Shape Properties Tab shows incorrect size, This is a new shape drawn and resized with aspect ratio locked and sized to 100mm (then duplicated and rotated 90 degrees to confirm) I expected the resized shape to fit within a 100x100mm square but is 100x86.6 and the height and width reflects this while the Shapes properties tab shows the 100x100mm that I expected it to be, confirmed with measurement tool actual size is as displayed in height and with not what is shown in the Shape Properties tab. I read the Shape properties vs size thread but these shapes have not been grouped at all so his explanation does not fit here if I am understanding what Oz is saying.
The width and height are measured on a 6 side shape from different places. From flat to flat and then from tip to tip.
Try an shape with a multiple of 4 , I e. Square or octogan or even dodecagon.
So you are agreeing that the width (x axis) is shown incorrectly in Shape properties tab ?
No, he is saying the bounding box and the shape dimensions are not the same thing. If you make a 100mm shape. then rotate it 90 degrees, it is still the same 100mm square. But now the corners are on the X and Y graph lines. So X is now 141.4mm, which is the diagonal of a square (1.414 times 100). And it is still a 100mm square, right?
Ummm isn’t that what happens if you rotate it 45 degrees NOT 90 degrees, I understand the 45 but not the 90. 1 and 3 agree but 2 differs, and I just cant see WHY.
What happens at any angle other than 90° is the same. The only difference is the numerical results. I chose 90 only because it made the math simple. Rotating any object about the center will make the dimensions vary in the X and Y directions. Yet the object remains the same size.
Cut out an odd shaped piece of paper. Stick a pin in the center. Hold it up vertical and rotate it. You will see the vertical height vary. That is your bounding box. The bounding box is not a measure of the part size. It is a measure of the X and Y coordinates.
I hopes this helps because I know no other way to explain it. ![]()
Yes I understand that and in my example it is rotated 90 degrees for this reason so before and after the rotation the width and height would swap and be on the smallest possible Boundary box, But what I am asking is WHY is the width showing as 100mm when according to the both the measure tool and the boundary box it is 86.6mm.
Upload your Lightburn file. I will try to see what you are seeing.
You are showing the width in the first shape then the width after being rotated in the second shape. they are 2 different shapes rotated 90 degrees to each other, they have different width and height, but according to the Shapes Properties they have the same width and height. I’ll post the file with comments included to see if that makes it clearer for you to see what I am seeing.
Shape Properties.lbrn2 (256.0 KB)
This is where you have the difficulty visualizing it. This is NOT 2 different shapes. It is the same shape rotated in space. I overlayed your left hexagon with the right one. As you can see, it is the same.
Imagine a child’s Alphabet Block. If you move it around the room or rotate it in your hand, it does not become a second, third, or infinite number of blocks. It is still the same block.
If we make a copy of that block (CTRL-D in Lightburn) so there are two, the second block does not change size because we rotated it, right?
“they are 2 different shapes rotated 90 degrees to each other,”
You are confusing shapes with objects. Yes, there are 2 objects, but only one shape!
Shape Properties-Check.lbrn2 (264.8 KB)
Yes my bad I called it a shape instead of an object, Lets attack this a different way, totally ignore B (B was just done for conformation),.
In shape properties why is height showing as 100mm not 86.6mm.
Ah, now I think I got it. This is because the shape “size” is kind of the bounding box of the shape. In the case of your hexagon, it is a circle with radius 50. So no matter how you turn it, the shape’s bounding box width and height will always stay 100x100.
I think we have it worked out, But it only works if there are two different boundary boxes, one for Object which used the container sizes used to create the “Shape/object” and one for the shape which is height and width of the shape if it is cut out, So it looks like the top menu is showing the “Shape” boundary box sizes and the Shape properties is using the “Object” boundary box sizes
That works for me!!! Whewwwww!
I guess you mean the correct thing. The top menu is showing the maximum expansion in x and y, respectively. No matter what the shape looks like. Only the minimum and maximum coordinates count. The shape properties reflect the shape properties, no matter how it’s oriented in space.
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