Questions tagged [measurement]

Questions pertaining to measurements in Blender. Real measurements as well as Blender units are acceptable.

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25 views

How can I scale something with actual measurements in meter,cm,etc?

What a want to do is a big cylinder which is going to have a diameter of .285 m and do several cut loops but when I want to do an scale and type the units of that cut loop (for example 0.335 m) in ...
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1answer
37 views

Measure Tool Data from Python

How can I access the measurements displayed with the Measure Tool in Blender 2.80 from Python? I'm not seeing it anywhere in the documentation, hoping I'm just blind. Thanks.
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17 views

Precise scaling in Edit mode impossible?

[ [ I turned on the edge length indicator in Edit mode, but apparently it gives false (rounded) values, since the vertices don't align. In this example I tired joining 3 tetrahedrons around a 345 ...
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10 views

Is there a way to have the measure tool scale up with the object you're measuring and scaling?

Let's say you have a good old cylinder. You want to make sure that its diameter is exactly 50 mm. You can start by adding a cylinder, and then scaling it until the diameter is indeed 50 mm. Is there ...
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22 views

How to measure total size of selected objects?

In Blender I have never, except when joining multiple objects together been able to see the total size of objects in the scene. Is there any way to achieve this, without joining multiple objects?
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17 views

Set measurement between 2 verticies

I would like to set the size between two verticies. The only way I know how to do this is to select two verticies, make sure that edge length is showing (overlay) and scale whilst holding shift until ...
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1answer
53 views

remove measurement

I love the new measure tool, but seems I have a measurement that just will not delete. When I delete it (either with the delete button or with X) it seems to vanish only to reappear shortly later ...
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18 views

How do I change the operator panel input box in my add-on to allow units?

I am writing an add on that extrudes and rotates an object and I am using the operator panel to configure the measurements. Currently, I have FloatProperty and IntProperty which will let me configure ...
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41 views

Does Blender 2.8 use floating point?

I've heard a lot of people say it does, but 'where' does it say that it uses that. If it does, is there a way to switch it to something a little more precise (because occasionally floating point may ...
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1answer
49 views

Is there a way to enter a precise amount of length or width for the measuring tool in Blender?

I'm specifically talking about the Measure tool with the protractor icon. I wanted to resize my mesh to a specific length, but I'm having to tediously move the anchor points on it which is time ...
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19 views

Why don't the edge lengths update after I've scaled my object?

In Blender you can turn on edge lengths by going into edit mode and then turning it on in the overlays menu. However, whenever I scale up the object,the lengths stay the exact same which should be ...
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21 views

U shape, set distance between legs

I made a U shape using the SimpleDeform modifier and now I must set a precise distance between the U legs. How can I do this? I can increase the distance between the legs using the move tool but I ...
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18 views

Accuracy of Edge length measurements [duplicate]

I've been trying to modell with some accuracy using Blender 2.8 using the Edge Length under Viewport Overlays > Measurements. However I've noticed that the ...
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25 views

Accessing MeasureIt data with a script

I’d like to dimension and measure corner angles of objects with MeasureIt and then access them with a script so I can output a list of the objects with their specs. At this point I'd just like to know ...
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1answer
49 views

How do I fit label precisely around bottle, specifically the circumference?

I plan on wrapping a label around this bottle but the label gets distorted everytime, so I've concluded I need measurements to match. I've thought about making edge loops to get a specific height when ...
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1answer
35 views

What is the correct measurement systems for animation?

In animation, which scale or measure system should I use? For example, If I model an entire room and plan on having a character moving about in it, should all the assets and character be done to real ...
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237 views

How can I draw a line between 2 specific points?

I want to find the center axis of the inner irregular cylinder below. I want to determine 2 points and draw a line between them so I can find the central axis. Is there a way to do this?
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2answers
45 views

How can I determine the coordinations of the deepest point of a pit located on a 3D object?

I am trying to find the deepest point of a rough pit located on a rough 3d object. The pit is full of irregular vertices. https://drive.google.com/open?id=1muCjhRDHhwo3AnY194BAvkaCpPIdyWhx I cannot ...
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16 views

How to figure “Array” modifier offset when using “Subdivision” modifier as well?

First of all, I’ve seen how using the Subdivision Surface modifier on a cylinder will shrink the radius. But, the Transform pane shows the actual, new dimensions, so it’s easy to fix: type the ...
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1answer
55 views

How to draw a cylinder with an irregular cross section, which varies along the cylinder length?

I want to draw a cylinder which has a different and irregular cross section along the cylinder length, with precise measurements ? At each angle the cylinder has a specific radius, therefore the ...
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0answers
20 views

Degrees (°) not showing up as expected?

I'm trying to measure a corner to see if it measures larger than 45° for 3D printing. I use the measure tool to recreate the corner of my object but the degrees seem off. A 90° angle is displayed as a ...
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1answer
23 views

Measureit Measurements Inconsistent After Export

I’ve been using the measureit tool to get the proper dimensions for a 3D printing project I’m working on. The only problem is that after exporting the file and then uploading the STL into my printing ...
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32 views

rule/protactor: how to measure distances to pointer?

my first post, be nice please. I'm trying to measure exact distance from a vertex to center. It would be better if I would learn how to measure from vertices to pointer, so I would be able to do a ...
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1answer
56 views

How do I get the inch measurement around this cup?

In the scene panel I've selected Inches as my units but I get this 463thou symbol instead. Anyone who knows what I'm overlooking, let me know. Asking for a friend.
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273 views

2.8 how to keep measure lines?

Is there a way that let the each point of the measure line automatically snap to the assigned vertex before as you size up and down the mesh? Also I want to know how not to click the measure point ...
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0answers
34 views

How to determine angle to place people during a dolly in green screen if filmed separately?

I have a blender model of a large room. In the scene, I have several people seated at consoles spread x feet apart (in reality, they are in a green screen studio). I am using a physical chair for the ...
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1answer
751 views

How to calculate the distance between two selected vertices?

Now I have got a new problem. I want to measure the distance between 2 selected vertices but I do not know how to do that in Blender. Can you help me? Thanks a lot.
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1answer
153 views

Adjusting Scene Scale with BLAM to real world estimation measurement

I am remodelling a scene from -presumably- a photo. Using BLAM addon. I would like to know how to adjust the 3D model in the scene. To the real world estimated measurement. As can be seen in the ...
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1answer
23 views

Using some kind of unit of measurement for scale?

So I'm not very experienced in making scenes. So for my first attempt at doing so I want to make a scale model of my apartment. I'd like to make it last night and still possible, but I don't know how ...
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3answers
91 views

Area of bottom polygons using obj.to_mesh post modifier but without applying it

First of all, I'm quite new to python so please bear with me if I'm asking dumb questions. I've seen similar questions answered but still can't get where I want. Say we have an active object in the ...
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1answer
480 views

How to set a specific distance between two vertices?

I'm on Blender 2.79 and could not figure out how to set distances between vertices(or anything) in Blender. I'd like the distance between the two selected points in this image to be 77cm or in my ....
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1answer
609 views

Measurement of the “Straightened” length of a path

So, I'm having a bit of trouble with scaling. An object I'm making involves the use of a path to form a curved surface, but I need the resulting curve to be within about 1% of an exact length. So, if ...
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2answers
238 views

Getting 0 Volume for object

I am trying to calculate the volume of a 3D scanned object using the 3D Print add on. The object was captured with a structure sensor/ipad and then imported to Blender (version 2.79). The scanned ...
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0answers
74 views

Virtual prototyping with Blender?

I'm currently designing furniture in Blender and was wondering if anyone has ever used Blender for virtual testing? Specifically, if Blender has tools to ensure that parts will fit, structural ...
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1answer
380 views

How to scale the scene relative to an objects metric values?

I have created an office desk in Cycles and am very pleased with the result and how it appears to the eye. It is only now that I have changed the scale to the metric system and want to re-scale the ...
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27 views

Straighten vertices along a line without changing line lengths

I need to use the circumference of a shape to calculate its height with that circumference as my physical reference. I have a cross section of the shape isolated, but it's a lot vertices in a pretty ...
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0answers
145 views

Is there a way to do absolute measurements in edit mode?

What I'm trying to accomplish is something as simple as grabbing a line or two verts (maybe more complex objects if possible) within edit mode and then setting their scale to an absolute measurement. ...
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2answers
729 views

How to compute the centroid of a mesh with triangular faces without using Blender's built-in functions?

I do not want to use Blender's built-in functions for computing centroids as explained here as it seems that they do not give me the kind of centroid I expect to get. I want to compute a new centroid ...
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1answer
467 views

Blender for Engineering: Numbering and naming objects in blender

I am working on technical drawings with Blender using MeasureIt. I am following for making blueprints of specifical parts this youtube tutorial, and it works great. But when I am producing "big ...
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0answers
317 views

MeasureIt is this a bug?

i try to measure my drawing with the "MeasureIt" Addon. The measurement should look like "A". The result is "B". Ok i think, maybe that's because the Verts belong to two different faces. So i copy the ...
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0answers
485 views

How to set the distance between objects accurately?

I want to have the same distance between all objects.
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1answer
592 views

Cycles: Is there a way to find the angle between incidence and reflection rays?

Is there any point, be it through cycles nodes, OSL, or even somewhere in the code of Cycles itself, where the angle is known between the camera/incidence ray and the reflection ray for a given bounce?...
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1answer
303 views

How can i measure projected area of any object in blender ? (Ex. shadow from top view)

I'd like to measure the area of the projected front, top or side view of an object. please give me some suggestion Thank you.
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0answers
160 views

How to control/change the unit of measurement precision of the ruler?

How to change the ruler's unit of measurement precision to show only 10ths, 100ths, 1000ths, etc. appropriate to the scene (e.g. architectural vs precision machining). Example: x to y measurement = ...
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1answer
182 views

Precise measurements not adding up to scale

I'm using blueprint data in conjunction with imperial units to, hopefully, create 3D models of machine parts, which I will later attempt to fit together. Beginning with an eccentric shaft, I input ...
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0answers
195 views

Convert Curve (SVG) to Blender exact imperial units

As a test, I've created a 2D box in Inkscape with the dimensions 1' by 1' (Inkscape shows that 1' is 1080.000px). I import the SVG into Blender, and when observing the dimensions of the curve ...
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0answers
68 views

How many density-independent pixels is one unit of measurement in Blender 2.7x? [closed]

I would like to know how many density-independent pixels it takes to make on blender unit. Please?
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2answers
958 views

What are the Measurement Units

i was doing a project of making drone parts which i want to 3D print but i don't know how the measurements in blender are going to be the same as the ones in real life so can anyone help me
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1answer
213 views

Scale and change certain measurements of 3D image that was imported as .svg file

I have converted a 2D image of an animal into a 3D image in Blender (as an .svg file). I was wondering if I can give the image proper measurements based on a dataset I have (I've attached an image ...
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1answer
3k views

Surface Area and Volume Measurements

I am fairly new to Blender and I'm hoping to find a way to easily calculate surface area and volume of irregular objects in Blender. I was looking into the Measureit addon, however it seems that I ...