static void transmitted(Worklet *base) {
auto packet = frg::container_of(base, &AcceptBase::worklet);
packet->callback(packet->error(), packet->lane());
}
void CFreewayView::OnDraw(CDC* pDC)
{
CFreewayDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
if (!pDoc)
return;
CRect rect;
GetClientRect(&rect);
// [pixel]
const CSize carBoxSize(28, 8);
const CSize carMargin(4, 0);
const CSize carSize = carBoxSize - carMargin -carMargin;
const double pixelPerMeter = carBoxSize.cx/m_simulation.m_carLength.m_val;
const int roadMargin = 10;
const int laneMargin = 2;
const int laneHeight = carBoxSize.cy + 2*laneMargin;
const int sectorWidth = (int)(m_simulation.SectorLen().m_val*pixelPerMeter);
const int roadHeight = (1 + laneHeight)*m_simulation.nLanes() + 2*roadMargin + 1;
// [Sectors]
const int w = rect.Width()/sectorWidth; if (w == 0) return;
const int h = (m_simulation.nSectors() + w - 1)/w;
// [m]
const Meters wDist = w*m_simulation.SectorLen();
// [pixel]
const int laneWidth = w*sectorWidth + carBoxSize.cx;
// colors
const COLORREF roadColor = RGB(180, 180, 180);
const COLORREF siteColor = RGB(60, 60, 60);
const COLORREF marginColor = RGB(255, 255, 255);
CPen border(PS_SOLID, 1, RGB(0, 0, 0));
CPen middle(PS_DASH, 1, RGB(0, 0, 0));
CBrush roadBrush(roadColor);
LOGBRUSH logBrush;
logBrush.lbStyle = BS_SOLID;
logBrush.lbColor = roadColor;
CPen lane(PS_SOLID | PS_GEOMETRIC | PS_ENDCAP_FLAT, laneHeight, &logBrush);
logBrush.lbColor = siteColor;
CPen construction(PS_SOLID | PS_GEOMETRIC | PS_ENDCAP_FLAT, laneHeight, &logBrush);
logBrush.lbColor = marginColor;
CPen noRoad(PS_SOLID | PS_GEOMETRIC | PS_ENDCAP_FLAT, laneHeight, &logBrush);
int y = roadMargin;
int SectorOffset = 0;
SectorInfo si(0, 0);
// draw road
pDC->SetBkColor(roadColor);
for (int i = 0; i < h; i++) {
pDC->SelectObject(&border);
pDC->MoveTo(0, y);
pDC->LineTo(laneWidth, y);
y++;
for (int l = m_simulation.nLanes() - 1; l >= 0; l--) {
si.m_lane = l;
pDC->SelectObject(&lane);
int y2 = y + laneHeight/2;
pDC->MoveTo(0, y2);
pDC->LineTo(laneWidth, y2);
for (int j = 0; j < w; j++) {
si.m_sectorNr = SectorOffset + j;
if (si.m_sectorNr < m_simulation.nSectors()) {
if (m_simulation.isClosed(si)) {
pDC->SelectObject(&construction);
pDC->MoveTo(j*sectorWidth, y2);
if (j == w - 1) {
pDC->LineTo(laneWidth, y2);
} else {
pDC->LineTo((j+1)*sectorWidth, y2);
}
}
} else {
pDC->SelectObject(noRoad);
pDC->MoveTo(j*sectorWidth + carBoxSize.cx, y2);
pDC->LineTo(laneWidth, y2);
}
}
y += laneHeight;
if (l > 0) {
pDC->SelectObject(&middle);
pDC->MoveTo(0, y);
pDC->LineTo(laneWidth, y);
y++;
}
}
pDC->SelectObject(&border);
pDC->MoveTo(0, y);
pDC->LineTo(laneWidth, y);
y += 2*roadMargin + 1;
SectorOffset += w;
}
// draw cars
auto& it = m_simulation.m_cars.begin();
while (it != m_simulation.m_cars.end()) {
const Car& car = *it->get();
const Position& position = car.getPosition();
const div_t qr = div((int)(position.m_pos.m_val*pixelPerMeter), (int)(wDist.m_val*pixelPerMeter));
const int y = qr.quot*roadHeight + roadMargin + (m_simulation.nLanes() - car.getLane() - 1)*(laneHeight + 1) + 1 + laneMargin;
const CRect carRect(CPoint(qr.rem, y) + carMargin, carSize);
CBrush carBrush(car.getColor());
pDC->FillRect(carRect, &carBrush);
it++;
}
}
