Calculating angle at mouse up event using C#

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I want to calculate the angle between the 1st and the final point while drawing something as soon as I lift the mouse in a WPF application in C#. How do I do it ?

Posted 2-May-13 21:18pm

rashesh231

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Solution 2

Technically there is no angle between two points (two points define a vector, you need two vectors to have an angle between). If you meant "I need the angle between the vector (x,0) (that is the 'horizontal line') and the vector defined by the two points" then the OriginalGriff's solution is the right one..

Posted 2-May-13 21:44pm

CPallini

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Accepted Answer · 2013-05-02T21:22:00

Solution 1

Handle the MouseDown event, and save the Loction.
Handle the MouseUp event, and get the new Location.
The angle is

C#

double angle = Math.Atan2(y1-y2,x1-x2);

Posted 2-May-13 21:22pm

OriginalGriff

Updated 2-May-13 21:47pm

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Calculating angle at mouse up event using C#

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Solution 1

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Calculating angle at mouse up event using C#

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