insilmaril@650: #ifndef GEOMETRY_H
insilmaril@650: #define GEOMETRY_H
insilmaril@650: 
insilmaril@656: #include <QPointF>
insilmaril@650: #include <QRectF>
insilmaril@656: #include <QPolygonF>
insilmaril@650: 
insilmaril@650: QRectF addBBox(QRectF r1, QRectF r2);
insilmaril@650: bool inBox(const QPointF &p, const QRectF &box);
insilmaril@650: 
insilmaril@656: QPointF normalize (const QPointF &p);
insilmaril@650: 
insilmaril@662: 
insilmaril@662: qreal dotProduct (const QPointF &a, const QPointF &b);
insilmaril@662: 
insilmaril@662: class PolygonCollisionResult {
insilmaril@662: public:
insilmaril@662:     // Are the polygons going to intersect forward in time?
insilmaril@662:     bool willIntersect;
insilmaril@662: 
insilmaril@662:     // Are the polygons currently intersecting?
insilmaril@662:     bool intersect;
insilmaril@662: 
insilmaril@662:     // The translation to apply to the first polygon to push the polygons apart.
insilmaril@662:     QPointF minTranslation;
insilmaril@662: };
insilmaril@662: 
insilmaril@662: 
insilmaril@662: void ProjectPolygon(QPointF axis, QPolygonF polygon, qreal &min, qreal &max) ;
insilmaril@662: qreal intervalDistance(qreal minA, qreal maxA, qreal minB, qreal maxB);
insilmaril@662: PolygonCollisionResult PolygonCollision(QPolygonF polygonA, 
insilmaril@662:                               QPolygonF polygonB, QPointF velocity);
insilmaril@662: 
insilmaril@650: #endif