th_studio Posted December 14, 2019 Posted December 14, 2019 Good day! As you can see, there are 2 objects in the attachment: a circle and a line. I was trying to divide the circle into 2 pieces using the divide Boolean operation but failed. I believe the circle is supposed to be divided into 2 pieces, but that's not happening. But why? Quote
dutchshader Posted December 14, 2019 Posted December 14, 2019 You would need to expand the stroke first, layer>expand stroke Quote intel core i5, 16GB 128Gb ssd win10 Pro Huion new 1060plus. philips 272p 2560x1440px on intel HD2500 onboard graphics Razer Tartarus Chroma
R C-R Posted December 14, 2019 Posted December 14, 2019 The "why" is because Affinity boolean operations consider only the area enclosed by paths, so the path of a straight line, no matter how wide its stroke might be, encloses no area & the divide operation simply removes the line. ESPR and th_studio 1 1 Quote All 3 1.10.8, & all 3 V2.5.7 Mac apps; 2020 iMac 27"; 3.8GHz i7, Radeon Pro 5700, 32GB RAM; macOS 10.15.7 All 3 V2 apps for iPad; 6th Generation iPad 32 GB; Apple Pencil; iPadOS 15.7
R C-R Posted December 14, 2019 Posted December 14, 2019 35 minutes ago, dutchshader said: You would need to expand the stroke first, layer>expand stroke The problem with using Expand Stroke for this is the result will not be two perfect ½ circles because the expanded shape removes a small amount from each of them. There are several better alternatives if perfect ½ circles are desired. The one I like best is to convert the circle to a Pie shape, set the start angle to 90° & end angle to 270°, then duplicate that & click the Invert angles button. Quote All 3 1.10.8, & all 3 V2.5.7 Mac apps; 2020 iMac 27"; 3.8GHz i7, Radeon Pro 5700, 32GB RAM; macOS 10.15.7 All 3 V2 apps for iPad; 6th Generation iPad 32 GB; Apple Pencil; iPadOS 15.7
Move Along People Posted December 14, 2019 Posted December 14, 2019 - Quote Move Along people,nothing to see here
th_studio Posted December 14, 2019 Author Posted December 14, 2019 42 minutes ago, R C-R said: The "why" is because Affinity boolean operations consider only the area enclosed by paths, so the path of a straight line, no matter how wide its stroke might be, encloses no area & the divide operation simply removes the line. Thanks for the explanation. Didn't know that divide command works in this way inside Affinity. Quote
R C-R Posted December 14, 2019 Posted December 14, 2019 9 minutes ago, haakoo said: Or close it to become a shape Close what? If you mean the line & it is straight, just closing it won't add any area to its path & the divide operation will still remove it. Quote All 3 1.10.8, & all 3 V2.5.7 Mac apps; 2020 iMac 27"; 3.8GHz i7, Radeon Pro 5700, 32GB RAM; macOS 10.15.7 All 3 V2 apps for iPad; 6th Generation iPad 32 GB; Apple Pencil; iPadOS 15.7
th_studio Posted December 14, 2019 Author Posted December 14, 2019 13 minutes ago, haakoo said: Cut with a rectangle Or close the line to have it become a shape Better yet,use the pie shape or the segment shape or the donut shape or the crescent shape or convert to curves and delete the excess nodes Roads,....Rome. Many thanks for sharing the methods! I know there are several ways to make a perfect half circle. But that's not my concern. I just wanted to know why divide was not working as it's supposed to do. Quote
Move Along People Posted December 14, 2019 Posted December 14, 2019 - Quote Move Along people,nothing to see here
R C-R Posted December 14, 2019 Posted December 14, 2019 @haakoo, in your gif, you do a lot more than just closing the straight line! Move Along People 1 Quote All 3 1.10.8, & all 3 V2.5.7 Mac apps; 2020 iMac 27"; 3.8GHz i7, Radeon Pro 5700, 32GB RAM; macOS 10.15.7 All 3 V2 apps for iPad; 6th Generation iPad 32 GB; Apple Pencil; iPadOS 15.7
Jowday Posted December 14, 2019 Posted December 14, 2019 13 hours ago, th_studio said: Good day! As you can see, there are 2 objects in the attachment: a circle and a line. I was trying to divide the circle into 2 pieces using the divide Boolean operation but failed. I believe the circle is supposed to be divided into 2 pieces, but that's not happening. But why? Specialized tools would make many workflows faster, easier and more fun. This would in your simple use case. Draw a rectangle with snapping enabled to align to the centre of the circle easily: Divide: Delete the now unwanted rectangular shape (in more complex scenarios you would need to delete more than one shape): Recolor the right side half circle: Instead of the rectangle you can draw a closed shape with the pen tool instead in other use cases - the poor mans knife tool: BUT beware - the current bool operations are not great, they can easily result in hundreds of nodes. This example is from a more complex operation than the above: AND even worse, zoom in and find errors like these (it should be a continuous unbroken line): Quote "The user interface is supposed to work for me - I am not supposed to work for the user interface." Computer-, operating system- and software agnostic; I am a result oriented professional. Look for a fanboy somewhere else. “When a wise man points at the moon the imbecile examines the finger.” ― Confucius Not an Affinity user og forum user anymore. The software continued to disappoint and not deliver.
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