Fix trim command for use with boxes, arcs, circles, etc

[bdeck]

As best I can tell, the trim command ("E") has not worked properly since version 15.3

When used to trim a line against a box, arc, circle, etc, it will routinely trim to the wrong segment.

In V 15 it would try to trim to a point near the second point set by the user.

This funtionality should be restored.

BD

PS: Due to possible effects of some unnamed hallucinogenic, the above post is in error with respect to boxes. It appears I have insufficient cerebral capacity for the number of DC versions on my system. mea culpa.

[Dempsey]

I click on the portion of the line I want to keep, and reasonably close to the intersection line. Never had a problem with that approach.

[Pearco]

Guys;

When trimming a line, be aware of the trim short end box. This makes a difference.

[bdeck]

When trimming a line, be aware of the trim short end box. This makes a difference.

It makes a difference, but it doesn't help. See attached.

BD

[Dr PR]

BD,

Have you tried reversing points in the line to be "trimmed to" (the line that is not changed) to see if it effects the trim point?

There may be a broader problem here. The Intersect 2 command now occasionally picks the most distant segment to intersect with instead of the closest. This is especially true with intersects of a line and circle. This is new, and was introduced with the efforts to improve Intersect 2.

[MikeAller]

BD,
Unless I'm missing your point, I think that the box, the zigzag line, and the arc of the circle are intities that are continuous lines and that the intersecting line is cut off at the "FIRST"(or nearest)  point of intersection.  In the case of the arc, DC is recognizing the circle as being there! ....it's a possibility. Right?  Mike

[bdeck]

Hi Mike,

You miss my point.

We are all perfectly capable of hacking around this defect. But that's what we pay IMSI to do.

I use the trim command on nearly every line I draw.

On half of those I must first use the extend command ( a nice command, but not if you have to use it on every line) in order to get the endpoint in the right area. On others, I have to construct temporary place holders, and trim to those.

The first two letters in CAD stand for "Computer-assisted", not "human-assisted."

DC should be smart enough to figure this out without my help.

BD

[MikeAller]

I totally agree!!!!
Mike

[Dempsey]

Okay folks, I reported it as problem 67.

[DrollTroll]

I see your point regarding trimming to arcs and circles, and it's a fair one. DesignCAD should be smart enough to pick the intersection that is closer to the selected point on the arc.

As for the other trims -- that should be controlled by the new "Trim picked segments only" field.

"Why does it even work this way at all?" you cry. Consider an arc that has been vector converted. You want to trim off the end of this arc where it overlaps another line segment. In previous versions you had to zoooooooooom in on the arc-vector to find the exact segment that crossed the other line, and pick that as your trim segment. Now, with the appropriate options set, you just click anywhere on the arc-vector and trimming line, and Bob's your uncle.

[bdeck]

Hi DT,

I must have been under the influence of some powerfull hallucinogen when I posted.

The newer versions do indeed appear to be more capable than 15.3 (which was always in picked segment mode).

Trimming near the set point on an arc or circle would be an improvement.



Thanks,

BD

[DrollTroll]

No problem, BD. I think I have accidentally ingested some of those same hallucinogens a few times my self.