accessing one coordinate of a vector?

EvanReese

I'm trying to use a triad manipulator to set 3 different length parameters (XY and Z coordinates). Since the base and offset of the triad are both simple vectors I'm not sure how to send the x value to the X length parameter. Is there a way to get one of the values out of a vector? Am I asking the right question? Manipulators in general are new to me too, so any info helps.

MBartlett21

@Evan_Reese

3d vectors in Onshape are just a simple array of three ValueWithUnits, meaning that you can get the x, y and z dimensions with vec[0], vec[1], and vec[2], respectively.

jon_sorrells

You can access the vector as an array to get the x, y, and z components.  Like myVector[0] to get the x component.

The Transform feature uses a triad manipulator, you can take a look at the transformManipulatorChange method in transformCopy.fs in the standard library.  I've copied the relevant portion here:

        const offset = input[TRANSLATION].offset;
        output.dx = offset[0];
        output.dy = offset[1];
        output.dz = offset[2];

You can also use the dot product, like dot(myVector, (vector(1, 0, 0))), which would get the x component of myVector.

MBartlett21

@Evan_Reese

3d vectors in Onshape are just a simple array of three ValueWithUnits, meaning that you can get the x, y and z dimensions with vec[0], vec[1], and vec[2], respectively.

jon_sorrells

You can access the vector as an array to get the x, y, and z components.  Like myVector[0] to get the x component.

The Transform feature uses a triad manipulator, you can take a look at the transformManipulatorChange method in transformCopy.fs in the standard library.  I've copied the relevant portion here:

        const offset = input[TRANSLATION].offset;
        output.dx = offset[0];
        output.dy = offset[1];
        output.dz = offset[2];

You can also use the dot product, like dot(myVector, (vector(1, 0, 0))), which would get the x component of myVector.

EvanReese

I'm really glad it's that simple. I thought that's what I'd tried but I must have not had it quite right. I've got it working now.