lepr
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Posts
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Joined
Posts posted by lepr
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16 minutes ago, tcurdt said:
It would be great if you could explain how you did it.
Divide the original image by your background-only image, and then use a Channel Mixer Adjustment to map the greyscale intensity levels of the result to alpha levels of black pixels.
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- NotMyFault and loukash
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16 minutes ago, iconoclast said:
Ctrl + left click causes "Rotate" on Windows. Possibly it is different on Mac. I don't know.
In general, but there are exceptions, Affinity uses the following modifiers while you drag with mouse left button:
- Mac cmd = Win ctrl
- Mac ctrl = Win mouse right button
- Mac opt = Win alt
- Mac shift = Win shift
- combinations of the above
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6 minutes ago, iconoclast said:
Many thanx for this hint! But why "Translate"?
You're welcome
Translate is a mathematical term for the operation.
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39 minutes ago, iconoclast said:
No, if I hold the Ctrl-key, the rectangle gets rotated if I drag the node. The entry you highlighted is "to translate" (whatever that means). For that, I have to hold the right mouse key, as the status bar says. But that only opens the context menu. As far as the status bar says, I don't have to hold anything but the left mouse key to drag the node without scaling the rectangle. But that doesn't work. Possibly a bug?
Just dragging a point with no modifier will both rotate and scale the selected object(s) about the Transform Origin.
Translate means move the object(s) without scaling or rotating, like sliding across the page/canvas. On Windows, you will need to hold down the right-button while you drag the point with the left-button.
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3 hours ago, Neil G said:
When trying to copy a mask in the Channels panel I'm unable to "control click" to bring up the menu items.
Welcome to the Affinity forums
That problem with the crtrl-click recognition has been around for years now, but try ctrl-clicking near the top edge of the required row in the panel.
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vive la bug!
Not even acknowledging the bug? That is seriously f'd up customer service.
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1 hour ago, R C-R said:
The know-how to write the code for a tool in one app that can run on one platform with one integrated set of features does not necessarily mean that it can be done in a similar way on another app with a different set of integrated features that runs on several different platforms.
Nobody said it does. I've been a software developer for four decades, so try preaching at someone else.
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14 hours ago, R C-R said:
I am talking about it because some are assuming that because the code exists for a particular tool in DrawPlus, it should also somehow could be reused in AD.
I think it's more a case of "some are assuming that because the know-how exists at Serif for a particular tool that was in Draw Plus, the tool should be in AD by now."
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40 minutes ago, Yaisog said:
I have uploaded the Designer 2 file to the original post.
The right hand rectangle in the current document is RGB(179, 179, 179), which is 30% black, not 25%. That doesn't explain the red tint on your machine, of course.
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27 minutes ago, Frozen Death Knight said:
pressing Cancel actually creates the group without the name
As does pressing esc key
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2 minutes ago, loukash said:
Yeah, I just rebuilt your example in v1 and it's the same.
The .afdesign file I provided is from v1.10.6.
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Just now, loukash said:
Also affects v2.3b
Yes, and it has been in the apps for years.
Problem is getting the info past the gatekeeper to the developers. That's one reason why I've abandoned starting bug report threads.
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A simple example of the broken PDF export.
Source document:
contains transparencies.afdesign
Exported PDF:
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On 10/30/2023 at 3:11 PM, DWright said:
If you select the Rasterise option of Nothing in the PDF export then the shadows will be exported to the PDF file.
That makes the result look washed out all over when the export ppi is left at 300 and no image resampling occurs. It was the rasterised part of the OP's export that looked ok.
Your workaround only works because images are being downsampled (to 72 ppi in your case), which is a form of rasterisation.
A bug needs to be logged.
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On 10/28/2023 at 1:18 PM, bluetux said:
However, it should ideally display correctly even without grouping. Unfortunately, that is not the case.
Unfortunately, a permabug. At least, it is on macOS. I don't know what happens on iPadOS or Windows.
In the case of your ungrouped placed transparent PNG with reduced opacity, the RGBA TIFF inside the exported PDF has correct alpha values taken from the placed RGBA PNG, but its RGB values wrongly are as if the placed PNG was being blended with white.
If you substitute a TIFF equivalent of the PNG, the RGBA TIFF inside the exported PDF will have correct alpha values taken from the placed RGBA TIFF, but its RGB values will wrongly be as if the placed TIFF was being blended with black.
Warning: Affinity apps have numerous ancient bugs involving transparency, which I assume to be permanent.
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3 hours ago, henryanthony said:
So, I guess I will never know why AP changes values from those input to an Alpha Channel compared to what is filled in a layer after Loading Alpha to Selection.
For your particular workflow, if your document is CMYK, you need to specify K-only CMYK values (that is, C:0, M:0, Y:0) to fill your spare channel to get the spare channel to contain the values you expect. Specifying values in any other way will result in the spare channel containing values that you are not expecting.
By the way, I advise you do not use Affinity's Info panel for inspecting CMYK values in a document. Use the colour sampler in Colour panel, as you did in the first video, to discover true values.
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2 hours ago, Sheila Finch said:
bilinear
Bilinear will produce moire with your image. You probably meant to write bicubic.
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6 hours ago, Sheila Finch said:
Again, the moire shows up when the image is reduced to 1500 px. Here's the image attached.
No moire is produced when resizing that image to 1500 px with Lanczos or bicubic resampling.
Perhaps you are being misled by Affinity's display which is compromised by using mipmaps and a choice of bilinear (view quality = 'Best') or nearest neighbour (view quality = 'Fastest') resampling, whereas Preview's display uses either bicubic or Lanczos resampling.
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52 minutes ago, Sheila Finch said:
but the moire remains in the image.
If you upload the full size image (preferably inside a zip file), I'll see what I can do with it in Affinity.
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26 minutes ago, Iztok said:
Better option is when I select object I could move it, if I want specific part of object, then I double click and I can eork with part of object and layer open in layer panel on double click.
Groups, rather than Layers, behave as you require in Affinity (when Auto-select is not set to 'Objects').
Your parts (Curves, Rectangles, etc) are in a Layer currently.
Select the parts and press ctrl+G (Windows) or cmd+G (macOS) to wrap them in a Group.
[photo] extracting a drop shadow as transparency
in Affinity on Desktop Questions (macOS and Windows)
Posted
You can use the 'Shadow' Group as a mask for a dark coloured object over a lighter background, or use it as a mask for an Adjustment such as Curves. To use an object as a mask, drag and drop its thumbnail on the thumbnail (not the name) of the thing that is to be masked.