Angled guide lines

[jackamus]

Maybe this thread should be aired on 'Feedback suggestions' but I would like comments from users first.

ADV2 can now offer different coloured guide lines. This is a very useful feature for what I am suggesting.
I have searched to see if anyone has suggested angled guide lines and there appears to be none.
Different coloured angled guide lines would be a great feature for those who like to draw in perspective.

Image 1 Shows a screen with 3 sets of angled coloured guide lines. Each set of lines can be on a separate dedicated layer if so desired. The layers can be selected using the selection icon below left of screen.

Image 2 Shows the 3 sets of lines converging to a point (vanishing points). The idea is that further guides can be drawn that will automatically converge (snap) at the same points. These guides can be turned On and OFF

Image 3 Shows how the guide lines can be automatically adjust for 3 point perspective. The left and right hand vanishing points (LVP and RVP) can be moved, along with their respective guide lines, onto a horizontal line representing the 'Horizon'. A perpendicular guide line can be moved left or right to snap to the vertical vanishing point (VVP).

Image 4 Illustrates how some one who wants to draw accurately in perspective buy using an ellipse and adjusting the guides accordingly.

Image 5 Illustrates how the 3 vanishing points can be used to draw in perspective.

Image 6 Illustrates a further refinement which may or may not be easy for a developer to manage and may cause the eyes of those following this procedure to 'glaze over'.

The purpose of the following procedure is to establish the correct ellipse proportions for the LVP and RVP guides.
Image 7 It will be necessary to draw the major and minor axis on the green ellipse using conventional vertical and horizontal guide lines.
Guide lines from the LVP and RVP should be drawn through the centre of the ellipse.

Image 8 Draw a blue ellipse with the same major axis as the green ellipse positioned with its minor axis on the blue RVP guide line and transformed to intersect the green ellipse at points A on the red LVP guide.

Image 9 Repeat 8 above only on the red LVP guide to intersect the blue ellipse at points B. If drawn accurately the the red ellipse should also intersect the green ellipse at points C.

Image 10 Illustrates These ellipses drawn on a cube although over distorted in perspective.

Have I made a good case for angled guide lines?

 

 

Screen 1 .afdesign Screen 2 .afdesign Screen 3 .afdesign Screen 4 .afdesign Screen 5 .afdesign Screen 6 .afdesign Screen 7 .afdesign Screen 8 .afdesign Screen 9 .afdesign Screen 10 .afdesign

[loukash]

4 hours ago, jackamus said:

I have searched to see if anyone has suggested angled guide lines and there appears to be none.

I've seen it suggested a few times, but perhaps buried in other threads.
My primary request in that regard would actually be something à la "Convert Curve To Guideline", i.e. any shape can be a guideline – as it actually is already with the corresponding snapping options enabled.

[thomaso]

6 hours ago, jackamus said:

I would like comments from users first.

For this, it probably makes more sense to post screenshots than this bundle of several Affinity documents which each require a download to get viewed.

Apart from feature requests regarding guidelines since years, … even a rotated guide line would not meet the need to snap an object anywhere of its geometry, either to a custom curve used as guideline substitute or to any node of an object dragged for snapping (which currently seems to get workarounded only with AD and its Point Transformation Tool).

1 hour ago, loukash said:

My primary request in that regard would actually be something à la "Convert Curve To Guideline", i.e. any shape can be a guideline – as it actually is already with the corresponding snapping options enabled.

While we can use – in particular straight – curve objects as snapping guides already (with free choice for visual intensity: width, colour, opacity, blend mode), a new option "Convert to Guideline" appears to include / be close to the feature request for a new object property  "Do not print/export".

It seems that "curve" layers as guides even have advantages over true "guidelines", for instance if they should get copied, moved or scaled all together or resized with a change of a document's page dimensions.

[loukash]

9 minutes ago, thomaso said:

"curve" layers as guides even have advantages over true "guidelines"

Unless you want to zoom in/out. A guideline is "zoom agnostic". A stroke isn't.

One of the great Illustrator features always was the seamless conversion of paths and shapes into guidelines and vice versa. Even the original stroke/fill attributes are remembered when turning a guideline back to a shape/path.

[Pšenda]

On 11/21/2023 at 7:31 AM, jackamus said:

I have searched to see if anyone has suggested angled guide lines and there appears to be none.

https://www.google.com/search?q=Angled+guide+lines+site:https://forum.affinity.serif.com

[jackamus]

That's the problem doing searches - if you don't use the correct words then you find anything.

[Bit Disappointed]

I've been really missing rotatable guidelines for the last month in my work, but have simply forgotten to suggest implementing them. So yes, thank you.