CODEWITHSUNDEEP
c++qtcollision-detectionqgraphicsitemqpainterpath
Kian Ahrabian
Kian Ahrabian

Reputation: 921

QGraphicsItem Pixel Perfect Collision Detector

I want to implement a pixel perfect collision detector between two or more QGraphicsItem. The QGraphicsItem class provides a collision detector using QPainterPath objects, so now I want to load an image from file to a QPainterPath with only non-transparent pixels (make an accurate shape of non-transparent pixels), in this way I can use QGraphicsItem's own collision detector to implement a pixel perfect collision detector. I wanted to know if there is any way to do this trick??

Upvotes: 1

Views: 157

Answers (1)

Pramod Kumar
Pramod Kumar

Reputation: 96

You can use QGraphicsPixmapItem when using images with alpha channel. Use

QGraphicsPixmapItem::shapeMode(QGraphicsPixmapitem::MaskShape)

This extracts a mask based on alpha channel for creating shape.

Upvotes: 1

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