1 Correct answer
This only works with CS5 as it now uses the ruler tool instead of a path. But it fixes all the issues talked about in this thread and well as some other differences between the original funciton and the data in the info panel.
It returns a custom object with angle and length properties if there is a ruler tool line in the active document and undefined it not. I was unsure if the length should be a unitValue or a number in the ruler units settings. I went with number because the info panel has dif
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Some boiler plate to make measurement pixel and insure a document open and catch no path the action look like this
// enable double-clicking from Mac Finder or Windows Explorer
#target photoshop // this command only works in Photoshop CS2 and higher
// bring application forward for double-click events
app.bringToFront();
// ensure at least one document open
if (!documents.length) alert('There are no documents open.', 'No Document');
else {
main(); // at least one document exists proceed
}
///////////////////////////////////////////////////////////////////////////////
// main function //
///////////////////////////////////////////////////////////////////////////////
function main() {
// declare local variables
var orig_ruler_units = app.preferences.rulerUnits;
app.preferences.rulerUnits = Units.PIXELS; // Set the ruler units to PIXELS
try { alert(measureLine(app.activeDocument.pathItems.getByName("Work Path"))); }
// display error message if something goes wrong
catch(e) { alert(e + ': on line ' + e.line, 'Script Error', true); }
app.preferences.rulerUnits = orig_ruler_units; // Reset units to original settings
}
///////////////////////////////////////////////////////////////////////////////
// main function end //
///////////////////////////////////////////////////////////////////////////////
//the code below is for the Line tool.
function measureLine(path){
var res = new Array;
var lineStart = path.subPathItems[0].pathPoints[0].anchor;
var lineEnd = path.subPathItems[0].pathPoints[3].anchor;
var a = Math.max(lineStart[0],lineEnd[0])-Math.min(lineStart[0],lineEnd[0]);
var o = Math.max(lineStart[1],lineEnd[1])-Math.min(lineStart[1],lineEnd[1]);
var c = Math.round(Math.sqrt((a*a)+(o*o)));
res.push(c);
var ang = (180/Math.PI) * Math.atan2(o,a);
if(lineStart[1] < lineEnd[1]){//negative angle
ang = -ang;
};
res.push(ang);
return res;
}
Michael L Hale wrote:
Sorry maybe I wasn't clear. If you want the angle reported by the script to match what would be reported if the user used the line tool you do need to make the path left to right.
That would only be half right as you can use the ruler measure tool from left to right and right to left a full 360 the angles reported will be in the range of 0 to +|-180 if you limit it to left to right the angle range will be from +90 to -90.
I understand your statement for "var ang = (180/Math.PI) * Math.atan2(o,a);" will only generate the angle for a right triangle 0 through 90. That is why I wrote the sign was an indication of direction meaning up or down but the problem is that there are two -45 and two +45 the other directiom left or right is only known by the line tool user. I do not understand path points you use lineStart[1] < lineEnd[1]to find out up or down perhaps some other comparison can find out left or right and then adjust the angle if to the right by to the range from +|-90 to +|-180.
I think I did it now matches the line tool left to right or right to left the angle now matches the ruler measure tool when ruler unites is set to pixels
// enable double-clicking from Mac Finder or Windows Explorer
#target photoshop // this command only works in Photoshop CS2 and higher
// bring application forward for double-click events
app.bringToFront();
// ensure at least one document open
if (!documents.length) alert('There are no documents open.', 'No Document');
else {
main(); // at least one document exists proceed
}
///////////////////////////////////////////////////////////////////////////////
// main function //
///////////////////////////////////////////////////////////////////////////////
function main() {
// declare local variables
var orig_ruler_units = app.preferences.rulerUnits;
app.preferences.rulerUnits = Units.PIXELS; // Set the ruler units to PIXELS
try { alert(measureLine(app.activeDocument.pathItems.getByName("Work Path"))); }
// display error message if something goes wrong
catch(e) { alert(e + ': on line ' + e.line, 'Script Error', true); }
app.preferences.rulerUnits = orig_ruler_units; // Reset units to original settings
}
///////////////////////////////////////////////////////////////////////////////
// main function end //
///////////////////////////////////////////////////////////////////////////////
//the code below is for the Line tool.
function measureLine(path){
var res = new Array;
var lineStart = path.subPathItems[0].pathPoints[0].anchor;
var lineEnd = path.subPathItems[0].pathPoints[3].anchor;
var a = Math.max(lineStart[0],lineEnd[0])-Math.min(lineStart[0],lineEnd[0]);
var o = Math.max(lineStart[1],lineEnd[1])-Math.min(lineStart[1],lineEnd[1]);
var c = Math.round(Math.sqrt((a*a)+(o*o)));
//alert("Triangle Height = " + o + " Width = " + a + " Hypotenuse = " + c );
res.push(c);
var ang = (180/Math.PI) * Math.atan2(o,a);
if(lineStart[0] > lineEnd[0]){//To the left
ang = 180-ang;
};
if(lineStart[1] < lineEnd[1]){//Down
ang = -ang;
};
res.push(ang);
return res;
}
Message was edited by: JJMack
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