Tagged: Background image resizing
April 28, 2021 at 14:17 #44102ROUSSET Jean-PierreParticipant
I am a newcomer to the forum and present myself with this first message, hoping that it is placed in the right place :
- I’m situated in France near Marseille,
- I am 80 years old,
- I don’t have a great practice of the English language but whatever, the automatic Google translation helps me a lot even if I have to correct certain expressions,
- I am a retired system engineer-developer for more than 20 years from the company Eurocopter (EADS) for the construction of helicopters,
- computers that have fascinated me all my career continue to be one of my retirement hobbies, especially in the graphic field because I like models.
I will not say more in the hope that my post will be approved.
Best greatings to all,
April 30, 2021 at 03:33 #44105
I have zero fluency in French (the product of a standard 1960s American high school education), so thank you for your efforts. And it’s not our job to approve anyone in this forum. Most of us are “in the same boat,” if you will. 😕
So, do you have any particular project in which you are interested? Have you downloaded the Free version DELFTship? Be sure to get the manual as well. The manual will introduce you to what the program can do and the many features it has, but it is a little light on explaining the process of performing various tasks.
Feel free to ask any questions you like. You will often get a response within a day or less, especially if it is a technical issue.
Colorado Springs, Colorado, USA
May 3, 2021 at 08:54 #44106ROUSSET Jean-PierreParticipant
Thank you very much for your reply. But I am very surprised at the low attendance of the forum since its creation, a little more than 1200 subjects which only received a little less than 4000 responses. Apart from your message, the responses go back to times which are expressed in weeks and very quickly in months ! …
I am currently using the free version 13.20 (333) of “DELFTship” which I downloaded at the beginning of March 2021 to try to carry out my first two model projects in order to carry out a construction plan and to manufacture them thereafter. I wanted to do it before intervening on the forum to acquire as a priority the minimum knowledge of the software.
This two projects are :
1 °) – The “pinque Marseille” which is a large tonnage boat, old from the 19th century :
<p style=”text-align: center;”></p>
<p style=”text-align: center;”>http://jeanpierre.rousset.free.fr/Modelisme/M_Decoration/bateaux/Pinque/Documentation/La_pinque_la_Fileuse_les_plans.html</p>
2 °) – the “Fournier RF4-D” which is a glider plane on which I flew in the past. Having more or less understood the mathematical approach of the developers, I concluded that I could make an airplane model with this naval architecture software, not having been able to carry out the project with “FreeCAD” or even with “Blender“ much devoid of intuitiveness :
<p style=”text-align: center;”></p>
<p style=”text-align: center;”>http://jeanpierre.rousset.free.fr/Informatique/Applications/DELFTship/Fournier_FR4-D/Documentation/Fournier_RF4-D.html</p>
Sorry, the two web pages are written in French.
At the end of the plane’s web page, I made some thought-provoking remarks. These are not critics or even requests for modification. I take this beautiful software as it is offered to me.
May 3, 2021 at 15:18 #44109
Good morning, Jean-Pierre.
DELFTship should be appropriate for your projects and I would like to follow your progress in both. Since these models are left/right symmetrical, the program can display both sides while modeling only one side.
I think this website is underutilized by both the users of the program and the owners themselves. Sometimes one receives a quick response and other times—as in your case—”all you hear is crickets,” as they say here in the US.
I looked at Marseille website, and in particular, the related DELFTship instructions, and they seem to be no longer applicable after the DELFTship version 13.10 (324) update this past winter. If you wish, I could email you a useful tutorial on setting up Background Images using the latest version of the program. My personal email is txtbkauthor[@]gmail.com (remove the brackets). I also think communicating by email will be more effective, considering the technical issues with this forum’s programming.
May 6, 2021 at 11:40 #44110
Good day Terry,
I still do not understand how to resize a background image and the tutorial is not clear.
Can you help? Thanks
p.s. I used to live in Colorado Springs a few moons ago… in Village Seven…
May 6, 2021 at 21:48 #44111
I would be happy to try and assist. The trick with the new Background Images feature is that after you load the new image in the Background Images menu item, there are number of things in a particular order to do:
- First, click on Edit in the Background Images menu item in the Home ribbon. Then select the Editor General tab, which is the default tab when the Editor opens.
- With the 2D viewer selected, expand the File menu item dropdown in the ribbon, then click on the image to be positioned and resized.
- For a profile view image, drag the little red box to the intersection of the Aft Perpendicular and the model Baseline. If image is a body view, drag the little red box to the intersection of the Centerline and Baseline. If image is a plan view, then drag the box to the intersection of the Centerline and Aft Perpendicular. This establishes the “origin” for positioning and resizing the image.
- Next, switch to the orange Edit tab. This window includes a thin red line with two handles. Grab the handles and position them on a known horizontal reference line in the image. Normally, this will be a waterline in a ship’s plan. You may have to add a horizontal reference line to the image in a separate 2D software. This line needs to be parallel to the vessel’s waterline.
- Note that if the red horizontal line is not horizontal to the model baseline, the Align button in the Rotate menu group in the ribbon will be active. Click on the button to level the image. This aligns your image to the model baseline in DELFTship.
- Next, click on the 3D tab above the image window.
- Your image will be highlighted in yellow. Select the viewport that displays the new image face on. For a profile image, this will normally the Left viewport (or it can be the Right). For a body plan view, select either the Aft or Front viewports. For a plan view, select the Top viewport.
- You will see eight “handles surrounding the edge of the highlighted image and one in the middle. These are used to reposition and scale the image. Also, the origin of the image (see Step 3 above) will be positioned at the origin of the model.
- If the padlock symbol on the selected file in the ribbon File dropdown is locked, then moving any of the outside handles will rescale the entire image proportionately from the image origin. Select a handle that is farthest from the origin for the best control. See Step 11 below for guidance for resizing the image.
- If the padlock symbol is unlocked, then any of the outside handles with resize the image but only in the direction you drag the handle.
- Resizing the image to the dimensions required by the model is most easily done by matching key lines in the image to corresponding “intersections” you have entered in the DELFTship model. Also, the types of intersections must be visible. (You can select the intersections to display in the top row of the Hull menu group in the main program Home ribbon.) You should enter the appropriate intersections in the program before scaling or positioning the image using this method. For a profile view, adjust the image to match the Fore and Aft Perpendiculars for length, and Baseline and Waterlines for the vertical height. For a body plan image, use Buttock lines for the width and Waterlines for the height; for plan views, use Buttock lines for width and Station lines for length. You can zoom in while adjusting dimensions to make sure the plan lines and intersections exactly overlap. Note that the center handle of the highlighted image can be used for recentering the image if it requires regardless of whether the image is locked or unlocked.
If you want illustrations of the above steps, I can email my five tutorial PDFs to you if you contact me at the address I provided in my previous message to Jean-Pierre. The tutorial goes through the whole process of setting up to create a new model, with reference to the current DELFTship manual.
Colorado Springs is a great town, especially with five grandchildren here!
May 8, 2021 at 17:41 #44130
I have tried your steps.
Looks like you have to do this for every view (profile, plan, body plan) individually. Of course this will introduce errors even with perpendiculars and baselines… and cannot be done on a scale like in the previous versions. Am I correct?
- This reply was modified 1 week, 3 days ago by Fernando Cruz.
May 7, 2021 at 12:13 #44119MaartenKeymaster
I’ve made a very terse trial tutorial video on how to scale background images (soon to be re-labeled as ‘Reference images’) :
I’d love to hear what you think of this type of content, and what you’d like to see improved.
Also, we’ll be taking requests on features that you want to see explained in a short video.
May 8, 2021 at 17:53 #44131
About the video – some words would be good because it is not easy to predict where the cursor is going when you are trying to read the captions.
About the solution – I found that the old method of scaling was very easy to use. One would build a model out of the background images in whatever scale the background images would produce and then scale. And when one scaled it asked you if you wanted to scale background images (and other things). Then everything would go in unison.
I am going to try to scale some background images before making a model and see how it works.
May 9, 2021 at 12:37 #44135
I now realize one can still do it the “old way” which is good for me because I do not copy existing lines to make replicas. I often use existing hull lines to guide me into new hull shapes that I then modify to achieve what I want of the new hull.
This new way of scaling background images is an add on to what I can still do which is to import a set of images, accept whatever scale they come into, then I put points on them and then, when I have a prototype hull that I am ready to test for hydrodynamics I then scale everything to the desired size.
And I can still do this. Cool.
May 7, 2021 at 15:53 #44126
“Pictures are worth a thousand words.” Good videos are worth 10,000 words.
I think these videos would be useful. In the Model Ship World forum, our members are frequently seeking information on various aspects of DELFTship that could be explained in such videos.
I have a few comments about this one that might help:
First, I learned that you can precisely set the coordinates for the reference point in the 2D viewer by clicking on it. I don’t think this is mentioned in the manual.
Second, the video combines actions with instructive text that (for me) moves too quickly through the steps. I was trying to watch what buttons were pushed and missed the explanatory text at the bottom. It might be more effective if the explanatory text was displayed first, then the action was taken.
Third, this video assumes that you already have a model to align an background image to. In my experience and those of ship modelers who are just starting a model, there is no model. It would be helpful if you could show the process to insert and resize a background image when just starting a model, and assuming the viewer is a novice user of the program. I have found aligning and resizing the image to the “main particulars” as set in the Project Settings works for me.
If you wish, I can send you the tutorial PDFs that I created for this specific purpose to give you some ideas for other videos.
May 7, 2021 at 16:17 #44127MaartenKeymaster
Thanks for the feedback. Early next week I’ll start a new subforum with at least this tutorial, and a section with suggestions. I would appreciate it if you could share your suggestion there, if at all possible including the PDF’s..
I would really like to have the discussion of what should be included in the short videos before I make them- editing videos is not necessarily a passion of mine 😕
May 9, 2021 at 05:01 #44133
Fernando said: “Looks like you have to do this for every view (profile, plan, body plan) individually.”
As far as I know, yes. I think an earlier version allowed you to import the different views from the same source diagram and you could designate them as the same scale. That sometimes worked and sometimes not. And you still had to position them properly.
I think after you practice with the new Background Images (or Reference Images) feature a few times, you will see that this method is actually easier and more reliable when using a good set of quality images. (This latter issue is one of the topics I address in my tutorial.) I’ve built several models in the past 6 months, and this feature is much faster and less frustrating than the earlier methods. It usually takes me less than 5 minutes to import and size the image accurately. Since the final model depends on getting the reference images right, this isn’t wasted of time.
May 9, 2021 at 12:31 #44134
actually one can still do the scaling or everything or parts of as I used to do.
What is added is a way to manipulate background images in addition to the previous feature.
Thanks for your help.
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