Greetings, I am back again for additional guidance.
Following my last visit some weeks back, I received much helpful advice from several skilled folks, then I went away and tried to apply what I learned. Seems I may have slid backward.
I started a new SU 2-D floor plan drawing, keeping it very simple.
Turned off length snapping, but left ‘on’ angle snap to 15 degrees.
Layed in a ground plane canvas tied to the origin with Z=0.
Then I created a simple floor plan drawing striving to keep all lines and shapes on the ground plane as recommended. Using only Layer 0.
Drawing was accomplished in great part using the tape measure to layout grids and then drew using the line tool primarily, and the rectangle tool some. I used the arrow keys to draw lines in the red/green directions, taking care to hit corners and stop on lines. Used the rectangle tool minimally, but when I did inferencing was used to place the rectangle.
Rectangles are not being recognized as closed polygons with distinct boundaries. No distinct plane is created within the closed rectangle.
Dbl-Click about anywhere and you will see an unusual set of elements highlighted in blue. Filling a shape with a new color will likely produce unexpected results.
I have looked unsuccessfully for short lines extending into rectangles, gaps and stray bits.
Also, I should note that in an email exchange with an experienced forum member they noted:
I spent an hour or so trying to understand why SketchUp is not recognizing the “closed” polygons as distinct boundaries. I failed. I suspect that some of the points are very very slightly off of the Z=0 ground plane. But I can’t find it.
I scaled up the geometry in the vertical dimension by a factor of millions, and set the Model Info window’s Format to Decimal, and Precision to the maximum (0.000000" or something like that). Then I used SketchUp’s Text tool to click on various end points and drag out to have SketchUp display the 3D coordinates of the chosen point (which is the default text for the tool, when on an end-point). Everywhere I looked, the third dimension was 0.000000". Even so, there must be a discrepancy somewhere.
You can get a hint of this by orbiting the camera away from the straight down view. When looking obliquely, various portions of the floor will flicker as you orbit around. This is called “Z-fighting” in computer graphics, which means there are two surfaces at about the same visual depth from the camera, and the rendering engine is flipping back and forth drawing one or the other as the view changes slightly. Deleting those various flickering faces cleans up the model but does not “heal” the fact that the ground plane does not seem to be touching all edges.
Suggestions and observations welcomed. Model is attached.
Thanks, HOME May2018v2.skp (215.6 KB)