| 50 | } |
| 51 | |
| 52 | QPolygonF UBGeometryUtils::lineToPolygon(const QLineF& pLine, const qreal& pWidth) |
| 53 | { |
| 54 | qreal x1 = pLine.x1(); |
| 55 | qreal y1 = pLine.y1(); |
| 56 | |
| 57 | qreal x2 = pLine.x2(); |
| 58 | qreal y2 = pLine.y2(); |
| 59 | |
| 60 | qreal alpha = (90.0 - pLine.angle()) * PI / 180.0; |
| 61 | qreal hypothenuse = pWidth / 2; |
| 62 | |
| 63 | // TODO UB 4.x PERF cache sin/cos table |
| 64 | qreal opposite = sin(alpha) * hypothenuse; |
| 65 | qreal adjacent = cos(alpha) * hypothenuse; |
| 66 | |
| 67 | QPointF p1a(x1 - adjacent, y1 - opposite); |
| 68 | QPointF p1b(x1 + adjacent, y1 + opposite); |
| 69 | |
| 70 | QPointF p2a(x2 - adjacent, y2 - opposite); |
| 71 | QPointF p2b(x2 + adjacent, y2 + opposite); |
| 72 | |
| 73 | QPainterPath painterPath; |
| 74 | |
| 75 | painterPath.moveTo(p1a); |
| 76 | painterPath.lineTo(p2a); |
| 77 | |
| 78 | painterPath.arcTo(x2 - hypothenuse, y2 - hypothenuse, pWidth, pWidth, (90.0 + pLine.angle()), -180.0); |
| 79 | |
| 80 | //painterPath.lineTo(p2b); |
| 81 | painterPath.lineTo(p1b); |
| 82 | |
| 83 | painterPath.arcTo(x1 - hypothenuse, y1 - hypothenuse, pWidth, pWidth, -1 * (90.0 - pLine.angle()), -180.0); |
| 84 | |
| 85 | painterPath.closeSubpath(); |
| 86 | |
| 87 | return painterPath.toFillPolygon(); |
| 88 | } |
| 89 | |
| 90 | |
| 91 | |