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Add tool to measure angles #8

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ivmartel opened this issue Jan 23, 2012 · 4 comments
Closed

Add tool to measure angles #8

ivmartel opened this issue Jan 23, 2012 · 4 comments
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enhancement New feature or request
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0.9.0

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@ghost ghost assigned ivmartel Jan 23, 2012
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ivmartel commented Jul 9, 2013

Moved from milestone 0.4.0 to future...

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ivmartel commented Jul 9, 2013

Moved from milestone future to 0.5.0...

@ivmartel ivmartel modified the milestones: Future, 0.7.0 Mar 16, 2014
@ivmartel ivmartel modified the milestones: 0.9.0, Future Jan 21, 2015
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The english name is protractor. The formula to get the angle between two lines is given in http://planetmath.org/anglebetweentwolines.

ivmartel added a commit that referenced this issue Jan 24, 2015
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Added an arc to the protractor shape. Revised angle calculation. Relates
ccf863f 
to #8.
ivmartel added a commit that referenced this issue Jan 24, 2015
@ivmartel
Fix moving mid point. Relates to #8.
9292e2a
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Revised to use the formula of this post: http://stackoverflow.com/questions/14066933/direct-way-of-computing-clockwise-angle-between-2-vectors/16544330#16544330

About atan and atan2: http://stackoverflow.com/questions/283406/what-is-the-difference-between-atan-and-atan2-in-c

ivmartel added a commit that referenced this issue Jan 26, 2015
@ivmartel
Fix arc position after drag. Relates to #8.
0cab5c4
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