OBB (Oriented Bounding Box)
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wrote on 15 Apr 2017, 10:22 last edited by
is there any class in Qt for OBB?
I have checked QRectf but it seems that it is AABB (Axis aligned bounding box). Infact, I couldn't find any method in it for rotating it or setting angle in it.
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Hi,
Are you looking for QTransform ?
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wrote on 16 Apr 2017, 06:23 last edited by
I suppose it only transforms(rotates) the QRectf. What I really need is QRectf::intersect method. I seems to me it only works when two QRectf are aligned to the axies.
I have tested QGraphicsItem::collidesWithItem. it works finely with rotted objects. yet it is a graphic item, not a class for testing collision.
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I suppose it only transforms(rotates) the QRectf. What I really need is QRectf::intersect method. I seems to me it only works when two QRectf are aligned to the axies.
I have tested QGraphicsItem::collidesWithItem. it works finely with rotted objects. yet it is a graphic item, not a class for testing collision.
QRectandQRectFare normal rectangles, they can't be rotated as such.QTransformcan be used with them, but will give you again a normal rectangle (i.e. the bounding box of the operation). You can however apply the transformation to points (QPoint), lines (QLine), polygons (QPolygon) and paths (QPainterPath). You can get the intersection of polygons though (QPolygon::intersected).
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