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<?xml-stylesheet type="text/xsl" href="https://communities.bentley.com/cfs-file/__key/system/syndication/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/"><channel><title>[V8i/SS10] Place quarter ellipse tangent to something?</title><link>https://communities.bentley.com/products/microstation/f/microstation-forum/247841/v8i-ss10-place-quarter-ellipse-tangent-to-something</link><description>I could swear I used to do this, but I could also be mistaken. 
 Is it possible to place a half or quarter ellipse tangent to two lines?</description><dc:language>en-US</dc:language><generator>Telligent Community 12</generator><item><title>RE: [V8i/SS10] Place quarter ellipse tangent to something?</title><link>https://communities.bentley.com/thread/774919?ContentTypeID=1</link><pubDate>Tue, 25 Jul 2023 09:25:26 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:4f2b0df5-d5b6-45ac-afaa-f59dd3b310fd</guid><dc:creator>Barry Lothian</dc:creator><description>&lt;p&gt;The new constraints in that arrived in CONNECT possibly allow you to do the same, but as they aren&amp;#39;t part of V8i I can&amp;#39;t test them, and from what I recall reading previously, constraints were nowhere near in a finished state.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: [V8i/SS10] Place quarter ellipse tangent to something?</title><link>https://communities.bentley.com/thread/774850?ContentTypeID=1</link><pubDate>Mon, 24 Jul 2023 23:00:45 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:76246e95-fcfe-432a-b268-a4edd294c285</guid><dc:creator>Lorys</dc:creator><description>&lt;p&gt;thats a crying&amp;nbsp; shame&amp;nbsp; .. it&amp;nbsp; looked so good...&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: [V8i/SS10] Place quarter ellipse tangent to something?</title><link>https://communities.bentley.com/thread/774737?ContentTypeID=1</link><pubDate>Mon, 24 Jul 2023 08:18:08 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:a4c2942f-15e7-4eec-9fdb-9a1ef2f55b41</guid><dc:creator>Barry Lothian</dc:creator><description>[quote userid="2269" url="~/products/microstation/f/microstation-forum/247841/v8i-ss10-place-quarter-ellipse-tangent-to-something/774736"]Excellent demo of constraints![/quote]
&lt;p&gt;That wasn&amp;#39;t created in MicroStation I should probably add, before anyone might get the wrong idea.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: [V8i/SS10] Place quarter ellipse tangent to something?</title><link>https://communities.bentley.com/thread/774736?ContentTypeID=1</link><pubDate>Mon, 24 Jul 2023 08:13:38 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:9086106b-5df8-415e-af41-2a3b07c7caa1</guid><dc:creator>Jon Summers</dc:creator><description>&lt;p&gt;Excellent demo of constraints!&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: [V8i/SS10] Place quarter ellipse tangent to something?</title><link>https://communities.bentley.com/thread/774716?ContentTypeID=1</link><pubDate>Mon, 24 Jul 2023 07:19:08 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:0ea76375-64bf-4893-9c6c-a9784d254e3b</guid><dc:creator>Barry Lothian</dc:creator><description>&lt;p&gt;Here&amp;#39;s a manual animation showing how a constrained Ellipse with a tangent point on each line can yield different alignments of the Major Axis&lt;/p&gt;
&lt;p&gt;&lt;img style="max-height:817px;max-width:1057px;" alt=" " src="/cfs-file/__key/communityserver-discussions-components-files/273/M63OR1CbeX.gif" data-uw-rm-ima="un" /&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: [V8i/SS10] Place quarter ellipse tangent to something?</title><link>https://communities.bentley.com/thread/774648?ContentTypeID=1</link><pubDate>Sun, 23 Jul 2023 02:12:20 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:a9f21b03-49ae-45db-9ece-c06717d5d3e1</guid><dc:creator>clever_anthony</dc:creator><description>[quote userid="2436" url="~/products/microstation/f/microstation-forum/247841/v8i-ss10-place-quarter-ellipse-tangent-to-something/774584"]because I have problems getting &amp;quot;Move to Contact&amp;quot; to work the way I expect[/quote]
&lt;p&gt;Yes, that tool is imperfect, and recently forced me to write a VBA program for the case between circle and ellipse with a given vector, it requires a complex calculation:&lt;/p&gt;
&lt;p&gt;&lt;a href="https://en.m.wikipedia.org/wiki/Quartic_equation#/media/File%3AQuartic_Formula.svg"&gt;en.m.wikipedia.org/.../Quartic_equation&lt;/a&gt;&lt;/p&gt;
&lt;p&gt;Therefore, that kind of process cannot easily be completed by basic drawing tool.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: [V8i/SS10] Place quarter ellipse tangent to something?</title><link>https://communities.bentley.com/thread/774642?ContentTypeID=1</link><pubDate>Sat, 22 Jul 2023 13:01:03 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:8703c7bc-f282-4f21-8831-c30b6ddae928</guid><dc:creator>Barry Lothian</dc:creator><description>&lt;p&gt;An issue which I recognise with what you have told us is that there simply isn&amp;rsquo;t enough&amp;nbsp;information to place such an ellipse accurately .&lt;/p&gt;
[quote userid="2436" url="~/products/microstation/f/microstation-forum/247841/v8i-ss10-place-quarter-ellipse-tangent-to-something/774584"]I work in drawings that may have an exaggerated vertical, like 1H:5V[/quote]
&lt;p&gt;Is that a ratio or linear values for the Semi-Major and Semi-Minor axises (presumably in feet)?&lt;/p&gt;
&lt;p&gt;Additionally, can you confirm how the Major axis aligns in relation to either of the lines in your previous image? I think I am correct in the assertion that there are infinite combinations for the tangential points of contact between the lines and the partial ellipse so you need to reduce the Degrees of Flexibility by confirming what it should be e.g. should the major axis be perpendicular or parallel to one of the lines? This isn&amp;rsquo;t required with a fillet as its radius is constant, whereas you will appreciate that with your ellipse, it&amp;rsquo;s variable.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: [V8i/SS10] Place quarter ellipse tangent to something?</title><link>https://communities.bentley.com/thread/774628?ContentTypeID=1</link><pubDate>Fri, 21 Jul 2023 23:24:23 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:ef3ba61b-f83c-4b6a-a3b7-cd2dba3e8b90</guid><dc:creator>Lorys</dc:creator><description>&lt;p&gt;hi Mary , no mstn avail here anymore&amp;nbsp; being retired and Bentley Being extremally stingy about probono home licenses, but from memory under fillet we had circular right but wasnt there another option? I thought it was elliptical...&amp;nbsp; Geometry was&amp;nbsp; 100 years ago at high school so whats special about a&amp;nbsp; quarter ellipse anyway&amp;nbsp;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: [V8i/SS10] Place quarter ellipse tangent to something?</title><link>https://communities.bentley.com/thread/774584?ContentTypeID=1</link><pubDate>Fri, 21 Jul 2023 12:57:56 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:63a7a6ae-a08d-4cbc-8f92-136d1dcf9d29</guid><dc:creator>MaryB</dc:creator><description>&lt;p&gt;But a quarter ellipse could be tangent to two lines with floating endpoints, as in, I know I need an ellipse tangent to two lines, but i may not know what the axis lengths need to be. This means that I don&amp;#39;t know the exact points to click. It would also be possible for a quarter ellipse to be tangent to a line, just not at the quadrant.&lt;/p&gt;
&lt;p&gt;From time to time, i need to draw fillets with unequal scaling. I work in drawings that may have an exaggerated vertical, like 1H:5V. There are a few ways to place fillets like these, but I thought that placing a quarter ellipse might be a faster option:&lt;/p&gt;
&lt;p&gt;&lt;img style="max-height:240px;max-width:320px;" src="/resized-image/__size/640x480/__key/communityserver-discussions-components-files/273/pastedimage1689944135109v1.png" alt=" " /&gt;&lt;/p&gt;
&lt;p&gt;I had to&amp;nbsp;draw this quarter ellipse off to the side and move it into place because I can&amp;#39;t wrap my head around the calculations to figure out where either endpoint is. Even now, I&amp;#39;m not certain if the ellipse is actually tangent to the slanted line because I have problems getting &amp;quot;Move to Contact&amp;quot; to work the way I expect, but that&amp;#39;s another discussion for another time.&lt;/p&gt;
&lt;p&gt;It&amp;#39;s OK if this can&amp;#39;t be done with the tools as they are. As I said, I have other ways of constructing what I need.&amp;nbsp;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: [V8i/SS10] Place quarter ellipse tangent to something?</title><link>https://communities.bentley.com/thread/774516?ContentTypeID=1</link><pubDate>Fri, 21 Jul 2023 05:32:52 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:bd68b2f3-052d-42da-8d57-19aebcf2be7f</guid><dc:creator>f.mandoki</dc:creator><description>&lt;p&gt;The longer I think about it it seems there&amp;#39;s something overlooked. A quarter ellipse needs two lines being rectangular to each other. Therefore there&amp;#39;s no need for a second tangent.&lt;/p&gt;
&lt;p&gt;I guess you&amp;#39;ll need to draw parallel lines to find the center of the ellipse and then go ahead.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: [V8i/SS10] Place quarter ellipse tangent to something?</title><link>https://communities.bentley.com/thread/774468?ContentTypeID=1</link><pubDate>Thu, 20 Jul 2023 23:01:45 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:c2e30b19-0567-461a-9c13-0beeef715868</guid><dc:creator>Lorys</dc:creator><description>&lt;p&gt;great but&amp;nbsp; how do you do it to two existing&amp;nbsp; lines?&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: [V8i/SS10] Place quarter ellipse tangent to something?</title><link>https://communities.bentley.com/thread/774426?ContentTypeID=1</link><pubDate>Thu, 20 Jul 2023 15:25:56 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:a8510609-8c68-48c5-95c6-c2d0997868db</guid><dc:creator>Barry Lothian</dc:creator><description>&lt;p&gt;Hi Mary,&lt;/p&gt;
&lt;p&gt;It&amp;#39;s quite simple to do, you just need to think about the task differently because the tool dictates the task. Tangent Point Snap doesn&amp;#39;t work for this task so just stick with Key Point Snap.&lt;/p&gt;
&lt;p&gt;To do it:&lt;/p&gt;
&lt;ol&gt;
&lt;li&gt;Draw your Tangent Element (linear element works best)&lt;/li&gt;
&lt;li&gt;Activate the Ellipse tool and snap to an end-point of the element.&lt;/li&gt;
&lt;li&gt;Left-click to set the first point of the ellipse&lt;/li&gt;
&lt;li&gt;Select Accudraw and press R then E, hover the line and left-click.&lt;/li&gt;
&lt;li&gt;Now pull the cursor perpendicular to the element and (optionally press Enter to engage smart-lock) left-click to set or type the primary axis value&lt;/li&gt;
&lt;li&gt;Finally set the Secondary&amp;nbsp;axis value and you will have an half/quarter ellipse that is tangential to the first element.&lt;/li&gt;
&lt;/ol&gt;
&lt;p&gt;&lt;img style="max-height:240px;max-width:1920px;" alt=" " src="/cfs-file/__key/communityserver-discussions-components-files/273/LQjP9KpbEU.gif" data-uw-rm-ima="un" /&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: [V8i/SS10] Place quarter ellipse tangent to something?</title><link>https://communities.bentley.com/thread/774397?ContentTypeID=1</link><pubDate>Thu, 20 Jul 2023 14:15:38 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:f60b80ae-7ee9-427d-9915-9d4b877ab001</guid><dc:creator>MaryB</dc:creator><description>&lt;p&gt;Andrew, I am aware of the Tangent snap. It doesn&amp;#39;t work for half or quarter ellipses - go ahead and try it.&lt;/p&gt;
&lt;p&gt;When I place an arc, I have the option to place it &amp;quot;Start, End, Mid&amp;quot; which allows me to snap tangent to the first line and tangent to the second line. This gives me a dynamic arc that I can &amp;quot;pull&amp;quot; about to get the arc I want. I use this often to&amp;nbsp;create an arc that approximates a line string that looks like an arc, but is a bunch of tiny segments around a corner.&lt;/p&gt;
&lt;p&gt;There are no options - none - for placing a quarter or half ellipse. And the snaps don&amp;#39;t work in the same way.&lt;/p&gt;
&lt;p&gt;The first prompt for a quarter ellipse is &amp;quot;enter one end of the ellipse quarter&amp;quot;. Right here, I know I am in trouble. I don&amp;#39;t know the specific point for the end of the ellipse. I only know that I want the ellipse tangent to this element over here. I can use the tangent snap if I like, but the point accepted does not save the tangency constraint. It only uses the location, not any tangency.&lt;/p&gt;
&lt;p&gt;The next prompt asks &amp;quot;enter point on axis&amp;quot;. This is essentially looking for the center point of the ellipse. I don&amp;#39;t know that, because i am looking for something more dynamic (like the arc). But I can enter a point, just to move on with the exercise.&lt;/p&gt;
&lt;p&gt;The third prompt is &amp;quot;enter endpoint&amp;quot;. I do have a semi-dynamic element, fixed at the first point and the &amp;quot;center&amp;quot; I chose. At this point, I&amp;nbsp;&lt;strong&gt;&lt;em&gt;can&amp;#39;t&lt;/em&gt;&lt;/strong&gt;&lt;em&gt;&lt;/em&gt; use the tangent snap. It&amp;#39;s not allowed. I have the little &amp;quot;no&amp;quot; symbol over the top of what would be my snap.&lt;/p&gt;
&lt;p&gt;I don&amp;#39;t use this tool often, and I can see why. I hope I am missing something - some step, some setting, getting the prompts wrong?&lt;br /&gt;Perhaps I am remembering the tool wrong and it was never possible to create tangent half/quarter ellipses and I did something else instead...&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: [V8i/SS10] Place quarter ellipse tangent to something?</title><link>https://communities.bentley.com/thread/774297?ContentTypeID=1</link><pubDate>Thu, 20 Jul 2023 05:18:36 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:80ed9f48-cc83-49bd-b6aa-9187f355a18a</guid><dc:creator>f.mandoki</dc:creator><description>&lt;p&gt;I know you can easily insert a B-spline with tangents.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: [V8i/SS10] Place quarter ellipse tangent to something?</title><link>https://communities.bentley.com/thread/774272?ContentTypeID=1</link><pubDate>Thu, 20 Jul 2023 00:38:27 GMT</pubDate><guid isPermaLink="false">6dad98f5-dbc9-4c4d-a9ba-e9da8dc6aa8e:c2998e27-91e6-48b2-bb57-2e2545f38b53</guid><dc:creator>Andrew Bell</dc:creator><description>&lt;p&gt;I would suggest possibly using the Tangent Snap may be effective in performing this operation.&lt;/p&gt;
&lt;p&gt;&lt;a href="https://docs.bentley.com/LiveContent/web/MicroStation%20Help-v24/en/SnapMode.html"&gt;Snap Mode Toolbox&lt;/a&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>