
I got this error. And also this :
error: variable has incomplete type 'QPainterPath'#include "artificialhorizon.h" #include <QPainter> #include <QDebug> #include <cmath> ArtificialHorizon::ArtificialHorizon(QQuickItem *parent) : QQuickPaintedItem(parent), m_roll(0), m_pitch(0), m_pitchScale(25.0), m_skyColor("#2977ef"), m_groundColor("#884600") { } void ArtificialHorizon::paint(QPainter *p) { qreal width = boundingRect().width(); qreal height = boundingRect().height(); qreal w2 = width / 2; qreal h2 = height / 2; const int pitchCutOff = 35; p->translate(w2, h2); p->translate(0, 10); qreal ovlpitch = m_pitch; // TODO wrap360 //! [horizon] qreal radius = h2 - 10; drawHorizon(p, ovlpitch, w2, radius); p->setPen(QPen(Qt::white, 2)); qreal alpha = std::asin((radius - pitchCutOff) / radius); p->drawLine(QPointF(-radius * std::cos(alpha) + 5, radius - pitchCutOff), QPointF(radius * std::cos(alpha) - 5, radius - pitchCutOff)); p->drawLine(QPointF(-radius * std::cos(alpha) + 5, -radius + pitchCutOff), QPointF(radius * std::cos(alpha) - 5, -radius + pitchCutOff)); //! [horizon] //! [marks] p->save(); p->setClipRect(-radius, -radius + pitchCutOff, radius * 2, (radius - pitchCutOff) * 2); drawMarks(p, radius, ovlpitch, pitchCutOff); p->restore(); //! [marks] //! [zero marks] auto zeroMark = [p, w2]() { p->drawLine(QPointF(w2 - 10, 0), QPointF(w2 - 50, 0)); p->drawLine(QPointF(w2 - 50, 0), QPointF(w2- 50, 12)); }; p->setPen(QPen(Qt::yellow, 8)); zeroMark(); p->setPen(QPen(Qt::black, 4)); zeroMark(); p->scale(-1, 1); p->setPen(QPen(Qt::yellow, 8)); zeroMark(); p->setPen(QPen(Qt::black, 4)); zeroMark(); p->scale(-1, 1); p->fillRect(-5, -5, 10, 10, Qt::yellow); p->fillRect(-3, -3, 6, 6, Qt::black); //! [zero marks] //! [roll marks] p->setPen(QPen(Qt::yellow, 2)); p->drawLine(QPointF(0, -radius), QPointF(13, -radius + 26)); p->drawLine(QPointF(0, -radius), QPointF(-13, -radius + 26)); p->drawLine(QPointF(-13, -radius + 26), QPointF(13, -radius + 26)); p->drawLine(QPointF(-8, -radius + 16), QPointF(8, -radius + 16)); p->rotate(m_roll); p->drawLine(QPointF(0, -radius), QPointF(-5, -radius - 10)); p->drawLine(QPointF(0, -radius), QPointF(5, -radius - 10)); p->drawLine(QPointF(-5, -radius - 10), QPointF(5, -radius - 10)); p->setPen(QPen(Qt::white, 2)); p->drawArc(QRectF(-radius, -radius, radius * 2, radius * 2), 45 * 16, 90 * 16); p->rotate(-45); for (int i = -45; i <= 45; i += 5, p->rotate(5)) { if (!((i % 45 == 0) || (i % 10 == 0))) continue; if (i % 40 == 0) continue; p->drawLine(QPointF(0, -radius), QPointF(0, -radius - 10)); } //! [roll marks] } void ArtificialHorizon::drawHorizon(QPainter *p, qreal ovlpitch, qreal w2, qreal h2) { qreal scpitch = ovlpitch; if (scpitch > (180 - m_pitchScale)) scpitch -= 180; if (scpitch < -(180 - m_pitchScale)) scpitch += 180; qreal h = -scpitch / m_pitchScale * h2; p->rotate(-m_roll); p->setPen(Qt::NoPen); p->setRenderHint(QPainter::Antialiasing, true); if ((scpitch > m_pitchScale) || (scpitch < -m_pitchScale)) { p->setBrush(ovlpitch > m_pitchScale ? m_skyColor : m_groundColor); QPainterPath path; path.arcTo(QRectF(-h2, -h2, h2 * 2, h2 * 2), 0, 16 * 360); p->drawPath(path); } else { qreal alpha = std::asin(h / h2); p->setBrush((ovlpitch > 150 || ovlpitch < -150) ? m_groundColor : m_skyColor); QPainterPath path; path.moveTo(0, -h); path.arcTo(QRectF(-h2, -h2, h2 * 2, h2 * 2), alpha / M_PI * 180, 180 - 2 * alpha / M_PI * 180); p->drawPath(path); p->setBrush((ovlpitch > 150 || ovlpitch < -150) ? m_skyColor : m_groundColor); path = QPainterPath(); path.moveTo(0, -h); path.arcTo(QRectF(-h2, -h2, h2 * 2, h2 * 2), alpha / M_PI * 180, -180 - 2 * alpha / M_PI * 180); p->drawPath(path); p->setPen(QPen(Qt::white, 2)); p->drawLine(QPointF(-h2 * std::cos(alpha) + 1, -h), QPointF(h2 * std::cos(alpha) - 1, -h)); } p->rotate(m_roll); } void ArtificialHorizon::drawMarks(QPainter *p, qreal radius, qreal ovlpitch, int pitchCutOff) { qreal pxPerDegree = radius / m_pitchScale; qreal dp = ovlpitch + m_pitchScale - pitchCutOff / pxPerDegree; qreal pitchMax = std::ceil(dp / 2.5) * 2.5; qreal ymax = ovlpitch * pxPerDegree - pitchMax * pxPerDegree; auto markWidth = [](qreal pitch) -> qreal{ if (fmod(pitch, 10) == 0.0) return 28; if (fmod(pitch, 5.0) == 0.0) return 14; return 8; // 2.5 }; int textHeight2 = p->fontMetrics().tightBoundingRect("1").height() / 2; for (qreal y = ymax, pitch = pitchMax; y <= radius - pitchCutOff + pxPerDegree * 2.5; y += 2.5 * pxPerDegree, pitch -= 2.5) { if (pitch == 180 || pitch == 0 || pitch == -180) continue; qreal width = markWidth(pitch); p->drawLine(QPointF(-width, y), QPointF(width, y)); qreal pp = std::fabs(pitch); if (pp > 180) pp -= 360; if (fmod(pp, 10) == 0) { QString label = QString("%1").arg(pp); int textWidth = p->fontMetrics().width(label); p->drawText(QPointF(-width - textWidth - 5, y + textHeight2), label); p->drawText(QPointF(width + 5, y + textHeight2), label); } } } double ArtificialHorizon::roll() const { return m_roll; } void ArtificialHorizon::setRoll(double roll) { m_roll = roll; update(); emit rollChanged(); } double ArtificialHorizon::pitch() const { return m_pitch; } void ArtificialHorizon::setPitch(double pitch) { m_pitch = pitch; update(); emit pitchChanged(); } double ArtificialHorizon::pitchScale() const { return m_pitchScale; } void ArtificialHorizon::setPitchScale(double pitchScale) { m_pitchScale = pitchScale; update(); } -
include <QPainterPath> may be missing. Just add it.
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include <QPainterPath> may be missing. Just add it.
@dheerendra It works. Thank you!
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@dheerendra said in error: aggregate 'QPainterPath path' has incomplete type and cannot be defined:
include <QPainterPath> may be missing. Just add it.
got the same bug，debug it by add “ include <QPainterPath> ”
