08-14-2018, 02:02 PM
(This post was last modified: 08-14-2018, 02:47 PM by rodalsa.

*Edit Reason: adding 0 ahead of .xxxx and .0000 after -2000*)
I searched extensively for what I term the "Specifications for Deltacad" on the Internet. Failing that I proceeded to answer the question for myself with a somewhat "definitive" answer for; "What is the smallest angle that Deltacad can resolve?"

Using a grid of (0.0001, 0.0001), Snap to nearest point. An origin at (0.0000. 3.0000), I worked as follows...

I generated a drawing working with the dimensioning of small angles with DeltaCad 7 Professional. By iterating the y value of the left (as viewed) end of a line (-2000.0000,y) that has a common right end (0.0000,3.0000) in such a way as to move the left end (-2000.0000, y + delta y) , I found that at certain small angles associated with y the program ceases to display the usual arrow heads while prompting me to select the insertion point for the angle's value. I changed the view scale over wide ranges looking for those elusive arrows.

Working with the iterative process described above, I found that the disappearance occurred at angles below 0.5000

degrees. In fact things were a bit more unusual. The opposite side of my test triangle was (-2000.0000, 17.4537) with the angle dimension presented normally as 0.5000 degrees. Choosing the opposite side at (-2000.0000, 17.4502) produced an angular measurement of 179.5001 degrees. I could not find a way to display the value between the adjacent and hypotenuse of the triangle as I could with angles greater than 0.5000 degrees. Since Microsoft's Calculator calculates the angle using trigonometry techniques as 0.49989, rounding it to 4 decimal places gives me 0.4999 which is 180.0000 - 179.5001. You should note that the two lines referenced here at (-2000.0000, y) were overlapping each other at a view scale of 0.003.

While looking for the insertion point for the value of the angle that turned out to be 179.5001 degrees the dimension arrows appeared and disappeared as I varied the view scale.

Perhaps 0.5000 is not the smallest angle that Deltacad 7.0 Professional can resolve. From my experience things do get a bit harry below that value.

Using a grid of (0.0001, 0.0001), Snap to nearest point. An origin at (0.0000. 3.0000), I worked as follows...

I generated a drawing working with the dimensioning of small angles with DeltaCad 7 Professional. By iterating the y value of the left (as viewed) end of a line (-2000.0000,y) that has a common right end (0.0000,3.0000) in such a way as to move the left end (-2000.0000, y + delta y) , I found that at certain small angles associated with y the program ceases to display the usual arrow heads while prompting me to select the insertion point for the angle's value. I changed the view scale over wide ranges looking for those elusive arrows.

Working with the iterative process described above, I found that the disappearance occurred at angles below 0.5000

degrees. In fact things were a bit more unusual. The opposite side of my test triangle was (-2000.0000, 17.4537) with the angle dimension presented normally as 0.5000 degrees. Choosing the opposite side at (-2000.0000, 17.4502) produced an angular measurement of 179.5001 degrees. I could not find a way to display the value between the adjacent and hypotenuse of the triangle as I could with angles greater than 0.5000 degrees. Since Microsoft's Calculator calculates the angle using trigonometry techniques as 0.49989, rounding it to 4 decimal places gives me 0.4999 which is 180.0000 - 179.5001. You should note that the two lines referenced here at (-2000.0000, y) were overlapping each other at a view scale of 0.003.

While looking for the insertion point for the value of the angle that turned out to be 179.5001 degrees the dimension arrows appeared and disappeared as I varied the view scale.

Perhaps 0.5000 is not the smallest angle that Deltacad 7.0 Professional can resolve. From my experience things do get a bit harry below that value.