Angle of line graph

Hey guys,.

Is there a faster way to find the angle of one line graph other than the use of trigonometry?

Reminder: If I create a new line by using the add() method, this line should get a gradient starting point and end point (these are donated and used to create the first rhythm line). In order to use the right angle in the settings of gradients, I need to know the angle of the line graph. If I have to use trigonometry, I'd use geometricBounds namely the height/width of the bounding box, discover the departure and the arrival of my line (which I have) and thereby, determine which quadrant, the line crosses using the formula (sin, cos, tan) and finally convert radiant in degree. Phew, so if there is any way how he just read the angle of the line, tat would be cool.

Thank you

Frank

Hi Frank,.

I'll start by saying: I don't know if there is a way to do this, I couldn't find one in the API. The thing is that if you physically to draw a line in InDesign the angle in the interface is always zero. If you rotate the line by a certain number of degrees, it will be that number on the screen.

However, the math actually find the angle of a line are quite easy and fun.

var myLine = app.activeDocument.graphicLines.item(0).paths.item(0).entirePath;
var a = myLine[0][0] - myLine[1][0];
var b = myLine[1][1] - myLine[0][1];
var angleDeg = Math.atan2(a, b) * 180 / Math.PI;
$.writeln(angleDeg);

If you use this code it will calculate the actual angle between 2 points of the line where the direction of the line is:

down to 0 degrees

90 degrees left

up to 180 degrees

Right 90 degrees

Brett

Tags: InDesign

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