util qcad functions

[sarlaa]

Hi,

Can you tell me if in qcad exists functions for :

-Get the fusion of 2 lines ?
-check if a point is included in a shape ? (can be on shape lines or inside)
-Check if a line is included in a shape ? (can be on shape lines or inside)

And give me example of use if it exists.

Thanks.

[andrew]

-Get the fusion of 2 lines ?

Please elaborate. Do you want to create a polyline? Do you want to combine two line segments into one line? ...?

-check if a point is included in a shape ? (can be on shape lines or inside)

For a polyline, you can use RPolyline::contains:

Code: Select all

polyline.contains(point, true, tolerance);

Second parameter is true to count points on the polyline as being 'inside'.

-Check if a line is included in a shape ? (can be on shape lines or inside)

You can use RPolyline::containsShape:

Code: Select all

polyline.containsShape(shape);

Note that this excludes shapes on the polyline. These cases would have to be handled separately.

[sarlaa]

Thanks it's useful.

For my first point (fusion of 2 lines), in fact I want to combine two line segments into one line.

[andrew]

For my first point (fusion of 2 lines), in fact I want to combine two line segments into one line.

OK. There is no special function for this in the QCAD API.

[sarlaa]

Ok.

for checking if polyline contains point I tried :

Code: Select all

 var plItem = new RPolyline();
  var pointsItem = [new RVector(0,20), new RVector(20,20), new RVector(20,0), new RVector(0,0)] 
  plItem.setVertices(pointsItem);

  var point = new RVector(10,10)
  var check = plItem.contains(point, true); //check is false

I get false, is there something I do wrong ?

[sarlaa]

I see my error had to do :

Code: Select all

var pointsItem = [new RVector(0,20), new RVector(20,20), new RVector(20,0), new RVector(0,0), new RVector(0,20)] 

It works. Thanks