How to fix rectangle errors?
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Pretty frequently I seem to run into this issue where I have some geometry that looks like it should be a 2d rectangle but it won't create a surface. It's as if the rectangle isn't perfectly flat or something because many times I'm able to sort of fake it by drawing a line between opposite corners (so it makes 2 triangles). Anyone know a better way to fix this?
-Brodie
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There isnt a particular method for oslving this, although you can check to see if your rectangle is square and flat (which can help in telling why its not makign a face) by going window->styles->edit then clciking the lines bit, and choosing the 'colour by axis' option. Obviously this only works if your rectangle is parallel to the x, y or x plane.
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Brodie,
A rectangle that refuses to create a surface is a rectangle that is not flat, that is the four corner points are not in the same plane. Drawing a diagonal simply creates two planes which are not co-planar with each other. Remember any three random points will always form a plane, but not necessarily the one you want. The only solution is to figure out why the four points are not co-planar and fix that problem. Use the technique Remus provided to find the offending point.
Joe...
http://www.srww.com -
Also you can find the "culprit" endpoint by using the text label tool on the corners. Whichever doesn't say 0 for the blue axis (for example - in case of a horizontal rectangle) will be the one that prevents you from creating a face. You may need to adjust precision to some higher value in the Model info box.
To fix this, make sure nothing is selected, hover over the wrong point with the move tool, click on it when the inference appears, hit the up/down arrow on your keyboard and move it to 0 z value (by inferencing with any of the correct corner points).
Also note that SU has some kind of "tolerance" so you may even create a face with non coplanar edges (see example file - the face is created though the corner point farmost from the origin is 0.01 cm higher than the others - start push-pulling it up and see that the vertical edges lose their z-axis marking blue colour at about 3300 cm high).
So you never know...
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