html5 - Get Line co-ordinates in Javascript -



html5 - Get Line co-ordinates in Javascript -

i drawing lines using canvas (html 5), since lines/shapes not stored objects in canvas, cannot attach unique events (eg onmouseclick)

i wish attach onmouseover event line, possible getting know if mouse if on particular line (using 2 x , 2 y co-ordinates) in canvas using javascript. work different line widths (eg: 2,5 pixels)

want avoid using svg entire project built on canvas

please advice

you need utilize math formulas calculate area of line , whether point intersects it.

here's basic example:

find mouse coordinates relative position of canvas (how find mouse pos on element) calculate whether mouse x/y within rectangle (point in rectangle formula) done.

javascript html5 javascript-events canvas

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