Unsolved Canvas Polyline in QML
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Hi
How to draw a polyline in QML canvas by dynamically adding points to the line path?
Thanks.
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Hi! You need to make multiple calls to
lineTo()
:ctx.beginPath() for (var i=0; i<pts.length-1; ++i) { ctx.moveTo(pts[i].x, pts[i].y) ctx.lineTo(pts[i+1].x, pts[i+1].y) } ctx.stroke()
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@Wieland
Can canvas be added as a Mapquickitem?
I am able to add the the canvas successfully on the map but it does not have the mapquickitem properties like onzoom and pan change etc. I am repainting the canvas onzoomlevelchanged , gesture.onPanStarted and gesture.onPanFinished. But the repaint is not so swift and so the lines can be seen not moving with the map. Is there a way to avoid this?
Note: I am trying to use canvas instead of mappolyline due to bad rendering of the latter and also to add curves to end lines.
Here is the video demonstrating my problem.
Thanks
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@saitej said in Canvas Polyline in QML:
Can canvas be added as a Mapquickitem?
The manual says:
The MapQuickItem type displays an arbitrary Qt Quick object on a Map.
Regarding the performance related things: I don't know.
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@Wieland
Thanks!! I will give it a shot.